LOCAL CLIMATOLOGICAL DATA Monthly Summary
April 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| 66.1 | 46.1 | 56.1 | 57.3 | 53| 85| 9| 0|.........| 0| 0.00| 0.0| 30.12| 29.94|30.021| 2.7| 2.7|142| 17|SSE| 0| 0| | |02| 66.4 | 54.8 | 60.6 | 60.6 | 58| 90| 4| 0|1......8.| 0| 0.03| 0.0| 29.99| 29.67|29.896| 2.5| 2.0| 91| 16| SE| 0| 0| | |03| 78.0 | 58.5 | 68.3 | 67.8 | 58| 75| 0| 4|1......8.| 0| 0.03| 0.0| 29.64| 29.27|29.409|10.0| 8.3|218| 39|SSW| 0| 0| | |04| 71.0 | 49.8 | 60.4 | 59.8 | 42| 53| 4| 0|.........| 0| 0.00| 0.0| 29.85| 29.63|29.762| 9.0| 8.9|248| 31|WSW| 0| 0| | |05| 75.7 | 42.7 | 59.2 | 59.2 | 44| 60| 5| 0|.........| 0| 0.00| 0.0| 29.97| 29.68|29.854| 3.1| 2.2|145| 24|SSE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 70.2 | 54.9 | 62.5 | 63.2 | 57| 82| 2| 0|.........| 0| 0.26| 0.0| 29.66| 29.27|29.416| 6.7| 4.9|225| 29|WNW| 0| 0| | |07| 54.9 | 40.5 | 47.7 | 47.3 | 33| 59| 17| 0|.........| 0| 0.00| 0.0| 29.77| 29.42|29.570| 9.1| 9.0|249| 34|WSW| 0| 0| | |08| 59.1 | 34.0*| 46.5*| 46.6 | 32| 58| 18| 0|.........| 0| 0.00| 0.0| 29.87| 29.75|29.807| 5.7| 5.3|234| 29|WSW| 0| 0| | |09| 66.0 | 43.3 | 54.7 | 53.4 | 42| 66| 10| 0|.........| 0| 0.14| 0.0| 30.02| 29.82|29.887| 3.7| 1.8|251| 20|SSW| 0| 0| | |10| 81.6 | 48.1 | 64.8 | 64.2 | 52| 68| 0| 0|.........| 0| 0.00| 0.0| 30.03| 29.84|29.941| 6.7| 6.5|198| 35|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 68.4 | 48.0 | 58.2 | 59.6 | 55| 85| 7| 0|.........| 0| 0.34| 0.0| 30.04| 29.68|29.802| 8.6| 3.2|291| 31| N| 0| 0| | |12| 58.1 | 42.7 | 50.4 | 49.5 | 35| 59| 14| 0|.........| 0| 0.00| 0.0| 30.23| 30.05|30.170| 6.5| 5.4|347| 27| N| 0| 0| | |13| 58.0 | 39.0 | 48.5 | 48.1 | 41| 76| 16| 0|.........| 0| T | 0.0| 30.26| 30.03|30.176| 3.0| 2.0|105| 15| NE| 0| 0| | |14| 74.1 | 52.5 | 63.3 | 59.8 | 58| 93| 1| 0|1........| 0| 0.40| 0.0| 30.00| 29.69|29.797| 4.7| 1.3|127| 21|SSW| 0| 0| | |15| 54.3 | 42.3 | 48.3 | 49.5 | 48| 94| 17| 0|1........| 0| 0.39| 0.0| 30.08| 29.70|29.858| 8.8| 8.1|353| 28| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 55.7 | 40.8 | 48.3 | 48.3 | 37| 67| 16| 0|.........| 0| 0.02| 0.0| 30.34| 30.10|30.225|11.2|10.4| 22| 31| N| 0| 0| | |17| 72.2 | 35.7 | 53.9 | 53.6 | 41| 65| 11| 0|.........| 0| 0.00| 0.0| 30.38| 30.18|30.287| 2.5| 2.5|249| 19|WSW| 0| 0| | |18| 79.6 | 45.9 | 62.8 | 61.7 | 46| 60| 2| 0|.........