LOCAL CLIMATOLOGICAL DATA Monthly Summary
March 2018
Station: KPWR Portsmouth, Virginia Latitude: 36° 59' 09" N Longitude: 76° 33' 00" W Elevation (ground): 13 feet Time Zone: Eastern +--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+ | | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind |Solar | | +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+ | | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak |2Minute| Mean | | | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ W | | | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | a | | D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | t | | a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | t | | t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | s | | 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 | m^2 | | | | | | | | | | |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| 58.3 | 53.6 | 55.9 | 55.9 | 55| 97| 9| 0|1........| 0| 0.54| 0.0| 29.93| 29.50|29.726| 0.0| 0.0| 0| 20| W| 0| 0| | |02| 56.2 | 44.8 | 50.5 | 49.9 | 34| 56| 14| 0|.........| 0| T | 0.0| 29.90| 29.49|29.685|12.9|12.2|292| 53| NW| 0| 0| | |03| 53.0 | 39.2 | 46.1 | 45.5 | 30| 55| 19| 0|.........| 0| 0.00| 0.0| 30.12| 29.91|30.004| 9.4| 9.3|319| 46| NW| 0| 0| | |04| 47.5 | 38.9 | 43.2 | 43.4 | 31| 63| 21| 0|.........| 0| 0.00| 0.0| 30.17| 30.09|30.124| 4.2| 3.5|344| 29|NNW| 0| 0| | |05| 46.9 | 33.0 | 40.0 | 40.2 | 24| 53| 25| 0|.........| 0| 0.00| 0.0| 30.13| 30.03|30.082| 1.2| 1.1|325| 25|NNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 50.0 | 28.7 | 39.3 | 39.6 | 35| 83| 25| 0|1........| 0| 0.67| 0.0| 30.08| 29.73|29.966| 0.0| 0.0| 0| 15| SE| 0| 0| | |07| 54.1 | 43.0 | 48.5 | 47.3 | 41| 81| 16| 0|.........| 0| 0.17| 0.0| 29.86| 29.58|29.680| 1.9| 1.8|278| 32| W| 0| 0| | |08| 49.3 | 30.8 | 40.0 | 41.0 | 27| 58| 25| 0|.........| 0| 0.00| 0.0| 29.90| 29.77|29.847| 0.0| 0.0| 0| 23|WSW| 0| 0| | |09| 49.1 | 29.3 | 39.2 | 39.2 | 24| 55| 26| 0|.........| 0| 0.00| 0.0| 30.03| 29.89|29.951| 0.0| 0.0| 0| 23| W| 0| 0| | |10| 50.8 | 33.2 | 42.0 | 43.9 | 36| 74| 23| 0|.........| 0| T | 0.0| 30.09| 29.96|30.028| 0.0| 0.0| 0| 0| N| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 45.4 | 39.7 | 42.6 | 43.1 | 37| 79| 22| 0|.........| 0| 0.13| 0.0| 30.12| 29.99|30.053| 0.0| 0.0| 0| 21| NE| 0| 0| | |12| 42.9 | 33.2 | 38.1 | 39.7 | 37| 92| 27| 0|...4....|2.3| 0.86| 2.3| 29.96| 29.60|29.743| 6.5| 6.1| 17| 34| N| 0| 0| | |13| 48.3 | 34.8 | 41.5 | 40.6 | 30| 69| 23| 0|........|2.3| 0.00| 0.0| 29.92| 29.66|29.808| 7.1| 6.2|348| 34| N| 0| 0| | |14| 44.9 | 31.0 | 38.0*| 37.7 | 24| 59| 27| 0|.........| 0| 0.00| 0.0| 29.90| 29.78|29.846| 1.4| 1.4|287| 28| W| 0| 0| | |15| 60.5 | 28.8 | 44.7 | 43.6 | 27| 54| 20| 0|.........| 0| 0.00| 0.0| 29.91| 29.59|29.776| 1.2| 1.0|238| 34|WSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 53.2 | 34.6 | 43.9 | 43.9 | 30| 61| 21| 0|.........| 0| 0.00| 0.0| 30.05| 29.73|29.880| 0.8| 0.8|320| 27| NW| 0| 0| | |17| 56.9 | 28.3*| 42.6 | 43.2 | 31| 65| 22| 0|.........