LOCAL CLIMATOLOGICAL DATA Monthly Summary
April 2011
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| 49.5 | 37.0 | 43.3*| 44.4 | 40| 84| 21| 0|1........| 0| 0.02| 0.0| 29.74| 29.50|29.586| 5.9| 4.5|274| 26|WSW| 0| 0| | |02| 58.5 | 34.6*| 46.5 | 46.1 | 37| 73| 18| 0|.........| 0| 0.05| 0.0| 29.94| 29.65|29.738| 6.4| 4.4|251| 48|WSW| 0| 0| | |03| 64.5 | 36.6 | 50.5 | 49.6 | 37| 63| 14| 0|.........| 0| 0.00| 0.0| 30.16| 29.95|30.055| 5.3| 3.5|257| 23| NW| 0| 0| | |04| 85.3 | 47.3 | 66.3 | 67.3 | 56| 68| 0| 1|.........| 0| 0.00| 0.0| 30.01| 29.65|29.817| 8.9| 8.7|198| 36|SSW| 0| 0| | |05| 71.6 | 47.3 | 59.4 | 60.2 | 54| 83| 5| 0|.........| 0| 0.27| 0.0| 29.96| 29.42|29.616| 8.5| 4.4|221| 38|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 65.5 | 35.7 | 50.6 | 52.2 | 37| 57| 14| 0|.........| 0| 0.00| 0.0| 30.22| 30.00|30.096| 5.1| 3.2|229| 24| NW| 0| 0| | |07| 78.1 | 50.6 | 64.3 | 61.3 | 47| 62| 0| 0|.........| 0| 0.00| 0.0| 30.10| 29.96|30.036| 6.2| 2.9|202| 22|WSW| 0| 0| | |08| 70.1 | 49.5 | 59.8 | 55.7 | 51| 86| 5| 0|.........| 0| 0.53| 0.0| 30.16| 29.94|30.048| 6.0| 4.7| 47| 25| N| 0| 0| | |09| 54.7 | 47.9 | 51.3 | 50.9 | 48| 89| 13| 0|1........| 0| 0.03| 0.0| 30.20| 30.01|30.126| 7.0| 6.4| 38| 22| NE| 0| 0| | |10| 74.2 | 48.6 | 61.4 | 59.2 | 55| 85| 3| 0|1........| 0| 0.00| 0.0| 30.16| 30.03|30.111| 2.9| 1.9| 94| 19|SSE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 83.1 | 57.0 | 70.1 | 71.4 | 66| 83| 0| 5|.........| 0| 0.00| 0.0| 30.03| 29.74|29.879| 7.1| 7.0|199| 32|SSW| 0| 0| | |12| 84.6 | 58.8 | 71.7 | 71.4 | 63| 76| 0| 7|.........| 0| 0.01| 0.0| 29.79| 29.69|29.731| 5.6| 5.5|198| 28|SSW| 0| 0| | |13| 68.6 | 52.3 | 60.4 | 60.0 | 53| 80| 4| 0|.........| 0| 0.00| 0.0| 30.00| 29.78|29.860| 4.2| 1.1|320| 21| N| 0| 0| | |14| 65.7 | 45.5 | 55.6 | 56.6 | 46| 70| 9| 0|.........| 0| 0.00| 0.0| 30.17| 30.00|30.077| 3.1| 2.3|354| 19| NW| 0| 0| | |15| 64.8 | 43.8 | 54.3 | 55.6 | 49| 80| 10| 0|1........| 0| 0.00| 0.0| 30.29| 30.17|30.243| 3.0| 2.9| 67| 19|ENE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 74.0 | 55.5 | 64.8 | 64.3 | 60| 85| 0| 0|..3......| 0| 0.42| 0.0| 30.19| 29.55|29.866| 5.9| 5.1|163| 32|SSE| 0| 0| | |17| 68.7 | 47.9 | 58.3 | 59.2 | 45| 61| 6| 0|.........| 0| 0.00| 0.0| 29.98| 29.66|29.866| 6.2| 5.9|241| 24|WSW| 0| 0| | |18| 80.6 | 52.1 | 66.3 | 65.6 | 50| 58| 0| 2|.........