LOCAL CLIMATOLOGICAL DATA Monthly Summary
May 2012
Station: Portsmouth, Virginia - KPWR Latitude: 36° 48' 04" N Longitude: 76° 19' 37" W Elevation (ground): 20 feet Time Zone: Eastern +--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+ | | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind | Sun | | +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+ | | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak | Minute| Mean | | | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ | | | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | I | | D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | n | | a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | d | | t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | e | | e| m | m | e | n | t | n | g | g |8 smk, hz| r| v | w | x | n | n | d | d | r | d | r | d | r | x | | | | | | | | | | |9 blw snw| | | | | | | | | | | | | | | | 1| 2 | 3 | 4A | 4B | 5 | 6 | 7 | 8 | 9 |10| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18| 19| 20| 21| 22| 23 | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |01| 87.1 | 63.1 | 75.1 | 74.1 | 66| 77| 0| 10|.........| 0| T | 0.0| 30.15| 30.01|30.074| 4.5| 4.5|205| 28|SSW| 0| 0| | |02| 87.0 | 60.2 | 73.6 | 74.1 | 66| 77| 0| 9|1......8.| 0| 0.00| 0.0| 30.12| 30.02|30.055| 4.8| 1.2|284| 23|WSW| 0| 0| | |03| 80.4 | 59.0 | 69.7 | 67.7 | 62| 81| 0| 5|1........| 0| 0.00| 0.0| 30.16| 30.05|30.096| 2.6| 1.7| 34| 16| NE| 0| 0| | |04| 88.4 | 62.3 | 75.3 | 74.4 | 67| 80| 0| 10|1.3......| 0| 0.03| 0.0| 30.05| 29.88|29.968| 2.2| 0.7|277| 19|NNW| 0| 0| | |05| 83.5 | 62.8 | 73.2 | 72.2 | 67| 84| 0| 9|1.3......| 0| 0.12| 0.0| 29.91| 29.82|29.860| 2.9| 2.9| 45| 22| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 69.0 | 57.3 | 63.2 | 63.3 | 59| 86| 2| 0|1........| 0| 0.01| 0.0| 30.08| 29.91|29.999| 7.4| 7.4| 45| 34| NE| 0| 0| | |07| 73.4 | 53.2 | 63.3 | 63.4 | 52| 69| 2| 0|.........| 0| 0.00| 0.0| 30.12| 30.05|30.079| 2.6| 2.0| 99| 20| SE| 0| 0| | |08| 82.5 | 56.2 | 69.3 | 69.7 | 59| 71| 0| 5|.........| 0| 0.00| 0.0| 30.08| 29.87|29.968| 2.1| 1.8|168| 23|SSW| 0| 0| | |09| 71.8 | 60.2 | 66.0 | 66.5 | 63| 91| 0| 1|1.3......| 0| 1.49| 0.0| 29.89| 29.62|29.758| 2.6| 2.1|207| 21| N| 0| 0| | |10| 71.9 | 55.4 | 63.7 | 62.9 | 53| 73| 1| 0|1........| 0| 0.07| 0.0| 29.94| 29.62|29.752| 6.2| 5.8|324| 29| NW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 70.9 | 53.2 | 62.1*| 62.5 | 47| 60| 3| 0|.........| 0| 0.00| 0.0| 30.24| 29.95|30.105| 3.4| 3.2|331| 20| N| 0| 0| | |12| 79.7 | 50.9*| 65.3 | 66.1 | 52| 63| 0| 1|.........| 0| 0.00| 0.0| 30.33| 30.24|30.280| 2.3| 2.1|237| 18|SSW| 0| 0| | |13| 80.5 | 57.8 | 69.2 | 69.4 | 58| 67| 0| 5|.........| 0| 0.00| 0.0| 30.28| 30.16|30.228| 1.7| 1.5|182| 21|SSW| 0| 0| | |14| 81.2 | 64.3 | 72.8 | 71.0 | 63| 75| 0| 8|.........| 0| T | 0.0| 30.17| 30.01|30.093| 2.0| 2.0|146| 19|SSE| 0| 0| | |15| 82.4 | 65.5 | 73.9 | 71.5 | 68| 89| 0| 9|1.3......| 0| 3.14| 0.0| 30.03| 29.92|29.974| 1.8| 1.5|179| 22| SE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 79.7 | 65.3 | 72.5 | 70.1 | 67| 91| 0| 8|1.3......| 0| 1.39| 0.0| 29.97| 29.89|29.935| 2.1| 0.4|297| 17| S| 0| 0| | |17| 74.3 | 60.5 | 67.4 | 65.9 | 61| 86| 0| 3|1........| 0| 0.00| 0.0| 30.07| 29.92|30.001| 6.3| 6.2| 43| 28| NE| 0| 0| | |18| 70.3 | 58.6 | 64.4 | 64.3 | 52| 64| 0| 0|.........| 0| 0.00| 0.0| 30.11| 30.04|30.082| 9.7| 9.7| 45| 33| NE| 0| 0| | |19| 73.6 | 52.7 | 63.2 | 64.7 | 51| 62| 1| 0|.........| 0| 0.00| 0.0| 30.13| 30.07|30.094| 6.3| 6.3| 45| 25| NE| 0| 0| | |20| 67.4 | 62.6 | 65.0 | 64.5 | 60| 85| 0| 0|1........| 0| 0.24| 0.0| 30.09| 29.99|30.045| 6.7| 6.1| 5| 25| N| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 79.4 | 64.0 | 71.7 | 69.9 | 66| 87| 0| 7|1........