LOCAL CLIMATOLOGICAL DATA Monthly Summary
December 2008
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| 58.7 | 42.1 | 50.4 | 51.0 | 41| 70| 14| 0|.........| 0| T | 0.0| 30.02| 29.46|29.703|10.1|10.1|203| 35|SSW| 1|201| | |02| 45.1 | 33.2 | 39.2 | 40.3 | 32| 73| 26| 0|.........| 0| 0.00| 0.0| 30.26| 30.01|30.145| 3.4| 3.1|222| 19|SSW| 2|199| | |03| 48.4 | 28.5 | 38.5 | 38.1 | 30| 73| 26| 0|.........| 0| 0.00| 0.0| 30.38| 30.25|30.310| 1.8| 1.7|234| 17|WSW| 1|252| | |04| 55.5 | 34.4 | 45.0 | 44.5 | 35| 71| 20| 0|.........| 0| 0.00| 0.0| 30.27| 30.10|30.177| 5.6| 5.5|199| 22|SSW| 2|200| | |05| 51.0 | 33.0 | 42.0 | 42.1 | 33| 73| 23| 0|.........| 0| 0.02| 0.0| 30.29| 30.13|30.215| 4.8| 4.2| 9| 21| NE| 4| 41| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 49.6 | 28.4 | 39.0 | 39.6 | 33| 77| 26| 0|1........| 0| 0.00| 0.0| 30.20| 29.87|30.060| 1.1| 0.4|169| 12|SSE| 0| 0| | |07| 41.8 | 28.7 | 35.3 | 37.4 | 23| 58| 29| 0|.........| 0| 0.00| 0.0| 30.30| 29.80|29.986| 7.1| 6.8|285| 39|WNW| 0| 0| | |08| 42.3 | 27.9 | 35.1 | 34.1 | 21| 59| 30| 0|.........| 0| 0.00| 0.0| 30.46| 30.30|30.399| 2.6| 1.1| 2| 15| NE| 0| 0| | |09| 62.1 | 33.7 | 47.9 | 50.1 | 43| 76| 17| 0|.........| 0| 0.00| 0.0| 30.43| 30.16|30.319| 3.5| 3.4|162| 22|SSE| 0| 0| | |10| 68.9 | 57.4 | 63.2 | 63.9 | 61| 90| 2| 0|1........| 0| 0.09| 0.0| 30.14| 29.94|30.035| 5.5| 5.3|192| 19|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 67.9 | 61.8 | 64.8 | 65.2 | 64| 97| 0| 0|1.3......| 0| 2.16| 0.0| 29.92| 29.47|29.765| 4.4| 4.2|182| 28| S| 0| 0| | |12| 64.9 | 38.8 | 51.8 | 49.8 | 43| 80| 13| 0|1........| 0| 0.13| 0.0| 30.12| 29.44|29.746| 8.2| 5.2|301| 24| NW| 0| 0| | |13| 39.6 | 31.4 | 35.5 | 36.3 | 26| 66| 29| 0|.........| 0| 0.00| 0.0| 30.51| 30.14|30.361| 4.3| 4.1|350| 19| N| 0| 0| | |14| 56.9 | 31.1 | 44.0 | 44.1 | 40| 84| 21| 0|.........| 0| 0.00| 0.0| 30.56| 30.42|30.495| 2.1| 2.0|145| 16| SE| 0| 0| | |15| 70.1 | 52.6 | 61.3 | 60.4 | 55| 82| 3| 0|.........| 0| 0.00| 0.0| 30.44| 30.30|30.371| 4.0| 3.9|185| 22| S| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 57.8 | 43.0 | 50.4 | 48.1 | 46| 94| 14| 0|12.......| 0| 0.02| 0.0| 30.44| 30.26|30.350| 6.3| 5.6| 30| 28| N| 0| 0| | |17| 59.0 | 44.6 | 51.8 | 51.8 | 51| 96| 13| 0|12.......| 0| 0.05| 0.0| 30.24| 30.09|30.164| 5.0| 3.8|222| 24|SSW| 0| 0| | |18| 56.2 | 46.5 | 51.3 | 48.8 | 45| 88| 13| 0|.........| 0| 0.00| 0.0| 30.33| 30.19|30.267| 4.7| 4.7| 45| 20| NE| 0| 0| | |19| 65.4 | 47.4 | 56.4 | 54.9 | 52| 90| 9| 0|1........