| 0| 0.00| 0.0| 30.06| 29.79|29.925| 0.0| 0.0| 0| 19| NW| 0| 0| | |18| 53.8 | 39.7 | 46.8 | 45.7 | 34| 67| 18| 0|.........| 0| 0.18| 0.0| 30.00| 29.81|29.918| 0.7| 0.7| 51| 22| NE| 0| 0| | |19| 63.6 | 36.0 | 49.8 | 48.3 | 42| 78| 15| 0|.........| 0| T | 0.0| 29.94| 29.79|29.870| 0.0| 0.0| 0| 15| NE| 0| 0| | |20| 49.2 | 40.2 | 44.7 | 45.8 | 44| 95| 20| 0|1........| 0| 1.06| 0.0| 29.76| 29.50|29.613| 5.2| 4.3| 11| 31|NNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 40.7 | 35.7 | 38.2 | 38.1 | 37| 95| 26| 0|1........| 0| 0.14| T | 29.79| 29.48|29.600| 3.9| 3.2|308| 26|WNW| 0| 0| | |22| 50.6 | 36.3 | 43.4 | 42.7 | 32| 67| 21| 0|.........| 0| 0.00| 0.0| 30.10| 29.81|29.956| 5.6| 5.5|310| 27| NW| 0| 0| | |23| 51.5 | 38.4 | 45.0 | 44.8 | 26| 48| 20| 0|.........| 0| 0.00| 0.0| 30.15| 30.06|30.110| 1.9| 1.8|305| 25| NW| 0| 0| | |24| 50.5 | 36.8 | 43.7 | 43.9 | 28| 55| 21| 0|.........| 0| 0.00| 0.0| 30.22| 30.09|30.158| 0.0| 0.0| 0| 17|WNW| 0| 0| | |25| 50.5 | 40.9 | 45.7 | 44.7 | 36| 72| 19| 0|.........| 0| 0.00| 0.0| 30.48| 30.09|30.243| 4.3| 4.2| 49| 34| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 48.2 | 39.6 | 43.9 | 42.4 | 33| 71| 21| 0|.........| 0| 0.00| 0.0| 30.63| 30.47|30.564| 3.8| 3.8| 47| 32| NE| 0| 0| | |27| 52.1 | 38.4 | 45.3 | 44.3 | 38| 79| 20| 0|.........| 0| 0.00| 0.0| 30.58| 30.25|30.431| 0.0| 0.0| 0| 14|ENE| 0| 0| | |28| 76.2 | 44.6 | 60.4 | 59.9 | 52| 77| 4| 0|.........| 0| 0.00| 0.0| 30.23| 29.95|30.051| 0.0| 0.0| 0| 17|WSW| 0| 0| | |29| 82.1*| 60.0 | 71.1*| 70.8 | 60| 71| 0| 6|.........| 0| 0.00| 0.0| 30.02| 29.88|29.954| 0.5| 0.5|210| 24| SW| 0| 0| | |30| 72.1 | 53.0 | 62.5 | 66.3 | 60| 82| 2| 0|.........| 0| 0.07| 0.0| 30.12| 29.79|29.883| 0.3| 0.1|124| 24|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 59.9 | 43.0 | 51.5 | 50.8 | 36| 60| 13| 0|.........| 0| 0.00| 0.0| 30.36| 30.15|30.258| 0.0| 0.0| 0| 21| NW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1668.3|1187.5|------|------|---|----| 585| 6| Days | 3.82| 2.3| 30.63| 29.48|29.959| 2.3| 1.5|332| 53| NW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|-0.23" or 94% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 53.9| 38.4| 46.1 | 46.0 | 36|70.0|----|----|≥.01 Inch 9| 9.69| 16.3| 26 | 21 |------|----|----|---| 2 | 1+ | | + -6.1 -1.8 -4.0 -----+---+----+----+----+------------|-1.21" or 89% of normal +------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 1| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |2984| 19|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 1.07| 20-21| 2.3 | 12 | 2.3 | 12+ | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 6 | 0 |----|----| Clear 16 Partly Cloudy 4 Cloudy 11 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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: Solar Radiation 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: March 2018 was the 6th coldest March in the station database to 1977.
The top five coldest Marchs includes:
1) 44.6 2013 2) 44.9 1981 3) 45.8 1996 4) 45.9 1984 & 1980
6) 46.1 2018