| 0| 0.01| 0.0| 30.02| 29.90|29.969| 1.5| 1.2| 94| 19| NE| 0| 0| | |22| 83.2 | 61.3 | 72.3 | 67.5 | 64| 90| 0| 7|1.3......| 0| 0.60| 0.0| 29.90| 29.82|29.857| 0.8| 0.2|129| 25| N| 0| 0| | |23| 82.4 | 61.5 | 71.9 | 72.2 | 67| 84| 0| 7|1........| 0| 0.00| 0.0| 29.99| 29.84|29.892| 1.2| 1.2|209| 21|WSW| 0| 0| | |24| 83.1 | 63.3 | 73.2 | 73.1 | 68| 83| 0| 8|1........| 0| 0.17| 0.0| 30.08| 29.98|30.044| 2.2| 2.1|144| 24| SE| 0| 0| | |25| 84.1 | 68.4 | 76.3 | 75.9 | 70| 83| 0| 11|.........| 0| T | 0.0| 30.13| 30.08|30.108| 2.0| 1.5|100| 19| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 85.1 | 64.7 | 74.9 | 75.3 | 68| 80| 0| 10|.........| 0| 0.00| 0.0| 30.18| 30.11|30.143| 2.1| 1.4| 90| 18| NE| 0| 0| | |27| 85.9 | 65.9 | 75.9 | 77.2 | 71| 82| 0| 11|.........| 0| 0.00| 0.0| 30.17| 30.07|30.122| 2.1| 1.8|122| 18| SE| 0| 0| | |28| 89.4*| 70.8 | 80.1*| 79.7 | 73| 80| 0| 15|.........| 0| 0.00| 0.0| 30.11| 29.98|30.040| 3.3| 3.0|215| 23|SSW| 0| 0| | |29| 89.0 | 71.1 | 80.1 | 78.9 | 73| 82| 0| 15|.........| 0| 0.00| 0.0| 30.00| 29.83|29.923| 7.5| 7.5|203| 25|SSW| 0| 0| | |30| 77.5 | 67.9 | 72.7 | 70.9 | 69| 94| 0| 8|1........| 0| 2.21| 0.0| 29.84| 29.66|29.757| 4.0| 1.2| 45| 19| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 87.0 | 62.3 | 74.7 | 75.2 | 67| 77| 0| 10|.........| 0| 0.01| 0.0| 29.89| 29.74|29.818| 2.3| 1.3|312| 18|WSW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2481.1|1902.3|------|------|---|----| 9| 192| Days | 9.49| 0.0| 30.33| 29.62|30.004| 3.5| 0.7| 41| 34| NE| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+5.26" or 224% of normal +-----------+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 80.0| 61.3| 70.6 | 70.1 | 63|79.1|----|----|>.01 Inch 13|23.12| 0.5| 12 | 9 |------|----|----|---| 6 | 1+ | | | +2.5 +3.5 +2.9 ------+---+----+----+----+------------|+4.63" or 125% of normal +------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |>1.0 Inch 0| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |2662| 265|Thunder 6|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 3.17| 15-16| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 0 | 0 |----|----| Clear 9 Partly Cloudy 17 Cloudy 5 | +--------+---------+--------+--------+----+----+------------------------------------------+ NOTES: Data in column 4A are (MAX+MIN) / 2, whereas data in columns 4B, 5, 6, 15, 16, 23 are means via continuous observations Units are: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. for 24 hours. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours. Columns 7, 8: Degree Days heating base is 65°F, cooling base is 65°F. Data in columns 9, 10, 12 are entered manually by the station observer. Columns 17-18: Resultant wind is calculated by the vector sum of continuous wind observations. Column 23: Sunshine index is measured in Watts/m^2 and is continuously averaged for 24 hours. Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean.
  OBSERVER NOTES:
    The 9.49" of rain recorded during May 2012 in the West Cradock area of Portsmouth, Virginia, established a NEW STATION MAY MONTHLY
    RAINFALL RECORD. The Top 5 Wettest Mays include: 1) 9.49" 2012, 2) 8.06" 1986, 3) 7.76" 1978, 4) 7.21" 1979, and 5) 5.77" 2003.
     May's average temperature (70.6) was 2.9 ABOVE NORMAL. Precipitation was WELL-ABOVE NORMAL by 5.26" or 224% of normal relative to
     normal Mays for the period from 1977 to 2011. Frontal passages occurred on the 2nd (backdoor onshore/coastal), 5th; 9th
     STATION RECORDS: 4th - TEMPERATURE 88 [previous 87 1996], 15th - RAINFALL 3.14" [previous 0.78" 2005], 18th - WIND GUST 33mph [previous 32mph 1991],
      and 29th - TEMPERATURE TIED 71 [previous 1991] By the end of the month, the yearly average temperature was 70.6 and that was 2.9
      ABOVE normal while rainfall for the year was 23.12" or 4.63" ABOVE normal (125% of normal).

