LOCAL CLIMATOLOGICAL DATA Monthly Summary
May 2009
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| 83.1 | 60.0 | 71.6 | 72.2 | 65| 80| 0| 7|.......8.| 0| 0.00| 0.0| 30.19| 29.94|30.064| 7.8| 7.6|183| 26|SSW| 0| 0| | |02| 84.1 | 65.1 | 74.6 | 73.8 | 67| 80| 0| 10|.........| 0| 0.00| 0.0| 29.96| 29.83|29.905| 5.4| 4.1|183| 22| S| 0| 0| | |03| 86.1 | 65.9 | 76.0 | 72.6 | 68| 87| 0| 11|1........| 0| 0.17| 0.0| 29.94| 29.83|29.896| 3.2| 1.3|169| 22| S| 0| 0| | |04| 84.0 | 63.2 | 73.6 | 71.3 | 68| 89| 0| 9|1.3.5..8.| 0| 0.58| 0.0| 30.00| 29.84|29.911| 4.0| 2.3|160| 28|SSW| 0| 0| | |05| 68.4 | 58.5 | 63.5 | 62.1 | 62| 98| 1| 0|1.3......| 0| 0.32| 0.0| 30.10| 29.96|30.023| 2.3| 1.3| 53| 20|SSE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 80.4 | 61.8 | 71.1 | 68.6 | 67| 96| 0| 6|1.3......| 0| 1.52| 0.0| 30.08| 29.91|29.998| 2.5| 1.6|174| 25| S| 0| 0| | |07| 81.1 | 63.6 | 72.3 | 71.1 | 68| 92| 0| 8|.........| 0| 0.31| 0.0| 29.92| 29.78|29.857| 5.7| 5.6|175| 23| S| 0| 0| | |08| 81.5 | 59.9 | 70.7 | 71.0 | 67| 87| 0| 6|1........| 0| 0.02| 0.0| 29.89| 29.81|29.848| 2.4| 2.0|186| 16| S| 0| 0| | |09| 88.7 | 68.5 | 78.6 | 78.0 | 72| 83| 0| 14|1.3....8.| 0| 0.64| 0.0| 29.82| 29.68|29.766| 6.2| 5.8|194| 29|WSW| 0| 0| | |10| 80.3 | 63.0 | 71.7 | 72.2 | 58| 64| 0| 7|.........| 0| 0.00| 0.0| 30.05| 29.79|29.956| 4.8| 2.6|295| 19|WSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 65.6 | 49.6 | 57.6 | 58.7 | 50| 74| 7| 0|1........| 0| 0.03| 0.0| 30.13| 30.03|30.091| 5.2| 5.2| 45| 26| NE| 0| 0| | |12| 71.3 | 47.0 | 59.2 | 59.7 | 52| 77| 6| 0|.........| 0| 0.00| 0.0| 30.29| 30.10|30.171| 3.6| 2.0|354| 22| N| 0| 0| | |13| 74.4 | 50.1 | 62.3 | 62.8 | 53| 71| 3| 0|1......8.| 0| 0.00| 0.0| 30.38| 30.29|30.331| 2.0| 1.4|129| 17| SE| 0| 0| | |14| 81.2 | 57.5 | 69.3 | 69.0 | 63| 82| 0| 5|.........| 0| 0.00| 0.0| 30.32| 30.18|30.254| 4.6| 4.5|152| 23|SSE| 0| 0| | |15| 84.8 | 65.6 | 75.2 | 73.2 | 69| 87| 0| 11|.........| 0| T | 0.0| 30.23| 30.16|30.195| 2.4| 2.3|157| 18| SE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 81.4 | 66.6 | 74.0 | 71.9 | 70| 94| 0| 9|1........| 0| 0.23| 0.0| 30.15| 29.96|30.069| 3.9| 3.8|166| 20| S| 0| 0| | |17| 71.3 | 54.6 | 63.0 | 62.9 | 61| 95| 2| 0|1........| 0| 0.91| 0.0| 30.13| 29.92|30.003| 7.2| 4.0| 34| 27| N| 0| 0| | |18| 60.2 | 51.8 | 56.0*| 55.6 | 45| 68| 9| 0|.........| 0| 0.02| 0.0| 30.32| 30.11|30.215|10.0|10.0| 45| 30| NE| 0| 0| | |19| 62.6 | 51.0 | 56.8 | 56.8 | 45| 64| 8| 0|.........