| 0| T | 0.0| 30.25| 29.75|29.978| 5.8| 5.2|194| 25|SSW| 0| 0| | |20| 63.1 | 42.4 | 52.8 | 49.8 | 45| 85| 12| 0|1........| 0| 0.02| 0.0| 30.03| 29.80|29.945| 8.5| 6.1| 49| 23| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 53.0 | 36.0 | 44.5 | 44.9 | 40| 85| 20| 0|1........| 0| 0.79| 0.0| 29.90| 29.59|29.716| 5.5| 3.4|275| 25|WSW| 0| 0| | |22| 36.0 | 23.6 | 29.8*| 28.8 | 12| 49| 35| 0|.........| 0| 0.00| 0.0| 30.59| 29.86|30.251| 8.7| 8.1|276| 34|WNW| 0| 0| | |23| 38.7 | 23.2*| 31.0 | 31.5 | 22| 69| 34| 0|.........| 0| 0.00| 0.0| 30.73| 30.51|30.643| 2.5| 1.0| 33| 25|NNW| 0| 0| | |24| 66.1 | 34.8 | 50.4 | 53.1 | 49| 86| 14| 0|.........| 0| 0.00| 0.0| 30.48| 30.07|30.301| 5.4| 5.2|190| 29|SSW| 0| 0| | |25| 64.5 | 42.9 | 53.7 | 54.7 | 47| 76| 11| 0|.........| 0| 0.12| 0.0| 30.45| 30.04|30.251| 6.8| 0.9|266| 28|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 51.9 | 37.3 | 44.6 | 44.3 | 40| 85| 20| 0|.........| 0| 0.02| 0.0| 30.54| 30.42|30.482| 3.9| 3.9| 46| 17| NE| 0| 0| | |27| 62.4 | 47.3 | 54.8 | 54.1 | 52| 92| 10| 0|1........| 0| 0.00| 0.0| 30.40| 30.25|30.340| 0.7| 0.5|205| 11| SE| 0| 0| | |28| 74.6*| 57.5 | 66.1*| 65.9 | 61| 86| 0| 2|1........| 0| 0.03| 0.0| 30.22| 29.98|30.096| 8.4| 8.2|203| 32|SSW| 0| 0| | |29| 64.1 | 41.2 | 52.7 | 50.5 | 38| 64| 12| 0|.........| 0| 0.02| 0.0| 30.12| 29.93|30.049| 4.2| 2.2| 28| 21| NE| 0| 0| | |30| 57.6 | 40.3 | 48.9 | 47.3 | 32| 57| 16| 0|.........| 0| 0.00| 0.0| 30.03| 29.83|29.964| 4.0| 3.4|247| 19|WSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 56.8 | 28.8 | 42.8 | 44.6 | 29| 57| 22| 0|.........| 0| 0.00| 0.0| 30.21| 29.58|29.796|12.5| 8.6|280| 48|WNW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1750.0|1199.8|------|------|---|----| 534| 2| Days | 3.47| 0.0| 30.73| 29.44|30.151| 5.2| 1.4|249| 48|WNW| 4| 41| ---- | +------+------+------+------+---+----+----+----+------------|+0.39" or 113% or normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 56.5| 38.6| 47.6 | 47.4 | 40|77.0|----|----|>.01 Inch 13|44.26| T | 23 | 12 |------|----|----|---| 31 | 5 | | + +3.3 +2.8 +3.1 +------+---+----+----+----+------------|-3.53" or 93% 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 |1209|1759|Thunder 1|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 2| 2.16| 11 | 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 9 | 0 |----|----| Clear 7 Partly Cloudy 14 Cloudy 10 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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:
    FROST:  3rd, 4th, 5th, 6th, 13th, 14th, 22nd, 23rd
FROPA: 5th, 7th, 13th,16th,17th,19th (WARMFROPA), 20th,
21st (WARMNFROPA), 21st, 25th,29th
STATION RECORDS:
11th - TEMPERATURE Maximum Minimum 62 [previous 53 2001]
11th - RAINFALL 2.16" [prev 1.36" 2001]
15th- TEMPERATURE Maximum Minimum 53 [prev 52 1984]
21st - RAINFALL 0.79" [prev 0.55" 1977]
22nd - WIND GUST 34 mph [prev 33mph 1989]
27th - TEMPERATURE Maximum 62 [prev 58 1982]
31st - WIND GUST 48mph [prev 37mph 1989] MONTHLY AVERAGE MAXIMUM TEMP OF 56.5 WAS 3.3 ABOVE NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 38.6 WAS 2.8 ABOVE NORMAL. MONTHLY AVERAGE TEMP OF 47.6 WAS 3.1 ABOVE NORMAL. MAXIMUM TEMP: 75 ON THE 28TH MINIMUM TEMP: 23 ON THE 23RD DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 0 MINIMUM <= 32: 9 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 541.5 COOLING DEGREE DAYS: 1.0 DAYS WITH HEATING DEGREE DAYS: 29 DAYS WITH COOLING DEGREE DAYS: 1 PRECIP TOTAL OF 3.47" WAS 0.39" ABOVE NORMAL (113% OF NORMAL). GREATEST DAILY RAINFALL: 2.16" ON THE 11TH GREATEST 24-HOUR RAINFALL: 2.16" ON THE 11TH DAYS WITH MEASUREABLE PRECIP: 12 OR 38.71% AVERAGE DAILY PRECIP: 0.11" NORMAL DAILY PRECIP: 0.10" DAYS WITH PRECIP >= 0.01" 12 DAYS WITH PRECIP >= 0.10" 4 DAYS WITH PRECIP >= 0.50" 2 DAYS WITH PRECIP >= 1.00" 1 DAYS WITH THUNDERSTORMS: 1 NUMBER OF THUNDERSTORMS: 1 DAYS WITH SNOW: 00 SNOWFALL TOTAL: 0.0" CLOUDY DAYS: 10 PARTLY CLOUDY DAYS: 14 SUNNY/CLEAR DAYS: 7 DAYS WITH F/GF: 11 DAYS WITH DENSE FOG: 2 DAYS WITH FROST: 8 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 70.4 WAS 0.8 ABOVE NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 52.0 WAS 0.6 ABOVE NORMAL. YEARLY AVERAGE TEMP OF 61.2 WAS 0.7 ABOVE NORMAL. MAXIMUM TEMP: 101 ON JUNE 10TH MINIMUM TEMP: 19 ON JANUARY 4TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 46 MAXIMUM <= 32: 2 MINIMUM <= 32: 43 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 3093.0 COOLING DEGREE DAYS: 1709.0 DAYS WITH HEATING DEGREE DAYS: 199 DAYS WITH COOLING DEGREE DAYS: 160 PRECIP TOTAL OF 44.26" WAS 3.64" BELOW NORMAL ( 92% OF NORMAL). GREATEST DAILY RAINFALL: 3.03" ON SEPTEMBER 25TH GREATEST 24-HOUR RAINFALL: 3.24" ON SEPTEMBER 25TH-26TH DAYS WITH MEASUREABLE PRECIP: 120 OF 366 OR 32.79% AVERAGE DAILY PRECIP: 0.12" NORMAL DAILY PRECIP: 0.13" DAYS WITH PRECIP >= 0.01" 120 DAYS WITH PRECIP >= 0.10" 69 DAYS WITH PRECIP >= 0.50" 29 DAYS WITH PRECIP >= 1.00" 12 DAYS WITH THUNDERSTORMS: 30 NUMBER OF THUNDERSTORMS: 33 DAYS WITH SNOW: 07 SNOWFALL TOTAL: 0.4" CLOUDY DAYS: 62 PARTLY CLOUDY DAYS: 182 SUNNY/CLEAR DAYS: 122 DAYS WITH F/GF: 117 DAYS WITH DENSE FOG: 6 DAYS WITH FROST: 27