| 0| 0.00| 0.0| 30.08| 29.98|30.022| 4.3| 3.8|190| 24|SSE| 0| 0| | |19| 83.2 | 57.8 | 70.5 | 70.1 | 59| 70| 0| 6|.........| 0| 0.00| 0.0| 30.08| 29.97|30.029| 5.5| 5.3|195| 24|SSW| 0| 0| | |20| 87.3 | 63.0 | 75.2 | 74.7 | 65| 73| 0| 10|.......8.| 0| 0.00| 0.0| 30.01| 29.88|29.952| 6.6| 6.5|197| 26|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 70.8 | 48.5 | 59.7 | 61.5 | 50| 67| 5| 0|.........| 0| 0.00| 0.0| 30.32| 29.96|30.160| 5.8| 5.4| 46| 25| NE| 0| 0| | |22| 61.2 | 41.5 | 51.3 | 52.3 | 46| 79| 13| 0|.........| 0| 0.01| 0.0| 30.39| 30.27|30.333| 3.0| 2.9| 50| 20|ENE| 0| 0| | |23| 83.2 | 53.2 | 68.2 | 69.2 | 64| 83| 0| 3|.........| 0| 0.00| 0.0| 30.25| 30.03|30.126| 3.6| 3.5|186| 28| S| 0| 0| | |24| 88.2*| 65.6 | 76.9*| 76.4 | 68| 77| 0| 12|.......8.| 0| 0.00| 0.0| 30.13| 29.99|30.071| 5.5| 5.3|190| 22| S| 0| 0| | |25| 88.2 | 65.1 | 76.6 | 76.3 | 68| 77| 0| 12|.......8.| 0| 0.00| 0.0| 30.10| 29.99|30.052| 4.9| 4.6|186| 22| S| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 84.5 | 65.7 | 75.1 | 71.6 | 69| 92| 0| 11|..3....8.| 0| 0.62| 0.0| 30.07| 29.98|30.017| 3.4| 3.2|172| 21|SSE| 0| 0| | |27| 84.1 | 66.8 | 75.4 | 75.0 | 71| 87| 0| 11|.........| 0| T | 0.0| 30.01| 29.90|29.955| 4.9| 4.8|158| 28|SSE| 0| 0| | |28| 83.7 | 67.9 | 75.8 | 74.7 | 70| 87| 0| 11|..3......| 0| 0.29| 0.0| 29.91| 29.73|29.796| 8.1| 7.7|177| 36|SSW| 0| 0| | |29| 73.4 | 57.8 | 65.6 | 66.5 | 54| 66| 0| 1|.........| 0| 0.00| 0.0| 30.00| 29.78|29.861| 3.9| 3.7|251| 24|WSW| 0| 0| | |30| 66.0 | 52.9 | 59.5 | 60.8 | 48| 63| 5| 0|.........| 0| 0.00| 0.0| 30.24| 30.01|30.113| 4.7| 4.3| 23| 20| N| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2215.9|1553.8|------|------|---|----| 145| 92| Days | 2.25| 0.0| 30.39| 29.42|29.975| 5.4| 2.1|202| 48|WSW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|-1.13" or 67% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 74.0| 51.8| 62.9 | 62.4 | 54|75.4|----|----|>.01 Inch 10|12.30| 19.0| 22 | 5 |------|----|----|---| 2 | 1+ | | + +4.1 +3.0 +3.5 +------+---+----+----+----+------------|-1.93" or 86% 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 |3607| 92|Thunder 3|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 0.62| 26 | 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 0 | 0 |----|----| Clear 12 Partly Cloudy 15 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. 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: 2nd, 5th, 7th, 8th, 13th,17th,21st,29th
