LOCAL CLIMATOLOGICAL DATA Monthly Summary
December 2007
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| 49.2 | 30.8 | 40.0 | 40.5 | 27| 61| 25| 0|.........| 0| 0.00| 0.0| 30.54| 30.29|30.413| 4.4| 4.0| 22| 20|NNW| 5| 16| | |02| 59.5 | 40.1 | 49.8 | 49.3 | 41| 73| 15| 0|.........| 0| 0.03| 0.0| 30.48| 29.87|30.257| 2.6| 1.8|146| 15| S| 0| 0| | |03| 63.8 | 37.0 | 50.4 | 53.6 | 41| 66| 14| 0|.........| 0| 0.08| 0.0| 29.93| 29.58|29.793|10.8| 8.0|260| 33|WNW| 4|217| | |04| 44.4 | 33.5 | 39.0 | 38.7 | 22| 51| 26| 0|.........| 0| 0.00| 0.0| 29.91| 29.76|29.842| 7.9| 7.6|255| 31|WSW| 4|263| | |05| 47.4 | 29.7 | 38.6 | 39.1 | 31| 71| 26| 0|.........| 0| T | 0.0| 29.86| 29.63|29.754| 1.9| 0.2|359| 19|NNW| 2| 51| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 40.4 | 27.1 | 33.8*| 33.4 | 25| 71| 31| 0|.........| 0| 0.00| 0.0| 30.41| 29.92|30.253| 7.9| 7.1|359| 32|NNW| 6|328| | |07| 50.4 | 27.1 | 38.8 | 40.6 | 33| 72| 26| 0|.........| 0| T | 0.0| 30.40| 30.26|30.324| 1.8| 1.5|215| 12| W| 0|347| | |08| 59.8 | 43.6 | 51.7 | 49.4 | 40| 71| 13| 0|.........| 0| 0.00| 0.0| 30.39| 30.17|30.286| 3.9| 0.4|358| 16|WSW| 0|191| | |09| 68.0 | 43.3 | 55.7 | 55.4 | 50| 82| 9| 0|.........| 0| 0.00| 0.0| 30.42| 30.25|30.331| 1.8| 1.1|127| 11|ENE| 2| 45| | |10| 76.8*| 53.8 | 65.3*| 66.6 | 59| 78| 0| 1|.........| 0| 0.00| 0.0| 30.24| 30.12|30.202| 6.3| 5.8|207| 22|SSW| 5|193| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 59.2 | 49.8 | 54.5 | 53.8 | 51| 91| 10| 0|1........| 0| T | 0.0| 30.38| 30.15|30.276| 3.7| 1.1| 68| 16| N| 2| 47| | |12| 76.2 | 53.2 | 64.7 | 63.6 | 56| 79| 0| 0|1........| 0| 0.00| 0.0| 30.22| 29.94|30.083| 9.8| 5.9|229| 29| N| 7|196| | |13| 67.0 | 50.8 | 58.9 | 56.8 | 50| 77| 6| 0|1........| 0| T | 0.0| 30.23| 29.91|30.073| 5.8| 1.6| 87| 27|NNW| 1|100| | |14| 57.2 | 45.6 | 51.4 | 51.5 | 47| 85| 13| 0|1........| 0| 0.00| 0.0| 30.28| 30.01|30.153| 3.7| 3.4| 39| 15| NE| 1| 21| | |15| 56.8 | 39.1 | 47.9 | 44.2 | 38| 79| 17| 0|1........| 0| 0.64| 0.0| 30.35| 29.72|30.211| 7.8| 7.7| 52| 23| NE| 8| 53| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 63.6 | 37.5 | 50.5 | 52.2 | 45| 79| 14| 0|1........| 0| 1.39| 0.0| 29.78| 29.26|29.517|11.0|10.0|236| 47|WSW| 8|210| | |17| 41.2 | 28.2 | 34.7 | 35.8 | 21| 55| 30| 0|.........| 0| 0.00| 0.0| 30.30| 29.81|30.085| 7.9| 7.3|266| 27|WSW| 8|246| | |18| 42.1 | 26.9*| 34.5 | 35.1 | 24| 63| 30| 0|.........