LOCAL CLIMATOLOGICAL DATA
Monthly Summary
December 2016
Station: KPWR Portsmouth, Virginia
Latitude: 36° 59' 09" N Longitude: 76° 33' 00" W Elevation (ground): 13 feet Time Zone: Eastern
+--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+
| | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind |Solar |
| +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+
| | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak |2Minute| Mean |
| | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ W |
| | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | a |
| D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | t |
| a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | t |
| t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | s |
| 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 | m^2 |
| | | | | | | | | |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| 69.7 | 48.8 | 59.3*| 61.5 | 49| 66| 5| 0|.........| 0| 0.00| 0.0| 29.96| 29.62|29.775| 2.0| 1.5|266| 29|SSW| 0| 0| |
|02| 54.2 | 36.7 | 45.5 | 46.3 | 36| 69| 19| 0|.........| 0| 0.00| 0.0| 30.13| 29.96|30.051| 0.7| 0.6|314| 22| NW| 0| 0| |
|03| 51.8 | 37.6 | 44.7 | 44.9 | 34| 65| 20| 0|.........| 0| 0.00| 0.0| 30.26| 30.14|30.197| 1.5| 1.5|314| 23| NW| 0| 0| |
|04| 49.3 | 40.6 | 44.9 | 45.0 | 38| 77| 20| 0|.........| 0| 0.05| 0.0| 30.29| 30.09|30.217| 0.0| 0.0| 0| 13| NW| 0| 0| |
|05| 53.2 | 44.8 | 49.0 | 48.1 | 46| 91| 16| 0|1........| 0| 0.66| 0.0| 30.10| 29.95|30.013| 0.3| 0.3| 9| 21|NNW| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 59.8 | 47.8 | 53.8 | 51.6 | 50| 94| 11| 0|1........| 0| 0.84| 0.0| 30.09| 29.56|29.824| 1.1| 0.8|316| 29| SW| 0| 0| |
|07| 54.1 | 39.5 | 46.8 | 48.2 | 44| 88| 18| 0|1........| 0| 0.00| 0.0| 30.09| 29.76|29.980| 1.3| 1.3|315| 20| NW| 0| 0| |
|08| 50.4 | 37.6 | 44.0 | 44.4 | 40| 85| 21| 0|1........| 0| 0.01| 0.0| 30.14| 29.98|30.044| 0.5| 0.5|300| 20| NW| 0| 0| |
|09| 40.5 | 31.2 | 35.8 | 36.4 | 22| 56| 29| 0|.........| 0| 0.00| 0.0| 30.43| 30.16|30.313| 5.2| 5.0|318| 25|WNW| 0| 0| |
|10| 39.8 | 25.3 | 32.5 | 32.8 | 21| 64| 32| 0|.........| 0| 0.00| 0.0| 30.52| 30.42|30.479| 0.1| 0.1|333| 18| N| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 48.7 | 25.7 | 37.2 | 38.8 | 31| 75| 27| 0|.........| 0| 0.00| 0.0| 30.55| 30.15|30.419| 0.1| 0.0| 95| 13| SE| 0| 0| |
|12| 60.6 | 46.0 | 53.3 | 54.3 | 53| 94| 11| 0|1........| 0| 0.43| 0.0| 30.11| 29.86|29.978| 0.1| 0.1|215| 24|SSW| 0| 0| |
|13| 55.9 | 43.7 | 49.8 | 49.3 | 45| 86| 15| 0|1........| 0| 0.01| 0.0| 30.18| 29.94|30.080| 0.0| 0.0|113| 13|ENE| 0| 0| |
|14| 48.2 | 41.5 | 44.8 | 45.7 | 40| 82| 20| 0|.........| 0| 0.00| 0.0| 30.11| 29.94|30.029| 0.7| 0.5| 37| 21|ENE| 0| 0| |