FROPA: 2, 7, 12, 18, 21, 25, 28 (wrmfront), 30
FROST: 6, 8, 9, 10 (very early AM), 15, 17
STATION RECORDS:
2nd - WIND GUST 53mph [previous 38mph 2007]
12th - RAINFALL 0.86" [previous 0.75" 2010]
12th - SNOWFALL 2.3" [ none recorded on this date ]
21st - TEMPERATURE Minimum Maximum 41 [ previous 1986 ]

   MONTHLY AVERAGE MAXIMUM TEMP OF 53.9 WAS  6.1 BELOW NORMAL
   MONTHLY AVERAGE MINIMUM TEMP OF 38.4 WAS  1.8 BELOW NORMAL
   MONTHLY AVERAGE TEMPERATURE  OF 46.1 WAS  4.0 BELOW NORMAL

   MAXIMUM TEMP:  82 ON THE 29th
   MINIMUM TEMP:  28 ON THE 17th

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:   0
        MAXIMUM <= 32:   0
        MINIMUM <= 32:   6
        MINIMUM <=  0:   0

   HEATING DEGREE DAYS:  591.5 
   COOLING DEGREE DAYS:    1.0

   DAYS WITH HEATING DEGREE DAYS:   30
   DAYS WITH COOLING DEGREE DAYS:    1

   PRECIP TOTAL OF  3.82" WAS 0.23" BELOW NORMAL (94% OF NORMAL)
   
   GREATEST DAILY RAINFALL:    1.06" on the 20th   
   GREATEST 24-HOUR RAINFALL:  1.07" on the 20th-21st

   DAYS WITH MEASUREABLE PRECIP: 9 OF 31 DAYS OR 29.03% 
   AVERAGE DAILY PRECIP: 0.11"
   NORMAL DAILY PRECIP:  0.12"
                                   
   DAYS WITH PRECIP >= 0.01"     9 
   DAYS WITH PRECIP >= 0.10"     8 
   DAYS WITH PRECIP >= 0.50"     4
   DAYS WITH PRECIP >= 1.00"     1

   DAYS WITH THUNDERSTORMS:   0   
   NUMBER OF THUNDERSTORMS:   0 

   DAYS WITH SNOW:     2  
   SNOWFALL TOTAL:   2.3" 
   SEASONAL SNOWFALL 2017-2018 (beginning November 2017): 16.4" 

   CLOUDY DAYS:          11
   PARTLY CLOUDY DAYS     4 
   SUNNY/CLEAR DAYS:     16
   DAYS WITH F/GF:        4
   DAYS WITH DENSE FOG:   0 
   DAYS WITH FROST:       5

   YEAR-TO-DATE

   YEARLY  AVERAGE MAXIMUM TEMP OF 53.9 WAS 0.2 ABOVE NORMAL
   YEARLY  AVERAGE MINIMUM TEMP OF 35.5 WAS 0.2 ABOVE NORMAL
   YEARLY  AVERAGE TEMPERATURE  OF 44.7 WAS 0.2 ABOVE NORMAL

   MAXIMUM TEMP:  82 on March 29th 
   MINIMUM TEMP:   7 on January 6th 

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:    0
        MAXIMUM <= 32:    7
        MINIMUM <= 32:   33
        MINIMUM <=  0:    0

   HEATING DEGREE DAYS:   1844.5
   COOLING DEGREE DAYS:     18.0

   DAYS WITH HEATING DEGREE DAYS:  84
   DAYS WITH COOLING DEGREE DAYS:   5
                               
   PRECIP TOTAL OF 9.69" WAS 1.21" BELOW NORMAL (89% OF NORMAL).