OBSERVATIONS AT 3-HOUR INTERVALS
December 2008: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 1 | DEC 2 | DEC 3 | | | | | |01| |29.46| 0.00| 58| 57| 96|20| 12| 23| |30.03| 0.00| 41| 32| 70|20| 7| 19| |30.26| 0.00| 32| 28| 84|24| 0| 4| |04| |29.55| 0.00| 53| 46| 78|20| 7| 20| |30.07| 0.00| 38| 31| 74|24| 5| 17| |30.30| 0.00| 31| 27| 86|24| 0| 4| |07| |29.64| 0.00| 47| 41| 82|20| 6| 15| |30.12| 0.00| 37| 32| 80|22| 0| 5| |30.35| 0.00| 29| 26| 89|00| 0| 0| |10| |29.67| 0.00| 52| 46| 79|20| 7| 20| |30.18| 0.00| 40| 33| 76|20| 4| 11| |30.38| 0.00| 38| 31| 74|24| 4| 10| |13| |29.65| 0.00| 58| 41| 54|20| 15| 31| |30.15| 0.00| 44| 35| 71|20| 4| 10| |30.31| 0.00| 47| 31| 53|24| 5| 16| |16| |29.75| 0.00| 52| 36| 54|20| 14| 31| |30.15| 0.00| 45| 32| 62|24| 5| 12| |30.29| 0.00| 48| 32| 54|20| 4| 11| |19| |29.90| 0.00| 47| 35| 63|20| 10| 19| |30.21| 0.00| 41| 33| 72|27| 0| 5| |30.30| 0.00| 41| 31| 68|18| 0| 5| |22| |29.98| 0.00| 44| 32| 63|20| 11| 23| |30.26| 0.00| 36| 31| 80|24| 0| 5| |30.31| 0.00| 38| 31| 76|18| 4| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 4 | DEC 5 | DEC 6 | | | | | |01| |30.27| 0.00| 36| 31| 83|18| 0| 6| |30.15| 0.00| 51| 41| 70|33| 5| 12| |30.20| 0.00| 32| 28| 85|00| 0| 0| |04| |30.22| 0.00| 35| 31| 87|18| 4| 10| |30.20| 0.01| 42| 40| 90|04| 10| 21| |30.17| 0.00| 30| 27| 88|00| 0| 0| |07| |30.23| 0.00| 35| 31| 86|20| 5| 11| |30.25| 0.00| 42| 35| 77|00| 6| 16| |30.16| 0.00| 29| 26| 89|00| 0| 0| |10| |30.23| 0.00| 45| 35| 69|20| 10| 18| |30.29| 0.00| 42| 32| 67|00| 10| 19| |30.16| 0.00| 40| 33| 78|15| 0| 6| |13| |30.14| 0.00| 54| 39| 56|20| 11| 21| |30.23| 0.00| 43| 32| 67|04| 10| 19| |30.04| 0.00| 49| 35| 60|15| 4| 10| |16| |30.12| 0.00| 53| 38| 55|20| 10| 18| |30.21| 0.00| 42| 30| 62|04| 4| 11| |29.98| 0.00| 49| 37| 64|15| 0| 10| |19| |30.14| 0.00| 48| 36| 63|18| 4| 10| |30.22| 0.00| 41| 31| 67|04| 0| 5| |29.97| 0.00| 45| 37| 72|31| 4| 10| |22| |30.14| 0.00| 49| 40| 70|20| 5| 11| |30.22| 0.00| 35| 29| 79|00| 0| 0| |29.90| 0.00| 44| 38| 81|31| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 7 | DEC 8 | DEC 9 | | | | | |01| |29.82| 0.00| 42| 36| 82|24| 0| 5| |30.30| 0.00| 28| 14| 56|27| 0| 5| |30.43| 0.00| 37| 29| 72|13| 0| 7| |04| |29.80| 0.00| 38| 34| 87|24| 7| 17| |30.33| 0.00| 28| 15| 58|33| 0| 10| |30.41| 0.00| 34| 27| 76|13| 0| 4| |07| |29.84| 0.00| 