LOCAL CLIMATOLOGICAL DATA Monthly Summary
January 2018
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| 25.9 | 15.3 | 20.6 | 21.2 | 7| 55| 44| 0|.........| 0| 0.00| 0.0| 30.50| 30.38|30.447| 1.1| 1.1|318| 29|NNW| 0| 0| | |02| 27.5 | 15.2 | 21.4 | 20.5 | 8| 58| 43| 0|.........| 0| 0.00| 0.0| 30.60| 30.41|30.506| 0.0| 0.0| 0| 25|WNW| 0| 0| | |03| 36.0 | 12.3 | 24.1 | 26.0 | 20| 77| 41| 0|1.......9| 4| 0.40| 4.0| 30.41| 29.69|30.145| 1.5| 1.4| 11| 25| NE| 0| 0| | |04| 31.7 | 19.9 | 25.8 | 26.1 | 21| 83| 39| 0|1.......9|11| 0.70| 7.0| 29.94| 29.50|29.683| 8.2| 7.1|321| 49| NW| 0| 0| | |05| 26.8 | 12.0 | 19.4 | 19.1 | 6| 57| 45| 0|.........|11| 0.00| 0.0| 30.32| 29.95|30.141| 1.2| 1.1|274| 27|WNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 23.5 | 7.1*| 15.3*| 16.5 | 3| 56| 49| 0|.........|11| 0.00| 0.0| 30.57| 30.32|30.430| 0.0| 0.0| 0| 25|WNW| 0| 0| | |07| 23.6 | 12.0 | 17.8 | 16.8 | 7| 64| 47| 0|.........|10| 0.00| 0.0| 30.69| 30.50|30.596| 0.0| 0.0| 0| 21| NW| 0| 0| | |08| 44.9 | 12.8 | 28.9 | 29.0 | 18| 64| 36| 0|.........| 9| 0.00| 0.0| 30.47| 30.18|30.301| 0.0| 0.0| 0| 6|SSW| 0| 0| | |09| 50.5 | 30.8 | 40.7 | 40.9 | 35| 82| 24| 0|.........| 6| 0.01| 0.0| 30.35| 30.16|30.244| 0.0| 0.0| 0| 11| NW| 0| 0| | |10| 54.1 | 27.2 | 40.7 | 38.1 | 34| 87| 24| 0|1......8.| 3| 0.00| 0.0| 30.44| 30.34|30.377| 0.0| 0.0| 0| 13|NNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 66.7 | 36.4 | 51.5 | 51.9 | 50| 91| 13| 0|1........| 1| 0.00| 0.0| 30.36| 30.10|30.270| 0.0| 0.0| 0| 16| SE| 0| 0| | |12| 73.2*| 59.3 | 66.3*| 66.1 | 65| 97| 0| 1|.........| T| 0.80| 0.0| 30.06| 29.55|29.814| 0.2| 0.2|158| 24| S| 0| 0| | |13| 64.5 | 29.8 | 47.2 | 46.6 | 40| 79| 17| 0|.........| 0| 0.01| 0.0| 30.41| 29.51|29.961| 4.4| 3.4|332| 29|NNW| 0| 0| | |14| 29.8 | 22.2 | 26.0 | 25.7 | 16| 66| 39| 0|.........| 0| 0.00| 0.0| 30.60| 30.42|30.542| 0.5| 0.5|330| 28| NW| 0| 0| | |15| 37.0 | 26.6 | 31.8 | 32.0 | 27| 82| 33| 0|.........| 0| 0.00| 0.0| 30.52| 30.41|30.464| 3.9| 3.0| 3| 22| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 40.7 | 31.8 | 36.3 | 35.1 | 33| 93| 28| 0|1........| 0| 0.00| 0.0| 30.46| 30.30|30.390| 0.0| 0.0| 0| 13|NNW| 0| 0| | |17| 36.3 | 24.0 | 30.1 | 30.8 | 28| 91| 35| 0|1.......9| 3| 0.30| 3.0| 30.31| 30.15|30.246| 5.0| 4.3| 4| 25| NE| 0| 0| | |18| 37.5 | 22.9 | 30.2 | 28.6 | 20| 70| 34| 0|1.......9| 3| T | T | 30.20| 30.09|30.147| 4.4| 3.8|300| 30| NW| 0| 0| | |19| 52.3 | 24.8 | 38.5 | 36.6 | 24| 62| 26| 0|.........| T| 0.00| 0.0| 30.18| 30.06|30.115| 1.4| 1.3|245| 18| W| 0| 0| | |20| 60.2 | 32.8 | 46.5 | 45.1 | 32| 60| 18| 0|.........| 0| 0.00| 0.0| 30.11| 30.00|30.069| 0.7| 0.6|220| 20|WSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 63.6 | 33.4 | 48.5 | 48.4 | 40| 73| 16| 0|.........| 0| 0.00| 0.0| 30.22| 30.12|30.181| 0.0| 0.0| 0| 15| SE| 0| 0| | |22| 67.3 | 44.5 | 55.9 | 55.2 | 46| 71| 9| 0|.........| 0| 0.00| 0.0| 30.22| 30.01|30.127| 0.2| 0.2|135| 15| SE| 0| 0| | |23| 72.3 | 48.8 | 60.6 | 62.1 | 54| 77| 4| 0|.........