   GREATEST DAILY RAINFALL:     1.06" on March 20th  
   GREATEST 24-HOUR RAINFALL:   1.21" on January 28th-29th             
   DAYS WITH MEASUREABLE PRECIP:  32 of 59 or 35.56%

   AVERAGE DAILY PRECIP: 0.11" 
   NORMAL DAILY PRECIP:  0.12"

   DAYS WITH PRECIP >= 0.01"    32
   DAYS WITH PRECIP >= 0.10"    23
   DAYS WITH PRECIP >= 0.50"     8
   DAYS WITH PRECIP >= 1.00"     1

   DAYS WITH THUNDERSTORMS:   0
   NUMBER OF THUNDERSTORMS:   0 
                                  
   DAYS WITH SNOW  (calendar year 2018):    8
   SNOWFALL TOTAL  (calendar year 2018): 16.4" 
   SEASONAL SNOW 2017-2018 (beginning November 2017):  16.4"
    
   CLOUDY DAYS:          32
   PARTLY CLOUDY DAYS:   22 
   SUNNY/CLEAR DAYS:     36
   DAYS WITH F/GF:       25 
   DAYS WITH DENSE FOG:   1
   DAYS WITH FROST:      31
OBSERVATIONS AT 3-HOUR INTERVALS
March 2018: KPWR Portsmouth, Virginia
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 1 | MAR 2 | MAR 3 | | | | | |01| |29.93| 0.00| 55| 51| 87|00| 0| 0| |29.49| 0.00| 55| 54| 95|27| 0| 18| |29.91| 0.00| 44| 26| 49|31| 12| 46| |04| |29.85| 0.03| 54| 53| 96|00| 0| 0| |29.54| 0.00| 52| 39| 60|27| 15| 48| |29.93| 0.00| 40| 27| 58|31| 11| 37| |07| |29.87| 0.00| 54| 53| 97|00| 0| 0| |29.61| 0.00| 47| 32| 55|29| 11| 36| |29.97| 0.00| 39| 27| 62|31| 13| 37| |10| |29.82| 0.00| 56| 56| 98|00| 0| 0| | | | | | | | | | |30.01| 0.00| 43| 30| 58|33| 12| 33| |13| |29.76| 0.01| 58| 56| 95|00| 0| 0| | | | | | | | | | |30.00| 0.00| 50| 31| 49|31| 11| 33| |16| |29.67| 0.15| 57| 57| 98|00| 0| 0| | | | | | | | | | |29.98| 0.00| 53| 33| 47|31| 7| 29| |19| |29.51| 0.06| 56| 56| 99|18| 0| 4| |29.79| 0.00| 49| 28| 44|29| 16| 49| |30.05| 0.00| 50| 33| 52|33| 4| 27| |22| |29.53| 0.00| 57| 57| 98|27| 0| 20| |29.87| 0.00| 46| 25| 43|31| 14| 53| |30.09| 0.00| 45| 32| 59|33| 7| 29| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 4 | MAR 5 | MAR 6 | | | | | |01| |30.12| 0.00| 42| 31| 65|33| 7| 29| |30.11| 0.00| 42| 21| 42|31| 0| 20| |30.08| 0.00| 32| 27| 84|00| 0| 0| |04| |30.11| 0.00| 41| 31| 68|33| 7| 29| |30.09| 0.00| 39| 23| 53|31| 0| 13| |30.04| 0.00| 29| 26| 88|00| 0| 0| |07| |30.14| 0.00| 39| 30| 71|31| 5| 24| |30.09| 0.00| 35| 18| 50|33| 0| 25| |30.07| 0.00| 29| 27| 91|00| 0| 0| |10| |30.17| 0.00| 44| 32| 61|31| 6| 26| |30.13| 0.00| 39| 22| 50|31| 4| 21| |30.04| 0.00| 45| 36| 71|00| 0| 0| |13| |30.15| 0.00| 47| 34| 60|04| 7| 27| |30.06| 0.00| 44| 24| 45|33| 4| 23| |29.99| 0.00| 50| 34| 53|11| 0| 4| |16| |30.09| 0.00| 47| 35| 63|06| 0| 19| |30.03| 0.00| 46| 26| 46|04| 0| 18| |29.94| 0.00| 46| 40| 80|00| 0| 0| |19| |30.10| 