LOCAL CLIMATOLOGICAL DATA Monthly Summary
May 2019
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| 90.0 | 64.4 | 77.2 | 78.0 | 67| 71| 0| 12|.........| 0| 0.00| 0.0| 30.29| 30.17|30.223| 6.4| 6.0|184| 22| S| 0| 0| | |02| 88.4 | 66.8 | 77.6 | 76.9 | 65| 70| 0| 13|.........| 0| 0.00| 0.0| 30.20| 30.07|30.144| 7.5| 7.3|209| 30| SW| 0| 0| | |03| 87.4 | 64.9 | 76.2 | 76.5 | 67| 75| 0| 11|.........| 0| 0.00| 0.0| 30.11| 29.91|30.014| 7.1| 6.8|202| 25| S| 0| 0| | |04| 89.1 | 69.9 | 79.5 | 78.7 | 71| 78| 0| 15|.........| 0| 0.00| 0.0| 29.93| 29.73|29.818| 5.3| 4.6|218| 20| S| 0| 0| | |05| 77.7 | 62.7 | 70.2 | 71.9 | 69| 93| 0| 6|.........| 0| 1.25| 0.0| 29.76| 29.58|29.683| 6.0| 4.2|242| 27| NW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 70.8 | 57.5 | 64.2 | 63.4 | 59| 85| 0| 0|.........| 0| 0.01| 0.0| 30.12| 29.79|29.975| 8.1| 5.9|357| 25|NNW| 0| 0| | |07| 80.6 | 54.1 | 67.3 | 67.6 | 60| 78| 0| 3|.........| 0| 0.00| 0.0| 30.20| 30.11|30.146| 4.7| 4.5|166| 20|SSE| 0| 0| | |08| 85.5 | 58.9 | 72.2 | 71.8 | 62| 74| 0| 8|.........| 0| 0.00| 0.0| 30.16| 30.07|30.125| 5.8| 5.5|167| 22|SSE| 0| 0| | |09| 83.3 | 66.1 | 74.7 | 74.5 | 65| 74| 0| 10|.........| 0| 0.00| 0.0| 30.19| 30.09|30.142| 7.9| 7.8|162| 24|SSE| 0| 0| | |10| 84.9 | 62.6 | 73.8 | 74.8 | 65| 74| 0| 9|.........| 0| 0.00| 0.0| 30.12| 29.99|30.054| 6.0| 5.6|197| 25|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 84.6 | 68.0 | 76.3 | 72.7 | 69| 89| 0| 12|..3......| 0| 1.79| 0.0| 30.01| 29.86|29.948| 5.5| 1.3|147| 25| NE| 0| 0| | |12| 78.2 | 62.8 | 70.5 | 70.5 | 69| 96| 0| 6|.........| 0| 0.30| 0.0| 29.84| 29.64|29.724| 7.0| 3.9|202| 26|SSW| 0| 0| | |13| 66.8 | 57.8 | 62.3 | 61.2 | 59| 93| 2| 0|1........| 0| 0.02| 0.0| 29.82| 29.69|29.731| 7.3| 5.0| 16| 24| NW| 0| 0| | |14| 64.3 | 55.2 | 59.8*| 58.7 | 54| 84| 5| 0|.........| 0| 0.09| 0.0| 29.95| 29.80|29.859| 5.0| 3.3|333| 30| NW| 0| 0| | |15| 73.2 | 53.1*| 63.1 | 62.1 | 48| 61| 2| 0|.........| 0| 0.00| 0.0| 30.01| 29.94|29.966| 6.8| 5.1|323| 27| NW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 81.4 | 53.1 | 67.3 | 67.7 | 53| 61| 0| 2|.........| 0| 0.00| 0.0| 29.97| 29.87|29.928| 5.0| 4.2|249| 26|WSW| 0| 0| | |17| 87.4 | 59.5 | 73.4 | 74.7 | 64| 71| 0| 9|.........| 0| 0.00| 0.0| 29.92| 29.77|29.855| 6.1| 4.5|236| 24| W| 0| 0| | |18| 83.6 | 64.9 | 74.3 | 74.0 | 68| 84| 0| 10|..3....8.| 0| 0.58| 0.0| 30.03| 29.87|29.958| 5.4| 1.2| 89| 31|WNW| 0| 0| | |19| 93.6 | 68.1 | 80.8 | 80.6 | 71| 74| 0| 16|.......8.| 0| 0.00| 0.0| 30.06| 29.94|30.003| 6.4| 5.9|191| 26| S| 0| 0| | |20| 91.0 | 70.5 | 80.8 | 81.3 | 70| 70| 0| 16|.......8.| 0| 0.06| 0.0| 29.99| 29.82|29.916| 7.3| 7.1|212| 23|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 76.4 | 66.1 | 71.3 | 71.7 | 62| 74| 0| 6|.........| 0| 0.00| 0.0| 30.10| 29.85|29.965| 8.3| 5.5| 39| 23| NE| 0| 0| | |22| 74.0 | 56.7 | 65.3 | 67.7 | 53| 60| 0| 1|.........