|15| 42.2 | 24.0 | 33.1 | 36.1 | 17| 52| 32| 0|.........| 0| 0.00| 0.0| 30.39| 29.88|30.103| 5.2| 5.1|313| 35| NW| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 33.7 | 19.9*| 26.8*| 27.9 | 12| 52| 38| 0|.........| 0| 0.00| 0.0| 30.53| 30.31|30.438| 0.1| 0.1|328| 17| N| 0| 0| |
|17| 50.4 | 33.7 | 42.1 | 43.8 | 42| 93| 23| 0|1........| 0| 0.13| 0.0| 30.27| 30.00|30.075| 0.8| 0.8|211| 24|SSW| 0| 0| |
|18| 77.5*| 42.2 | 59.8 | 60.9 | 56| 85| 5| 0|1........| 0| 0.15| 0.0| 30.41| 29.94|30.076| 4.2| 1.3| 36| 39| SW| 0| 0| |
|19| 42.9 | 35.9 | 39.4 | 37.9 | 29| 71| 25| 0|.........| 0| 0.03| 0.0| 30.66| 30.41|30.569| 6.7| 6.6| 46| 30| NE| 0| 0| |
|20| 42.1 | 34.6 | 38.3 | 38.5 | 32| 76| 26| 0|.........| 0| 0.00| 0.0| 30.56| 30.21|30.413| 1.2| 1.1| 43| 24| NE| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 51.2 | 27.2 | 39.2 | 38.1 | 27| 69| 26| 0|.........| 0| 0.00| 0.0| 30.27| 30.17|30.228| 0.0| 0.0| 0| 11| NE| 0| 0| |
|22| 60.2 | 31.7 | 46.0 | 45.6 | 35| 67| 19| 0|.........| 0| 0.00| 0.0| 30.33| 29.95|30.119| 0.3| 0.3| 11| 26|WNW| 0| 0| |
|23| 48.6 | 38.3 | 43.4 | 42.6 | 34| 70| 21| 0|.........| 0| 0.00| 0.0| 30.53| 30.34|30.449| 0.0| 0.0| 0| 16| NW| 0| 0| |
|24| 54.8 | 42.5 | 48.7 | 50.5 | 49| 94| 16| 0|12.......| 0| 0.20| 0.0| 30.35| 30.16|30.244| 0.0| 0.0| 0| 13| W| 0| 0| |
|25| 49.7 | 42.3 | 46.0 | 46.0 | 43| 89| 19| 0|12.......| 0| 0.00| 0.0| 30.58| 30.31|30.463| 0.7| 0.7| 68| 21|ENE| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|26| 53.0 | 45.3 | 49.2 | 48.6 | 45| 88| 16| 0|1........| 0| 0.00| 0.0| 30.59| 30.27|30.481| 0.0| 0.0| 0| 14|NNW| 0| 0| |
|27| 68.8 | 46.9 | 57.9 | 60.0 | 58| 92| 7| 0|1........| 0| 0.00| 0.0| 30.25| 29.92|30.040| 1.0| 1.0|207| 28|SSW| 0| 0| |
|28| 59.3 | 38.4 | 48.8 | 47.4 | 39| 75| 16| 0|.........| 0| 0.00| 0.0| 30.17| 29.98|30.105| 0.0| 0.0| 0| 16| NE| 0| 0| |
|29| 55.5 | 36.9 | 46.2 | 45.9 | 40| 81| 18| 0|1........| 0| 0.34| 0.0| 30.05| 29.61|29.796| 1.3| 1.3|287| 28|WNW| 0| 0| |
|30| 45.1 | 33.4 | 39.3 | 39.4 | 26| 58| 26| 0|.........| 0| 0.00| 0.0| 30.17| 29.80|29.947| 3.9| 3.7|270| 28| W| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|31| 48.1 | 26.0 | 37.0 | 38.6 | 28| 67| 28| 0|.........| 0| 0.00| 0.0| 30.25| 30.06|30.163| 0.5| 0.5|210| 19|SSW| 0| 0| |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|1619.3|1146.0|------|------|---|----| 625| 0| Days | 2.85| 0.0| 30.66| 29.56|30.165| 1.3| 0.6|332| 39| SW| 0| 0| ---- |
+------+------+------+------+---+----+----+----+------------|-0.49" or 85% of normal +------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 52.3| 37.0| 44.6 | 45.0 | 37|76.5|----|----|≥.01 Inch 11|67.02| 0.0| 19 | 6 |------|----|----|---| 18 | 1+ | |