STATION RECORDS:
1st - TEMP TIED Min Max 50 [previous 1980]
2nd - TEMP TIED Minimum 35 [prev 1980]
2nd - WIND GUST 48mph [prev 35mph 1997]
4th - TEMP TIED Maximum [prev 85 1999]
5th - WIND GUST 38mph [prev 34mph 1984]
24th - TEMP 88 [prev 87 1990]
25th - TEMP TIED Max Min 65 [prev 1985]
26th - TEMP Max Min 66 [prev 64 2009]
27th - TEMP Max Min 67 [prev 65 1990]
28th - TEMP Max Min 68 [prev 65 1985]
28th - WIND GUST 36mph [prev 33 1989] MONTHLY AVERAGE MAXIMUM TEMP OF 74.0 WAS 4.1 ABOVE NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 51.8 WAS 3.0 ABOVE NORMAL. MONTHLY AVERAGE TEMP OF 62.9 WAS 3.5 ABOVE NORMAL. MAXIMUM TEMP: 88 ON THE 24TH,25TH MINIMUM TEMP: 35 ON THE 2ND DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 0 MINIMUM <= 32: 0 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 152.5 COOLING DEGREE DAYS: 89.0 DAYS WITH HEATING DEGREE DAYS: 17 DAYS WITH COOLING DEGREE DAYS: 13 PRECIP TOTAL OF 2.25" WAS 1.13" BELOW NORMAL ( 67% OF NORMAL). GREATEST DAILY RAINFALL: 0.62" ON THE 26TH GREATEST 24-HOUR RAINFALL: 0.62" ON THE 26TH DAYS WITH MEASUREABLE PRECIP: 10 OR 33.33% AVERAGE DAILY PRECIP: 0.08" NORMAL DAILY PRECIP: 0.11" DAYS WITH PRECIP >= 0.01" 10 DAYS WITH PRECIP >= 0.10" 5 DAYS WITH PRECIP >= 0.50" 2 DAYS WITH PRECIP >= 1.00" 0 DAYS WITH THUNDERSTORMS: 3 NUMBER OF THUNDERSTORMS: 3 DAYS WITH SNOW: 0 SNOWFALL TOTAL: 0.0" SEASONAL SNOWFALL 2010-2011: 19.0" CLOUDY DAYS: 3 PARTLY CLOUDY DAYS: 15 SUNNY/CLEAR DAYS: 12 DAYS WITH F/GF: 4 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 0 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 57.7 WAS 0.1 ABOVE NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 38.6 WAS NORMAL. YEARLY AVERAGE TEMP OF 48.1 WAS NORMAL. MAXIMUM TEMP: 88 ON APRIL 24TH AND APRIL 25TH MINIMUM TEMP: 15 ON JANUARY 23RD DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 1 MINIMUM <= 32: 41 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 2113.5 COOLING DEGREE DAYS: 89.0 DAYS WITH HEATING DEGREE DAYS: 107 DAYS WITH COOLING DEGREE DAYS: 13 PRECIP TOTAL OF 12.30" WAS 1.93" BELOW NORMAL ( 86% OF NORMAL ). GREATEST DAILY RAINFALL: 1.20" ON MARCH 6TH GREATEST 24-HOUR RAINFALL: 1.64" ON JANUARY 17TH-18TH DAYS WITH MEASUREABLE PRECIP: 46 OF 120 OR 38.33% AVERAGE DAILY PRECIP: 0.10" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 46 DAYS WITH PRECIP >= 0.10" 23 DAYS WITH PRECIP >= 0.50" 10 DAYS WITH PRECIP >= 1.00" 3 DAYS WITH THUNDERSTORMS: 5 NUMBER OF THUNDERSTORMS: 6 DAYS WITH SNOW (calendar year 2011): 5 SNOWFALL TOTAL (calendar year 2011): 3.6" SEASONAL SNOW 2010-2011 (beginning December 2010): 19.0" CLOUDY DAYS: 23 PARTLY CLOUDY DAYS: 55 SUNNY/CLEAR DAYS: 42 DAYS WITH F/GF: 27 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 22