0.00| 44| 35| 71|02| 0| 10| |30.07| 0.00| 42| 27| 56|04| 0| 10| |29.87| 0.07| 42| 40| 94|11| 0| 4| |22| |30.12| 0.00| 44| 26| 49|33| 0| 4| |30.08| 0.00| 37| 28| 70|00| 0| 0| |29.80| 0.12| 42| 41| 97|09| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 7 | MAR 8 | MAR 9 | | | | | |01| |29.70| 0.14| 46| 45| 99|00| 0| 0| |29.87| 0.00| 41| 30| 64|27| 0| 7| |29.89| 0.00| 38| 25| 57|29| 0| 13| |04| |29.60| 0.00| 48| 47| 99|00| 0| 0| |29.87| 0.00| 35| 28| 75|00| 0| 0| |29.91| 0.00| 33| 23| 67|00| 0| 0| |07| |29.58| 0.00| 44| 43| 98|29| 0| 10| |29.88| 0.00| 31| 27| 84|00| 0| 0| |29.95| 0.00| 29| 23| 76|00| 0| 0| |10| |29.60| 0.00| 44| 43| 97|22| 0| 6| |29.90| 0.00| 42| 25| 49|29| 0| 16| |29.98| 0.00| 40| 23| 50|27| 0| 19| |13| |29.65| 0.00| 48| 43| 83|29| 5| 26| |29.82| 0.00| 48| 28| 45|22| 0| 20| |29.94| 0.00| 45| 22| 40|29| 0| 21| |16| |29.66| 0.00| 54| 42| 64|27| 10| 32| |29.77| 0.00| 48| 26| 42|29| 0| 20| |29.92| 0.00| 49| 23| 36|27| 0| 14| |19| |29.74| 0.00| 51| 39| 63|29| 0| 15| |29.82| 0.00| 43| 24| 47|27| 0| 6| |29.97| 0.00| 43| 24| 45|00| 0| 0| |22| |29.84| 0.00| 47| 32| 57|27| 0| 7| |29.85| 0.00| 39| 26| 59|27| 0| 6| |30.00| 0.00| 36| 26| 65|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 10 | MAR 11 | MAR 12 | | | | | |01| |30.05| 0.00| 36| 28| 74|00| 0| 0| |30.05| 0.00| 43| 40| 89|00| 0| 0| |29.96| 0.01| 40| 38| 93|00| 0| 0| |04| |30.04| 0.00| 38| 30| 70|00| 0| 0| |30.04| 0.00| 44| 41| 89|00| 0| 0| |29.89| 0.00| 41| 38| 90|00| 0| 0| |07| |30.06| 0.00| 39| 31| 73|00| 0| 0| |30.04| 0.00| 44| 37| 76|04| 0| 12| |29.85| 0.01| 42| 38| 86|04| 0| 10| |10| |30.07| 0.00| 45| 33| 64|00| 0| 0| |30.11| 0.00| 44| 37| 77|06| 0| 15| |29.77| 0.00| 42| 39| 87|04| 7| 23| |13| |30.00| 0.00| 48| 39| 70|00| 0| 0| |30.09| 0.00| 45| 38| 74|04| 0| 18| |29.71| 0.01| 42| 41| 95|04| 13| 25| |16| |29.97| 0.00| 51| 44| 77|00| 0| 0| |30.04| 0.00| 45| 35| 68|06| 0| 4| |29.61| 0.00| 41| 40| 95|00| 13| 34| |19| |30.02| 0.00| 48| 43| 81|00| 0| 0| |30.04| 0.00| 42| 31| 65|04| 0| 5| |29.63| 0.19| 35| 34| 95|00| 12| 27| |22| |30.03| 0.00| 45| 41| 85|00| 0| 0| |30.03| 0.03| 40| 38| 90|00| 0| 0| |29.63| 0.14| 35| 34| 98|00| 0| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 13 | MAR 14 | MAR 15 | | | | | |01| |29.66| 0.00| 37| 35| 93|00| 15| 29| |29.89| 0.00| 35| 27| 71|00| 0| 0| |29.90| 0.00| 35| 20| 53|27| 0| 21| |04| |29.71| 0.00| 36| 34| 89|00| 13| 30| |29.85| 0.00| 31| 26| 80|00| 0| 0| |29.91| 0.00| 32| 20| 62|24| 0| 7| |07| |29.77| 0.00| 36| 29| 76|00| 13| 33| |29.85| 0.00| 33| 28| 80|00| 0| 0| |29.91| 0.00| 29| 22| 73|00| 0| 0| |10| | | | | | | | | | |29.86| 