+ -1.0 +0.9 -0.1 +------+---+----+----+----+------------|+16.71" or 133% 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 |1121|2064|Thunder 0|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 2| 0.84| 6 | 0.0 | - | 0 | - |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 0 | 0 | 8 | 0 |----|----| Clear 9 Partly Cloudy 11 Cloudy 11 |
+--------+---------+--------+--------+----+----+------------------------------------------+
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: Solar Radiation 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: 6th, 8th, 12th (WARMFROPA),14th, 15th (arctic), 16-17th WARMFROPA,18th, 22nd, 24th, 27th WARMFROPA, 28th, 29th
FROST: 2nd (light on car tops), 10th cartops, 11th, 16th (few rooftops only), 20th (pm), 21st, 22nd, 30th, 31st
STATION RECORDS:
6th - RAINFALL 0.84"[ previous 0.79" 1983]
18th - TEMPERATURE 78° [previous 77° 1984]
18th - WIND GUST 39mph [previous 37mph 1990]
MONTHLY AVERAGE MAXIMUM TEMP OF 52.3° WAS 1.0° BELOW NORMAL
MONTHLY AVERAGE MINIMUM TEMP OF 37.0° WAS 0.9° ABOVE NORMAL
MONTHLY AVERAGE TEMP OF 44.6° WAS 0.1° BELOW NORMAL
MAXIMUM TEMP: 78° ON THE 18th
MINIMUM TEMP: 20° ON THE 16th
DAYS WITH TEMPERATURES:
MAXIMUM >= 90°: 0
MAXIMUM <= 32°: 0
MINIMUM <= 32°: 8
MINIMUM <= 0°: 0
HEATING DEGREE DAYS: 631.0
COOLING DEGREE DAYS: 0.0
DAYS WITH HEATING DEGREE DAYS: 31
DAYS WITH COOLING DEGREE DAYS: 0
PRECIP TOTAL OF 2.85" WAS 0.49" BELOW NORMAL (85% OF NORMAL)
GREATEST DAILY RAINFALL: 0.84" on the 6th
GREATEST 24-HOUR RAINFALL: 0.84" on the 6th
DAYS WITH MEASUREABLE PRECIP: 11 OF 31 DAYS OR 35.48%
AVERAGE DAILY PRECIP: 0.09"
NORMAL DAILY PRECIP: 0.11"
DAYS WITH PRECIP >= 0.01" 11
DAYS WITH PRECIP >= 0.10" 7
DAYS WITH PRECIP >= 0.50" 2
DAYS WITH PRECIP >= 1.00" 0
DAYS WITH THUNDERSTORMS: 0
NUMBER OF THUNDERSTORMS: 0
DAYS WITH SNOW: 0
SNOWFALL TOTAL: 0.0"
SEASONAL SNOWFALL 2016-2017 (beginning November 2016): 0.0"
CLOUDY DAYS: 11
PARTLY CLOUDY DAYS 11
SUNNY/CLEAR DAYS: 9
DAYS WITH F/GF: 13
DAYS WITH DENSE FOG: 2
DAYS WITH FROST: 9
YEAR-TO-DATE
YEARLY AVERAGE MAXIMUM TEMP OF 70.9° WAS 1.2° ABOVE NORMAL
YEARLY AVERAGE MINIMUM TEMP OF 53.3° WAS 1.8° ABOVE NORMAL
YEARLY AVERAGE TEMP OF 62.1° WAS 1.5° ABOVE NORMAL
MAXIMUM TEMP: 99° on July 28th
MINIMUM TEMP: 17° on February 14th
DAYS WITH TEMPERATURES:
MAXIMUM >= 90°: 52
MAXIMUM <= 32°: 4
MINIMUM <= 32°: 41
MINIMUM <= 0°: 0
HEATING DEGREE DAYS: 3065.5
COOLING DEGREE DAYS: 2017.0
DAYS WITH HEATING DEGREE DAYS: 195
DAYS WITH COOLING DEGREE DAYS: 169
PRECIP TOTAL OF 67.02" WAS 16.69" ABOVE NORMAL (133% OF NORMAL).
*2016 WAS THE 5th WETTEST YEAR IN THE STATION DATABASE to 1976.
The top five wettest years include: 1) 76.28" 1999 2) 70.43" 2009 3) 69.00" 2014 4) 67.52" 2012 5) 67.02" 2016.