| 0| 0.00| 0.0| 30.26| 30.10|30.211| 5.5| 4.2| 77| 21|ENE| 0| 0| | |23| 87.3 | 58.3 | 72.8 | 74.5 | 66| 74| 0| 8|.........| 0| 0.00| 0.0| 30.25| 30.02|30.145| 6.4| 6.2|206| 26| SW| 0| 0| | |24| 88.1 | 73.2 | 80.6 | 80.4 | 69| 69| 0| 16|.........| 0| 0.00| 0.0| 30.07| 29.96|29.993| 7.8| 2.3| 29| 21| SW| 0| 0| | |25| 87.5 | 65.5 | 76.5 | 77.9 | 67| 69| 0| 12|.........| 0| 0.00| 0.0| 30.17| 30.06|30.111| 5.7| 5.3|157| 23|SSE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 95.3 | 73.5 | 84.4 | 83.6 | 73| 72| 0| 20|.........| 0| 0.00| 0.0| 30.05| 29.90|29.984| 6.1| 3.6|199| 19|SSW| 0| 0| | |27| 84.1 | 74.4 | 79.3 | 79.3 | 70| 75| 0| 14|.........| 0| 0.00| 0.0| 29.93| 29.86|29.906| 7.1| 3.6| 36| 20|NNW| 0| 0| | |28| 95.4 | 69.9 | 82.7 | 83.0 | 72| 71| 0| 18|.......8.| 0| T | 0.0| 29.91| 29.73|29.832| 5.3| 4.7|200| 23| W| 0| 0| | |29| 97.3 | 73.6 | 85.4 | 86.9 | 70| 59| 0| 21|.......8.| 0| 0.00| 0.0| 29.80| 29.70|29.756| 6.2| 5.7|259| 28| W| 0| 0| | |30| 98.1*| 73.0 | 85.6*| 87.0 | 68| 56| 0| 21|.......8.| 0| 0.00| 0.0| 29.85| 29.71|29.779| 6.2| 5.3|237| 24| SW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 83.7 | 68.7 | 76.2 | 75.5 | 70| 86| 0| 12|..3......| 0| 0.66| 0.0| 29.85| 29.75|29.795| 5.3| 0.1|303| 31|NNW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2609.0|1993.8|------|------|---|----| 9| 307| Days | 4.76| 0.0| 30.29| 29.58|29.958| 6.3| 2.2|206| 31|WNW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+0.24" or 105% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 84.1| 64.3| 74.2 | 74.4 | 65|74.8|----|----|≥.01 Inch 9|18.89| T | 1 | 5 |------|----|----|---| 18+ | 1+ | | + +6.2 +6.0 +6.1 +---+----+----+----+------------|-0.02" or 99% 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 |2897| 403|Thunder 3|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 2.09| 11-12| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 7 | 0 | 0 | 0 |----|----| Clear 20 Partly Cloudy 8 Cloudy 3 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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. Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean. OBSERVER NOTES: With an average temperature of 74.2, May 2019 TIED May 2018 for the warmest average temperature for the month of May. The average was 6.1 above normal. [ May data base to 1977] FROPA: 5, 12, 14, 18, 21, 24, 25 WRMFROP, 27
RECORDS:
4th - TEMP Max Lo 70 [previous 66 1984]
11th - RAIN 1.79" [prev 0.89" 2015]
20th - TEMP TIED Max Lo 70 [prev 1996]
24th - TEMP Max Lo 73 [prev 71 1987]
27th - TEMP Max 95 [prev 93 1991]
28th - TEMP Max 95 [prev 92 2014]
27th - TEMP Max Lo 73 [prev 72 1984]
29th - TEMP Max 97 [prev 92 1991]
29th - TEMP Max Lo 74 [prev 71]
30th - TEMP Max 98 [prev 96 1991]
30th - TEMP Max lo TIED [prev 2018]
31st - GUST 31 mph [prev 29 2004]