| 0| 0.00| 0.0| 30.46| 30.28|30.379| 3.3| 2.5|349| 15|NNW| 2|342| | |19| 51.1 | 32.4 | 41.8 | 40.1 | 32| 75| 23| 0|.........| 0| 0.01| 0.0| 30.33| 30.11|30.205| 4.3| 4.3|203| 22|SSW| 0|148| | |20| 46.3 | 29.3 | 37.8 | 37.4 | 31| 80| 27| 0|1........| 0| 0.00| 0.0| 30.24| 30.07|30.190| 2.3| 1.7| 62| 18|ENE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 49.5 | 33.8 | 41.7 | 45.4 | 39| 79| 23| 0|1........| 0| 0.00| 0.0| 30.27| 30.09|30.218| 6.7| 6.5| 46| 25| NE| 3| 58| | |22| 55.3 | 48.7 | 52.0 | 51.0 | 47| 86| 13| 0|1........| 0| T | 0.0| 30.38| 30.24|30.323| 7.7| 7.7| 46| 28| NE| 8| 55| | |23| 67.7 | 50.8 | 59.3 | 59.5 | 58| 93| 5| 0|1........| 0| 0.16| 0.0| 30.23| 29.86|30.028| 5.5| 4.8|180| 27|SSW| 3|141| | |24| 56.8 | 39.8 | 48.3 | 47.4 | 33| 58| 16| 0|.........| 0| 0.00| 0.0| 30.17| 29.94|30.070| 5.4| 5.3|246| 24|WSW| 1|274| | |25| 49.2 | 34.5 | 41.8 | 43.2 | 33| 68| 23| 0|.........| 0| 0.00| 0.0| 30.32| 30.17|30.241| 4.5| 3.3| 47| 23| NE| 9| 56| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 46.3 | 39.6 | 42.9 | 43.3 | 40| 89| 22| 0|1........| 0| 1.06| 0.0| 30.18| 29.82|29.963| 7.9| 6.8| 18| 29|NNE| 10|357| | |27| 55.9 | 39.1 | 47.5 | 45.2 | 41| 86| 17| 0|1........| 0| 0.00| 0.0| 30.21| 29.97|30.077| 3.5| 3.2|229| 23|WSW| 0| 0| | |28| 58.3 | 35.5 | 46.9 | 48.4 | 45| 87| 18| 0|1........| 0| 0.01| 0.0| 30.31| 30.07|30.227| 3.1| 2.6|123| 16|ESE| 0| 0| | |29| 73.3 | 51.5 | 62.4 | 60.6 | 57| 88| 2| 0|1........| 0| 0.02| 0.0| 30.09| 29.88|29.997| 7.0| 2.3|188| 24|SSW| 8|198| | |30| 51.5 | 45.8 | 48.7 | 48.2 | 45| 90| 16| 0|1........| 0| 0.17| 0.0| 30.15| 29.78|30.010| 5.4| 4.7| 54| 20| NE| 5| 50| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 53.2 | 40.0 | 46.6 | 46.5 | 41| 83| 18| 0|1........| 0| 0.02| 0.0| 30.17| 29.77|30.040| 4.4| 2.4|256| 24|WNW| 3|247| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1737.4|1217.9|------|------|---|----| 528| 1| Days | 3.59| 0.0| 30.54| 29.26|30.123| 5.5| 0.5|286| 47|WSW| 10|357| ---- | +------+------+------+------+---+----+----+----+------------ +0.52" or 117% +------+------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 56.0| 39.3| 47.6 | 47.6 | 40|76.4|----|----|>.01 Inch 11|33.59| 0.0| 1 | 16 |------|----|----|---| 16 | 26 | | + +2.9 +3.6 +3.2 ------+---+----+----+----+------------+ -13.83" or 71% --+------+------+----+----+---+-------+-------+------+ | | 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 |1014|1753|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 2.03| 15-16| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 8 | 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:
    Station Records:
6th - TEMPERATURE - MINIMUM - TIED 27 [previous 1992]
6th - TEMPERATURE - MAXIMUM - TIED 40 [previous 1997]
10th - TEMPERATURE - MAXIMUM 77 [previous 72 1987]
12th - TEMPERATURE - MAXIMUM 76 [previous 69 1979]
16th - RAINFALL - 1.39" [previous 0.24" 2000]
16th - WIND 47 mph [previous 44 mph 1989]
26th - RAINFALL - 1.06" [previous 0.80" 2004] MONTHLY AVERAGE MAXIMUM TEMP OF 56.0 WAS 2.9 ABOVE NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 39.3 WAS 3.6 ABOVE NORMAL. MONTHLY AVERAGE TEMP OF 47.6 WAS 3.2 ABOVE NORMAL. MAXIMUM TEMP: 77 ON THE 10TH MINIMUM TEMP: 27 ON THE 6TH, 7TH, AND 18TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 0 MINIMUM <= 32: 8 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 539.0 COOLING DEGREE DAYS: 0.5 DAYS WITH HEATING DEGREE DAYS: 30 DAYS WITH COOLING DEGREE DAYS: 1 PRECIP TOTAL OF 3.59" WAS 0.52" ABOVE NORMAL ( 117% OF NORMAL). GREATEST DAILY RAINFALL: 1.39" ON THE 16TH GREATEST 24-HOUR RAINFALL: 2.03" ON THE 15-16TH DAYS WITH MEASUREABLE PRECIP: 11 OR 36.67% AVERAGE DAILY PRECIP: 0.12" NORMAL DAILY PRECIP: 0.10" DAYS WITH PRECIP >= 0.01" 11 DAYS WITH PRECIP >= 0.10" 5 DAYS WITH PRECIP >= 0.50" 3 DAYS WITH PRECIP >= 1.00" 2 DAYS WITH THUNDERSTORMS: 0 NUMBER OF THUNDERSTORMS: 0 DAYS WITH SNOW: 00 SNOWFALL TOTAL: 0.0" CLOUDY DAYS: 10 PARTLY CLOUDY DAYS: 14 SUNNY/CLEAR DAYS: 7 DAYS WITH F/GF: 16 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 4 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 70.6 WAS 1.0 ABOVE NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 52.0 WAS 0.6 ABOVE NORMAL. YEARLY AVERAGE TEMP OF 61.3 WAS 0.8 ABOVE NORMAL. MAXIMUM TEMP: 98 ON AUGUST 9TH MINIMUM TEMP: 15 ON FEBRUARY 6TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 32 MAXIMUM <= 32: 1 MINIMUM <= 32: 51 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 3125.5 COOLING DEGREE DAYS: 1770.0 DAYS WITH HEATING DEGREE DAYS: 192 DAYS WITH COOLING DEGREE DAYS: 169 PRECIP TOTAL OF 34.11" WAS 13.75" BELOW NORMAL ( 71% OF NORMAL). GREATEST DAILY RAINFALL: 1.75" ON AUGUST 21ST GREATEST 24-HOUR RAINFALL: 2.69" ON OCTOBER 24-25TH DAYS WITH MEASUREABLE PRECIP: 100 OF 365 OR 27.40% AVERAGE DAILY PRECIP: 0.09" NORMAL DAILY PRECIP: 0.13" DAYS WITH PRECIP >= 0.01" 100 DAYS WITH PRECIP >= 0.10" 61 DAYS WITH PRECIP >= 0.50" 22 DAYS WITH PRECIP >= 1.00" 13 DAYS WITH THUNDERSTORMS: 27 NUMBER OF THUNDERSTORMS: 31 DAYS WITH SNOW: 02 SNOWFALL TOTAL: 0.4" CLOUDY DAYS: 49 PARTLY CLOUDY DAYS: 169 SUNNY/CLEAR DAYS: 147 DAYS WITH F/GF: 109 DAYS WITH DENSE FOG: 1 DAYS WITH FROST: 20