35| 29| 78|27| 5| 15| |30.39| 0.00| 29| 16| 58|00| 4| 11| |30.41| 0.00| 38| 31| 77|13| 0| 11| |10| |29.95| 0.00| 39| 26| 58|29| 11| 27| |30.44| 0.00| 34| 20| 56|04| 6| 15| |30.40| 0.00| 53| 45| 74|15| 4| 16| |13| |29.97| 0.00| 41| 23| 49|29| 13| 39| |30.41| 0.00| 38| 23| 53|24| 4| 10| |30.29| 0.00| 62| 50| 65|18| 6| 18| |16| |30.06| 0.00| 39| 16| 38|29| 11| 27| |30.40| 0.00| 41| 22| 45|18| 4| 11| |30.23| 0.00| 61| 53| 75|15| 6| 20| |19| |30.17| 0.00| 35| 14| 42|29| 5| 15| |30.44| 0.00| 37| 26| 65|09| 0| 5| |30.23| 0.00| 59| 53| 81|18| 5| 17| |22| |30.24| 0.00| 32| 12| 44|31| 5| 17| |30.44| 0.00| 35| 27| 73|13| 0| 7| |30.20| 0.00| 58| 54| 86|15| 5| 17| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 10 | DEC 11 | DEC 12 | | | | | |01| |30.14| 0.00| 59| 55| 87|18| 5| 16| |29.91| 0.25| 66| 64| 95|18| 5| 16| |29.48| 0.10| 59| 57| 94|20| 10| 22| |04| |30.10| 0.00| 61| 56| 85|15| 5| 14| |29.90| 0.16| 64| 63| 96|24| 4| 10| |29.44| 0.00| 58| 57| 96|20| 6| 17| |07| |30.08| 0.00| 63| 59| 88|18| 6| 18| |29.90| 0.02| 62| 61| 97|00| 0| 0| |29.50| 0.01| 56| 55| 94|20| 7| 18| |10| |30.08| 0.03| 63| 62| 96|20| 5| 15| |29.88| 0.08| 62| 62| 97|15| 0| 7| |29.73| 0.00| 45| 41| 84|29| 11| 23| |13| |30.02| 0.00| 68| 65| 90|20| 7| 16| |29.77| 0.00| 67| 67| 98|18| 5| 16| |29.78| 0.00| 49| 41| 73|31| 12| 22| |16| |29.98| 0.00| 68| 64| 86|20| 6| 18| |29.68| 0.08| 67| 66| 97|18| 5| 21| |29.87| 0.00| 49| 37| 62|33| 10| 19| |19| |29.95| 0.00| 65| 63| 93|18| 5| 14| |29.60| 0.23| 67| 67| 98|18| 7| 24| |29.98| 0.00| 44| 34| 69|00| 7| 20| |22| |29.97| 0.00| 66| 64| 95|20| 5| 16| |29.53| 0.20| 66| 66| 97|18| 12| 28| |30.08| 0.00| 41| 31| 69|33| 5| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 13 | DEC 14 | DEC 15 | | | | | |01| |30.14| 0.00| 39| 27| 63|00| 10| 19| |30.51| 0.00| 31| 28| 87|00| 0| 0| |30.42| 0.00| 54| 49| 84|15| 4| 10| |04| |30.23| 0.00| 37| 25| 62|00| 7| 18| |30.52| 0.00| 33| 29| 88|04| 0| 4| |30.42| 0.00| 53| 49| 86|15| 0| 10| |07| |30.29| 0.00| 34| 25| 71|33| 0| 6| |30.54| 0.00| 33| 29| 87|00| 0| 0| |30.42| 0.00| 53| 49| 88|20| 0| 4| |10| |30.39| 0.00| 36| 24| 62|00| 10| 17| |30.56| 0.00| 43| 37| 80|13| 4| 11| |30.43| 0.00| 62| 56| 82|18| 4| 11| |13| |30.39| 0.00| 39| 25| 56|00| 6| 16| |30.49| 0.00| 54| 46| 73|15| 4| 11| |30.36| 0.00| 70| 60| 72|18| 7| 22| |16| |30.40| 0.00| 40| 25| 55|00| 4| 10| |30.45| 0.00| 56| 49| 78|13| 4| 11| |30.31| 0.00| 69| 58| 69|18| 7| 20| |19| |30.48| 0.00| 35| 28| 75|00| 0| 0| |30.46| 0.00| 51| 48| 90|13| 4| 16| |30.32| 