   MONTHLY AVERAGE MAXIMUM TEMP OF 80.0 WAS 2.5 ABOVE NORMAL.
   MONTHLY AVERAGE MINIMUM TEMP OF 61.3 WAS 3.5 ABOVE NORMAL.
   MONTHLY AVERAGE TEMP OF 70.6 WAS 2.9 BELOW NORMAL.
                              

   MAXIMUM TEMP:  89 ON THE 28TH AND 29TH   
   MINIMUM TEMP:  51 ON THE 12TH

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:   0
        MAXIMUM <= 32:   0
        MINIMUM <= 32:   0
        MINIMUM <=  0:   0

   HEATING DEGREE DAYS:   10.5 
   COOLING DEGREE DAYS:  185.0 

   DAYS WITH HEATING DEGREE DAYS:  6
   DAYS WITH COOLING DEGREE DAYS: 24 

   PRECIP TOTAL OF  9.49" WAS 5.26" ABOVE NORMAL (224% OF NORMAL).
   
   GREATEST DAILY RAINFALL:    3.14  ON THE 15TH    
   GREATEST 24-HOUR RAINFALL:  3.17  ON THE 15TH-16TH    

   DAYS WITH MEASUREABLE PRECIP:  13 OR 41.94% 
   AVERAGE DAILY PRECIP: 0.31"
   NORMAL DAILY PRECIP:  0.14"
                                   
   DAYS WITH PRECIP >= 0.01"    13 
   DAYS WITH PRECIP >= 0.10"     8 
   DAYS WITH PRECIP >= 0.50"     5
   DAYS WITH PRECIP >= 1.00"     4 

   DAYS WITH THUNDERSTORMS:   6
   NUMBER OF THUNDERSTORMS:   9 

   DAYS WITH SNOW:  0
   SNOWFALL TOTAL:  0.0" 
   SEASONAL SNOWFALL 2011-2012:  0.5" 

   CLOUDY DAYS:           5
   PARTLY CLOUDY DAYS:   17 
   SUNNY/CLEAR DAYS:      9
   DAYS WITH F/GF:       16
   DAYS WITH DENSE FOG:   0 
   DAYS WITH FROST:       0

   YEAR-TO-DATE

   YEARLY  AVERAGE MAXIMUM TEMP OF 65.7 WAS 3.9 ABOVE NORMAL.
   YEARLY  AVERAGE MINIMUM TEMP OF 46.1 WAS 3.5 ABOVE NORMAL.
   YEARLY  AVERAGE TEMP OF 55.9 WAS 3.7 ABOVE NORMAL.

   MAXIMUM TEMP:  89 ON MAY 28TH AND 29TH  
   MINIMUM TEMP:  21 ON JANUARY 4TH & FEBRUARY 13TH

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:    0
        MAXIMUM <= 32:    0
        MINIMUM <= 32:   21
        MINIMUM <=  0:    0

   HEATING DEGREE DAYS:  1639.5
   COOLING DEGREE DAYS:   252.0

   DAYS WITH HEATING DEGREE DAYS:  111
   DAYS WITH COOLING DEGREE DAYS:   39  
                               
   PRECIP TOTAL OF 23.12" WAS 4.63" ABOVE NORMAL (125% OF NORMAL).