OBSERVATIONS AT 3-HOUR INTERVALS
December 2007: 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| |30.29| 0.00| 34| 28| 76|02| 0| 5| |30.48| 0.00| 42| 29| 61|04| 5| 11| |29.83| 0.02| 55| 54| 95|18| 10| 19| |04| |30.30| 0.00| 33| 28| 82|04| 0| 5| |30.42| 0.00| 42| 33| 71|06| 0| 6| |29.74| 0.03| 58| 56| 95|20| 11| 19| |07| |30.38| 0.00| 31| 27| 85|15| 0| 5| |30.43| 0.00| 40| 34| 79|00| 0| 0| |29.72| 0.00| 57| 55| 92|20| 7| 19| |10| |30.45| 0.00| 47| 30| 51|00| 10| 19| |30.40| 0.00| 48| 41| 77|15| 4| 11| |29.71| 0.00| 62| 52| 72|24| 12| 30| |13| |30.44| 0.00| 49| 23| 36|00| 10| 20| |30.26| 0.00| 56| 44| 65|15| 4| 11| |29.74| 0.00| 59| 37| 44|29| 14| 32| |16| |30.43| 0.00| 46| 26| 46|04| 7| 17| |30.16| 0.00| 59| 46| 61|18| 4| 10| |29.82| 0.00| 52| 30| 43|29| 12| 26| |19| |30.50| 0.00| 43| 28| 56|04| 6| 17| |30.08| 0.00| 56| 48| 74|13| 0| 10| |29.91| 0.00| 45| 25| 45|29| 12| 25| |22| |30.51| 0.00| 42| 22| 46|04| 7| 17| |29.97| 0.02| 52| 49| 91|18| 4| 10| |29.92| 0.00| 39| 23| 53|24| 10| 23| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 4 | DEC 5 | DEC 6 | | | | | |01| |29.91| 0.00| 36| 22| 57|24| 10| 18| |29.85| 0.00| 31| 22| 68|24| 0| 6| |29.92| 0.00| 38| 33| 81|00| 14| 27| |04| |29.86| 0.00| 35| 21| 55|29| 6| 15| |29.83| 0.00| 30| 24| 77|00| 0| 0| |30.07| 0.00| 33| 27| 76|33| 13| 25| |07| |29.87| 0.00| 35| 20| 54|29| 5| 14| |29.82| 0.00| 33| 27| 78|00| 0| 5| |30.20| 0.00| 32| 25| 74|33| 12| 23| |10| |29.87| 0.00| 39| 22| 50|24| 13| 31| |29.80| 0.00| 41| 32| 70|13| 4| 12| |30.28| 0.00| 33| 25| 70|00| 11| 21| |13| |29.81| 0.00| 43| 23| 45|24| 12| 26| |29.71| 0.00| 47| 31| 53|18| 4| 7| |30.32| 0.00| 36| 25| 66|00| 11| 21| |16| |29.79| 0.00| 43| 23| 45|24| 11| 24| |29.63| 0.00| 44| 34| 67|15| 0| 10| |30.34| 0.00| 35| 24| 63|06| 5| 14| |19| |29.83| 0.00| 40| 22| 49|24| 5| 16| |29.68| 0.00| 42| 35| 77|20| 0| 5| |30.39| 0.00| 31| 24| 75|09| 0| 4| |22| |29.86| 0.00| 37| 21| 51|27| 4| 12| |29.79| 0.00| 42| 37| 82|27| 4| 14| |30.41| 0.00| 31| 22| 69|06| 0| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 7 | DEC 8 | DEC 9 | | | | | |01| |30.39| 0.00| 29| 24| 81|33| 0| 5| |30.26| 0.00| 46| 37| 72|18| 4| 6| |30.37| 0.00| 45| 40| 81|06| 0| 4| |04| |30.40| 0.00| 32| 27| 82|33| 0| 5| |30.25| 