0.00| 64| 59| 84|18| 6| 16| |22| |30.50| 0.00| 32| 28| 83|00| 0| 0| |30.44| 0.00| 51| 48| 87|13| 4| 12| |30.32| 0.00| 60| 57| 90|20| 5| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 16 | DEC 17 | DEC 18 | | | | | |01| |30.28| 0.00| 57| 55| 93|13| 0| 7| |30.24| 0.00| 45| 44| 96|00| 5| 11| |30.19| 0.00| 54| 53| 98|04| 5| 12| |04| |30.29| 0.00| 56| 55| 96|20| 0| 7| |30.19| 0.00| 45| 44| 96|33| 0| 5| |30.24| 0.00| 49| 47| 90|04| 10| 19| |07| |30.38| 0.00| 49| 46| 89|00| 10| 28| |30.21| 0.00| 45| 44| 96|27| 4| 7| |30.28| 0.00| 49| 46| 91|04| 7| 17| |10| |30.44| 0.00| 45| 43| 93|00| 12| 24| |30.18| 0.00| 49| 48| 99|20| 6| 12| |30.33| 0.00| 49| 44| 85|04| 10| 17| |13| |30.39| 0.00| 43| 41| 93|04| 10| 19| |30.10| 0.00| 58| 56| 94|20| 10| 22| |30.30| 0.00| 49| 44| 83|04| 6| 15| |16| |30.35| 0.00| 44| 43| 95|04| 7| 18| |30.12| 0.00| 59| 57| 93|20| 7| 18| |30.27| 0.00| 47| 42| 84|04| 5| 13| |19| |30.35| 0.00| 45| 43| 95|04| 6| 17| |30.16| 0.00| 58| 57| 96|20| 5| 15| |30.27| 0.00| 47| 43| 87|06| 0| 6| |22| |30.30| 0.00| 46| 45| 96|04| 7| 17| |30.17| 0.02| 58| 57| 98|24| 4| 12| |30.26| 0.00| 47| 43| 85|06| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.04 | 0.07 | 0.10 | 0.13 | 0.19 | 0.28 | 0.37 | 0.44 | 0.52 | 0.60 | 0.63 | 0.67 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1705 | 1710 | 1715 | 1720 | 1730 | 1745 | 1800 | 1818 | 1839 | 1900 | 1925 | 2000 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
December 2008: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 19 | DEC 20 | DEC 21 | | | | | |01| |30.25| 0.00| 48| 44| 86|04| 0| 6| |29.80| 0.00| 62| 58| 87|20| 10| 20| |29.90| 0.05| 44| 43| 96|04| 5| 14| |04| |30.20| 0.00| 48| 44| 89|06| 0| 6| |29.84| 0.00| 59| 56| 90|20| 5| 17| |29.77| 0.03| 45| 45| 98|04| 4| 10| |07| |30.16| 0.00| 48| 47| 94|09| 0| 6| |29.92| 0.00| 51| 49| 95|04| 6| 14| |29.66| 0.03| 47| 47| 99|13| 0| 10| |10| |30.09| 0.00| 52| 49| 92|15| 4| 15| |30.00| 0.00| 50| 46| 87|04| 7| 18| |29.62| 0.32| 46| 45| 96|29| 7| 21| |13| |29.91| 0.00| 56| 54| 94|18| 5| 17| |29.97| 0.00| 47| 40| 77|04| 12| 21| |29.63| 0.00| 44| 42| 94|29| 10| 19| |16| |29.77| 0.00| 61| 59| 95|20| 11| 22| |30.00| 0.00| 44| 39| 80|04| 11| 19| |29.67| 0.00| 49| 41| 76|24| 10| 22| |19| |29.76| 0.00| 64| 61| 88|20| 10| 18| |30.00| 0.00| 44| 39| 84|04| 10| 20| |29.76| 0.00| 45| 41| 85|27| 5| 16| |22| |29.77| 0.00| 65| 59| 83|20| 13| 23| |29.99| 0.00| 43| 39| 88|04| 6| 17| |29.80| 0.00| 39| 24| 56|24| 7| 21| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 