| 0| 0.00| 0.0| 30.18| 29.99|30.093| 3.7| 3.0|235| 18|WSW| 0| 0| | |19| 77.8 | 54.0 | 65.9 | 63.4 | 51| 66| 0| 1|.........| 0| T | 0.0| 30.00| 29.93|29.967| 4.6| 2.3|209| 18|WSW| 0| 0| | |20| 76.6 | 55.0 | 65.8 | 63.3 | 61| 91| 0| 1|1.3.5....| 0| 0.99| 0.0| 29.97| 29.66|29.801| 3.0| 3.0|155| 35|SSE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 76.3 | 56.0 | 66.2 | 64.4 | 57| 80| 0| 1|.........| 0| 0.02| 0.0| 29.78| 29.63|29.722| 4.3| 0.4|140| 24| S| 0| 0| | |22| 61.9 | 46.3 | 54.1 | 55.7 | 47| 75| 11| 0|1........| 0| 0.09| 0.0| 29.97| 29.72|29.786| 6.0| 5.7|249| 36|WSW| 0| 0| | |23| 69.9 | 43.2 | 56.6 | 57.0 | 42| 59| 8| 0|.........| 0| 0.00| 0.0| 30.23| 29.95|30.055| 4.9| 3.6|307| 26|WNW| 0| 0| | |24| 81.7 | 45.1 | 63.4 | 64.1 | 54| 71| 1| 0|.........| 0| 0.00| 0.0| 30.32| 30.19|30.254| 2.7| 2.7|145| 18| SE| 0| 0| | |25| 91.9 | 64.3 | 78.1 | 76.5 | 67| 75| 0| 13|.........| 0| 0.00| 0.0| 30.30| 30.21|30.247| 5.0| 4.5|197| 22|WSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 92.8*| 64.5 | 78.7*| 78.4 | 65| 66| 0| 14|.........| 0| 0.00| 0.0| 30.32| 30.23|30.272| 4.4| 3.6|213| 22|WSW| 0| 0| | |27| 91.1 | 61.5 | 76.3 | 76.4 | 63| 67| 0| 12|.........| 0| 0.00| 0.0| 30.40| 30.32|30.353| 3.1| 2.5|204| 21| S| 0| 0| | |28| 86.9 | 59.6 | 73.3 | 73.5 | 60| 64| 0| 9|.........| 0| 0.00| 0.0| 30.37| 30.24|30.312| 4.1| 3.6|198| 22|WSW| 0| 0| | |29| 71.2 | 53.6 | 62.4 | 61.4 | 55| 82| 2| 0|1........| 0| 0.00| 0.0| 30.39| 30.24|30.312| 7.7| 6.9| 42| 29| NE| 0| 0| | |30| 72.0 | 53.3 | 62.7 | 61.0 | 55| 82| 2| 0|1......8.| 0| 0.00| 0.0| 30.38| 30.21|30.315| 3.8| 3.5| 46| 20| NE| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2159.5|1476.0|------|------|---|----| 177| 55| Days | 2.71| 0.0| 30.40| 29.27|29.979| 5.4| 1.4|233| 39|SSW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|-0.76" OR 78% OF NORMAL +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 72.0| 49.1| 60.6 | 60.1 | 50|72.4|----|----|>.01 Inch 11|11.00| 0.7| 27 | 3 |------|----|----|---| 3 | 1+ | | | +2.3 +0.4 +1.4 ------+---+----+----+----+------------|-3.22" OR 77% 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 |3327| 65|Thunder 1|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 0.99| 20 | 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 3 | 0 | 0 | 0 |----|----| Clear 11 Partly Cloudy 17 Cloudy 2 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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: COLDFROPA 3RD, 6TH, 7TH, 9TH, 10TH (WARMFROPA), 11TH, 14TH & WARMFROPA ON 14TH, 15TH, 19TH (BACKDOOR),21ST,22ND,30TH,30th(WARMFROPA)