0.00| 45| 37| 74|18| 4| 6| |30.39| 0.00| 47| 44| 88|00| 0| 7| |07| |30.38| 0.00| 32| 28| 85|33| 0| 5| |30.27| 0.00| 44| 37| 77|18| 0| 4| |30.40| 0.00| 49| 46| 88|00| 0| 5| |10| |30.40| 0.00| 40| 31| 70|04| 0| 7| |30.30| 0.00| 50| 42| 73|18| 4| 7| |30.42| 0.00| 55| 49| 80|06| 4| 11| |13| |30.28| 0.00| 47| 37| 67|20| 4| 11| |30.25| 0.00| 57| 45| 64|29| 5| 12| |30.33| 0.00| 63| 54| 72|13| 4| 11| |16| |30.30| 0.00| 50| 37| 61|27| 4| 12| |30.28| 0.00| 55| 42| 61|00| 6| 14| |30.27| 0.00| 68| 57| 69|15| 4| 11| |19| |30.28| 0.00| 48| 37| 66|18| 0| 6| |30.34| 0.00| 49| 41| 73|04| 4| 7| |30.27| 0.00| 58| 53| 84|18| 0| 5| |22| |30.28| 0.00| 47| 37| 70|18| 0| 5| |30.39| 0.00| 47| 40| 76|06| 4| 12| |30.27| 0.00| 57| 55| 91|15| 4| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 10 | DEC 11 | DEC 12 | | | | | |01| |30.23| 0.00| 59| 56| 91|20| 4| 10| |30.25| 0.00| 51| 49| 93|00| 6| 16| |30.12| 0.00| 55| 54| 96|20| 6| 17| |04| |30.21| 0.00| 60| 57| 91|20| 6| 12| |30.29| 0.00| 50| 49| 96|04| 5| 14| |30.07| 0.00| 58| 56| 90|20| 10| 17| |07| |30.24| 0.00| 61| 58| 91|20| 7| 14| |30.34| 0.00| 50| 49| 95|04| 5| 14| |30.06| 0.00| 60| 58| 91|20| 11| 19| |10| |30.24| 0.00| 68| 60| 77|20| 7| 16| |30.38| 0.00| 52| 49| 92|06| 5| 12| |30.07| 0.00| 68| 61| 79|20| 12| 25| |13| |30.18| 0.00| 76| 62| 63|24| 10| 20| |30.30| 0.00| 57| 52| 85|18| 0| 6| |30.02| 0.00| 75| 61| 61|24| 23| 27| |16| |30.16| 0.00| 76| 61| 61|20| 7| 15| |30.26| 0.00| 59| 54| 83|13| 0| 7| |30.02| 0.00| 76| 60| 57|24| 10| 21| |19| |30.20| 0.00| 69| 60| 73|20| 4| 6| |30.25| 0.00| 57| 54| 91|20| 4| 11| |30.15| 0.00| 59| 52| 76|00| 10| 29| |22| |30.20| 0.00| 66| 59| 78|20| 4| 10| |30.20| 0.00| 56| 54| 94|20| 5| 10| |30.20| 0.00| 55| 50| 85|04| 6| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 13 | DEC 14 | DEC 15 | | | | | |01| |30.22| 0.00| 52| 42| 67|04| 11| 22| |30.04| 0.00| 56| 53| 90|31| 0| 4| |30.31| 0.00| 44| 39| 80|04| 11| 23| |04| |30.22| 0.00| 52| 45| 77|04| 10| 21| |30.07| 0.00| 54| 51| 90|33| 0| 6| |30.33| 0.00| 40| 30| 69|04| 6| 18| |07| |30.18| 0.00| 51| 43| 74|06| 6| 18| |30.12| 0.00| 50| 49| 95|04| 5| 12| |30.33| 0.00| 39| 29| 68|04| 7| 18| |10| |30.14| 0.00| 54| 46| 75|13| 4| 11| |30.18| 0.00| 51| 47| 88|04| 4| 12| |30.35| 0.00| 43| 36| 76|04| 7| 20| |13| |29.98| 0.00| 64| 56| 75|18| 5| 14| |30.14| 0.00| 56| 48| 74|06| 5| 14| |30.29| 0.00| 45| 39| 78|04| 7| 18| |16| |29.93| 0.00| 67| 58| 72|20| 12| 20| |30.17| 0.00| 53| 47| 80|04| 6| 15| |30.19| 