22 | DEC 23 | DEC 24 | | | | | |01| |29.86| 0.00| 35| 15| 44|29| 13| 32| |30.59| 0.00| 23| 15| 69|24| 0| 5| |30.48| 0.00| 36| 33| 88|15| 0| 5| |04| |29.99| 0.00| 30| 11| 45|29| 13| 29| |30.64| 0.00| 26| 18| 70|33| 5| 25| |30.45| 0.00| 36| 33| 90|15| 0| 4| |07| |30.14| 0.00| 25| 8| 47|29| 11| 28| |30.67| 0.00| 26| 18| 72|00| 4| 10| |30.41| 0.00| 44| 42| 94|15| 4| 11| |10| |30.27| 0.00| 26| 9| 47|24| 12| 29| |30.73| 0.00| 30| 22| 71|04| 4| 12| |30.39| 0.00| 57| 52| 84|18| 5| 15| |13| |30.28| 0.00| 30| 12| 46|24| 11| 24| |30.67| 0.00| 36| 20| 53|15| 4| 11| |30.29| 0.00| 65| 56| 74|18| 7| 20| |16| |30.35| 0.00| 31| 11| 44|29| 10| 21| |30.63| 0.00| 39| 26| 59|15| 4| 12| |30.19| 0.00| 65| 57| 77|20| 10| 26| |19| |30.46| 0.00| 28| 13| 51|27| 4| 11| |30.63| 0.00| 35| 28| 74|15| 0| 5| |30.17| 0.00| 60| 57| 90|18| 7| 18| |22| |30.53| 0.00| 26| 15| 62|24| 0| 7| |30.58| 0.00| 36| 31| 82|15| 0| 6| |30.09| 0.00| 63| 60| 88|20| 12| 27| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 25 | DEC 26 | DEC 27 | | | | | |01| |30.04| 0.00| 64| 60| 89|20| 13| 27| |30.45| 0.00| 42| 36| 79|04| 5| 15| |30.40| 0.00| 49| 46| 90|06| 0| 4| |04| |30.08| 0.02| 63| 61| 96|20| 10| 17| |30.48| 0.00| 39| 34| 82|04| 4| 12| |30.39| 0.00| 48| 46| 93|31| 0| 7| |07| |30.17| 0.00| 59| 57| 93|24| 6| 16| |30.50| 0.00| 38| 34| 87|04| 0| 5| |30.40| 0.00| 47| 46| 94|31| 0| 6| |10| |30.25| 0.00| 58| 49| 72|31| 5| 11| |30.52| 0.00| 45| 40| 82|04| 7| 16| |30.39| 0.00| 50| 49| 95|22| 0| 7| |13| |30.26| 0.01| 54| 40| 59|04| 7| 17| |30.48| 0.00| 51| 44| 77|04| 5| 13| |30.32| 0.00| 58| 55| 90|18| 0| 7| |16| |30.31| 0.00| 50| 37| 60|04| 7| 16| |30.48| 0.01| 46| 42| 87|04| 6| 15| |30.28| 0.00| 62| 59| 88|18| 0| 7| |19| |30.39| 0.00| 45| 38| 76|02| 0| 4| |30.48| 0.00| 45| 43| 93|04| 4| 7| |30.29| 0.00| 59| 57| 93|20| 0| 6| |22| |30.43| 0.00| 44| 35| 69|04| 6| 15| |30.45| 0.00| 47| 45| 92|06| 0| 7| |30.27| 0.00| 58| 57| 95|18| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 28 | DEC 29 | DEC 30 | | | | | |01| |30.22| 0.00| 58| 57| 96|18| 4| 7| |30.05| 0.01| 63| 57| 80|24| 4| 10| |29.93| 0.00| 42| 33| 70|20| 5| 10| |04| |30.19| 0.00| 60| 59| 99|20| 6| 15| |30.07| 0.00| 55| 40| 57|04| 5| 16| |29.95| 0.00| 41| 31| 66|24| 6| 16| |07| |30.18| 0.00| 62| 62|100|20| 10| 19| |30.11| 0.01| 50| 39| 67|04| 5| 15| |30.01| 0.00| 40| 30| 65|24| 5| 12| |10| |30.14| 0.00| 67| 64| 91|20| 11| 23| |30.12| 0.00| 49| 35| 59|04| 7| 21| |30.03| 0.00| 49| 33| 54|24| 6| 16| |13| |30.02| 0.00| 73| 63| 70|20| 15| 