   MONTHLY AVERAGE MAXIMUM TEMP OF 84.1 WAS  6.1 ABOVE NORMAL
   MONTHLY AVERAGE MINIMUM TEMP OF 64.3 WAS  6.0 ABOVE NORMAL
   MONTHLY AVERAGE TEMPERATURE  OF 74.2 WAS  6.1 ABOVE NORMAL

   MAXIMUM TEMP:  98 on the 30th
   MINIMUM TEMP:  53 on the 15th & 16th

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

   HEATING DEGREE DAYS:   11.0 
   COOLING DEGREE DAYS:  296.0

   DAYS WITH HEATING DEGREE DAYS:    4
   DAYS WITH COOLING DEGREE DAYS:   27

   PRECIP TOTAL OF  4.76" WAS +0.24" ABOVE NORMAL ( 105% OF NORMAL )
   
   GREATEST DAILY RAINFALL:    1.79" on the 11th   
   GREATEST 24-HOUR RAINFALL:  2.09" on the 11th-12th

   DAYS WITH MEASUREABLE PRECIP:  9 OF 31 DAYS OR 29.03% 
   AVERAGE DAILY PRECIP: 0.15"
   NORMAL DAILY PRECIP:  0.15"
                                   
   DAYS WITH PRECIP >= 0.01"     9 
   DAYS WITH PRECIP >= 0.10"     5 
   DAYS WITH PRECIP >= 0.50"     4
   DAYS WITH PRECIP >= 1.00"     2

   DAYS WITH THUNDERSTORMS:   3   
   NUMBER OF THUNDERSTORMS:   5 

   DAYS WITH SNOW:     0
   SNOWFALL TOTAL:     T 
   SEASONAL SNOWFALL 2018-2019 (beginning November 2018): TRACE 

   CLOUDY DAYS:           3
   PARTLY CLOUDY DAYS     8 
   SUNNY/CLEAR DAYS:     20
   DAYS WITH F/GF:        1
   DAYS WITH DENSE FOG:   0 
   DAYS WITH FROST:       0

   YEAR-TO-DATE

   YEARLY  AVERAGE MAXIMUM TEMP OF 65.1 WAS 3.1 ABOVE NORMAL
   YEARLY  AVERAGE MINIMUM TEMP OF 46.2 WAS 3.4 ABOVE NORMAL
   YEARLY  AVERAGE TEMPERATURE  OF 55.7 WAS 3.3 ABOVE NORMAL

   MAXIMUM TEMP:  98 on May 30th 
   MINIMUM TEMP:  19 on January 22nd 

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:    9
        MAXIMUM <= 32:    1
        MINIMUM <= 32:   29
        MINIMUM <=  0:    0

   HEATING DEGREE DAYS:   1798.0
   COOLING DEGREE DAYS:    387.5

   DAYS WITH HEATING DEGREE DAYS:  104
   DAYS WITH COOLING DEGREE DAYS:   46
                               
   PRECIP TOTAL OF 18.89" WAS 0.02" BELOW NORMAL ( 99% OF NORMAL).