STATION RECORDS:
17th- TEMPERATURE TIED - Minimum 36 [previous 1988]
22nd - WIND GUST - 36mph [previous 30mph in 1995]
25th - TEMPERATURE - Maximum 92 [pervious 88 1994]
26th - TEMPERATURE TIED - Maximum 93 [previous 1990]
26th - TEMPERATURE - Maximum Minimum 64 [previous 63 1990] MONTHLY AVERAGE MAXIMUM TEMP OF 72.0 WAS 2.3 ABOVE NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 49.1 WAS 0.4 ABOVE NORMAL. MONTHLY AVERAGE TEMP OF 60.6 WAS 1.4 ABOVE NORMAL. MAXIMUM TEMP: 93 ON THE 26TH MINIMUM TEMP: 34 ON THE 8TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 3 MAXIMUM <= 32: 1 MINIMUM <= 32: 6 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 185.0 COOLING DEGREE DAYS: 52.0 DAYS WITH HEATING DEGREE DAYS: 21 DAYS WITH COOLING DEGREE DAYS: 8 PRECIP TOTAL OF 2.71" WAS 0.76" BELOW NORMAL (78% OF NORMAL). GREATEST DAILY RAINFALL: 0.99" ON THE 20TH GREATEST 24-HOUR RAINFALL: 0.99" ON THE 20TH DAYS WITH MEASUREABLE PRECIP: 11 OR 36.67% AVERAGE DAILY PRECIP: 0.09" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 13 DAYS WITH PRECIP >= 0.10" 11 DAYS WITH PRECIP >= 0.50" 4 DAYS WITH PRECIP >= 1.00" 0 DAYS WITH THUNDERSTORMS: 1 NUMBER OF THUNDERSTORMS: 1 DAYS WITH SNOW: 00 SNOWFALL TOTAL: 0.0" CLOUDY DAYS: 2 PARTLY CLOUDY DAYS: 17 SUNNY/CLEAR DAYS: 11 DAYS WITH F/GF: 8 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 1 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 56.8 WAS 0.9 BELOW NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 38.3 WAS 0.3 BELOW NORMAL. YEARLY AVERAGE TEMP OF 47.5 WAS 0.7 BELOW NORMAL. MAXIMUM TEMP: 93 ON APRIL 26TH MINIMUM TEMP: 16 ON JANUARY 13TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 3 MAXIMUM <= 32: 4 MINIMUM <= 32: 41 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 2157.5 COOLING DEGREE DAYS: 60.5 DAYS WITH HEATING DEGREE DAYS:108 DAYS WITH COOLING DEGREE DAYS: 11 PRECIP TOTAL OF 11.00" WAS 3.22" BELOW NORMAL ( 77% OF NORMAL). GREATEST DAILY RAINFALL: 0.99" ON APRIL 20TH GREATEST 24-HOUR RAINFALL: 1.00" ON MARCH 1ST-2ND DAYS WITH MEASUREABLE PRECIP: 37 OF 120 OR 30.83% AVERAGE DAILY PRECIP: 0.09" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 37 DAYS WITH PRECIP >= 0.10" 27 DAYS WITH PRECIP >= 0.50" 6 DAYS WITH PRECIP >= 1.00" 0 DAYS WITH THUNDERSTORMS: 1 NUMBER OF THUNDERSTORMS: 1 DAYS WITH SNOW: 06 SNOWFALL TOTAL: 0.7" CLOUDY DAYS: 25 PARTLY CLOUDY DAYS: 46 SUNNY/CLEAR DAYS: 49 DAYS WITH F/GF: 35 DAYS WITH DENSE FOG: 2 DAYS WITH FROST: 22