   GREATEST DAILY RAINFALL:    3.14" ON MAY 15TH     
   GREATEST 24-HOUR RAINFALL:  3.17" ON MAY 15TH-16TH          

   DAYS WITH MEASUREABLE PRECIP:  59 OF 152 OR  38.82%
   AVERAGE DAILY PRECIP: 0.15" 
   NORMAL DAILY PRECIP:  0.12"

   DAYS WITH PRECIP >= 0.01"    59
   DAYS WITH PRECIP >= 0.10"    37
   DAYS WITH PRECIP >= 0.50"    17
   DAYS WITH PRECIP >= 1.00"     6

   DAYS WITH THUNDERSTORMS:  14
   NUMBER OF THUNDERSTORMS:  17 
                                  
   DAYS WITH SNOW  (calendar year 2012):  4 
   SNOWFALL TOTAL  (calendar year 2012):  0.5" 
   SEASONAL SNOW 2011-2012 (beginning November 2011): 0.5"   

   CLOUDY DAYS:          24
   PARTLY CLOUDY DAYS:   78 
   SUNNY/CLEAR DAYS:     50 
   DAYS WITH F/GF:       39 
   DAYS WITH DENSE FOG:   4
   DAYS WITH FROST:      14
OBSERVATIONS AT 3-HOUR INTERVALS
May 2012: Portsmouth, Virginia - KPWR
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 1 | MAY 2 | MAY 3 | | | | | |01| |30.15| 0.00| 64| 59| 84|13| 0| 16| |30.04| 0.00| 67| 62| 84|20| 0| 11| |30.12| 0.00| 60| 56| 88|13| 4| 14| |04| |30.10| 0.00| 65| 61| 89|13| 0| 12| |30.02| 0.00| 68| 65| 90|20| 4| 15| |30.08| 0.00| 60| 57| 90|11| 0| 6| |07| |30.12| 0.00| 66| 64| 93|20| 4| 16| |30.05| 0.00| 67| 64| 90|18| 4| 18| |30.13| 0.00| 60| 57| 90|04| 4| 10| |10| |30.11| 0.00| 74| 69| 84|20| 6| 22| |30.06| 0.00| 77| 70| 79|24| 6| 21| |30.14| 0.00| 62| 58| 88|04| 5| 15| |13| |30.06| 0.00| 84| 71| 66|20| 10| 26| |30.06| 0.00| 84| 71| 65|31| 7| 19| |30.12| 0.00| 74| 65| 74|33| 5| 15| |16| |30.01| 0.00| 87| 71| 60|20| 7| 22| |30.03| 0.00| 86| 69| 57|29| 5| 15| |30.08| 0.00| 79| 67| 67|33| 5| 14| |19| |30.01| 0.00| 82| 70| 67|20| 4| 15| |30.05| 0.00| 80| 67| 65|04| 6| 17| |30.05| 0.00| 78| 68| 71|04| 4| 11| |22| |30.04| 0.00| 70| 62| 76|20| 4| 16| |30.12| 0.00| 63| 58| 86|04| 4| 15| |30.08| 0.00| 67| 62| 83|13| 0| 11| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 4 | MAY 5 | MAY 6 | | | | | |01| |30.05| 0.00| 63| 60| 90|15| 0| 6| |29.89| 0.11| 69| 67| 92|27| 0| 11| |29.92| 0.00| 63| 61| 94|04| 7| 20| |04| |30.03| 0.00| 63| 61| 93|20| 0| 7| |29.83| 0.00| 67| 65| 94|22| 0| 10| |29.92| 0.00| 62| 60| 94|04| 10| 22| |07| |30.02| 0.00| 64| 62| 94|13| 0| 7| |29.86| 0.00| 66| 64| 95|00| 0| 0| |29.95| 0.00| 61| 59| 92|04| 7| 20| |10| |30.02| 0.00| 73| 69| 87|20| 4| 11| |29.87| 0.00| 77| 69| 78|33| 0| 10| |30.00| 0.00| 62| 60| 92|04| 5| 19| |13| |29.96| 0.00| 86| 74| 67|20| 5| 17| |29.85| 0.00| 83| 70| 65|04| 5| 12| |30.04| 0.00| 68| 61| 77|04| 10| 21| |16| |29.92| 0.00| 85| 72| 65|31| 4| 11| |29.83| 0.00| 79| 68| 70|04| 6| 16| |30.02| 0.00| 67| 60| 76|04| 11| 22| |19| |29.89| 0.00| 85| 73| 68|04| 4| 11| |29.87| 0.01| 72| 67| 85|06| 0| 12| |30.04| 0.00| 62| 57| 82|04| 7| 19| |22| |29.90| 0.00| 76| 69| 78|00| 0| 0| |29.89| 0.00| 64| 62| 93|04| 7| 16| |30.07| 0.00| 59| 55| 87|04| 5| 17| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 7 | MAY 8 | MAY 9 | | | | | |01| |30.07| 0.00| 57| 54| 90|02| 0| 10| |30.08| 0.00| 60| 55| 83|11| 0| 6| |29.89| 0.00| 66| 