GREATEST DAILY RAINFALL: 9.19" on October 8th
GREATEST 24-HOUR RAINFALL: 11.09" on October 8th - 9th
DAYS WITH MEASUREABLE PRECIP: 136 of 366 or 37.16%
AVERAGE DAILY PRECIP: 0.18"
NORMAL DAILY PRECIP: 0.14"
DAYS WITH PRECIP >= 0.01" 136
DAYS WITH PRECIP >= 0.10" 80
DAYS WITH PRECIP >= 0.50" 35
DAYS WITH PRECIP >= 1.00" 15
DAYS WITH THUNDERSTORMS: 29
NUMBER OF THUNDERSTORMS: 31
DAYS WITH SNOW (calendar year 2016): 12
SNOWFALL TOTAL (calendar year 2016): 4.6"
SEASONAL SNOW 2016-2017 (beginning November 2016): 0.0"
CLOUDY DAYS: 75
PARTLY CLOUDY DAYS: 138
SUNNY/CLEAR DAYS: 153
DAYS WITH F/GF: 106
DAYS WITH DENSE FOG: 5
DAYS WITH FROST: 30
OBSERVATIONS AT 3-HOUR INTERVALS
December 2016: KPWR Portsmouth, Virginia
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | 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| |29.62| 0.00| 68| 67| 96|22| 0| 17| |29.96| 0.00| 49| 37| 63|33| 4| 15| |30.14| 0.00| 44| 34| 69|31| 4| 19|
|04| |29.64| 0.00| 70| 66| 90|20| 4| 21| |30.01| 0.00| 42| 37| 80|00| 0| 0| |30.16| 0.00| 42| 32| 68|29| 0| 12|
|07| |29.72| 0.00| 65| 54| 66|31| 4| 19| |30.07| 0.00| 37| 34| 89|00| 0| 0| |30.20| 0.00| 38| 31| 77|29| 0| 7|
|10| |29.79| 0.00| 62| 51| 66|24| 4| 20| |30.10| 0.00| 46| 37| 72|24| 0| 5| |30.22| 0.00| 45| 34| 64|29| 0| 20|
|13| |29.76| 0.00| 64| 43| 47|27| 4| 18| |30.03| 0.00| 53| 36| 53|27| 0| 15| |30.18| 0.00| 50| 34| 54|31| 4| 18|
|16| |29.78| 0.00| 62| 41| 47|27| 5| 22| |30.03| 0.00| 54| 36| 52|27| 0| 15| |30.20| 0.00| 51| 34| 52|31| 4| 16|
|19| |29.87| 0.00| 55| 39| 54|24| 0| 14| |30.06| 0.00| 46| 37| 70|00| 0| 0| |30.21| 0.00| 45| 35| 68|00| 0| 0|
|22| |29.91| 0.00| 49| 39| 67|27| 0| 7| |30.09| 0.00| 44| 36| 76|24| 0| 12| |30.25| 0.00| 45| 36| 70|31| 0| 15|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 4 | DEC 5 | DEC 6 |
| | | |
|01| |30.26| 0.00| 44| 35| 71|31| 0| 4| |30.05| 0.05| 45| 44| 96|15| 0| 5| |30.07| 0.00| 49| 45| 85|00| 0| 0|
|04| |30.24| 0.00| 42| 35| 77|02| 0| 5| |29.98| 0.08| 46| 45| 97|33| 0| 7| |30.07| 0.00| 49| 47| 91|00| 0| 0|
|07| |30.26| 0.00| 41| 36| 84|29| 0| 4| |29.98| 0.14| 47| 46| 98|27| 0| 6| |30.00| 0.00| 50| 47| 89|06| 0| 16|
|10| |30.29| 0.00| 46| 39| 76|29| 0| 7| |29.98| 0.00| 49| 49| 98|33| 0| 4| |29.95| 0.06| 51| 49| 95|06| 0| 19|
|13| |30.23| 0.00| 49| 39| 68|04| 0| 7| |29.99| 0.00| 51| 48| 91|31| 0| 12| |29.78| 0.02| 53| 52| 97|06| 0| 22|
|16| |30.21| 0.00| 48| 38| 67|02| 0| 5| |30.01| 0.00| 53| 45| 75|04| 4| 19| |29.61| 0.02| 57| 57| 99|06| 0| 7|
|19| |30.18| 0.00| 46| 39| 78|00| 0| 0| |30.05| 0.00| 47| 44| 89|04| 0| 6| |29.59| 0.48| 55| 53| 95|29| 4| 26|
|22| |30.14| 0.01| 46| 43| 92|00| 0| 0| |30.08| 0.00| 49| 45| 86|06| 0| 7| |29.67| 0.00| 50| 49| 98|29| 4| 20|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 7 | DEC 8 | DEC 9 |
| | | |