   GREATEST DAILY RAINFALL:     1.79" on May 11th  
   GREATEST 24-HOUR RAINFALL:   2.09" on May 11th-12th
   DAYS WITH MEASUREABLE PRECIP:  57 of 151 or 37.75%

   AVERAGE DAILY PRECIP: 0.13" 
   NORMAL DAILY PRECIP:  0.13"

   DAYS WITH PRECIP >= 0.01"    57
   DAYS WITH PRECIP >= 0.10"    33
   DAYS WITH PRECIP >= 0.50"    16
   DAYS WITH PRECIP >= 1.00"     4

   DAYS WITH THUNDERSTORMS:   7
   NUMBER OF THUNDERSTORMS:   9 
                                  
   DAYS WITH SNOW  (calendar year 2019):    2
   SNOWFALL TOTAL  (calendar year 2019):  TRACE 
   SEASONAL SNOW 2018-2019 (beginning November 2018):  TRACE
    
   CLOUDY DAYS:          31
   PARTLY CLOUDY DAYS:   51 
   SUNNY/CLEAR DAYS:     69
   DAYS WITH F/GF:       11 
   DAYS WITH DENSE FOG:   0
   DAYS WITH FROST:      20
OBSERVATIONS AT 3-HOUR INTERVALS
May 2019: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 1 | MAY 2 | MAY 3 | | | | | |01| |30.23| 0.00| 72| 68| 87|18| 4| 10| |30.20| 0.00| 71| 66| 84|20| 7| 18| |30.11| 0.00| 70| 65| 82|20| 5| 16| |04| |30.21| 0.00| 68| 65| 90|22| 4| 7| |30.17| 0.00| 69| 66| 90|20| 7| 19| |30.07| 0.00| 67| 64| 91|20| 5| 12| |07| |30.27| 0.00| 65| 62| 92|22| 0| 4| |30.19| 0.00| 67| 66| 95|20| 6| 15| |30.07| 0.00| 65| 64| 96|22| 5| 11| |10| |30.28| 0.00| 83| 70| 65|18| 5| 11| |30.19| 0.00| 76| 70| 80|20| 10| 27| |30.07| 0.00| 77| 70| 79|22| 7| 24| |13| |30.24| 0.00| 88| 72| 60|15| 11| 20| |30.16| 0.00| 84| 71| 65|22| 7| 19| |30.04| 0.00| 84| 66| 56|20| 10| 19| |16| |30.18| 0.00| 90| 66| 45|18| 11| 21| |30.10| 0.00| 88| 61| 41|20| 10| 22| |29.96| 0.00| 87| 66| 50|22| 10| 20| |19| |30.17| 0.00| 90| 64| 42|18| 7| 19| |30.07| 0.00| 86| 60| 42|20| 10| 22| |29.91| 0.00| 86| 70| 60|18| 10| 20| |22| |30.21| 0.00| 76| 68| 77|18| 11| 22| |30.11| 0.00| 75| 64| 67|22| 5| 11| |29.95| 0.00| 77| 70| 78|18| 7| 17| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 4 | MAY 5 | MAY 6 | | | | | |01| |29.93| 0.00| 74| 71| 90|18| 6| 20| |29.74| 0.00| 77| 70| 79|27| 6| 18| |29.79| 0.01| 62| 61| 97|33| 7| 18| |04| |29.88| 0.00| 71| 69| 94|18| 4| 11| |29.73| 0.00| 73| 68| 84|22| 4| 12| |29.81| 0.00| 58| 56| 92|33| 12| 23| |07| |29.88| 0.00| 70| 69| 97|22| 6| 14| |29.73| 0.00| 71| 66| 85|20| 5| 15| |29.91| 0.00| 58| 56| 93|33| 11| 22| |10| |29.88| 0.00| 78| 71| 81|22| 6| 17| |29.73| 0.11| 69| 69| 98|20| 5| 14| |30.00| 0.00| 61| 58| 90|33| 10| 20| |13| |29.81| 0.00| 84| 72| 69|22| 6| 15| |29.67| 0.01| 75| 73| 94|22| 7| 19| |30.01| 0.00| 65| 59| 81|33| 11| 22| |16| |29.75| 0.00| 87| 71| 60|24| 6| 16| |29.59| 0.48| 74| 73| 97|20| 5| 14| |30.01| 0.00| 