| 0| 0.00| 0.0| 30.43| 30.32|30.385| 8.0| 8.0| 45| 29| NE| 0| 0| | |20| 71.1 | 45.6*| 58.3 | 59.5 | 49| 71| 6| 0|.........| 0| 0.00| 0.0| 30.41| 30.35|30.385| 3.7| 3.7| 45| 19| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 80.3 | 49.7 | 65.0 | 65.8 | 59| 80| 0| 0|.........| 0| 0.00| 0.0| 30.36| 30.23|30.300| 2.1| 1.3|127| 16|SSE| 0| 0| | |22| 86.4 | 57.6 | 72.0 | 71.9 | 65| 79| 0| 7|.........| 0| 0.00| 0.0| 30.23| 30.13|30.185| 2.4| 2.4|163| 16|SSE| 0| 0| | |23| 88.3 | 63.7 | 76.0 | 75.0 | 68| 80| 0| 11|.........| 0| 0.00| 0.0| 30.18| 30.08|30.135| 3.0| 3.0|161| 18|SSE| 0| 0| | |24| 85.5 | 65.3 | 75.4 | 73.6 | 69| 87| 0| 11|.........| 0| 0.04| 0.0| 30.12| 30.01|30.070| 3.0| 2.8|157| 18|SSE| 0| 0| | |25| 85.9 | 68.0 | 76.9 | 75.0 | 70| 87| 0| 12|.........| 0| 0.05| 0.0| 30.04| 29.95|29.999| 2.8| 2.6|163| 15| SE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 83.0 | 66.6 | 74.8 | 73.3 | 69| 88| 0| 10|.........| 0| 0.04| 0.0| 30.06| 30.00|30.018| 2.1| 2.0|148| 16| SE| 0| 0| | |27| 78.7 | 66.7 | 72.7 | 72.1 | 68| 87| 0| 8|.........| 0| 0.00| 0.0| 30.01| 29.83|29.911| 5.6| 5.6| 46| 19| NE| 0| 0| | |28| 85.6 | 67.8 | 76.7 | 75.2 | 71| 87| 0| 12|1......8.| 0| 0.03| 0.0| 29.85| 29.75|29.803| 2.1| 1.3|172| 18|SSE| 0| 0| | |29| 90.3*| 67.5 | 78.9*| 79.3 | 73| 82| 0| 14|..3.5....| 0| 0.74| 0.0| 29.77| 29.65|29.720| 3.8| 3.7|165| 23| S| 0| 0| | |30| 85.3 | 65.1 | 75.2 | 74.7 | 64| 71| 0| 10|.........| 0| 0.00| 0.0| 29.84| 29.75|29.793| 3.9| 2.0| 4| 18| N| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 87.2 | 66.3 | 76.8 | 76.4 | 68| 76| 0| 12|.......8.| 0| T | 0.0| 29.92| 29.77|29.817| 3.4| 2.2|231| 20|WSW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2478.1|1873.2|------|------|---|----| 42| 210| Days | 5.65| 0.0| 30.43| 29.65|30.035| 4.2| 1.4|130| 30| NE| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+1.54" OR 138% OF NORMAL +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 79.9| 60.5| 70.2 | 69.5 | 63|82.0|----|----|>.01 Inch 16|16.65| 0.7| 19 | 29 |------|----|----|---| 18 | 1+ | | | +2.7 +2.9 +2.8 +------+---+----+----+----+------------|-1.68" OR 91% 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 |3369| 275|Thunder 5|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 1.61| 5- 6| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 1 | 0 | 0 | 0 |----|----| Clear 5 Partly Cloudy 21 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:
    FROPA: 4th, 11th, 17th, 31st

STATION RECORDS:
3rd - TEMPERATURE TIED - Maximum Minimum 66 [previous 1983]
9th - TEMPERATURE - Maximum Minimum 68 [previous 66 in 2000]
9th - TEMPERATURE - Maximum 89 [previous 88 in 2000]
17th - RAINFALL - 0.91" [previous 0.90" in 1988]
20th - TEMPERATURE - TIED - Minimum 46 [previous 2002]
20th - TEMPERATURE - TIED Minimum 46 [previously 2002] MONTHLY AVERAGE MAXIMUM TEMP OF 79.9 WAS 2.7 ABOVE NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 60.5 WAS 2.9 ABOVE NORMAL. MONTHLY AVERAGE TEMP OF 70.2 WAS 2.8 ABOVE NORMAL. MAXIMUM TEMP: 90 ON THE 29TH MINIMUM TEMP: 46 ON THE 20TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 1 MAXIMUM <= 32: 0 MINIMUM <= 32: 0 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 43.5 COOLING DEGREE DAYS: 204.0 DAYS WITH HEATING DEGREE DAYS: 8 DAYS WITH COOLING DEGREE DAYS: 22 PRECIP TOTAL OF 5.65" WAS 1.54" ABOVE NORMAL (138% OF NORMAL). GREATEST DAILY RAINFALL: 1.52" ON THE 6TH GREATEST 24-HOUR RAINFALL: 1.61" ON THE 5-6TH DAYS WITH MEASUREABLE PRECIP: 16 OR 51.61% AVERAGE DAILY PRECIP: 0.18" NORMAL DAILY PRECIP: 0.13" DAYS WITH PRECIP >= 0.01" 16 DAYS WITH PRECIP >= 0.10" 9 DAYS WITH PRECIP >= 0.50" 5 DAYS WITH PRECIP >= 1.00" 1 DAYS WITH THUNDERSTORMS: 5 NUMBER OF THUNDERSTORMS: 5 DAYS WITH SNOW: 00 SNOWFALL TOTAL: 0.0" CLOUDY DAYS: 5 PARTLY CLOUDY DAYS: 21 SUNNY/CLEAR DAYS: 5 DAYS WITH F/GF: 11 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 0 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 61.5 WAS 0.2 BELOW NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 42.8 WAS 0.3 ABOVE NORMAL. YEARLY AVERAGE TEMP OF 52.2 WAS 0.1 ABOVE NORMAL. MAXIMUM TEMP: 93 ON APRIL 26TH MINIMUM TEMP: 16 ON JANUARY 13TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 4 MAXIMUM <= 32: 4 MINIMUM <= 32: 41 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 2201.0 COOLING DEGREE DAYS: 264.5 DAYS WITH HEATING DEGREE DAYS:116 DAYS WITH COOLING DEGREE DAYS: 33 PRECIP TOTAL OF 16.65" WAS 1.67" BELOW NORMAL ( 91% OF NORMAL). GREATEST DAILY RAINFALL: 1.52" ON MAY 6TH GREATEST 24-HOUR RAINFALL: 1.61" ON MAY 5-6TH DAYS WITH MEASUREABLE PRECIP: 53 OF 151 OR 35.10% AVERAGE DAILY PRECIP: 0.11" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 53 DAYS WITH PRECIP >= 0.10" 36 DAYS WITH PRECIP >= 0.50" 11 DAYS WITH PRECIP >= 1.00" 1 DAYS WITH THUNDERSTORMS: 6 NUMBER OF THUNDERSTORMS: 6 DAYS WITH SNOW: 06 SNOWFALL TOTAL: 0.7" CLOUDY DAYS: 30 PARTLY CLOUDY DAYS: 67 SUNNY/CLEAR DAYS: 54 DAYS WITH F/GF: 46 DAYS WITH DENSE FOG: 2 DAYS WITH FROST: 22