|01| |29.76| 0.00| 47| 46| 96|29| 4| 17| |30.06| 0.00| 39| 37| 94|00| 0| 0| |30.16| 0.00| 37| 26| 65|31| 0| 12|
|04| |29.85| 0.00| 48| 46| 96|31| 4| 16| |30.03| 0.00| 42| 41| 97|00| 0| 0| |30.21| 0.00| 36| 24| 60|33| 5| 19|
|07| |29.95| 0.00| 47| 46| 96|29| 0| 13| |30.02| 0.00| 42| 42| 98|00| 0| 0| |30.27| 0.00| 33| 23| 66|31| 5| 19|
|10| |30.02| 0.00| 49| 46| 91|31| 0| 16| |30.03| 0.00| 48| 48| 98|02| 0| 5| |30.33| 0.00| 36| 22| 55|31| 10| 23|
|13| |29.99| 0.00| 54| 45| 73|33| 4| 19| |29.98| 0.00| 50| 48| 92|29| 0| 15| |30.30| 0.00| 39| 22| 49|31| 11| 23|
|16| |30.02| 0.00| 53| 45| 74|04| 0| 15| |30.01| 0.01| 49| 42| 76|29| 0| 16| |30.34| 0.00| 40| 22| 47|29| 10| 21|
|19| |30.08| 0.00| 48| 44| 87|04| 0| 12| |30.09| 0.00| 45| 35| 68|29| 0| 14| |30.39| 0.00| 36| 22| 56|24| 0| 5|
|22| |30.08| 0.00| 42| 40| 93|04| 0| 4| |30.12| 0.00| 40| 30| 67|27| 0| 11| |30.41| 0.00| 32| 22| 68|00| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 10 | DEC 11 | DEC 12 |
| | | |
|01| |30.43| 0.00| 33| 20| 59|33| 0| 15| |30.50| 0.00| 27| 23| 86|00| 0| 0| |30.11| 0.00| 47| 43| 85|00| 0| 0|
|04| |30.48| 0.00| 32| 21| 63|02| 0| 4| |30.51| 0.00| 27| 25| 91|00| 0| 0| |30.01| 0.01| 55| 53| 92|20| 0| 20|
|07| |30.50| 0.00| 26| 21| 80|00| 0| 0| |30.50| 0.00| 28| 26| 90|00| 0| 0| |29.99| 0.00| 58| 57| 96|22| 0| 13|
|10| |30.52| 0.00| 34| 22| 60|29| 0| 7| |30.55| 0.00| 40| 32| 71|06| 0| 4| |29.97| 0.00| 60| 57| 90|18| 0| 4|
|13| |30.44| 0.00| 39| 23| 52|27| 0| 5| |30.45| 0.00| 48| 33| 56|09| 0| 7| |29.91| 0.00| 56| 56| 97|20| 0| 13|
|16| |30.44| 0.00| 39| 21| 48|00| 0| 0| |30.38| 0.00| 47| 35| 63|11| 0| 4| |29.87| 0.01| 58| 55| 91|18| 0| 13|
|19| |30.48| 0.00| 32| 23| 67|00| 0| 0| |30.34| 0.00| 45| 37| 73|11| 0| 4| |29.95| 0.00| 52| 51| 95|00| 0| 0|
|22| |30.51| 0.00| 28| 23| 80|00| 0| 0| |30.24| 0.00| 46| 39| 76|00| 0| 0| |30.04| 0.00| 51| 50| 98|00| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 13 | DEC 14 | DEC 15 |
| | | |
|01| |30.08| 0.00| 48| 47| 98|00| 0| 0| |29.94| 0.00| 48| 45| 92|31| 0| 7| |29.95| 0.00| 41| 38| 89|18| 0| 5|
|04| |30.14| 0.00| 47| 45| 95|04| 0| 6| |29.97| 0.00| 47| 44| 92|00| 0| 0| |29.90| 0.00| 41| 39| 93|20| 0| 14|
|07| |30.15| 0.00| 44| 41| 87|00| 0| 0| |30.04| 0.00| 46| 43| 90|33| 0| 14| |29.92| 0.00| 42| 37| 82|27| 0| 15|
|10| |30.17| 0.00| 48| 44| 84|04| 0| 10| |30.10| 0.00| 46| 40| 80|33| 4| 13| |30.02| 0.00| 41| 19| 41|31| 13| 31|
|13| |30.11| 0.00| 55| 48| 75|15| 0| 13| |30.06| 0.00| 48| 38| 69|04| 4| 15| |30.07| 0.00| 38| 6| 26|31| 17| 35|
|16| |30.04| 0.00| 54| 47| 77|13| 0| 6| |30.06| 0.00| 48| 39| 72|06| 0| 7| |30.16| 0.00| 34| 4| 27|31| 10| 31|
|19| |30.03| 0.00| 52| 47| 85|06| 0| 4| |30.04| 0.00| 44| 39| 82|18| 0| 4| |30.31| 0.00| 29| 3| 32|33| 4| 22|