OBSERVATIONS AT 3-HOUR INTERVALS
April 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 1 | APR 2 | APR 3 | | | | | |01| |30.12| 0.00| 46| 44| 91|13| 4| 12| |29.97| 0.00| 59| 57| 93|15| 0| 5| |29.64| 0.02| 60| 59| 98|13| 0| 7| |04| |30.07| 0.00| 49| 46| 89|13| 0| 7| |29.96| 0.00| 56| 54| 94|00| 0| 0| |29.50| 0.00| 60| 60| 99|15| 4| 14| |07| |30.05| 0.00| 51| 48| 90|13| 4| 14| |29.96| 0.00| 56| 55| 97|13| 0| 4| |29.42| 0.00| 62| 62| 99|13| 5| 14| |10| |30.08| 0.00| 56| 52| 86|13| 4| 12| |29.99| 0.00| 62| 59| 90|04| 4| 11| |29.32| 0.00| 68| 67| 96|18| 10| 23| |13| |30.01| 0.00| 64| 56| 76|15| 5| 15| |29.90| 0.00| 66| 59| 79|06| 4| 14| |29.28| 0.00| 78| 62| 59|20| 17| 34| |16| |29.95| 0.00| 65| 57| 75|13| 4| 12| |29.90| 0.00| 65| 59| 80|04| 4| 11| |29.30| 0.00| 76| 56| 51|24| 16| 37| |19| |29.95| 0.00| 65| 59| 81|13| 4| 15| |29.79| 0.00| 62| 58| 89|06| 4| 10| |29.38| 0.00| 73| 55| 53|24| 14| 33| |22| |29.98| 0.00| 61| 58| 90|13| 0| 7| |29.72| 0.01| 60| 59| 97|13| 4| 15| |29.52| 0.00| 65| 49| 57|24| 13| 27| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 4 | APR 5 | APR 6 | | | | | |01| |29.63| 0.00| 57| 44| 63|24| 12| 23| |29.86| 0.00| 53| 40| 60|31| 0| 7| |29.66| 0.00| 61| 53| 74|18| 5| 15| |04| |29.68| 0.00| 53| 43| 70|24| 7| 21| |29.89| 0.00| 47| 39| 74|31| 0| 4| |29.59| 0.00| 62| 57| 86|15| 5| 17| |07| |29.76| 0.00| 50| 41| 72|24| 6| 21| |29.92| 0.00| 43| 38| 84|00| 0| 0| |29.52| 0.00| 65| 61| 89|15| 5| 15| |10| |29.82| 0.00| 57| 41| 54|24| 11| 23| |29.96| 0.00| 59| 40| 48|04| 5| 11| |29.37| 0.00| 70| 67| 90|18| 6| 17| |13| |29.80| 0.00| 64| 41| 42|24| 12| 28| |29.90| 0.00| 69| 44| 41|20| 4| 11| |29.34| 0.08| 62| 59| 91|29| 10| 29| |16| |29.76| 0.00| 70| 45| 40|24| 12| 29| |29.81| 0.00| 76| 50| 41|15| 6| 19| |29.30| 0.00| 64| 60| 87|24| 6| 16| |19| |29.77| 0.00| 68| 43| 40|24| 10| 23| |29.77| 0.00| 68| 48| 49|15| 5| 18| |29.28| 0.00| 63| 54| 71|24| 5| 16| |22| |29.83| 0.00| 58| 39| 48|24| 0| 6| |29.73| 0.00| 61| 53| 74|15| 5| 16| |29.37| 0.00| 59| 47| 64|24| 7| 22| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 7 | APR 8 | APR 9 | | | | | |01| |29.42| 0.00| 52| 41| 65|24| 12| 27| |29.79| 0.00| 39| 29| 68|24| 0| 10| |29.85| 0.00| 46| 34| 64|22| 4| 7| |04| |29.46| 