0.00| 46| 40| 80|04| 11| 23| |19| |30.01| 0.00| 58| 51| 78|33| 12| 27| |30.22| 0.00| 47| 43| 86|02| 4| 7| |30.09| 0.00| 48| 44| 86|06| 10| 21| |22| |30.01| 0.00| 56| 53| 89|31| 0| 5| |30.26| 0.00| 46| 41| 82|04| 4| 11| |29.90| 0.08| 50| 48| 95|06| 6| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 16 | DEC 17 | DEC 18 | | | | | |01| |29.65| 0.06| 60| 59| 97|13| 7| 24| |29.81| 0.00| 37| 23| 58|24| 11| 24| |30.30| 0.00| 28| 20| 70|27| 4| 10| |04| |29.54| 0.06| 63| 63| 98|20| 7| 12| |29.91| 0.00| 34| 22| 60|24| 10| 20| |30.36| 0.00| 32| 23| 67|33| 6| 14| |07| |29.46| 0.00| 60| 59| 98|20| 6| 16| |30.02| 0.00| 33| 20| 59|24| 7| 19| |30.40| 0.00| 30| 22| 73|33| 4| 7| |10| |29.39| 0.02| 56| 55| 96|20| 12| 22| |30.13| 0.00| 37| 21| 51|29| 11| 23| |30.46| 0.00| 38| 26| 62|00| 6| 15| |13| |29.41| 0.00| 49| 44| 83|24| 14| 31| |30.13| 0.00| 40| 21| 45|29| 12| 25| |30.40| 0.00| 41| 21| 45|06| 5| 11| |16| |29.46| 0.00| 50| 39| 66|24| 15| 35| |30.16| 0.00| 41| 20| 43|24| 10| 20| |30.38| 0.00| 41| 23| 48|00| 5| 11| |19| |29.63| 0.00| 44| 26| 50|24| 17| 40| |30.22| 0.00| 34| 20| 56|24| 0| 7| |30.39| 0.00| 37| 26| 64|04| 0| 4| |22| |29.73| 0.00| 39| 24| 55|24| 14| 34| |30.27| 0.00| 29| 21| 69|20| 0| 6| |30.37| 0.00| 36| 27| 69|13| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.10 | 0.19 | 0.28 | 0.37 | 0.55 | 0.82 | 1.09 | 1.14 | 1.20 | 1.26 | 1.29 | 1.31 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0204 | 0209 | 0214 | 0219 | 0229 | 0244 | 0300 | 0300 | 0300 | 0300 | 0330 | 0350 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 2007: 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| |30.33| 0.00| 35| 29| 76|18| 0| 6| |30.16| 0.00| 34| 31| 89|00| 0| 0| |30.20| 0.00| 35| 32| 88|06| 0| 6| |04| |30.29| 0.00| 33| 29| 84|15| 0| 5| |30.16| 0.00| 32| 30| 92|00| 0| 0| |30.19| 0.00| 41| 38| 87|04| 4| 7| |07| |30.26| 0.00| 33| 30| 87|15| 0| 6| |30.19| 0.00| 30| 28| 92|00| 0| 0| |30.22| 0.00| 45| 37| 72|06| 11| 19| |10| |30.25| 0.00| 41| 32| 70|20| 6| 14| |30.23| 0.00| 39| 36| 89|27| 4| 6| |30.23| 0.00| 48| 40| 74|06| 7| 18| |13| |30.15| 0.00| 51| 30| 44|20| 12| 17| |30.18| 0.00| 46| 34| 62|06| 6| 16| |30.22| 0.00| 49| 40| 71|06| 11| 21| |16| |30.11| 0.00| 47| 37| 66|20| 10| 19| |30.21| 0.00| 45| 33| 64|04| 6| 14| |30.21| 0.00| 47| 40| 75|04| 10| 25| |19| |30.15| 0.00| 42| 35| 77|20| 5| 7| |30.20| 0.00| 39| 32| 75|06| 0| 4| |30.25| 0.00| 47| 42| 81|04| 7| 22| |22| |30.17| 0.00| 38| 34| 85|20| 4| 7| |30.24| 