OBSERVATIONS AT 3-HOUR INTERVALS
May 2009: 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| |30.19| 0.00| 61| 60| 96|13| 4| 12| |29.96| 0.00| 69| 65| 87|18| 5| 14| |29.90| 0.00| 67| 64| 89|15| 0| 7| |04| |30.15| 0.00| 64| 64| 98|18| 6| 14| |29.92| 0.00| 66| 63| 90|18| 6| 16| |29.90| 0.00| 68| 66| 94|18| 0| 4| |07| |30.15| 0.00| 65| 64| 97|18| 4| 11| |29.93| 0.00| 65| 63| 92|18| 5| 14| |29.93| 0.00| 67| 65| 95|18| 0| 6| |10| |30.13| 0.00| 71| 67| 86|18| 10| 19| |29.92| 0.00| 76| 68| 77|20| 7| 19| |29.94| 0.00| 76| 70| 82|18| 6| 15| |13| |30.05| 0.00| 79| 68| 70|20| 11| 24| |29.88| 0.00| 81| 71| 71|15| 6| 21| |29.87| 0.00| 84| 73| 69|18| 6| 19| |16| |29.97| 0.00| 83| 68| 60|20| 11| 26| |29.86| 0.00| 83| 69| 63|24| 6| 22| |29.83| 0.00| 80| 75| 83|24| 4| 14| |19| |29.94| 0.00| 79| 65| 61|18| 10| 22| |29.86| 0.00| 80| 68| 67|18| 5| 16| |29.88| 0.00| 72| 69| 89|02| 4| 10| |22| |29.98| 0.00| 72| 64| 77|18| 5| 16| |29.91| 0.00| 69| 65| 87|04| 4| 11| |29.92| 0.00| 67| 65| 95|04| 0| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 4 | MAY 5 | MAY 6 | | | | | |01| |29.91| 0.00| 65| 64| 97|04| 0| 6| |30.01| 0.17| 63| 62| 98|04| 4| 11| |30.00| 0.38| 66| 66| 99|18| 4| 18| |04| |29.91| 0.00| 65| 63| 94|20| 0| 7| |30.00| 0.01| 60| 60| 98|02| 0| 10| |30.00| 0.03| 67| 67|100|27| 4| 11| |07| |29.92| 0.00| 64| 63| 96|15| 0| 6| |30.05| 0.00| 59| 58| 98|04| 0| 10| |30.05| 0.00| 62| 62| 99|00| 0| 6| |10| |29.92| 0.00| 75| 71| 89|18| 5| 18| |30.08| 0.00| 59| 58| 98|04| 5| 14| |30.08| 0.00| 65| 65| 99|04| 0| 6| |13| |29.88| 0.00| 83| 73| 72|15| 7| 21| |30.07| 0.00| 60| 59| 98|04| 4| 12| |30.04| 0.00| 74| 72| 94|06| 0| 6| |16| |29.84| 0.00| 82| 73| 74|18| 6| 21| |30.02| 0.00| 64| 63| 97|15| 0| 7| |29.94| 0.00| 80| 74| 82|15| 6| 16| |19| |29.90| 0.00| 70| 66| 87|04| 7| 17| |29.98| 0.00| 65| 65| 98|15| 0| 6| |29.95| 0.34| 67| 66| 97|22| 4| 15| |22| |29.98| 0.00| 65| 64| 97|04| 4| 16| |29.96| 0.00| 68| 68|100|15| 5| 20| |29.94| 0.00| 68| 67| 99|15| 5| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 7 | MAY 8 | MAY 9 | | | | | |01| |29.92| 0.00| 67| 67| 99|15| 6| 18| |29.86| 0.02| 63| 63| 98|18| 0| 6| |29.80| 0.00| 71| 69| 94|18| 4| 12| |04| |29.88| 0.00| 68| 68| 98|18| 7| 19| |29.84| 0.00| 62| 61| 99|15| 0| 6| |29.79| 0.57| 69| 68| 98|24| 5| 28| |07| |29.90| 0.00| 69| 68| 97|18| 6| 19| |29.86| 0.00| 61| 60| 99|02| 0| 6| |29.81| 0.00| 70| 70|100|18| 5| 14| |10| |29.92| 0.14| 68| 67| 98|18| 6| 20| |29.89| 0.00| 73| 69| 