OBSERVATIONS AT 3-HOUR INTERVALS
April 2011: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 1 | APR 2 | APR 3 | | | | | |01| |29.53| 0.00| 43| 42| 96|04| 5| 15| |29.74| 0.00| 37| 32| 83|24| 0| 7| |29.95| 0.00| 41| 34| 74|22| 0| 12| |04| |29.51| 0.00| 43| 42| 96|31| 4| 11| |29.73| 0.00| 35| 31| 86|18| 0| 6| |29.96| 0.00| 37| 31| 79|22| 0| 5| |07| |29.53| 0.00| 42| 41| 96|29| 5| 12| |29.71| 0.00| 40| 35| 83|20| 4| 12| |30.06| 0.00| 40| 34| 79|24| 5| 15| |10| |29.58| 0.00| 44| 42| 93|24| 6| 17| |29.71| 0.00| 50| 41| 72|20| 10| 23| |30.14| 0.00| 50| 37| 61|31| 10| 21| |13| |29.58| 0.00| 48| 40| 74|31| 11| 20| |29.68| 0.00| 57| 40| 53|24| 14| 29| |30.11| 0.00| 57| 37| 47|24| 7| 22| |16| |29.58| 0.00| 48| 40| 73|24| 10| 21| |29.67| 0.01| 53| 42| 66|24| 11| 26| |30.06| 0.00| 63| 39| 41|24| 6| 18| |19| |29.65| 0.00| 48| 36| 63|24| 7| 19| |29.77| 0.00| 51| 40| 66|31| 11| 22| |30.06| 0.00| 60| 42| 52|18| 4| 10| |22| |29.73| 0.00| 40| 33| 76|24| 0| 5| |29.91| 0.00| 42| 38| 85|04| 0| 4| |30.05| 0.00| 49| 42| 76|15| 4| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 4 | APR 5 | APR 6 | | | | | |01| |30.01| 0.00| 48| 44| 86|15| 0| 12| |29.65| 0.00| 69| 64| 83|20| 10| 26| |30.00| 0.00| 50| 34| 53|31| 11| 24| |04| |29.94| 0.00| 52| 45| 75|20| 5| 16| |29.54| 0.00| 71| 65| 84|20| 11| 23| |30.06| 0.00| 44| 31| 60|33| 4| 14| |07| |29.93| 0.00| 55| 51| 86|18| 6| 19| |29.52| 0.15| 62| 60| 93|20| 13| 38| |30.15| 0.00| 36| 31| 84|33| 0| 5| |10| |29.89| 0.00| 68| 56| 66|20| 12| 26| |29.43| 0.04| 64| 62| 95|20| 11| 26| |30.22| 0.00| 50| 35| 55|24| 5| 15| |13| |29.80| 0.00| 80| 59| 50|20| 15| 35| |29.55| 0.02| 55| 51| 86|29| 12| 31| |30.17| 0.00| 58| 37| 45|24| 6| 20| |16| |29.69| 0.00| 85| 60| 43|20| 15| 32| |29.66| 0.00| 54| 48| 78|00| 7| 17| |30.07| 0.00| 65| 43| 45|20| 7| 20| |19| |29.66| 0.00| 77| 65| 66|18| 6| 19| |29.73| 0.00| 54| 44| 67|31| 4| 15| |30.02| 0.00| 62| 41| 46|20| 7| 24| |22| |29.66| 0.00| 69| 62| 77|18| 11| 25| |29.88| 0.00| 47| 44| 87|00| 0| 0| |30.07| 0.00| 54| 44| 68|18| 4| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 