0.00| 47| 37| 67|24| 11| 27| |29.80| 0.00| 35| 28| 75|27| 0| 5| |29.82| 0.00| 44| 38| 79|18| 0| 7| |07| |29.53| 0.00| 43| 35| 73|24| 6| 17| |29.84| 0.00| 34| 28| 77|24| 4| 11| |29.85| 0.13| 46| 44| 93|20| 6| 20| |10| |29.57| 0.00| 47| 32| 54|29| 7| 20| |29.87| 0.00| 46| 32| 57|24| 11| 27| |29.90| 0.00| 54| 47| 78|24| 5| 17| |13| |29.56| 0.00| 52| 34| 50|24| 10| 23| |29.82| 0.00| 56| 36| 48|24| 12| 29| |29.89| 0.00| 61| 40| 46|24| 7| 18| |16| |29.57| 0.00| 50| 32| 50|24| 12| 30| |29.75| 0.00| 58| 36| 44|24| 11| 26| |29.88| 0.00| 63| 40| 42|00| 6| 15| |19| |29.64| 0.00| 46| 29| 50|24| 12| 25| |29.77| 0.00| 55| 35| 46|24| 6| 19| |29.92| 0.00| 60| 42| 52|15| 4| 15| |22| |29.74| 0.00| 42| 27| 55|24| 6| 16| |29.82| 0.00| 48| 34| 57|22| 0| 6| |29.99| 0.00| 52| 44| 74|15| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 10 | APR 11 | APR 12 | | | | | |01| |30.03| 0.00| 49| 46| 88|15| 0| 10| |29.83| 0.00| 66| 58| 77|18| 5| 16| |30.05| 0.00| 46| 43| 90|00| 0| 0| |04| |30.00| 0.00| 48| 46| 93|13| 0| 10| |29.68| 0.04| 62| 61| 97|15| 6| 23| |30.11| 0.00| 49| 37| 65|02| 7| 21| |07| |30.00| 0.00| 52| 50| 95|15| 4| 15| |29.72| 0.00| 60| 59| 95|20| 10| 18| |30.19| 0.00| 45| 34| 67|00| 7| 21| |10| |29.99| 0.00| 65| 59| 80|20| 6| 16| |29.70| 0.00| 64| 58| 82|20| 7| 20| |30.23| 0.00| 48| 31| 52|33| 11| 21| |13| |29.96| 0.00| 78| 60| 54|20| 11| 22| |29.72| 0.00| 66| 56| 70|29| 10| 25| |30.22| 0.00| 52| 32| 46|29| 7| 17| |16| |29.89| 0.00| 80| 54| 40|20| 16| 30| |29.82| 0.00| 55| 51| 87|00| 12| 23| |30.15| 0.00| 57| 31| 37|29| 10| 21| |19| |29.85| 0.00| 73| 49| 42|20| 10| 20| |29.93| 0.00| 53| 48| 83|33| 12| 22| |30.17| 0.00| 54| 35| 50|04| 7| 16| |22| |29.87| 0.00| 67| 50| 54|18| 4| 15| |30.01| 0.00| 52| 46| 80|33| 7| 21| |30.21| 0.00| 46| 36| 68|04| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 13 | APR 14 | APR 15 | | | | | |01| |30.24| 0.00| 41| 36| 82|04| 0| 5| |30.00| 0.01| 53| 48| 85|13| 4| 12| |29.73| 0.21| 53| 53| 98|04| 5| 11| |04| |30.22| 0.00| 39| 36| 88|04| 0| 4| |29.90| 0.00| 54| 53| 94|13| 0| 5| |29.71| 0.03| 51| 51| 98|00| 6| 16| |07| |30.25| 0.00| 42| 39| 88|04| 0| 6| |29.85| 0.02| 57| 57| 98|13| 4| 14| |29.78| 0.01| 49| 49| 98|33| 6| 15| |10| |30.26| 0.00| 51| 41| 68|04| 5| 15| |29.79| 0.00| 61| 61| 99|13| 4| 12| |29.82| 0.00| 50| 49| 96|31| 7| 15| |13| |30.19| 0.00| 57| 43| 59|04| 4| 11| |29.75| 0.00| 68| 64| 88|20| 6| 16| |29.84| 0.00| 52| 49| 