69| 60| 74|06| 7| 16| |19| |29.73| 0.00| 88| 69| 54|24| 5| 12| |29.59| 0.01| 71| 70| 99|20| 6| 19| |30.06| 0.00| 71| 61| 71|04| 5| 11| |22| |29.76| 0.00| 80| 72| 79|18| 4| 7| |29.67| 0.00| 69| 68| 99|31| 7| 18| |30.11| 0.00| 65| 60| 85|15| 5| 11| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 7 | MAY 8 | MAY 9 | | | | | |01| |30.11| 0.00| 59| 57| 92|15| 0| 4| |30.15| 0.00| 62| 58| 87|18| 4| 10| |30.16| 0.00| 69| 66| 89|15| 7| 16| |04| |30.12| 0.00| 56| 54| 94|15| 0| 4| |30.12| 0.00| 60| 58| 93|18| 4| 5| |30.16| 0.00| 68| 65| 89|15| 4| 11| |07| |30.15| 0.00| 55| 54| 97|15| 0| 5| |30.14| 0.00| 59| 58| 96|18| 0| 5| |30.18| 0.00| 66| 62| 88|18| 4| 7| |10| |30.19| 0.00| 70| 62| 75|18| 5| 11| |30.15| 0.00| 75| 67| 76|22| 6| 14| |30.17| 0.00| 79| 68| 69|18| 7| 15| |13| |30.18| 0.00| 76| 64| 68|18| 6| 14| |30.14| 0.00| 82| 63| 53|18| 6| 15| |30.13| 0.00| 82| 65| 57|15| 10| 20| |16| |30.13| 0.00| 80| 63| 56|15| 7| 15| |30.08| 0.00| 84| 64| 51|15| 7| 17| |30.13| 0.00| 83| 68| 60|15| 12| 24| |19| |30.13| 0.00| 79| 63| 59|15| 11| 20| |30.09| 0.00| 80| 59| 48|15| 10| 19| |30.10| 0.00| 80| 66| 61|15| 12| 23| |22| |30.14| 0.00| 67| 60| 79|15| 6| 15| |30.15| 0.00| 71| 64| 78|15| 7| 15| |30.11| 0.00| 71| 64| 78|15| 7| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 10 | MAY 11 | MAY 12 | | | | | |01| |30.12| 0.00| 67| 63| 87|15| 6| 13| |30.01| 0.00| 71| 66| 86|20| 5| 12| |29.84| 0.00| 68| 68|100|13| 4| 10| |04| |30.10| 0.00| 64| 61| 91|18| 4| 5| |29.98| 0.00| 68| 66| 91|18| 5| 12| |29.77| 0.00| 68| 68|100|20| 5| 13| |07| |30.11| 0.00| 64| 63| 97|18| 4| 10| |30.01| 0.00| 69| 66| 93|22| 5| 13| |29.75| 0.00| 68| 68|100|20| 6| 17| |10| |30.09| 0.00| 79| 69| 70|20| 7| 18| |30.00| 0.00| 75| 70| 86|22| 5| 13| |29.74| 0.01| 69| 69|100|20| 6| 16| |13| |30.07| 0.00| 82| 67| 61|20| 7| 18| |29.96| 0.00| 82| 73| 73|18| 5| 12| |29.69| 0.00| 74| 74|100|20| 11| 26| |16| |30.00| 0.00| 85| 67| 56|22| 10| 21| |29.91| 0.00| 79| 71| 77|06| 11| 19| |29.64| 0.21| 74| 73| 95|24| 10| 23| |19| |29.99| 0.00| 83| 66| 56|20| 7| 17| |29.87| 0.01| 71| 70| 96|06| 5| 14| |29.66| 0.00| 74| 71| 89|22| 6| 20| |22| |30.00| 0.00| 75| 66| 72|15| 4| 10| |29.87| 0.06| 69| 69|100|06| 4| 10| |29.72| 0.00| 66| 64| 93|04| 10| 17| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 13 | MAY 14 | MAY 15 | | | | | |01| |29.73| 0.00| 60| 59| 95|06| 7| 18| |29.82| 0.00| 59| 56| 89|04| 4| 7| |29.95| 0.00| 56| 46| 69|31| 6| 21| |04| |29.70| 0.00| 59| 58| 97|04| 10| 17| |29.80| 0.00| 56| 54| 93|04| 0| 5| |29.94| 0.00| 55| 46| 71|33| 10| 19| |07| |29.72| 0.00| 58| 57| 98|06| 10| 16| |29.84| 