|22| |29.95| 0.00| 48| 46| 93|06| 0| 7| |30.01| 0.00| 43| 38| 84|22| 0| 4| |30.38| 0.00| 26| 2| 36|33| 0| 18|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 16 | DEC 17 | DEC 18 |
| | | |
|01| |30.39| 0.00| 24| 4| 42|33| 0| 7| |30.27| 0.00| 34| 25| 68|00| 0| 0| |29.97| 0.00| 53| 53|100|00| 0| 0|
|04| |30.43| 0.00| 23| 4| 43|31| 0| 7| |30.19| 0.05| 35| 33| 92|00| 0| 0| |29.97| 0.00| 60| 60|100|20| 0| 14|
|07| |30.46| 0.00| 20| 10| 65|00| 0| 0| |30.06| 0.00| 39| 38| 98|00| 0| 0| |29.97| 0.00| 62| 62| 99|22| 0| 20|
|10| |30.53| 0.00| 26| 6| 42|29| 0| 11| |30.08| 0.00| 42| 42| 98|22| 0| 15| |29.98| 0.00| 68| 65| 90|22| 0| 19|
|13| |30.50| 0.00| 30| 14| 50|31| 0| 10| |30.03| 0.00| 47| 45| 95|20| 4| 17| |29.95| 0.00| 76| 66| 71|20| 5| 28|
|16| |30.46| 0.00| 32| 17| 52|00| 0| 0| |30.02| 0.00| 50| 49| 94|20| 4| 18| |30.04| 0.00| 75| 62| 63|31| 4| 23|
|19| |30.43| 0.00| 32| 18| 55|00| 0| 0| |30.03| 0.00| 50| 49| 96|20| 0| 20| |30.23| 0.11| 47| 44| 89|04| 7| 28|
|22| |30.35| 0.00| 33| 22| 65|00| 0| 0| |30.02| 0.00| 50| 49| 96|20| 0| 4| |30.39| 0.00| 44| 37| 75|04| 10| 27|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.05 | 0.09 | 0.13 | 0.17 | 0.25 | 0.37 | 0.49 | 0.50 | 0.52 | 0.54 | 0.55 | 0.57 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 1805 | 1810 | 1815 | 1820 | 1830 | 1845 | 1900 | 1900 | 1900 | 1900 | 1900 | 1900 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
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 2016: KPWR Portsmouth, Virginia
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+
| | | | | | | | | | | | | | | | | | | | | | |
| | | | | 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| |30.41| 0.00| 42| 36| 77|04| 12| 30| |30.56| 0.00| 37| 31| 79|04| 5| 24| |30.22| 0.00| 33| 30| 90|00| 0| 0|
|04| |30.51| 0.01| 40| 34| 81|04| 10| 22| |30.53| 0.00| 37| 30| 78|04| 4| 22| |30.17| 0.00| 29| 27| 92|00| 0| 0|
|07| |30.55| 0.00| 38| 32| 78|04| 10| 27| |30.52| 0.00| 36| 30| 78|04| 0| 15| |30.22| 0.00| 27| 25| 92|00| 0| 0|
|10| |30.65| 0.00| 37| 30| 77|04| 11| 26| |30.52| 0.00| 38| 27| 63|04| 0| 17| |30.27| 0.00| 37| 31| 77|00| 0| 0|
|13| |30.60| 0.00| 38| 28| 69|04| 10| 27| |30.40| 0.00| 41| 33| 73|31| 0| 18| |30.24| 0.00| 50| 31| 48|04| 0| 11|
|16| |30.58| 0.00| 37| 28| 69|04| 5| 27| |30.34| 0.00| 41| 35| 78|29| 0| 5| |30.23| 0.00| 50| 24| 35|04| 0| 4|
|19| |30.60| 0.00| 37| 26| 66|04| 0| 16| |30.30| 0.00| 41| 36| 83|31| 0| 7| |30.24| 0.00| 41| 27| 58|00| 0| 0|
|22| |30.58| 0.00| 37| 30| 74|04| 4| 22| |30.25| 0.00| 40| 34| 81|00| 0| 0| |30.24| 0.00| 37| 29| 72|00| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 22 | DEC 23 | DEC 24 |
| | | |
|01| |30.20| 0.00| 33| 28| 84|00| 0| 0| |30.34| 0.00| 42| 31| 64|33| 0| 15| |30.35| 0.00| 43| 39| 87|00| 0| 0|
|04| |30.14| 0.00| 32| 29| 88|00| 0| 0| |30.41| 0.00| 40| 30| 69|31| 0| 4| |30.29| 0.00| 46| 44| 94|00| 0| 0|