92|00| 11| 20| |16| |30.13| 0.00| 52| 42| 71|15| 4| 13| |29.69| 0.00| 69| 63| 82|24| 7| 18| |29.89| 0.00| 51| 48| 92|33| 10| 20| |19| |30.10| 0.00| 50| 44| 78|15| 4| 14| |29.69| 0.00| 58| 56| 95|04| 7| 18| |29.98| 0.00| 46| 44| 91|00| 13| 24| |22| |30.06| 0.00| 51| 46| 82|13| 4| 10| |29.75| 0.00| 56| 54| 95|04| 5| 15| |30.06| 0.00| 43| 41| 92|00| 12| 26| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 16 | APR 17 | APR 18 | | | | | |01| |30.10| 0.01| 42| 41| 94|00| 12| 29| |30.31| 0.00| 40| 34| 80|00| 0| 0| |30.18| 0.00| 51| 44| 76|20| 5| 7| |04| |30.11| 0.01| 42| 39| 91|00| 10| 23| |30.32| 0.00| 36| 34| 90|00| 0| 0| |30.15| 0.00| 48| 42| 78|20| 4| 10| |07| |30.15| 0.00| 43| 41| 91|00| 7| 18| |30.35| 0.00| 37| 34| 91|09| 0| 5| |30.15| 0.00| 46| 41| 82|20| 0| 6| |10| |30.22| 0.00| 50| 38| 62|02| 15| 29| |30.37| 0.00| 53| 39| 60|24| 5| 12| |30.15| 0.00| 61| 48| 61|24| 5| 15| |13| |30.25| 0.00| 54| 39| 57|00| 12| 21| |30.32| 0.00| 65| 43| 45|24| 5| 15| |30.12| 0.00| 73| 46| 37|29| 7| 17| |16| |30.27| 0.00| 55| 41| 59|04| 14| 28| |30.24| 0.00| 71| 45| 39|24| 5| 13| |30.03| 0.00| 78| 51| 39|27| 5| 14| |19| |30.31| 0.00| 52| 30| 44|04| 13| 28| |30.19| 0.00| 69| 47| 45|27| 4| 13| |30.00| 0.00| 72| 50| 46|13| 4| 12| |22| |30.34| 0.00| 46| 33| 60|04| 4| 14| |30.20| 0.00| 57| 47| 69|22| 0| 5| |30.01| 0.00| 60| 49| 65|15| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.07 | 0.13 | 0.20 | 0.26 | 0.39 | 0.58 | 0.77 | 0.81 | 0.85 | 0.88 | 0.88 | 0.88 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1704 | 1709 | 1714 | 1719 | 1729 | 1744 | 1800 | 1820 | 1840 | 1855 | 1855 | 1855 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 19 | APR 20 | APR 21 | | | | | |01| |30.00| 0.00| 58| 50| 75|20| 4| 10| |29.97| 0.00| 56| 52| 87|13| 0| 6| |29.75| 0.00| 63| 62| 97|18| 5| 12| |04| |29.97| 0.00| 56| 47| 72|18| 4| 10| |29.90| 0.00| 55| 52| 90|04| 0| 4| |29.75| 0.00| 60| 60| 98|18| 0| 5| |07| |29.99| 0.00| 54| 47| 76|20| 4| 10| |29.88| 0.00| 56| 55| 95|13| 0| 7| |29.77| 0.00| 57| 56| 97|00| 0| 4| |10| |29.98| 0.00| 67| 52| 59|24| 5| 15| |29.86| 0.00| 65| 62| 89|15| 4| 16| |29.75| 0.00| 64| 57| 78|04| 7| 17| |13| |29.95| 0.00| 76| 56| 51|24| 5| 12| |29.76| 0.00| 73| 68| 82|15| 4| 15| |29.70| 0.00| 68| 59| 72|04| 5| 12| |16| |29.93| 0.00| 74| 52| 46|20| 6| 14| |29.69| 0.00| 73| 69| 89|15| 6| 17| |29.63| 0.00| 74| 58| 57|18| 6| 20| |19| |29.94| 0.00| 62| 52| 