61| 82|20| 4| 17| |04| |30.06| 0.00| 54| 52| 92|02| 0| 5| |30.02| 0.00| 58| 55| 88|13| 0| 6| |29.85| 0.00| 65| 60| 85|20| 4| 15| |07| |30.07| 0.00| 56| 54| 94|04| 0| 10| |30.03| 0.00| 58| 56| 92|11| 0| 6| |29.83| 0.00| 65| 61| 88|20| 0| 12| |10| |30.10| 0.00| 68| 52| 57|13| 4| 17| |30.02| 0.00| 72| 61| 68|20| 4| 15| |29.80| 0.14| 67| 65| 92|20| 4| 17| |13| |30.11| 0.00| 73| 50| 45|13| 6| 18| |29.98| 0.00| 79| 63| 57|20| 5| 18| |29.77| 0.00| 72| 69| 91|20| 5| 19| |16| |30.08| 0.00| 73| 49| 43|04| 5| 20| |29.91| 0.00| 82| 64| 53|15| 4| 16| |29.69| 0.16| 68| 66| 93|29| 0| 10| |19| |30.06| 0.00| 67| 54| 62|13| 4| 14| |29.87| 0.00| 77| 60| 55|15| 4| 18| |29.64| 0.04| 66| 64| 95|15| 0| 5| |22| |30.07| 0.00| 60| 53| 79|13| 0| 12| |29.90| 0.00| 69| 60| 74|13| 0| 10| |29.62| 0.19| 64| 63| 96|24| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 10 | MAY 11 | MAY 12 | | | | | |01| |29.62| 0.06| 59| 58| 95|00| 5| 17| |29.95| 0.00| 57| 52| 84|00| 0| 0| |30.24| 0.00| 54| 47| 77|18| 0| 6| |04| |29.64| 0.00| 58| 56| 95|00| 5| 13| |29.99| 0.00| 56| 52| 86|00| 0| 0| |30.25| 0.00| 52| 48| 87|20| 0| 7| |07| |29.69| 0.00| 56| 54| 95|00| 0| 10| |30.08| 0.00| 58| 49| 72|31| 4| 14| |30.31| 0.00| 53| 51| 92|11| 0| 5| |10| |29.74| 0.00| 63| 53| 69|31| 12| 26| |30.13| 0.00| 64| 44| 48|33| 7| 18| |30.32| 0.00| 71| 52| 51|27| 4| 13| |13| |29.76| 0.00| 68| 53| 59|31| 11| 24| |30.14| 0.00| 67| 45| 45|31| 6| 19| |30.32| 0.00| 77| 54| 44|24| 5| 17| |16| |29.77| 0.00| 71| 52| 51|31| 10| 20| |30.14| 0.00| 70| 45| 40|00| 7| 18| |30.27| 0.00| 79| 53| 41|24| 5| 16| |19| |29.83| 0.00| 69| 49| 49|31| 10| 19| |30.15| 0.00| 69| 45| 42|00| 5| 13| |30.25| 0.00| 75| 53| 47|24| 4| 14| |22| |29.91| 0.00| 59| 49| 70|00| 0| 0| |30.21| 0.00| 58| 48| 69|15| 0| 5| |30.26| 0.00| 65| 51| 60|20| 0| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 13 | MAY 14 | MAY 15 | | | | | |01| |30.27| 0.00| 61| 51| 70|20| 0| 10| |30.17| 0.00| 66| 58| 77|24| 0| 7| |30.03| 0.00| 69| 64| 85|13| 0| 11| |04| |30.25| 0.00| 59| 52| 79|20| 0| 7| |30.13| 0.00| 65| 59| 82|13| 0| 7| |29.98| 0.00| 68| 65| 90|15| 4| 14| |07| |30.27| 0.00| 59| 54| 85|20| 0| 7| |30.13| 0.00| 65| 60| 86|15| 0| 7| |30.00| 0.25| 69| 67| 93|13| 0| 14| |10| |30.27| 0.00| 75| 62| 65|20| 5| 21| |30.13| 0.00| 70| 65| 82|15| 0| 14| |30.00| 0.00| 72| 71| 96|15| 0| 15| |13| |30.23| 0.00| 80| 64| 58|20| 4| 19| |30.10| 0.00| 77| 67| 71|15| 4| 15| |29.98| 0.00| 80| 73| 79|20| 4| 13| |16| |30.18| 0.00| 79| 60| 52|13| 4| 16| |30.04| 0.00| 80| 64| 57|13| 4| 17| |29.94| 0.41| 71| 69| 91|15| 5| 21| |19| |30.16| 0.00| 74| 59| 59|15| 0| 12| |30.02| 0.00| 74| 63| 69|13| 4| 17| |29.97| 0.00| 73| 68| 85|24| 4| 13| |22| |30.19| 0.00| 68| 58| 70|15| 0| 7| |30.04| 0.00| 71| 64| 79|13| 4| 16| |29.95| 0.00| 69| 65| 89|22| 0| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 16 | MAY 17 | MAY 18 | | | | | |01| |29.97| 0.00| 66| 64| 93|20| 0| 12| |29.93| 0.00| 65| 63| 95|13| 0| 5| |30.06| 0.00| 60| 52| 74|04| 5| 15| |04| |29.93| 0.03| 67| 65| 95|20| 0| 12| |29.92| 0.00| 64| 63| 96|13| 