7 | APR 8 | APR 9 | | | | | |01| |30.07| 0.00| 51| 43| 73|20| 5| 18| |30.11| 0.00| 50| 46| 85|06| 5| 14| |30.01| 0.00| 49| 48| 96|02| 10| 20| |04| |30.04| 0.00| 52| 43| 70|20| 7| 16| |30.12| 0.00| 50| 47| 90|06| 6| 18| |30.05| 0.00| 48| 47| 95|00| 7| 18| |07| |30.04| 0.00| 51| 43| 74|20| 7| 18| |30.13| 0.00| 50| 48| 91|06| 6| 18| |30.11| 0.00| 50| 47| 92|04| 10| 22| |10| |30.05| 0.00| 62| 48| 60|24| 7| 20| |30.13| 0.00| 58| 52| 82|06| 5| 18| |30.20| 0.00| 50| 47| 90|04| 10| 21| |13| |30.02| 0.00| 73| 51| 46|24| 7| 22| |30.03| 0.00| 68| 59| 73|13| 4| 14| |30.20| 0.00| 55| 50| 83|06| 6| 18| |16| |29.97| 0.00| 77| 48| 36|20| 4| 15| |29.94| 0.00| 64| 55| 75|04| 5| 19| |30.15| 0.00| 54| 48| 82|06| 7| 17| |19| |30.01| 0.00| 67| 50| 53|06| 10| 21| |29.94| 0.00| 54| 52| 94|04| 6| 17| |30.13| 0.00| 53| 47| 81|06| 5| 12| |22| |30.10| 0.00| 53| 47| 80|06| 5| 16| |29.98| 0.40| 52| 51| 96|00| 5| 17| |30.14| 0.00| 51| 48| 87|04| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 10 | APR 11 | APR 12 | | | | | |01| |30.12| 0.00| 49| 47| 95|04| 4| 10| |30.03| 0.00| 58| 57| 96|18| 4| 10| |29.77| 0.00| 70| 65| 86|20| 6| 19| |04| |30.12| 0.00| 49| 48| 95|00| 0| 0| |29.96| 0.00| 63| 63| 98|18| 5| 17| |29.72| 0.00| 67| 64| 90|20| 4| 16| |07| |30.15| 0.00| 50| 49| 95|06| 0| 5| |29.98| 0.00| 63| 62| 96|20| 6| 17| |29.73| 0.00| 65| 64| 95|18| 4| 11| |10| |30.16| 0.00| 58| 54| 87|06| 4| 10| |29.96| 0.00| 71| 65| 82|20| 10| 21| |29.75| 0.00| 76| 69| 79|20| 10| 22| |13| |30.16| 0.00| 67| 58| 73|06| 4| 12| |29.88| 0.00| 79| 70| 74|20| 10| 24| |29.69| 0.00| 84| 70| 62|18| 6| 20| |16| |30.08| 0.00| 73| 62| 68|04| 4| 12| |29.78| 0.00| 83| 70| 65|20| 10| 30| |29.71| 0.00| 78| 62| 58|20| 7| 25| |19| |30.07| 0.00| 68| 60| 77|15| 4| 16| |29.74| 0.00| 80| 69| 69|20| 11| 24| |29.72| 0.00| 71| 55| 57|18| 5| 19| |22| |30.04| 0.00| 58| 55| 92|13| 0| 12| |29.77| 0.00| 73| 69| 87|18| 5| 15| |29.78| 0.00| 61| 53| 75|20| 4| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 13 | APR 14 | APR 15 | | | | | |01| |29.79| 0.00| 59| 54| 84|18| 0| 11| |30.01| 0.00| 52| 48| 86|00| 0| 0| |30.17| 0.00| 51| 46| 83|00| 0| 0| |04| |29.78| 0.00| 55| 53| 92|20| 4| 11| |30.02| 0.00| 48| 47| 93|33| 0| 7| |30.19| 0.00| 47| 44| 90|06| 0| 5| |07| |29.82| 0.00| 52| 51| 95|20| 4| 11| |30.06| 0.00| 46| 44| 94|00| 0| 0| |30.24| 0.00| 44| 42| 93|00| 0| 0| |10| |29.87| 0.00| 62| 56| 82|20| 5| 