70|04| 7| 14| |29.67| 0.12| 65| 65| 98|18| 0| 15| |29.65| 0.00| 70| 54| 56|20| 7| 15| |22| |29.98| 0.00| 56| 50| 82|04| 4| 10| |29.74| 0.01| 64| 63| 98|15| 5| 15| |29.77| 0.00| 58| 51| 77|29| 4| 13| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 22 | APR 23 | APR 24 | | | | | |01| |29.78| 0.00| 55| 53| 93|15| 0| 10| |29.96| 0.00| 45| 39| 78|22| 0| 4| |30.23| 0.00| 50| 44| 82|13| 0| 7| |04| |29.72| 0.00| 55| 54| 97|18| 0| 6| |29.95| 0.00| 44| 39| 82|02| 0| 4| |30.24| 0.00| 47| 43| 86|13| 0| 4| |07| |29.73| 0.02| 54| 53| 97|11| 0| 7| |30.01| 0.00| 46| 38| 73|00| 4| 11| |30.29| 0.00| 46| 43| 90|00| 0| 0| |10| |29.74| 0.00| 59| 54| 85|24| 6| 21| |30.05| 0.00| 59| 43| 54|24| 6| 18| |30.31| 0.00| 67| 52| 59|13| 4| 12| |13| |29.73| 0.00| 60| 44| 54|24| 11| 29| |30.06| 0.00| 68| 43| 41|29| 11| 24| |30.28| 0.00| 75| 60| 59|13| 5| 13| |16| |29.77| 0.00| 59| 41| 52|24| 14| 30| |30.07| 0.00| 69| 43| 40|33| 10| 20| |30.21| 0.00| 81| 66| 59|13| 4| 14| |19| |29.85| 0.00| 55| 42| 61|24| 6| 19| |30.10| 0.00| 67| 41| 38|00| 6| 15| |30.20| 0.00| 77| 63| 62|13| 5| 14| |22| |29.95| 0.00| 50| 38| 64|27| 0| 7| |30.20| 0.00| 54| 45| 71|13| 0| 10| |30.24| 0.00| 69| 62| 78|13| 4| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 25 | APR 26 | APR 27 | | | | | |01| |30.25| 0.00| 68| 63| 84|18| 6| 14| |30.26| 0.00| 72| 66| 82|18| 5| 12| |30.32| 0.00| 70| 60| 72|18| 4| 11| |04| |30.22| 0.00| 66| 64| 93|18| 5| 15| |30.25| 0.00| 68| 64| 88|18| 4| 14| |30.34| 0.00| 64| 61| 88|15| 0| 5| |07| |30.26| 0.00| 64| 63| 97|18| 4| 12| |30.29| 0.00| 65| 61| 88|18| 4| 10| |30.38| 0.00| 62| 59| 92|15| 0| 6| |10| |30.30| 0.00| 75| 69| 82|20| 6| 16| |30.31| 0.00| 78| 66| 68|24| 7| 22| |30.40| 0.00| 77| 67| 71|24| 4| 12| |13| |30.26| 0.00| 87| 71| 60|24| 6| 18| |30.29| 0.00| 89| 70| 53|24| 6| 20| |30.37| 0.00| 87| 68| 53|24| 6| 17| |16| |30.22| 0.00| 92| 71| 50|24| 5| 16| |30.24| 0.00| 92| 69| 47|24| 5| 17| |30.33| 0.00| 91| 67| 45|18| 5| 16| |19| |30.21| 0.00| 84| 69| 60|18| 5| 15| |30.24| 0.00| 87| 64| 47|18| 5| 15| |30.32| 0.00| 85| 62| 47|18| 5| 14| |22| |30.25| 0.00| 76| 67| 73|18| 4| 11| |30.30| 0.00| 76| 61| 59|18| 0| 7| |30.36| 0.00| 75| 62| 65|13| 4| 11| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 28 | APR 29 | APR 30 | | | | | |01| |30.37| 0.00| 68| 59| 72|18| 4| 11| |30.25| 0.00| 67| 58| 74|18| 0| 7| |30.38| 0.00| 54| 50| 88|04| 5| 15| |04| |30.34| 0.00| 64| 57| 77|15| 0| 