0| 4| |30.04| 0.00| 60| 49| 67|04| 5| 15| |07| |29.95| 0.00| 68| 67| 96|22| 0| 7| |29.95| 0.00| 64| 62| 96|00| 0| 0| |30.06| 0.00| 61| 52| 73|04| 6| 19| |10| |29.95| 0.00| 72| 71| 96|20| 4| 15| |30.00| 0.00| 74| 68| 82|04| 7| 22| |30.10| 0.00| 67| 54| 63|04| 12| 23| |13| |29.93| 0.00| 80| 71| 75|31| 4| 12| |30.02| 0.00| 69| 64| 84|04| 11| 22| |30.11| 0.00| 69| 55| 61|04| 13| 28| |16| |29.91| 0.00| 76| 69| 80|33| 5| 14| |30.03| 0.00| 66| 61| 82|04| 12| 25| |30.09| 0.00| 70| 50| 49|04| 15| 31| |19| |29.93| 0.00| 67| 65| 94|20| 0| 11| |30.06| 0.00| 63| 58| 84|04| 13| 23| |30.09| 0.00| 66| 49| 53|04| 13| 30| |22| |29.94| 0.00| 66| 64| 95|00| 0| 0| |30.07| 0.00| 61| 52| 72|04| 5| 17| |30.11| 0.00| 62| 52| 70|04| 6| 17| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.21 | 0.41 | 0.61 | 0.81 | 1.21 | 1.81 | 2.31 | 2.39 | 2.47 | 2.56 | 2.65 | 2.73 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0705 | 0710 | 0715 | 0720 | 0730 | 0745 | 0757 | 0757 | 0757 | 0800 | 0830 | 0856 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ The precipitation amounts for the indicated time intervals may occur at any time during the month. The time indicated is the ending time of the interval. Date and time are not entered for trace amounts.
OBSERVATIONS AT 3-HOUR INTERVALS
May 2012: Portsmouth, Virginia - KPWR
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 19 | MAY 20 | MAY 21 | | | | | |01| |30.09| 0.00| 58| 50| 75|04| 4| 15| |30.08| 0.00| 63| 42| 45|33| 4| 11| |30.00| 0.01| 65| 63| 95|29| 0| 6| |04| |30.07| 0.00| 53| 48| 84|04| 0| 6| |30.05| 0.00| 64| 57| 76|04| 5| 16| |29.99| 0.00| 65| 64| 96|15| 0| 6| |07| |30.09| 0.00| 59| 50| 74|04| 5| 18| |30.06| 0.00| 64| 58| 82|04| 6| 19| |30.02| 0.00| 65| 64| 96|15| 0| 6| |10| |30.12| 0.00| 67| 49| 53|04| 12| 23| |30.08| 0.00| 63| 60| 90|00| 7| 19| |30.02| 0.00| 69| 67| 94|15| 0| 10| |13| |30.13| 0.00| 71| 51| 49|04| 12| 24| |30.08| 0.02| 65| 62| 91|00| 10| 19| |29.99| 0.00| 79| 69| 72|13| 4| 15| |16| |30.10| 0.00| 72| 52| 49|04| 10| 21| |30.04| 0.01| 66| 64| 93|00| 10| 21| |29.94| 0.00| 76| 68| 76|04| 5| 17| |19| |30.07| 0.00| 71| 53| 52|04| 6| 16| |30.00| 0.01| 65| 64| 94|00| 10| 22| |29.91| 0.00| 72| 66| 81|13| 4| 15| |22| |30.08| 0.00| 65| 54| 67|04| 4| 14| |29.99| 0.00| 65| 63| 95|29| 5| 14| |29.91| 0.00| 66| 63| 89|13| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 22 | MAY 23 | MAY 24 | | | | | |01| |29.90| 0.00| 63| 61| 93|00| 0| 0| |29.88| 0.00| 62| 61| 95|00| 0| 0| |29.99| 0.00| 65| 60| 82|20| 0| 4| |04| |29.86| 0.00| 62| 60| 94|00| 0| 0| |29.85| 0.00| 62| 61| 96|00| 0| 0| |29.98| 0.00| 64| 61| 93|15| 0| 5| |07| |29.86| 0.00| 64| 63| 96|18| 0| 6| |29.87| 0.00| 64| 63| 96|00| 0| 0| |30.06| 0.00| 65| 63| 95|13| 0| 5| |10| |29.88| 0.00| 70| 67| 90|20| 0| 10| |29.89| 0.00| 75| 71| 86|13| 0| 7| |30.08| 0.00| 74| 70| 87|13| 4| 12| |13| |29.84| 0.00| 83| 72| 70|13| 4| 10| |29.90| 0.00| 80| 72| 77|13| 0| 14| |30.07| 0.00| 82| 73| 73|11| 4| 16| |16| |29.85| 0.13| 67| 64| 93|13| 0| 10| |29.88| 0.00| 80| 72| 77|20| 4| 