31| |30.04| 0.00| 50| 35| 57|00| 5| 12| |29.97| 0.00| 57| 33| 41|24| 6| 19| |16| |29.98| 0.00| 73| 61| 66|20| 13| 29| |30.01| 0.00| 51| 36| 57|33| 0| 7| |29.98| 0.00| 56| 34| 44|00| 4| 6| |19| |30.03| 0.00| 70| 63| 78|20| 7| 15| |30.02| 0.00| 45| 37| 72|29| 0| 4| |29.97| 0.00| 49| 32| 53|00| 0| 0| |22| |30.04| 0.00| 65| 63| 94|20| 4| 10| |29.98| 0.00| 42| 38| 87|22| 4| 7| |29.90| 0.00| 44| 33| 65|18| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 31 | | | | | | | |01| |29.78| 0.00| 44| 38| 78|20| 4| 10| | | |04| |29.63| 0.00| 45| 39| 78|20| 6| 18| | | |07| |29.58| 0.00| 47| 39| 76|20| 10| 20| | | |10| |29.60| 0.00| 54| 39| 58|24| 13| 28| | | |13| |29.70| 0.00| 51| 27| 39|29| 17| 45| | | |16| |29.88| 0.00| 43| 23| 44|29| 17| 34| | | |19| |30.03| 0.00| 37| 20| 49|31| 15| 29| | | |22| |30.16| 0.00| 32| 14| 47|33| 14| 24| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |30.106| 46| 41| 82| 4.2| 21 | 1.7| |04| |30.102| 45| 39| 83| 4.3| 23 | 1.2| |07| |30.122| 44| 39| 83| 4.3| 24 | 1.4| |10| |30.153| 48| 40| 76| 7.0| 27 | 2.1| |13| |30.113| 52| 40| 67| 8.4| 25 | 2.7| |16| |30.118| 51| 40| 66| 7.6| 25 | 2.5| |19| |30.157| 48| 40| 75| 4.8| 26 | 1.4| |22| |30.169| 46| 39| 77| 5.0| 24 | 1.3| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
December 2008: 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| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | |0.01|0.01| | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | |0.01|0.03|0.03|0.02| | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| |0.25|0.25|0.08|0.16|0.11|0.05|0.02| |0.01|0.08|0.02| | |0.01|0.02|0.08|0.03|0.36|0.23|0.07|0.09|0.20|0.04|11 12| |0.10| |0.01| | | |0.01|0.01| | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | |0.01| | | | | | | | | | | | |0.01| | |16 17| | | | | | |0.01| | | | | | | | | | | | | | |0.01|0.02|0.01|17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | |0.02|20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| |0.05|0.06|0.10|0.03|0.04|0.12|0.03|0.02| |0.32|0.02| | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | |0.01|0.02|0.08| | | | | | | |0.01| | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | |0.01|0.01| | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | |0.03| | |28 29| |0.01| | | | | |0.01| | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.41|0.31|0.21|0.22|0.23|0.18|0.07|0.05|0.04|0.43|0.06|0.00|0.01|0.03|0.02|0.09|0.04|0.36|0.23|0.07|0.14|0.22|0.07|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.)