88|24| 4| 10| |29.82| 0.00| 77| 74| 93|20| 6| 15| |13| |29.85| 0.00| 74| 72| 93|20| 7| 17| |29.86| 0.00| 78| 72| 82|15| 5| 13| |29.77| 0.00| 85| 77| 76|20| 10| 20| |16| |29.79| 0.00| 81| 71| 72|15| 7| 18| |29.84| 0.00| 81| 73| 76|18| 4| 14| |29.71| 0.00| 89| 76| 67|18| 7| 20| |19| |29.80| 0.00| 76| 71| 82|18| 5| 16| |29.81| 0.00| 77| 69| 75|13| 4| 10| |29.70| 0.00| 84| 72| 68|18| 5| 16| |22| |29.83| 0.01| 65| 63| 95|18| 4| 12| |29.83| 0.00| 73| 69| 87|20| 4| 10| |29.76| 0.00| 80| 68| 65|24| 7| 29| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 10 | MAY 11 | MAY 12 | | | | | |01| |29.79| 0.00| 73| 65| 77|24| 6| 19| |30.03| 0.00| 62| 59| 90|04| 0| 5| |30.12| 0.00| 49| 48| 96|00| 0| 0| |04| |29.85| 0.00| 69| 64| 85|24| 4| 15| |30.06| 0.00| 64| 51| 63|04| 12| 24| |30.11| 0.00| 48| 47| 96|00| 0| 0| |07| |29.96| 0.00| 66| 54| 64|00| 5| 15| |30.09| 0.00| 62| 47| 59|04| 7| 19| |30.15| 0.00| 49| 48| 98|24| 0| 7| |10| |30.01| 0.00| 70| 54| 57|00| 10| 18| |30.12| 0.00| 61| 47| 60|04| 6| 19| |30.18| 0.00| 62| 56| 80|24| 5| 15| |13| |30.00| 0.00| 75| 57| 53|27| 4| 11| |30.10| 0.01| 59| 48| 69|04| 6| 18| |30.19| 0.00| 69| 55| 61|00| 6| 16| |16| |29.96| 0.00| 79| 58| 48|24| 6| 18| |30.09| 0.00| 58| 49| 72|04| 6| 16| |30.17| 0.00| 71| 54| 54|00| 10| 22| |19| |29.98| 0.00| 76| 57| 51|24| 5| 17| |30.08| 0.01| 53| 50| 90|09| 0| 6| |30.19| 0.00| 67| 52| 59|04| 7| 18| |22| |30.04| 0.00| 67| 60| 80|04| 0| 4| |30.12| 0.00| 52| 50| 94|00| 0| 0| |30.25| 0.00| 60| 55| 81|15| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 13 | MAY 14 | MAY 15 | | | | | |01| |30.29| 0.00| 55| 52| 89|00| 0| 0| |30.32| 0.00| 58| 55| 89|00| 0| 0| |30.20| 0.00| 69| 66| 91|13| 5| 18| |04| |30.29| 0.00| 52| 50| 93|00| 0| 0| |30.26| 0.00| 58| 57| 95|15| 0| 10| |30.20| 0.00| 68| 66| 93|18| 0| 6| |07| |30.34| 0.00| 51| 50| 96|00| 0| 0| |30.28| 0.00| 59| 58| 95|13| 0| 11| |30.22| 0.00| 66| 65| 97|18| 0| 6| |10| |30.37| 0.00| 69| 54| 59|04| 4| 11| |30.32| 0.00| 74| 64| 73|13| 6| 17| |30.23| 0.00| 78| 72| 82|13| 5| 12| |13| |30.35| 0.00| 74| 55| 51|15| 4| 14| |30.28| 0.00| 78| 68| 71|13| 7| 21| |30.20| 0.00| 85| 75| 72|18| 4| 14| |16| |30.34| 0.00| 73| 53| 50|15| 4| 13| |30.19| 0.00| 80| 69| 67|15| 7| 23| |30.18| 0.00| 77| 71| 83|15| 0| 7| |19| |30.33| 0.00| 67| 51| 56|15| 4| 14| |30.18| 0.00| 75| 67| 76|15| 7| 19| |30.16| 0.00| 75| 71| 87|15| 0| 7| |22| |30.33| 0.00| 60| 54| 79|15| 0| 6| |30.21| 0.00| 69| 65| 87|13| 5| 14| |30.16| 0.00| 71| 68| 92|15| 5| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 16 | MAY 17 | MAY 18 | | | | | |01| |30.15| 0.00| 67| 66| 95|15| 0| 10| |29.98| 0.00| 69| 68| 97|15| 5| 15| |30.13| 0.00| 54| 47| 75|04| 10| 20| |04| |30.11| 0.00| 67| 66| 98|15| 4| 12| |29.92| 0.00| 68| 67| 98|15| 4| 10| |30.11| 0.00| 54| 49| 84|04| 4| 12| |07| |30.14| 0.00| 68| 67| 98|15| 4| 12| |29.94| 0.00| 69| 68| 99|18| 4| 7| |30.17| 0.00| 53| 44| 71|04| 14| 30| |10| |30.13| 0.00| 72| 71| 96|18| 4| 12| |29.95| 0.00| 71| 69| 95|15| 4| 12| |30.24| 0.00| 53| 47| 79|04| 12| 23| |13| |30.08| 0.00| 80| 74| 83|18| 6| 13| |30.02| 0.08| 59| 58| 97|00| 11| 24| |30.24| 0.00| 59| 45| 59|04| 13| 28| |16| |30.01| 0.00| 79| 74| 84|13| 4| 15| |30.02| 0.17| 59| 59| 99|00| 7| 18| |30.24| 0.00| 59| 41| 51|04| 12| 25| |19| |29.97| 0.00| 74| 71| 93|18| 5| 16| |30.06| 0.00| 55| 53| 90|04| 10| 22| |30.26| 0.00| 58| 41| 53|04| 12| 24| |22| |29.98| 0.00| 70| 69| 96|18| 4| 12| |30.11| 0.00| 56| 50| 81|02| 10| 18| |30.32| 0.00| 54| 45| 71|04| 5| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.07 | 0.13 | 0.19 | 0.26 | 0.38 | 0.57 | 0.74 | 0.74 | 0.74 | 0.74 | 0.74 | 0.74 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 2204 | 2209 | 2214 | 2220 | 2229 | 2244 | 2258 | 2258 | 2258 | 2258 | 2258 | 2258 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 2009: 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| |30.32| 0.00| 53| 45| 76|04| 0| 11| |30.40| 0.00| 49| 45| 86|04| 0| 5| |30.33| 0.00| 53| 51| 92|00| 0| 0| |04| |30.32| 0.00| 52| 44| 73|04| 4| 14| |30.38| 0.00| 48| 46| 92|04| 0| 5| |30.31| 0.00| 51| 49| 94|00| 0| 0| |07| |30.36| 0.00| 54| 43| 66|04| 10| 19| |30.41| 0.00| 48| 47| 97|06| 0| 7| |30.34| 0.00| 51| 51| 97|00| 0| 0| |10| |30.42| 0.00| 59| 43| 56|04| 13| 25| |30.40| 0.00| 65| 53| 65|04| 10| 17| |30.35| 0.00| 72| 63| 74|04| 4| 11| |13| |30.43| 0.00| 61| 46| 57|04| 13| 29| |30.41| 0.00| 69| 53| 56|04| 10| 19| |30.32| 0.00| 77| 64| 65|15| 4| 14| |16| |30.40| 0.00| 62| 46| 54|04| 11| 23| |30.38| 0.00| 71| 50| 47|04| 7| 17| |30.27| 0.00| 80| 66| 62|15| 4| 15| |19| |30.39| 0.00| 60| 44| 57|04| 10| 18| |30.36| 0.00| 66| 50| 56|04| 4| 15| |30.24| 0.00| 73| 63| 71|13| 4| 15| |22| |30.42| 0.00| 53| 44| 72|04| 0| 7| |30.35| 0.00| 57| 53| 85|00| 0| 0| |30.25| 0.00| 65| 61| 87|15| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 22 | MAY 23 | MAY 24 | | | | | |01| |30.23| 0.00| 61| 59| 93|15| 0| 4| |30.16| 0.00| 67| 65| 92|18| 0| 10| |30.12| 0.00| 69| 67| 91|15| 4| 12| |04| |30.21| 0.00| 59| 