15| |30.04| 0.00| 82| 72| 70|13| 5| 19| |19| |29.84| 0.02| 66| 64| 95|20| 0| 10| |29.89| 0.00| 81| 70| 69|20| 4| 15| |30.03| 0.00| 80| 72| 76|15| 4| 15| |22| |29.86| 0.00| 64| 62| 95|20| 0| 7| |29.99| 0.00| 72| 62| 72|24| 4| 21| |30.08| 0.00| 72| 68| 87|06| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 25 | MAY 26 | MAY 27 | | | | | |01| |30.08| 0.00| 70| 68| 93|06| 0| 7| |30.11| 0.00| 67| 65| 93|11| 0| 4| |30.13| 0.00| 69| 67| 93|15| 0| 12| |04| |30.08| 0.00| 70| 68| 94|11| 0| 5| |30.13| 0.00| 66| 64| 94|04| 0| 5| |30.12| 0.00| 67| 65| 94|15| 0| 5| |07| |30.12| 0.00| 69| 68| 95|11| 0| 5| |30.15| 0.00| 69| 67| 95|04| 0| 10| |30.15| 0.00| 69| 68| 96|06| 0| 7| |10| |30.13| 0.00| 79| 73| 81|06| 4| 12| |30.16| 0.00| 79| 71| 77|04| 4| 12| |30.17| 0.00| 81| 73| 77|13| 4| 12| |13| |30.12| 0.00| 82| 72| 71|04| 5| 17| |30.16| 0.00| 82| 70| 66|04| 5| 18| |30.14| 0.00| 86| 74| 68|13| 4| 18| |16| |30.11| 0.00| 82| 72| 71|13| 5| 17| |30.13| 0.00| 85| 73| 67|13| 4| 16| |30.10| 0.00| 84| 74| 72|13| 4| 16| |19| |30.10| 0.00| 79| 70| 75|13| 5| 14| |30.13| 0.00| 80| 70| 72|13| 4| 14| |30.08| 0.00| 83| 74| 74|13| 4| 12| |22| |30.13| 0.00| 71| 67| 88|13| 0| 11| |30.16| 0.00| 72| 68| 88|13| 0| 6| |30.12| 0.00| 75| 71| 88|13| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 28 | MAY 29 | MAY 30 | | | | | |01| |30.11| 0.00| 74| 71| 91|15| 0| 7| |30.00| 0.00| 74| 69| 86|20| 5| 20| |29.84| 0.00| 74| 71| 90|20| 5| 18| |04| |30.04| 0.00| 71| 69| 94|20| 5| 19| |29.97| 0.00| 71| 69| 93|20| 4| 14| |29.80| 0.00| 72| 70| 94|20| 4| 15| |07| |30.04| 0.00| 72| 70| 94|20| 4| 14| |29.99| 0.00| 73| 71| 93|20| 4| 13| |29.80| 0.00| 73| 71| 95|20| 0| 11| |10| |30.10| 0.00| 80| 73| 79|20| 4| 16| |29.98| 0.00| 82| 74| 78|20| 66| 25| |29.80| 0.16| 72| 71| 94|31| 0| 10| |13| |30.06| 0.00| 86| 74| 69|20| 5| 19| |29.93| 0.00| 86| 75| 70|20| 5| 20| |29.78| 0.12| 70| 69| 96|04| 4| 14| |16| |30.00| 0.00| 88| 75| 64|20| 4| 16| |29.88| 0.00| 81| 75| 81|20| 5| 18| |29.69| 0.19| 68| 67| 96|04| 6| 18| |19| |29.99| 0.00| 87| 74| 66|22| 0| 10| |29.83| 0.00| 83| 73| 72|20| 4| 21| |29.67| 0.00| 69| 68| 96|04| 6| 16| |22| |30.01| 0.00| 78| 73| 83|20| 0| 16| |29.86| 0.00| 76| 71| 85|20| 4| 15| |29.71| 0.00| 69| 67| 93|33| 6| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 31 | | | | | | | |01| |29.74| 0.00| 68| 66| 95|31| 0| 10| | | |04| |29.76| 0.00| 64| 63| 96|27| 0| 10| | | |07| |29.81| 0.00| 65| 64| 96|00| 0| 0| | | |10| |29.84| 0.00| 77| 69| 75|31| 5| 12| | | |13| |29.83| 0.00| 83| 69| 62|31| 4| 14| | | |16| |29.82| 0.00| 86| 67| 53|24| 4| 18| | | |19| |29.84| 0.00| 82| 69| 64|04| 5| 16| | | |22| |29.88| 0.00| 74| 66| 76|00| 0| 0| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
WEATHER NOTES SUMMARY BY HOURS