0.00| 38| 28| 67|31| 0| 18| |29.85| 0.00| 39| 26| 60|20| 0| 13| |13| |29.84| 0.00| 45| 31| 58|29| 4| 26| |29.82| 0.00| 42| 24| 49|31| 3| 21| |29.75| 0.00| 51| 29| 42|22| 4| 29| |16| |29.81| 0.00| 48| 30| 51|29| 5| 27| |29.78| 0.00| 44| 22| 42|29| 4| 25| |29.62| 0.00| 59| 32| 36|24| 4| 29| |19| |29.85| 0.00| 46| 29| 52|27| 0| 20| |29.82| 0.00| 41| 19| 41|27| 5| 28| |29.60| 0.00| 60| 30| 33|27| 4| 24| |22| |29.92| 0.00| 41| 28| 59|27| 0| 15| |29.88| 0.00| 37| 20| 50|24| 0| 20| |29.70| 0.00| 45| 33| 63|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 16 | MAR 17 | MAR 18 | | | | | |01| |29.73| 0.00| 39| 32| 76|00| 0| 0| |30.06| 0.00| 40| 24| 52|00| 0| 0| |29.83| 0.01| 43| 38| 83|04| 0| 4| |04| |29.73| 0.00| 38| 32| 77|29| 0| 13| |30.03| 0.00| 31| 26| 79|00| 0| 0| |29.83| 0.03| 42| 40| 94|00| 0| 0| |07| |29.79| 0.00| 36| 31| 84|00| 0| 0| |30.06| 0.00| 28| 25| 85|00| 0| 0| |29.89| 0.00| 42| 37| 82|33| 0| 16| |10| |29.87| 0.00| 47| 35| 63|06| 0| 4| |30.01| 0.00| 43| 32| 65|18| 0| 4| |29.95| 0.00| 44| 35| 68|04| 4| 22| |13| |29.91| 0.00| 49| 33| 53|06| 0| 16| |29.91| 0.00| 55| 33| 43|20| 0| 4| |30.00| 0.00| 48| 26| 42|06| 4| 20| |16| |29.91| 0.00| 53| 25| 34|31| 5| 26| |29.79| 0.00| 56| 36| 47|13| 0| 13| |29.94| 0.00| 52| 31| 45|04| 0| 11| |19| |29.97| 0.00| 51| 27| 39|31| 0| 21| |29.81| 0.00| 51| 36| 55|04| 0| 4| |29.94| 0.00| 53| 31| 44|06| 0| 4| |22| |30.03| 0.00| 41| 30| 65|00| 0| 0| |29.81| 0.00| 44| 36| 74|00| 0| 0| |29.96| 0.00| 43| 34| 70|11| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.03 | 0.05 | 0.08 | 0.10 | 0.15 | 0.22 | 0.29 | 0.35 | 0.41 | 0.47 | 0.55 | 0.64 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0704 | 0706 | 0714 | 0719 | 0729 | 0744 | 0800 | 0800 | 0800 | 0800 | 0757 | 0800 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
March 2018: KPWR Portsmouth, Virginia
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 19 | MAR 20 | MAR 21 | | | | | |01| |29.94| 0.00| 39| 33| 79|00| 0| 0| |29.76| 0.01| 49| 47| 94|06| 0| 14| |29.56| 0.00| 41| 40| 96|04| 10| 21| |04| |29.92| 0.00| 37| 34| 88|00| 0| 0| |29.68| 0.14| 49| 47| 96|06| 0| 11| |29.48| 0.05| 38| 38| 97|00| 0| 18| |07| |29.91| 0.00| 36| 34| 91|00| 0| 0| |29.63| 0.18| 48| 48| 98|04| 0| 17| |29.53| 0.00| 39| 38| 97|31| 0| 15| |10| |29.91| 0.00| 46| 40| 82|00| 0| 0| |29.52| 0.00| 49| 48| 99|04| 0| 13| |29.56| 0.02| 38| 37| 97|27| 0| 13| |13| |29.89| 0.00| 58| 42| 55|06| 0| 5| |29.53| 0.01| 48| 48| 98|06| 0| 7| |29.57| 0.00| 39| 38| 96|27| 0| 4| |16| |29.81| 0.00| 63| 49| 61|13| 0| 13| |29.60| 0.00| 45| 43| 94|33| 14| 30| |29.58| 0.01| 38| 37| 93|29| 