58| 96|15| 0| 4| |30.15| 0.00| 65| 64| 95|15| 0| 7| |30.09| 0.00| 66| 65| 95|15| 0| 5| |07| |30.21| 0.00| 59| 58| 98|15| 0| 4| |30.16| 0.00| 65| 64| 98|18| 0| 5| |30.10| 0.00| 66| 66| 98|15| 0| 7| |10| |30.21| 0.00| 76| 68| 77|18| 4| 7| |30.18| 0.00| 77| 70| 78|18| 5| 15| |30.11| 0.00| 77| 72| 85|15| 4| 12| |13| |30.18| 0.00| 84| 68| 60|15| 4| 15| |30.15| 0.00| 84| 71| 64|15| 4| 11| |30.07| 0.00| 85| 73| 67|18| 4| 12| |16| |30.14| 0.00| 84| 69| 60|18| 4| 12| |30.10| 0.00| 88| 73| 60|15| 5| 18| |30.04| 0.00| 80| 74| 81|13| 5| 15| |19| |30.14| 0.00| 80| 70| 72|15| 5| 15| |30.08| 0.00| 81| 69| 69|15| 5| 17| |30.01| 0.00| 75| 70| 83|15| 5| 17| |22| |30.16| 0.00| 71| 66| 84|15| 4| 12| |30.11| 0.00| 73| 68| 84|15| 4| 14| |30.02| 0.00| 71| 69| 94|15| 4| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 25 | MAY 26 | MAY 27 | | | | | |01| |30.04| 0.00| 70| 68| 94|18| 4| 10| |30.01| 0.00| 70| 68| 94|13| 0| 10| |30.01| 0.00| 67| 66| 96|13| 0| 6| |04| |30.01| 0.00| 68| 67| 96|15| 0| 5| |30.00| 0.00| 68| 67| 97|15| 0| 6| |29.95| 0.00| 67| 66| 95|06| 4| 7| |07| |30.02| 0.00| 69| 68| 98|15| 0| 7| |30.02| 0.00| 68| 67| 99|15| 0| 5| |29.96| 0.00| 67| 66| 96|04| 0| 7| |10| |30.03| 0.00| 76| 73| 88|18| 4| 11| |30.05| 0.00| 78| 74| 87|15| 4| 12| |29.95| 0.00| 75| 69| 83|04| 7| 15| |13| |30.01| 0.00| 85| 74| 70|18| 4| 10| |30.04| 0.03| 78| 72| 83|13| 4| 14| |29.92| 0.00| 79| 71| 76|04| 10| 19| |16| |29.96| 0.04| 81| 75| 84|15| 4| 12| |30.01| 0.00| 79| 72| 78|13| 4| 12| |29.87| 0.00| 77| 70| 79|04| 10| 18| |19| |29.96| 0.00| 77| 72| 83|13| 4| 15| |30.00| 0.00| 75| 70| 83|15| 4| 14| |29.83| 0.00| 75| 68| 79|04| 7| 17| |22| |29.99| 0.00| 73| 70| 90|13| 0| 7| |30.03| 0.00| 68| 66| 92|18| 0| 7| |29.84| 0.00| 70| 68| 93|04| 5| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 28 | MAY 29 | MAY 30 | | | | | |01| |29.82| 0.00| 70| 68| 94|00| 0| 0| |29.75| 0.00| 72| 71| 97|18| 0| 11| |29.76| 0.00| 69| 68| 97|04| 0| 10| |04| |29.81| 0.00| 69| 68| 95|24| 0| 10| |29.73| 0.00| 71| 71| 98|15| 4| 11| |29.75| 0.00| 67| 63| 86|00| 6| 18| |07| |29.84| 0.00| 68| 67| 97|24| 0| 6| |29.74| 0.00| 71| 70| 99|18| 4| 11| |29.79| 0.00| 66| 61| 84|00| 5| 14| |10| |29.85| 0.00| 80| 73| 79|22| 0| 6| |29.76| 0.00| 80| 74| 82|15| 5| 15| |29.83| 0.00| 76| 63| 64|04| 5| 13| |13| |29.82| 0.00| 84| 74| 71|18| 0| 10| |29.73| 0.00| 87| 77| 72|15| 5| 16| |29.82| 0.00| 79| 59| 50|00| 5| 12| |16| |29.78| 0.00| 81| 74| 80|15| 5| 15| |29.68| 0.00| 90| 78| 68|15| 6| 15| |29.78| 0.00| 