+--+-----------------------------+---------+ Wind Direction: Directions are those from which the wind is blowing, | | Averages | | indicated in tens of degrees from true North: i.e., 09 for East, 18 for | +----+------+---+---+---+-----+Resultant| South, 27 for West, and 00 or 36 for North. | | | | | | | | | Wind Speed: The observed one-minute average speed in miles-per-hour. | | | | T | | | | Wind | Wind Gust: The maximum instantaneous wind speed for the ten minute-period | | | | e | | % | W +----+----+ preceding the observation. | | | | m | D | | i | D | | Rainfall Rate: The instantaneous rainfall rate at time of observation, | | S | P | p | e | H | n | i | | calculated by timing consecutive 0.01" pulses from the electronic rain | | u | r | e | w | u | d | r | | gauge and interpolating this rate for one hour. | | n | e | r | | m | | e | | | | s | s | a | P | i | S | c | S | | H| h | s | t | o | d | p | t | p | | o| i | u | u | i | i | e | i | e | | u| n | r | r | n | t | e | o | e | | r| e | e | e | t | y | d | n | d | +--+----+------+---+---+---+-----+----+----+ |01| |29.997| 65| 60| 86| 1.3| 06 | 0.3| |04| |29.977| 63| 60| 90| 1.5| 12 | 0.3| |07| |30.005| 64| 61| 91| 1.5| 06 | 0.4| |10| |30.021| 72| 65| 78| 6.3| 22 | 1.3| |13| |30.007| 78| 66| 68| 5.9| 02 | 1.0| |16| |29.974| 78| 65| 67| 5.7| 04 | 1.4| |19| |29.969| 75| 64| 71| 4.6| 06 | 1.9| |22| |29.997| 68| 62| 81| 1.8| 03 | 0.6| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 2012: Portsmouth, Virginia - KPWR
---+-----------------------------------------------------------+-----------------------------------------------------------+--- | | | D| A.M. Hour Ending at | P.M. Hour Ending at |D a| | |a t+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+t e| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |e ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- 01| | | | | | | | | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | |0.01| | | | | | | | | | | | | | | | | |0.02|04 05| |0.11| | | | | | | | | | | | | | | | | |0.01| | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | |0.01| | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | |0.06|0.14| |0.01| |0.14|0.12|0.16|0.10|0.04|0.04|0.09|0.32|0.19|0.08|09 10| |0.06| | | | |0.01| | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | |0.25|2.30|0.18| | | | | | |0.41| | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | |0.03| | | | | | | |0.01| | | | |1.31|0.03| |0.01| | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | |0.01| |0.02|0.02| |0.01|0.07|0.02|0.01|0.06|0.02| | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| |0.01| | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | |0.32|0.13|0.04|0.09|0.02| | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | |0.15| | |0.02| | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | |0.50|0.16|0.83|0.06|0.12|0.10|0.15|0.19|0.07|0.03| | | | | |30 31| | | | | | | | | |0.01| | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.18|0.00|0.15|0.03|0.01|0.03|0.25|2.30|0.75|0.30|0.85|0.08|0.14|0.26|0.59|0.90|1.59|0.21|0.08|0.16|0.34|0.19|0.10|Sum ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- During a frozen precipitation event, hourly precipitation totals may not be recorded. In this case, daily amounts are typically entered in the last column (hour ending at 12 A.M.)