0.00| 56| 55| 97|20| 0| 5| |29.98| 0.00| 54| 47| 77|33| 6| 16| |10| |29.72| 0.01| 60| 59| 99|04| 5| 12| |29.87| 0.00| 59| 56| 90|29| 4| 11| |30.01| 0.00| 62| 48| 61|33| 10| 17| |13| |29.69| 0.00| 63| 61| 94|33| 6| 14| |29.86| 0.00| 62| 55| 76|06| 7| 16| |29.99| 0.00| 66| 48| 52|31| 7| 18| |16| |29.69| 0.00| 66| 62| 88|33| 7| 17| |29.86| 0.05| 58| 55| 90|31| 10| 30| |29.94| 0.00| 70| 46| 42|33| 10| 18| |19| |29.75| 0.00| 63| 59| 86|31| 7| 18| |29.87| 0.00| 61| 54| 76|29| 7| 17| |29.94| 0.00| 73| 49| 44|27| 5| 15| |22| |29.81| 0.00| 60| 57| 87|04| 5| 12| |29.93| 0.00| 59| 48| 66|33| 10| 19| |29.97| 0.00| 63| 51| 65|20| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 16 | MAY 17 | MAY 18 | | | | | |01| |29.97| 0.00| 57| 50| 77|22| 4| 10| |29.92| 0.00| 63| 56| 78|15| 0| 5| |29.91| 0.40| 70| 68| 91|29| 10| 31| |04| |29.94| 0.00| 56| 50| 80|22| 5| 11| |29.89| 0.00| 60| 54| 83|18| 4| 10| |29.87| 0.00| 66| 65| 97|20| 4| 10| |07| |29.95| 0.00| 54| 50| 87|20| 5| 11| |29.90| 0.00| 61| 59| 94|22| 4| 12| |29.93| 0.00| 66| 65| 99|20| 0| 5| |10| |29.97| 0.00| 70| 56| 62|27| 6| 14| |29.90| 0.00| 77| 69| 75|22| 7| 19| |29.98| 0.00| 73| 70| 89|31| 5| 15| |13| |29.93| 0.00| 75| 51| 42|24| 7| 18| |29.84| 0.00| 83| 70| 66|20| 10| 23| |29.98| 0.00| 82| 72| 72|06| 5| 11| |16| |29.89| 0.00| 79| 52| 40|27| 7| 17| |29.77| 0.00| 86| 67| 52|22| 10| 22| |29.96| 0.00| 82| 71| 70|06| 7| 16| |19| |29.87| 0.00| 80| 53| 39|27| 6| 14| |29.79| 0.00| 87| 66| 50|29| 10| 19| |29.98| 0.00| 81| 70| 68|15| 5| 14| |22| |29.92| 0.00| 70| 57| 64|15| 4| 10| |29.85| 0.00| 78| 67| 67|00| 4| 5| |30.03| 0.00| 72| 67| 84|15| 7| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.08 | 0.16 | 0.23 | 0.31 | 0.46 | 0.68 | 0.90 | 1.15 | 1.40 | 1.64 | 1.67 | 1.70 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1904 | 1910 | 1914 | 1920 | 1930 | 1944 | 2000 | 2020 | 2040 | 2100 | 2130 | 2200 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 2019: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 19 | MAY 20 | MAY 21 | | | | | |01| |30.03| 0.00| 69| 67| 93|15| 5| 11| |29.98| 0.00| 77| 69| 77|20| 6| 16| |29.86| 0.00| 71| 69| 95|20| 5| 12| |04| |30.02| 0.00| 69| 68| 97|18| 5| 11| |29.98| 0.00| 72| 67| 85|20| 6| 14| |29.87| 0.00| 70| 70| 98|22| 5| 12| |07| |30.04| 0.00| 70| 70| 99|18| 4| 10| |29.98| 0.00| 71| 68| 91|22| 7| 17| |29.92| 0.00| 69| 68| 97|29| 4| 13| |10| |30.05| 0.00| 82| 77| 85|18| 6| 16| |29.97| 0.00| 83| 72| 71|22| 7| 20| |29.97| 0.00| 74| 60| 62|04| 12| 21| |13| |30.01| 0.00| 90| 75| 62|18| 7| 17| |29.92| 0.00| 88| 74| 63|22| 10| 20| |29.99| 0.00| 74| 61| 