6| 21| |19| |29.82| 0.00| 55| 48| 77|00| 0| 0| |29.64| 0.00| 41| 39| 93|33| 13| 31| |29.67| 0.00| 37| 35| 92|29| 10| 23| |22| |29.82| 0.00| 51| 46| 84|00| 0| 0| |29.61| 0.00| 41| 38| 92|04| 12| 27| |29.76| 0.00| 36| 34| 93|29| 7| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 22 | MAR 23 | MAR 24 | | | | | |01| |29.81| 0.00| 37| 34| 91|31| 10| 27| |30.10| 0.00| 43| 26| 51|29| 0| 18| |30.17| 0.00| 44| 28| 53|33| 0| 15| |04| |29.84| 0.00| 37| 34| 89|31| 11| 22| |30.10| 0.00| 41| 24| 51|29| 4| 24| |30.17| 0.00| 39| 25| 57|33| 0| 14| |07| |29.91| 0.00| 37| 33| 85|29| 6| 18| |30.14| 0.00| 39| 24| 55|31| 0| 22| |30.19| 0.00| 37| 25| 62|33| 0| 15| |10| |29.98| 0.00| 40| 32| 72|29| 6| 22| |30.15| 0.00| 42| 25| 50|29| 4| 23| |30.22| 0.00| 42| 28| 57|29| 0| 14| |13| |29.99| 0.00| 46| 32| 58|31| 6| 22| |30.10| 0.00| 47| 25| 41|29| 4| 19| |30.18| 0.00| 47| 26| 43|27| 0| 13| |16| |29.95| 0.00| 50| 33| 51|33| 4| 21| |30.07| 0.00| 51| 25| 36|31| 4| 23| |30.11| 0.00| 50| 28| 43|31| 0| 11| |19| |30.00| 0.00| 48| 27| 44|27| 0| 6| |30.07| 0.00| 50| 27| 40|29| 0| 16| |30.09| 0.00| 49| 34| 56|00| 0| 0| |22| |30.08| 0.00| 45| 30| 55|00| 0| 0| |30.13| 0.00| 45| 30| 55|06| 0| 19| |30.13| 0.00| 44| 33| 66|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 25 | MAR 26 | MAR 27 | | | | | |01| |30.14| 0.00| 43| 35| 75|00| 0| 0| |30.48| 0.00| 41| 33| 74|04| 6| 28| |30.58| 0.00| 40| 35| 84|00| 0| 0| |04| |30.10| 0.00| 42| 37| 82|00| 0| 0| |30.47| 0.00| 40| 31| 71|04| 6| 30| |30.54| 0.00| 39| 35| 86|00| 0| 0| |07| |30.10| 0.00| 42| 36| 78|04| 0| 4| |30.51| 0.00| 40| 29| 66|04| 4| 27| |30.51| 0.00| 39| 36| 89|00| 0| 0| |10| |30.18| 0.00| 47| 36| 66|06| 0| 15| |30.58| 0.00| 43| 33| 66|04| 5| 27| |30.53| 0.00| 45| 38| 77|02| 0| 5| |13| |30.24| 0.00| 50| 35| 58|06| 5| 26| |30.60| 0.00| 47| 35| 63|04| 5| 25| |30.46| 0.00| 51| 40| 66|11| 0| 4| |16| |30.28| 0.00| 48| 36| 62|06| 7| 27| |30.58| 0.00| 46| 35| 64|04| 5| 24| |30.38| 0.00| 48| 40| 72|06| 0| 14| |19| |30.36| 0.00| 45| 38| 77|04| 13| 32| |30.60| 0.00| 42| 34| 74|06| 6| 26| |30.31| 0.00| 47| 40| 76|00| 0| 0| |22| |30.44| 0.00| 42| 34| 72|04| 10| 31| |30.63| 0.00| 40| 34| 79|04| 0| 10| |30.28| 0.00| 45| 40| 83|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 28 | MAR 29 | MAR 30 | | | | | |01| |30.23| 0.00| 45| 41| 86|00| 0| 0| |30.00| 0.00| 65| 59| 80|27| 0| 4| |29.89| 0.00| 68| 61| 79|20| 0| 21| |04| |30.14| 0.00| 46| 43| 88|00| 0| 0| |29.98| 0.00| 64| 58| 82|20| 0| 6| |29.87| 0.00| 67| 62| 83|20| 0| 14| |07| |30.10| 0.00| 45| 43| 92|00| 0| 0| |30.00| 0.00| 60| 57| 89|20| 0| 13| |29.85| 0.00| 67| 63| 