| 0| 0.07| 0.0| 29.97| 29.62|29.771| 1.6| 1.4|219| 36|SSW| 0| 0| | |24| 53.4 | 38.7 | 46.1 | 46.0 | 33| 63| 19| 0|.........| 0| T | 0.0| 30.24| 29.91|30.061| 1.3| 0.6|337| 20| NE| 0| 0| | |25| 44.1 | 29.9 | 37.0 | 37.9 | 29| 71| 28| 0|.........| 0| 0.00| 0.0| 30.60| 30.25|30.441| 1.3| 1.3|314| 21|WNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 52.4 | 26.0 | 39.2 | 37.5 | 29| 74| 26| 0|.........| 0| 0.00| 0.0| 30.72| 30.59|30.647| 0.0| 0.0| 0| 12| SE| 0| 0| | |27| 66.0 | 33.1 | 49.5 | 49.6 | 42| 76| 15| 0|.........| 0| 0.00| 0.0| 30.61| 30.36|30.491| 0.2| 0.2|180| 22|SSW| 0| 0| | |28| 61.0 | 49.7 | 55.3 | 56.4 | 55| 96| 9| 0|1........| 0| 0.82| 0.0| 30.35| 30.10|30.218| 0.0| 0.0| 0| 4|ENE| 0| 0| | |29| 49.7 | 37.6 | 43.7 | 43.2 | 42| 98| 21| 0|1........| 0| 0.76| 0.0| 30.09| 29.89|29.978| 2.3| 2.1| 20| 29| NE| 0| 0| | |30| 39.2 | 27.5 | 33.3 | 35.6 | 29| 78| 31| 0|.........|.1| 0.11| 0.1| 30.30| 29.96|30.099| 3.0| 2.8|318| 29| NW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 41.0 | 24.6 | 32.8 | 31.2 | 19| 61| 32| 0|.........| 0| 0.00| 0.0| 30.40| 30.17|30.290| 0.0| 0.0| 0| 19| NW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1452.7| 869.0|------|------|---|----| 845| 1| Days | 3.98| 14.1| 30.72| 29.50|30.232| 1.4| 0.9|328| 49| NW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+0.28" or 108% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 46.9| 28.0| 37.5 | 37.3 | 29|74.6|----|----|≥.01 Inch 10| 3.98| 14.1| 26 | 4 |------|----|----|---| 4 | 1+ | | + -1.9 -3.9 -2.9 +------+---+----+----+----+------------|+0.28" or 108% of normal +------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 3| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |2007| 1|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 1.21| 28-29| 7.0 | 4 | 11 | 3-4 | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 7 | 21 | 0 |----|----| Clear 14 Partly Cloudy 8 Cloudy 9 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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: 4,9,13,17,23,28
FROST: 2,3,8,10,11,17,19,20,21,23,25,26,27,31
STATION RECORDS:
1st TEMPERATURE Minimum 15 [previous 18 1977 ]
1st TEMPERATURE Minimum High 26 [previous 34 1977]
2nd TEMPERATURE Minimum 15 [previous 21 1977]
2nd TEMPERATURE Minimum High 28 [previous 32 2010]
3rd TEMPERATURE Minimum 12 [previous 15 1979]
4th SNOWFALL 7.0" [previous TRACE 1996]
5th TEMPERATURE Minimum High 27 [previous 29 1999]
6th TEMPERATURE Minimum 7 [previous 13 1981]
6th TEMPERATURE Minimum High 24 [previous 25 1988]
7th TEMPERATURE Minimum 12 [previous 13 2014]
7th TEMPERATURE Minimum High 24 [previous 26 2014]
8th TEMPERATURE TIED Minimum 13 [previous 1981]
12th TEMPERATURE Maximum 73 [previous 71 2005]
12th TEMPERATURE Maximum Low 59 [previous 53 2006]
14th TEMPERATURE Minimum High 30 [previous 31 1982]
17th SNOWFALL 3.0" [previous 1.4" 1985]
28th RAINFALL 0.82" [previous 0.76" 1992]
29th RAINFALL 0.76" [previous 0.22" 1990]