62|33| 10| 18| |16| |29.97| 0.00| 93| 72| 50|22| 10| 19| |29.85| 0.00| 91| 71| 53|20| 10| 23| |29.95| 0.00| 76| 61| 60|33| 7| 18| |19| |29.94| 0.00| 92| 69| 47|20| 7| 20| |29.82| 0.00| 89| 68| 50|20| 7| 21| |30.01| 0.00| 72| 57| 60|04| 11| 21| |22| |29.97| 0.00| 82| 70| 67|18| 6| 26| |29.85| 0.00| 82| 67| 62|22| 5| 13| |30.08| 0.00| 68| 56| 65|04| 7| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 22 | MAY 23 | MAY 24 | | | | | |01| |30.10| 0.00| 66| 53| 64|04| 5| 10| |30.25| 0.00| 61| 54| 77|18| 0| 5| |30.00| 0.00| 76| 71| 85|20| 7| 20| |04| |30.13| 0.00| 60| 54| 81|06| 0| 4| |30.23| 0.00| 59| 54| 83|18| 0| 5| |29.96| 0.00| 76| 71| 86|20| 4| 18| |07| |30.18| 0.00| 65| 53| 67|04| 6| 20| |30.24| 0.00| 61| 58| 88|15| 4| 11| |29.97| 0.00| 75| 72| 92|22| 5| 13| |10| |30.22| 0.00| 71| 52| 51|04| 11| 20| |30.23| 0.00| 79| 66| 64|20| 7| 16| |29.98| 0.00| 86| 74| 69|29| 10| 19| |13| |30.25| 0.00| 72| 51| 47|06| 10| 20| |30.16| 0.00| 85| 71| 62|22| 10| 23| |29.98| 0.00| 85| 72| 65|04| 12| 21| |16| |30.24| 0.00| 73| 51| 45|06| 7| 17| |30.09| 0.00| 85| 75| 73|20| 10| 22| |29.97| 0.00| 85| 70| 60|04| 11| 18| |19| |30.24| 0.00| 73| 55| 52|13| 5| 13| |30.03| 0.00| 86| 73| 65|22| 10| 22| |30.01| 0.00| 83| 65| 54|06| 10| 16| |22| |30.26| 0.00| 65| 54| 67|15| 6| 13| |30.03| 0.00| 78| 72| 80|22| 6| 14| |30.07| 0.00| 78| 60| 53|04| 6| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 25 | MAY 26 | MAY 27 | | | | | |01| |30.07| 0.00| 73| 61| 65|09| 0| 5| |30.05| 0.00| 75| 70| 85|20| 6| 19| |29.89| 0.00| 78| 73| 85|15| 4| 7| |04| |30.08| 0.00| 68| 62| 80|09| 0| 6| |30.03| 0.00| 74| 70| 87|20| 7| 18| |29.89| 0.00| 77| 70| 80|33| 10| 20| |07| |30.15| 0.00| 68| 62| 80|06| 4| 14| |30.03| 0.00| 74| 72| 92|22| 6| 17| |29.91| 0.00| 75| 72| 90|00| 4| 6| |10| |30.17| 0.00| 82| 68| 62|15| 6| 14| |30.03| 0.00| 85| 77| 78|27| 7| 18| |29.93| 0.00| 81| 72| 75|29| 7| 18| |13| |30.16| 0.00| 84| 66| 56|15| 6| 15| |30.00| 0.00| 90| 72| 55|33| 6| 16| |29.92| 0.00| 83| 70| 65|06| 11| 18| |16| |30.10| 0.00| 87| 71| 60|15| 11| 19| |29.94| 0.00| 93| 72| 51|18| 5| 12| |29.89| 0.00| 84| 69| 62|04| 11| 18| |19| |30.07| 0.00| 85| 70| 60|15| 11| 21| |29.91| 0.00| 94| 76| 55|15| 7| 16| |29.90| 0.00| 82| 68| 63|04| 6| 14| |22| |30.09| 0.00| 76| 69| 79|15| 7| 16| |29.92| 0.00| 83| 75| 75|15| 4| 11| |29.93| 0.00| 78| 70| 77|15| 5| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 28 | MAY 29 | MAY 30 | | | | | |01| |29.91| 0.00| 73| 70| 88|15| 5| 11| |29.76| 0.00| 80| 72| 78|20| 5| 13| |29.80| 0.00| 81| 65| 59|27| 6| 16| |04| |29.89| 0.00| 71| 68| 91|15| 5| 11| |29.74| 