6| |30.24| 0.00| 62| 58| 87|18| 0| 6| |30.34| 0.00| 54| 50| 89|04| 4| 10| |07| |30.35| 0.00| 60| 55| 86|15| 0| 5| |30.26| 0.00| 61| 57| 88|18| 0| 10| |30.37| 0.00| 55| 52| 90|06| 4| 10| |10| |30.37| 0.00| 74| 60| 62|22| 5| 17| |30.28| 0.00| 71| 61| 72|00| 5| 14| |30.37| 0.00| 60| 54| 83|04| 5| 14| |13| |30.33| 0.00| 83| 64| 53|18| 6| 18| |30.34| 0.00| 63| 55| 75|04| 13| 24| |30.33| 0.00| 66| 58| 76|04| 5| 13| |16| |30.26| 0.00| 87| 63| 45|18| 7| 22| |30.35| 0.00| 59| 53| 81|04| 13| 27| |30.26| 0.00| 71| 61| 69|00| 5| 14| |19| |30.24| 0.00| 80| 62| 54|18| 5| 14| |30.36| 0.00| 55| 51| 86|04| 14| 28| |30.25| 0.00| 67| 60| 78|04| 0| 11| |22| |30.24| 0.00| 72| 60| 67|18| 4| 10| |30.39| 0.00| 54| 50| 88|04| 11| 20| |30.24| 0.00| 60| 57| 89|18| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------------------------------------------+---------------------------------------+---------------------------------------+
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| |30.020| 55| 49| 82| 3.1| 20 | 1.3| |04| |29.998| 53| 49| 86| 2.3| 21 | 0.4| |07| |30.017| 53| 49| 88| 2.8| 20 | 0.8| |10| |30.025| 61| 52| 74| 5.8| 25 | 1.7| |13| |30.000| 67| 53| 63| 7.2| 26 | 3.1| |16| |29.970| 68| 53| 61| 7.5| 25 | 2.6| |19| |29.977| 64| 51| 65| 6.2| 23 | 0.5| |22| |30.018| 58| 50| 75| 3.4| 16 | 0.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
April 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| | | | | | | | | | | | | | | | | | | | | |0.01|0.01|0.01|02 03| |0.02| | | | | | | | | | | | | | | | |0.01| | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | |0.05|0.08|0.13| | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | |0.13|0.01| | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | |0.06|0.24|0.04| | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| |0.01|0.01| | |0.03|0.03|0.02|0.07|0.01| | | | | | | |0.11| | | | | |0.11|14 15| |0.21|0.07|0.05|0.03|0.01|0.01|0.01| | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| |0.01| | |0.01| | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | |0.10| | |0.76|0.12| | |0.01| |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | |0.02|21 22| | |0.04|0.01| | |0.01|0.02| | | |0.01| | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.25|0.18|0.30|0.08|0.04|0.05|0.18|0.08|0.01|0.00|0.01|0.05|0.08|0.13|0.10|0.00|0.11|0.77|0.12|0.00|0.01|0.02|0.14|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.)