   MONTHLY AVERAGE MAXIMUM TEMP OF 46.9 WAS  1.9 BELOW NORMAL
   MONTHLY AVERAGE MINIMUM TEMP OF 28.0 WAS  3.9 BELOW NORMAL
   MONTHLY AVERAGE TEMPERATURE  OF 37.5 WAS  2.9 BELOW NORMAL

   MAXIMUM TEMP:  73 ON THE 12th
   MINIMUM TEMP:   7 ON THE  6th

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:   0
        MAXIMUM <= 32:   7
        MINIMUM <= 32:  21
        MINIMUM <=  0:   0

   HEATING DEGREE DAYS:  854.0 
   COOLING DEGREE DAYS:    1.0

   DAYS WITH HEATING DEGREE DAYS:   30
   DAYS WITH COOLING DEGREE DAYS:    1

   PRECIP TOTAL OF  3.98" WAS 0.28" ABOVE NORMAL (108% OF NORMAL)
   
   GREATEST DAILY RAINFALL:    0.82" on the 28th   
   GREATEST 24-HOUR RAINFALL:  1.21" on the 28th-29th

   DAYS WITH MEASUREABLE PRECIP: 10 OF 31 DAYS OR 33.33% 
   AVERAGE DAILY PRECIP: 0.13"
   NORMAL DAILY PRECIP:  0.12"
                                   
   DAYS WITH PRECIP >= 0.01"    10 
   DAYS WITH PRECIP >= 0.10"     7 
   DAYS WITH PRECIP >= 0.50"     4
   DAYS WITH PRECIP >= 1.00"     1

   DAYS WITH THUNDERSTORMS:   0   
   NUMBER OF THUNDERSTORMS:   0 

   DAYS WITH SNOW:     5  
   SNOWFALL TOTAL:   14.1" 
   SEASONAL SNOWFALL 2017-2018 (beginning November 2017): 14.1" 

   CLOUDY DAYS:           9
   PARTLY CLOUDY DAYS     8 
   SUNNY/CLEAR DAYS:     14
   DAYS WITH F/GF:        9
   DAYS WITH DENSE FOG:   0 
   DAYS WITH FROST:      14