0.00| 76| 69| 81|22| 5| 13| |29.80| 0.00| 77| 66| 67|27| 6| 13| |07| |29.91| 0.00| 70| 69| 95|15| 4| 7| |29.79| 0.00| 75| 69| 82|22| 4| 6| |29.83| 0.00| 74| 67| 80|22| 4| 6| |10| |29.89| 0.00| 84| 73| 69|18| 7| 18| |29.79| 0.00| 90| 74| 59|27| 5| 14| |29.85| 0.00| 88| 72| 59|22| 6| 16| |13| |29.83| 0.00| 90| 75| 63|20| 7| 18| |29.77| 0.00| 94| 70| 46|27| 7| 19| |29.80| 0.00| 94| 72| 49|22| 7| 18| |16| |29.77| 0.00| 95| 72| 47|22| 7| 23| |29.72| 0.00| 97| 69| 40|27| 10| 22| |29.73| 0.00| 98| 70| 40|22| 10| 21| |19| |29.73| 0.00| 95| 72| 48|22| 6| 17| |29.70| 0.00| 97| 70| 41|27| 6| 16| |29.71| 0.00| 96| 69| 42|24| 6| 22| |22| |29.77| 0.00| 86| 71| 62|20| 4| 7| |29.77| 0.00| 87| 70| 56|27| 6| 28| |29.76| 0.00| 87| 68| 53|02| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 31 | | | | | | | |01| |29.83| 0.13| 72| 69| 90|33| 11| 31| | | |04| |29.77| 0.04| 70| 69| 97|27| 4| 7| | | |07| |29.81| 0.01| 70| 70|100|22| 4| 6| | | |10| |29.82| 0.00| 76| 74| 95|33| 5| 11| | | |13| |29.83| 0.01| 78| 72| 84|31| 5| 13| | | |16| |29.76| 0.00| 84| 72| 68|06| 5| 14| | | |19| |29.75| 0.00| 81| 69| 68|15| 6| 15| | | |22| |29.75| 0.00| 75| 70| 87|13| 5| 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| |29.975| 69| 64| 84| 5.1| 21 | 1.9| |04| |29.956| 66| 63| 88| 4.8| 22 | 2.1| |07| |29.983| 66| 63| 91| 4.4| 22 | 1.8| |10| |29.995| 76| 67| 76| 6.8| 24 | 2.8| |13| |29.967| 80| 67| 65| 8.0| 21 | 2.4| |16| |29.922| 83| 66| 60| 8.7| 21 | 2.6| |19| |29.916| 82| 65| 60| 7.5| 19 | 3.3| |22| |29.953| 74| 65| 74| 5.6| 16 | 2.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 2019: 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| | | | | | | | | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | |0.05|0.02|0.11| | |0.01| |0.02|0.48| |0.55|0.01| | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06|0.01| | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | |0.08|0.01|0.89|0.74|0.06|0.01| |11 12| | | | | | | | |0.08|0.01| | | | | |0.21| | | | | | | | |12 13| | | | |0.01| | | | |0.01| | | | | | | | | | | | | | |13 14| | | | | | | | | | |0.04| | | | |0.05| | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18|0.40|0.18| | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | |0.03|0.03|20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31|0.13|0.22|0.08|0.04| | |0.01| | | | | |0.01| | | | | | | | | |0.07|0.10|31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.54|0.40|0.08|0.04|0.01|0.00|0.01|0.05|0.10|0.13|0.04|0.00|0.02|0.00|0.02|0.74|0.00|0.63|0.02|0.89|0.74|0.06|0.11|0.13|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.)