15| |30.09| 0.00| 60| 47| 63|29| 5| 17| |30.28| 0.00| 61| 49| 63|06| 5| 12| |13| |29.85| 0.00| 66| 56| 70|00| 6| 19| |30.09| 0.00| 63| 46| 54|31| 7| 16| |30.28| 0.00| 64| 52| 65|06| 5| 19| |16| |29.86| 0.00| 67| 56| 68|29| 7| 19| |30.08| 0.00| 65| 49| 56|00| 6| 15| |30.26| 0.00| 62| 53| 71|06| 6| 18| |19| |29.91| 0.00| 60| 52| 76|00| 6| 17| |30.10| 0.00| 63| 39| 41|04| 6| 15| |30.26| 0.00| 58| 53| 81|06| 5| 16| |22| |29.97| 0.00| 57| 51| 78|06| 5| 16| |30.15| 0.00| 55| 41| 60|06| 0| 5| |30.26| 0.00| 56| 52| 88|06| 4| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 16 | APR 17 | APR 18 | | | | | |01| |30.19| 0.00| 56| 53| 90|04| 4| 15| |29.66| 0.00| 59| 52| 76|24| 10| 22| |29.99| 0.00| 55| 45| 70|20| 5| 15| |04| |30.10| 0.00| 57| 55| 91|15| 0| 10| |29.75| 0.00| 53| 44| 71|24| 7| 22| |30.00| 0.00| 54| 44| 71|20| 4| 11| |07| |30.05| 0.00| 57| 55| 92|15| 0| 7| |29.85| 0.00| 48| 43| 81|22| 0| 10| |30.04| 0.00| 52| 44| 74|20| 0| 5| |10| |29.99| 0.00| 68| 62| 82|15| 6| 21| |29.91| 0.00| 57| 44| 63|24| 10| 22| |30.07| 0.00| 66| 52| 60|24| 4| 14| |13| |29.86| 0.00| 71| 61| 71|15| 11| 29| |29.93| 0.00| 63| 46| 53|24| 7| 19| |30.05| 0.00| 77| 56| 47|20| 5| 15| |16| |29.68| 0.00| 70| 64| 81|15| 10| 25| |29.88| 0.00| 68| 47| 46|24| 6| 21| |29.98| 0.00| 80| 55| 43|15| 6| 21| |19| |29.58| 0.00| 70| 64| 82|15| 10| 28| |29.90| 0.00| 66| 46| 48|18| 5| 17| |29.99| 0.00| 72| 52| 49|15| 5| 21| |22| |29.58| 0.00| 63| 62| 96|20| 10| 25| |29.97| 0.00| 57| 44| 62|18| 0| 7| |30.04| 0.00| 65| 47| 51|18| 4| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.05 | 0.10 | 0.15 | 0.20 | 0.30 | 0.45 | 0.60 | 0.60 | 0.61 | 0.61 | 0.61 | 0.61 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1304 | 1309 | 1314 | 1319 | 1329 | 1344 | 1400 | 1400 | 1430 | 1430 | 1430 | 1430 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
April 2011: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 19 | APR 20 | APR 21 | | | | | |01| |30.05| 0.00| 62| 53| 73|20| 5| 15| |30.01| 0.00| 66| 58| 76|20| 4| 11| |29.97| 0.00| 69| 61| 75|18| 0| 12| |04| |30.03| 0.00| 59| 54| 82|20| 4| 15| |29.95| 0.00| 63| 60| 90|20| 5| 15| |29.99| 0.00| 65| 58| 80|24| 0| 7| |07| |30.06| 0.00| 58| 55| 89|20| 4| 11| |29.98| 0.00| 64| 62| 94|20| 6| 18| |30.07| 0.00| 62| 56| 82|04| 0| 10| |10| |30.07| 0.00| 70| 61| 73|20| 5| 17| |29.99| 0.00| 75| 69| 82|20| 7| 20| |30.17| 0.00| 62| 50| 66|04| 12| 25| |13| |30.03| 0.00| 