   YEAR-TO-DATE

   YEARLY  AVERAGE MAXIMUM TEMP OF 46.9 WAS 1.9 BELOW NORMAL
   YEARLY  AVERAGE MINIMUM TEMP OF 28.0 WAS 3.9 BELOW NORMAL
   YEARLY  AVERAGE TEMPERATURE  OF 37.5 WAS 2.9 BELOW NORMAL

   MAXIMUM TEMP:  73 on Janaury 12th
   MINIMUM TEMP:   7 on January  4th 

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:    0
        MAXIMUM <= 32:    7
        MINIMUM <= 32:   21
        MINIMUM <=  0:    0

   HEATING DEGREE DAYS:   854.0
   COOLING DEGREE DAYS:     1.0

   DAYS WITH HEATING DEGREE DAYS:  30
   DAYS WITH COOLING DEGREE DAYS:   1
                               
   PRECIP TOTAL OF 3.98" WAS 0.28" ABOVE NORMAL (108% OF NORMAL).

   GREATEST DAILY RAINFALL:     0.82" on January 28th  
   GREATEST 24-HOUR RAINFALL:   1.21" on January 28th-29th             
   DAYS WITH MEASUREABLE PRECIP:  10 of 31 or 33.33%

   AVERAGE DAILY PRECIP: 0.13" 
   NORMAL DAILY PRECIP:  0.12"

   DAYS WITH PRECIP >= 0.01"    10
   DAYS WITH PRECIP >= 0.10"     7
   DAYS WITH PRECIP >= 0.50"     4
   DAYS WITH PRECIP >= 1.00"     1

   DAYS WITH THUNDERSTORMS:   0
   NUMBER OF THUNDERSTORMS:   0 
                                  
   DAYS WITH SNOW  (calendar year 2018):    5
   SNOWFALL TOTAL  (calendar year 2018): 14.1" 
   SEASONAL SNOW 2017-2018 (beginning November 2017):  14.1"
    