0.00| 35| 31| 85|06| 0| 4| |30.27| 0.00| 47| 43| 88|00| 7| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 22 | DEC 23 | DEC 24 | | | | | |01| |30.28| 0.00| 50| 46| 87|04| 10| 21| |30.23| 0.00| 52| 50| 95|06| 4| 11| |29.94| 0.00| 56| 51| 86|20| 7| 19| |04| |30.31| 0.00| 49| 45| 88|04| 10| 21| |30.21| 0.00| 52| 51| 97|06| 0| 6| |30.00| 0.00| 47| 34| 59|24| 7| 18| |07| |30.34| 0.00| 49| 45| 87|04| 11| 24| |30.15| 0.00| 52| 52| 97|11| 4| 11| |30.05| 0.00| 42| 30| 62|24| 6| 13| |10| |30.38| 0.00| 54| 48| 80|04| 10| 21| |30.10| 0.00| 60| 60| 98|15| 5| 18| |30.12| 0.00| 45| 29| 53|24| 10| 19| |13| |30.33| 0.00| 55| 49| 80|06| 7| 18| |29.97| 0.00| 65| 62| 93|18| 6| 19| |30.07| 0.00| 52| 31| 45|24| 10| 18| |16| |30.34| 0.00| 52| 48| 86|04| 7| 14| |29.88| 0.00| 67| 63| 85|18| 7| 22| |30.08| 0.00| 52| 31| 44|24| 7| 17| |19| |30.34| 0.00| 50| 47| 90|04| 6| 16| |29.89| 0.05| 65| 63| 94|20| 7| 15| |30.13| 0.00| 46| 32| 57|24| 0| 5| |22| |30.28| 0.00| 50| 48| 92|04| 5| 14| |29.91| 0.00| 61| 58| 89|20| 11| 23| |30.15| 0.00| 42| 32| 68|24| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 25 | DEC 26 | DEC 27 | | | | | |01| |30.17| 0.00| 39| 30| 69|24| 5| 6| |30.18| 0.00| 45| 39| 80|04| 5| 12| |29.98| 0.00| 40| 38| 92|29| 2| 6| |04| |30.19| 0.00| 38| 31| 74|24| 0| 5| |30.09| 0.00| 46| 40| 79|04| 10| 18| |30.00| 0.00| 39| 37| 93|27| 3| 10| |07| |30.25| 0.00| 35| 30| 82|24| 0| 4| |30.04| 0.06| 45| 42| 89|04| 10| 21| |30.08| 0.00| 40| 37| 92|24| 2| 8| |10| |30.31| 0.00| 47| 33| 58|04| 11| 22| |29.97| 0.10| 44| 42| 93|02| 9| 24| |30.11| 0.00| 43| 40| 88|24| 4| 10| |13| |30.27| 0.00| 49| 34| 55|04| 10| 19| |29.84| 0.09| 44| 43| 94|04| 9| 24| |30.05| 0.00| 53| 46| 76|20| 6| 15| |16| |30.26| 0.00| 47| 33| 59|06| 6| 16| |29.83| 0.03| 42| 40| 94|00| 10| 25| |30.08| 0.00| 56| 46| 70|24| 7| 23| |19| |30.26| 0.00| 45| 37| 72|04| 4| 10| |29.91| 0.02| 40| 38| 94|31| 8| 18| |30.14| 0.00| 48| 43| 84|22| 4| 6| |22| |30.24| 0.00| 44| 38| 79|06| 4| 6| |29.94| 0.00| 40| 37| 90|33| 5| 12| |30.18| 0.00| 43| 41| 92|22| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 28 | DEC 29 | DEC 30 | | | | | |01| |30.21| 0.00| 42| 40| 94|22| 4| 6| |30.03| 0.00| 60| 58| 92|18| 5| 14| |30.09| 0.00| 51| 47| 87|04| 5| 11| |04| |30.26| 0.00| 38| 36| 94|22| 0| 4| |29.99| 0.00| 64| 60| 89|18| 6| 17| |30.11| 0.00| 51| 47| 85|04| 5| 14| |07| |30.30| 0.00| 36| 34| 95|00| 0| 0| |30.00| 0.00| 65| 62| 89|20| 10| 20| |30.12| 0.00| 49| 43| 80|04| 7| 