80| 64| 57|20| 7| 23| |29.97| 0.00| 85| 70| 61|20| 11| 23| |30.23| 0.00| 61| 48| 63|04| 11| 22| |16| |30.00| 0.00| 83| 65| 55|20| 7| 21| |29.89| 0.00| 85| 69| 58|20| 10| 22| |30.23| 0.00| 60| 46| 59|04| 4| 17| |19| |29.97| 0.00| 78| 63| 60|15| 5| 15| |29.91| 0.00| 83| 65| 54|18| 5| 21| |30.25| 0.00| 59| 42| 53|04| 10| 20| |22| |30.01| 0.00| 70| 59| 66|18| 5| 20| |29.95| 0.00| 74| 63| 67|18| 4| 10| |30.31| 0.00| 53| 42| 67|06| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 22 | APR 23 | APR 24 | | | | | |01| |30.33| 0.00| 47| 41| 82|00| 0| 0| |30.25| 0.00| 53| 51| 93|06| 0| 6| |30.09| 0.00| 69| 66| 91|20| 4| 14| |04| |30.30| 0.00| 43| 40| 90|00| 0| 0| |30.14| 0.00| 56| 54| 93|15| 4| 14| |30.09| 0.00| 67| 66| 95|20| 5| 17| |07| |30.35| 0.00| 50| 44| 79|04| 4| 14| |30.17| 0.00| 59| 57| 94|13| 0| 10| |30.12| 0.00| 66| 65| 96|20| 5| 16| |10| |30.38| 0.00| 58| 48| 70|06| 5| 20| |30.17| 0.00| 71| 66| 86|20| 5| 18| |30.13| 0.00| 76| 71| 85|18| 6| 19| |13| |30.35| 0.00| 59| 49| 69|06| 4| 16| |30.13| 0.00| 78| 70| 75|18| 7| 21| |30.08| 0.00| 84| 70| 64|20| 7| 22| |16| |30.34| 0.00| 56| 48| 74|04| 5| 16| |30.06| 0.00| 83| 72| 71|18| 7| 28| |30.03| 0.00| 88| 70| 56|18| 6| 21| |19| |30.30| 0.00| 54| 48| 81|06| 0| 11| |30.04| 0.00| 80| 70| 71|18| 5| 18| |30.00| 0.00| 85| 69| 60|18| 6| 18| |22| |30.29| 0.00| 53| 49| 88|04| 4| 15| |30.09| 0.00| 74| 68| 83|18| 4| 14| |30.05| 0.00| 76| 69| 79|20| 5| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 25 | APR 26 | APR 27 | | | | | |01| |30.09| 0.00| 71| 67| 86|20| 5| 16| |30.03| 0.00| 68| 64| 88|20| 0| 11| |29.98| 0.00| 67| 66| 95|15| 4| 12| |04| |30.07| 0.00| 68| 65| 92|20| 4| 16| |30.03| 0.00| 66| 64| 94|22| 0| 10| |29.97| 0.00| 68| 67| 97|13| 4| 16| |07| |30.10| 0.00| 65| 64| 95|20| 0| 10| |30.05| 0.00| 69| 67| 94|20| 4| 12| |30.00| 0.00| 67| 67| 98|13| 0| 10| |10| |30.09| 0.00| 76| 69| 79|20| 7| 21| |30.05| 0.00| 76| 72| 86|20| 4| 14| |29.99| 0.00| 78| 74| 88|15| 5| 16| |13| |30.06| 0.00| 84| 74| 70|18| 6| 22| |30.00| 0.00| 84| 74| 72|15| 5| 17| |29.95| 0.00| 83| 75| 77|15| 6| 20| |16| |30.00| 0.00| 88| 72| 60|18| 7| 20| |29.98| 0.00| 73| 73| 97|15| 4| 12| |29.91| 0.00| 83| 74| 75|15| 6| 19| |19| |29.99| 0.00| 82| 69| 64|20| 5| 17| |29.98| 0.00| 72| 71| 94|15| 5| 17| |29.90| 0.00| 80| 72| 77|15| 6| 23| |22| |30.03| 0.00| 73| 65| 77|15| 5| 17| |29.99| 0.00| 70| 68| 95|15| 4| 14| |29.94| 0.00| 74| 70| 87|15| 6| 20| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 28 | APR 29 | APR 30 | | | | | |01| |29.91| 0.00| 71| 69| 93|15| 6| 19| |29.78| 0.00| 67| 66| 98|18| 4| 10| |30.01| 0.00| 63| 50| 63|00| 5| 15| |04| |29.85| 0.00| 72| 69| 90|18| 6| 22| |29.80| 0.00| 62| 58| 86|29| 0| 10| |30.04| 0.00| 58| 47| 67|04| 5| 16| |07| |29.84| 0.00| 73| 70| 89|15| 7| 26| |29.86| 0.00| 58| 54| 88|24| 0| 5| |30.09| 0.00| 54| 46| 73|33| 0| 5| |10| |29.80| 0.00| 78| 73| 84|15| 10| 24| |29.89| 0.00| 66| 51| 60|24| 6| 16| |30.11| 0.00| 62| 46| 55|00| 7| 17| |13| |29.75| 0.00| 84| 73| 71|20| 12| 30| |29.87| 0.00| 70| 50| 49|24| 7| 21| |30.12| 0.00| 65| 46| 50|00| 7| 20| |16| |29.78| 0.00| 80| 70| 72|20| 12| 28| |29.84| 0.00| 73| 51| 47|24| 7| 23| |30.12| 0.00| 65| 50| 60|04| 7| 17| |19| |29.73| 0.05| 70| 69| 97|15| 5| 17| |29.88| 0.00| 71| 51| 49|24| 5| 19| |30.16| 0.00| 62| 49| 62|04| 6| 16| |22| |29.78| 0.01| 69| 68| 98|18| 5| 15| |29.93| 0.00| 62| 50| 66|24| 0| 4| |30.21| 0.00| 56| 49| 76|06| 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| |29.998| 57| 52| 83| 3.5| 20 | 0.9| |04| |29.984| 56| 51| 85| 3.2| 20 | 1.6| |07| |30.013| 55| 51| 88| 3.0| 19 | 1.6| |10| |30.027| 63| 55| 75| 6.5| 21 | 2.7| |13| |30.003| 69| 56| 65| 7.1| 22 | 2.9| |16| |29.967| 69| 56| 64| 6.5| 20 | 2.8| |19| |29.969| 66| 54| 67| 5.5| 16 | 1.8| |22| |30.009| 60| 53| 79| 3.1| 17 | 2.0| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
April 2011: 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| | | | | |0.01| | |0.01| | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | |0.01| |0.04| | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | |0.15| |0.01|0.04|0.02|0.01|0.02|0.01|0.01| | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | |0.03| | |0.04|0.40|0.06|08 09| | |0.01| | | | | | | | | | | | | | | | | | | | |0.02|09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | |0.01| | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | |0.27|0.15| | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | |0.01|22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | |0.59|0.02| | |0.01| | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | |0.05|0.18|0.05| | |0.01| |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.00|0.01|0.00|0.00|0.01|0.00|0.15|0.01|0.01|0.04|0.02|0.01|0.02|0.60|0.03|0.01|0.05|0.26|0.05|0.27|0.20|0.41|0.09|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.)