87|22| 0| 18| |10| |30.07| 0.00| 55| 51| 84|24| 0| 17| |30.02| 0.00| 70| 61| 73|20| 0| 10| |29.85| 0.00| 70| 66| 86|20| 0| 24| |13| |30.02| 0.00| 69| 56| 64|29| 0| 14| |29.98| 0.00| 80| 63| 56|22| 0| 20| |29.82| 0.00| 68| 66| 94|20| 0| 22| |16| |29.95| 0.00| 76| 60| 58|24| 0| 15| |29.90| 0.00| 82| 63| 53|22| 0| 18| |29.79| 0.00| 72| 64| 76|20| 4| 24| |19| |29.99| 0.00| 73| 60| 65|22| 0| 14| |29.88| 0.00| 76| 61| 59|20| 0| 20| |29.85| 0.00| 69| 63| 80|18| 0| 6| |22| |30.00| 0.00| 66| 59| 77|00| 0| 0| |29.91| 0.00| 70| 61| 75|20| 0| 7| |30.05| 0.00| 55| 45| 70|33| 0| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 31 | | | | | | | |01| |30.15| 0.00| 52| 42| 69|00| 0| 0| | | |04| |30.22| 0.00| 48| 35| 61|31| 0| 21| | | |07| |30.29| 0.00| 45| 34| 66|33| 0| 18| | | |10| |30.36| 0.00| 49| 36| 60|06| 0| 16| | | |13| |30.33| 0.00| 54| 36| 51|06| 0| 7| | | |16| |30.25| 0.00| 60| 33| 37|06| 0| 4| | | |19| |30.22| 0.00| 56| 35| 45|18| 0| 4| | | |22| |30.23| 0.00| 46| 39| 78|15| 0| 12| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |29.969| 43| 36| 75| 1.9| 35 | 1.6| |04| |29.951| 42| 35| 78| 2.2| 32 | 1.7| |07| |29.970| 40| 34| 79| 1.7| 32 | 1.4| |10| |30.003| 46| 36| 71| 1.7| 34 | 1.2| |13| |29.971| 51| 37| 61| 2.5| 35 | 1.4| |16| |29.927| 53| 37| 59| 3.1| 32 | 2.0| |19| |29.939| 49| 36| 63| 2.7| 33 | 1.8| |22| |29.976| 45| 36| 72| 1.6| 35 | 1.1| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
March 2018: KPWR Portsmouth, Virginia
---+-----------------------------------------------------------+-----------------------------------------------------------+--- | | | 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| | |0.02|0.03| | | | | | |0.01| |0.01|0.02|0.19|0.15|0.03|0.02|0.06| | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | |0.02|0.04|0.07|0.08|0.13|0.12|0.13|0.08|06 07|0.14|0.03| | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | |0.01|0.01|0.03|0.04|0.04|11 12|0.01| | | | | |0.01| | | | |0.03|0.01|0.03| | |0.10|0.06|0.19|0.14|0.14|0.14| | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18|0.01|0.06|0.08|0.03| | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20|0.01| | |0.14|0.10|0.17|0.18|0.28|0.02| |0.12|0.03|0.01| | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | |0.02|0.05| | | |0.01|0.01|0.02| | | |0.01|0.01|0.01| | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | |0.07| | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.17|0.09|0.12|0.25|0.10|0.17|0.19|0.29|0.03|0.02|0.13|0.13|0.03|0.06|0.20|0.16|0.15|0.12|0.32|0.23|0.28|0.29|0.17|0.12|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.)