20| |10| |30.31| 0.00| 50| 46| 88|06| 6| 15| |30.01| 0.00| 68| 65| 90|20| 11| 21| |30.15| 0.02| 46| 43| 91|06| 6| 17| |13| |30.27| 0.00| 58| 50| 76|11| 4| 12| |29.95| 0.00| 73| 66| 78|20| 7| 17| |30.00| 0.02| 47| 45| 93|06| 7| 20| |16| |30.23| 0.00| 58| 49| 71|13| 6| 16| |29.99| 0.00| 54| 50| 88|00| 6| 14| |29.93| 0.00| 48| 46| 91|06| 6| 18| |19| |30.19| 0.00| 53| 48| 84|13| 4| 12| |30.03| 0.00| 52| 49| 90|04| 5| 11| |29.90| 0.00| 47| 45| 95|04| 6| 14| |22| |30.11| 0.01| 54| 52| 93|13| 4| 15| |30.08| 0.00| 52| 48| 86|04| 5| 13| |29.84| 0.01| 48| 47| 96|24| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 31 | | | | | | | |01| |29.77| 0.00| 49| 48| 97|20| 4| 10| | | |04| |29.90| 0.00| 45| 43| 94|29| 5| 14| | | |07| |30.01| 0.00| 41| 39| 95|27| 4| 6| | | |10| |30.10| 0.00| 45| 41| 86|24| 6| 15| | | |13| |30.08| 0.00| 52| 38| 58|24| 6| 14| | | |16| |30.11| 0.00| 53| 39| 60|06| 4| 11| | | |19| |30.12| 0.00| 46| 42| 87|13| 0| 7| | | |22| |30.16| 0.00| 42| 40| 91|15| 4| 11| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |30.101| 45| 40| 83| 4.9| 20 | 0.2| |04| |30.114| 44| 39| 83| 4.7| 30 | 0.8| |07| |30.141| 43| 39| 84| 4.7| 35 | 0.3| |10| |30.164| 48| 41| 77| 7.2| 25 | 0.8| |13| |30.107| 53| 41| 66| 7.9| 25 | 1.8| |16| |30.097| 53| 41| 66| 6.9| 30 | 0.5| |19| |30.127| 48| 40| 76| 4.4| 34 | 1.1| |22| |30.134| 46| 40| 81| 4.0| 18 | 0.5| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
December 2007: 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| | | | | | | | | | | | | | | | | | | | | | |0.02|0.01|02 03| |0.02|0.02|0.01|0.03| | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | |0.02|0.17|0.08|0.37|15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| |0.06|0.17|1.08|0.06| | | | | |0.02| | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | |0.01| | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | |0.10|0.01| | | | | | |0.05| | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | |0.01|0.06|0.04|0.16|0.10|0.12|0.38|0.09| |0.01|0.03|0.02|0.02|0.02| | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | |0.01| |28 29| | | | | | | | | | | | | | | | | |0.02| | | | | | |29 30| | | | | | | | | | |0.02|0.01|0.05|0.02|0.01| | | |0.02| | | |0.01|0.03|30 31| | |0.01|0.01| | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.08|0.20|1.10|0.09|0.00|0.01|0.06|0.04|0.16|0.14|0.23|0.44|0.11|0.02|0.01|0.03|0.04|0.04|0.07|0.02|0.17|0.12|0.41|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.)