|07| |30.11| 0.00| 36| 31| 83|00| 0| 0| |30.45| 0.00| 39| 30| 70|04| 0| 4| |30.23| 0.00| 52| 50| 93|00| 0| 0|
|10| |30.08| 0.00| 46| 38| 71|20| 0| 7| |30.51| 0.00| 44| 34| 68|06| 0| 12| |30.26| 0.00| 53| 50| 91|22| 0| 4|
|13| |29.97| 0.00| 57| 41| 56|24| 0| 17| |30.48| 0.00| 47| 35| 62|06| 0| 4| |30.18| 0.03| 52| 51| 97|20| 0| 12|
|16| |30.00| 0.00| 60| 40| 47|27| 0| 5| |30.46| 0.00| 47| 35| 65|06| 0| 6| |30.18| 0.00| 54| 53| 95|22| 0| 12|
|19| |30.12| 0.00| 53| 34| 48|00| 0| 0| |30.49| 0.00| 42| 36| 77|00| 0| 0| |30.21| 0.00| 53| 51| 95|27| 0| 4|
|22| |30.28| 0.00| 46| 33| 59|33| 4| 21| |30.44| 0.00| 41| 37| 84|00| 0| 0| |30.28| 0.00| 50| 50| 98|00| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 25 | DEC 26 | DEC 27 |
| | | |
|01| |30.31| 0.00| 49| 48| 98|00| 0| 0| |30.56| 0.00| 46| 42| 87|31| 0| 7| |30.25| 0.00| 47| 46| 95|00| 0| 0|
|04| |30.36| 0.00| 46| 45| 98|06| 4| 15| |30.57| 0.00| 46| 43| 88|04| 0| 6| |30.17| 0.00| 53| 52| 96|20| 0| 12|
|07| |30.42| 0.00| 45| 44| 98|00| 0| 0| |30.58| 0.00| 45| 42| 88|06| 0| 14| |30.13| 0.00| 57| 56| 98|20| 0| 13|
|10| |30.48| 0.00| 45| 44| 98|00| 0| 0| |30.59| 0.00| 47| 44| 89|33| 0| 7| |30.06| 0.00| 64| 63| 95|22| 4| 19|
|13| |30.47| 0.00| 49| 42| 76|06| 4| 21| |30.49| 0.00| 53| 47| 82|33| 0| 10| |29.98| 0.00| 68| 63| 83|20| 4| 20|
|16| |30.48| 0.00| 48| 40| 73|04| 0| 14| |30.43| 0.00| 53| 48| 84|00| 0| 0| |29.93| 0.00| 67| 61| 82|20| 4| 23|
|19| |30.53| 0.00| 43| 38| 83|04| 0| 5| |30.39| 0.00| 51| 48| 88|00| 0| 0| |29.94| 0.00| 62| 59| 89|22| 0| 11|
|22| |30.58| 0.00| 44| 41| 90|06| 0| 7| |30.33| 0.00| 48| 46| 93|20| 0| 5| |29.96| 0.00| 60| 59| 95|24| 0| 6|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 28 | DEC 29 | DEC 30 |
| | | |
|01| |29.98| 0.00| 58| 56| 94|24| 0| 4| |30.05| 0.00| 38| 36| 92|00| 0| 0| |29.80| 0.00| 40| 28| 63|24| 4| 14|
|04| |30.03| 0.00| 51| 45| 79|00| 0| 0| |29.94| 0.00| 37| 36| 94|00| 0| 0| |29.82| 0.00| 39| 28| 63|24| 5| 22|
|07| |30.10| 0.00| 43| 40| 90|00| 0| 0| |29.89| 0.00| 43| 43| 98|00| 0| 0| |29.86| 0.00| 37| 28| 68|27| 4| 18|
|10| |30.17| 0.00| 49| 38| 64|04| 0| 14| |29.77| 0.12| 47| 47| 99|00| 0| 0| |29.92| 0.00| 41| 28| 60|27| 6| 23|
|13| |30.13| 0.00| 51| 36| 57|02| 0| 13| |29.63| 0.00| 53| 53| 99|24| 0| 13| |29.90| 0.00| 45| 24| 43|29| 7| 28|
|16| |30.13| 0.00| 49| 34| 55|00| 0| 0| |29.64| 0.00| 55| 50| 82|24| 0| 10| |29.96| 0.00| 43| 25| 47|29| 4| 22|
|19| |30.15| 0.00| 43| 36| 77|00| 0| 0| |29.76| 0.00| 50| 30| 45|29| 5| 25| |30.06| 0.00| 38| 24| 57|22| 0| 5|
|22| |30.12| 0.00| 39| 36| 88|00| 0| 0| |29.80| 0.00| 44| 29| 55|27| 4| 17| |30.15| 0.00| 35| 23| 62|27| 0| 13|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| DEC 31 | | |
| | | |
|01| |30.18| 0.00| 32| 23| 70|00| 0| 0| | |
|04| |30.20| 0.00| 28| 23| 81|00| 0| 0| | |
|07| |30.24| 0.00| 26| 22| 85|00| 0| 0| | |