84| 63| 50|02| 5| 15| |19| |29.75| 0.00| 77| 73| 87|15| 4| 12| |29.65| 0.00| 86| 72| 63|15| 5| 16| |29.79| 0.00| 81| 65| 58|18| 4| 7| |22| |29.77| 0.00| 74| 71| 92|15| 4| 14| |29.72| 0.00| 79| 71| 77|15| 0| 7| |29.83| 0.00| 72| 67| 83|15| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 31 | | | | | | | |01| |29.83| 0.00| 69| 67| 93|15| 4| 12| | | |04| |29.80| 0.00| 68| 67| 97|18| 0| 7| | | |07| |29.81| 0.00| 67| 67| 98|18| 4| 7| | | |10| |29.82| 0.00| 77| 68| 74|24| 5| 19| | | |13| |29.79| 0.00| 83| 69| 61|24| 6| 20| | | |16| |29.77| 0.00| 87| 69| 55|24| 6| 18| | | |19| |29.81| 0.00| 83| 67| 59|00| 4| 12| | | |22| |29.89| 0.00| 76| 68| 76|33| 0| 4| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |30.030| 64| 62| 92| 2.2| 15 | 1.4| |04| |30.013| 63| 61| 93| 2.2| 14 | 0.5| |07| |30.039| 63| 61| 93| 2.6| 12 | 0.8| |10| |30.055| 72| 65| 80| 5.6| 13 | 1.4| |13| |30.031| 77| 66| 70| 6.1| 14 | 1.5| |16| |29.991| 78| 66| 68| 5.9| 15 | 1.5| |19| |29.989| 74| 64| 73| 5.1| 12 | 1.9| |22| |30.024| 68| 63| 86| 2.7| 14 | 1.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 2009: 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| | | | | | | | | | | | | | | |0.16| |0.01| | | | | | |03 04| | | | | | | | | | | | | | |0.14| | | | | |0.39| | |0.05|04 05| |0.17|0.02|0.01|0.01| | | | | | | | | |0.01| | | |0.01| |0.01|0.02| |0.06|05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| |0.38|0.44| |0.03| | | | | | | | | | | | |0.31|0.02|0.34| | | | |06 07| | | | | | | | | |0.01|0.14|0.07| | | | | | | | | |0.02|0.01|0.06|07 08| |0.02| | | | | | | | | | | | | | | | | | | | | | |08 09| | | |0.06|0.57|0.01| | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | |0.01| | | | |0.01|0.01| | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | |0.12| | |0.11| | | | | | |16 17| | | | | | | | | | | |0.13|0.09|0.08|0.15|0.11|0.17|0.11|0.06| | | | |0.01|17 18| | | | | | |0.01| | |0.01| | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | |0.04| | | | | | | | |24 25| | | | | | | | | | | | | | | | |0.04| | | |0.01| | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | |0.03|0.01| | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | |0.01| | | | | | |0.01| |0.01|28 29| | | | | | | | | | | | | | | | | | | | | | | |0.74|29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.57|0.46|0.07|0.61|0.01|0.01|0.00|0.00|0.02|0.14|0.20|0.09|0.12|0.44|0.31|0.21|0.54|0.10|0.35|0.41|0.05|0.01|0.93|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.)