|10| |30.25| 0.00| 34| 28| 77|00| 0| 0| | |
|13| |30.17| 0.00| 47| 31| 53|20| 0| 19| | |
|16| |30.14| 0.00| 48| 31| 52|15| 0| 12| | |
|19| |30.11| 0.00| 45| 33| 61|18| 0| 14| | |
|22| |30.07| 0.00| 48| 36| 63|20| 4| 14| | |
+--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |30.160| 42| 37| 82| 1.1| 00 | 0.6|
|04| |30.159| 42| 37| 84| 1.2| 01 | 0.4|
|07| |30.173| 42| 38| 86| 0.7| 35 | 0.4|
|10| |30.199| 46| 39| 77| 1.7| 32 | 1.0|
|13| |30.143| 50| 39| 68| 2.5| 32 | 1.2|
|16| |30.134| 50| 38| 66| 1.7| 30 | 1.0|
|19| |30.170| 45| 37| 73| 0.6| 34 | 0.4|
|22| |30.184| 43| 36| 79| 1.0| 36 | 0.4|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
December 2016: KPWR Portsmouth, Virginia
---+-----------------------------------------------------------+-----------------------------------------------------------+---
| | |
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| | | | | | | | | | | | | | | | | | | | |0.01|0.01|0.01|0.02|04
05|0.05|0.09|0.05|0.08|0.13|0.12|0.14| | | | | | | | | | | | | | | | | |05
| | | | | | | | | | | | | | | | | | | | | | | | |
06| | | | |0.01|0.01| |0.01| |0.06|0.05|0.01|0.02|0.01|0.05|0.02|0.03|0.05|0.48|0.03| | | | |06
07| | | | | | | | | | | | | | | | | | | | | | | | |07
08| | | | | | | | | | | | | | | |0.01| | | | | | | | |08
09| | | | | | | | | | | | | | | | | | | | | | | | |09
10| | | | | | | | | | | | | | | | | | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| | | | | | | | | | | | | | | | | | | | | | | | |11
12| | | |0.01| | | | | | |0.41| | | | |0.01| | | | | | | | |12
13| | | | | | | | | | | | | | | | | | | |0.01| | | | |13
14| | | | | | | | | | | | | | | | | | | | | | | | |14
15| | | | | | | | | | | | | | | | | | | | | | | | |15
| | | | | | | | | | | | | | | | | | | | | | | | |
16| | | | | | | | | | | | | | | | | | | | | | | | |16
17| | | |0.05|0.05|0.03| | | | | | | | | | | | | | | | | | |17
18| | | | | | | | | | | | | | | | |0.03| |0.11|0.01| | | | |18
19| | |0.01|0.01|0.01| | | | | | | | | | | | | | | | | | | |19
20| | | | | | | | | | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | | | | | | | | | |22
23| | | | | | | | | | | | | | | | | | | | | | | | |23
24| | | | | | | | | | |0.06|0.10|0.03| |0.01| | | | | | | | | |24
25| | | | | | | | | | | | | | | | | | | | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | | | | | | | | | | | | | | | |27
28| | | | | | | | | | | | | | | | | | | | | | | | |28
29| | | | | | | |0.08|0.10|0.12|0.03|0.01| | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
31| | | | | | | | | | | | | | | | | | | | | | | | |31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.05|0.09|0.06|0.15|0.20|0.16|0.14|0.09|0.10|0.18|0.55|0.12|0.05|0.01|0.06|0.04|0.06|0.05|0.59|0.05|0.01|0.01|0.01|0.02|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.)