   CLOUDY DAYS:           9
   PARTLY CLOUDY DAYS:    8 
   SUNNY/CLEAR DAYS:     14
   DAYS WITH F/GF:        9 
   DAYS WITH DENSE FOG:   0
   DAYS WITH FROST:      14
OBSERVATIONS AT 3-HOUR INTERVALS
January 2018: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 1 | JAN 2 | JAN 3 | | | | | |01| |30.38| 0.00| 20| 8| 59|33| 0| 20| |30.49| 0.00| 18| 8| 65|31| 0| 17| |30.41| 0.00| 15| 9| 78|00| 0| 0| |04| |30.41| 0.00| 19| 8| 61|31| 0| 19| |30.53| 0.00| 17| 6| 60|33| 0| 19| |30.37| 0.00| 13| 8| 80|00| 0| 0| |07| |30.44| 0.00| 19| 8| 62|31| 6| 26| |30.57| 0.00| 16| 6| 63|29| 0| 15| |30.33| 0.00| 13| 9| 84|00| 0| 0| |10| |30.50| 0.00| 22| 7| 53|31| 4| 27| |30.60| 0.00| 20| 8| 58|31| 0| 18| |30.28| 0.00| 29| 19| 66|00| 0| 0| |13| |30.44| 0.00| 24| 7| 48|31| 4| 21| |30.51| 0.00| 25| 7| 45|29| 0| 15| |30.15| 0.00| 35| 23| 61|06| 0| 18| |16| |30.42| 0.00| 26| 6| 42|29| 0| 17| |30.47| 0.00| 27| 7| 42|00| 0| 0| |30.07| 0.00| 34| 25| 69|04| 0| 16| |19| |30.47| 0.00| 23| 6| 46|31| 0| 4| |30.47| 0.00| 22| 10| 58|00| 0| 0| |29.97| 0.00| 34| 28| 76|31| 0| 21| |22| |30.48| 0.00| 18| 8| 65|00| 0| 0| |30.43| 0.00| 18| 10| 71|00| 0| 0| |29.83| 0.08| 33| 31| 94|00| 9| 20| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 4 | JAN 5 | JAN 6 | | | | | |01| |29.62| 0.08| 31| 31| 97|00| 11| 27| |29.95| 0.00| 19| 7| 60|27| 4| 22| |30.32| 0.00| 13| 3| 63|29| 0| 4| |04| |29.52| 0.08| 29| 28| 97|00| 14| 37| |30.03| 0.00| 15| 5| 64|24| 4| 19| |30.35| 0.00| 11| 2| 65|00| 0| 0| |07| |29.54| 0.05| 26| 24| 95|31| 18| 49| |30.09| 0.00| 12| 3| 67|27| 0| 4| |30.38| 0.00| 8| 1| 73|00| 0| 0| |10| |29.64| 0.04| 25| 23| 93|29| 8| 28| |30.14| 0.00| 19| 6| 57|29| 4| 26| |30.44| 0.00| 18| 5| 56|29| 0| 7| |13| |29.67| 0.03| 25| 23| 90|29| 7| 26| |30.10| 0.00| 26| 9| 48|27| 0| 22| |30.41| 0.00| 22| 6| 49|31| 0| 16| |16| |29.72| 0.00| 27| 21| 77|27| 5| 23| |30.15| 0.00| 26| 8| 45|24| 0| 22| |30.42| 0.00| 23| 4| 43|29| 0| 16| |19| |29.79| 0.00| 24| 17| 74|22| 0| 13| |30.23| 0.00| 22| 6| 51|27| 0| 13| |30.49| 0.00| 19| 3| 50|31| 0| 4| |22| |29.89| 0.00| 22| 9| 57|27| 4| 23| |30.30| 0.00| 16| 5| 62|00| 0| 0| |30.54| 0.00| 17| 3| 52|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 7 | JAN 8 | JAN 9 | | | | | |01| |30.57| 0.00| 15| 2| 54|31| 0| 21| |30.47| 0.00| 14| 8| 79|00| 0| 0| |30.17| 0.00| 38| 34| 85|00| 0| 0| |04| |30.61| 0.00| 14| 2| 59|31| 0| 14| |30.41| 0.00| 14| 9| 80|00| 0| 0| |30.17| 0.00| 38| 34| 86|00| 0| 0| |07| |30.64| 0.00| 12| 2| 64|33| 0| 6| |30.37| 0.00| 13| 9| 84|00| 0| 0| |30.19| 0.00| 38| 33| 83|00| 0| 0| |10| |30.69| 0.00| 16| 6| 64|00| 0| 7| |30.35| 0.00| 26| 14| 59|22| 0| 4| |30.25| 0.00| 43| 38| 82|00| 0| 0| |13| |30.62| 0.00| 20| 9| 60|00| 0| 0| |30.26| 0.00| 41| 20| 43|00| 0| 0| |30.21| 0.00| 48| 40| 74|04| 0| 7| |16| |30.57| 0.00| 24| 8| 52|06| 0| 6| |30.22| 0.00| 44| 25| 46|20| 0| 4| |30.25| 0.00| 50| 40| 69|00| 0| 0| |19| |30.56| 0.00| 18| 10| 70|00| 0| 0| |30.22| 0.00| 39| 25| 57|00| 0| 0| |30.31| 0.00| 41| 36| 82|00| 0| 0| |22| |30.53| 0.00| 16| 10| 74|00| 0| 0| |30.20| 0.00| 39| 26| 60|00| 0| 0| |30.34| 0.00| 34| 31| 88|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 10 | JAN 11 | JAN 12 | | | | | |01| |30.34| 0.00| 30| 28| 93|00| 0| 0| |30.34| 0.00| 38| 36| 93|00| 0| 0| |30.06| 0.00| 59| 59| 98|11| 0| 12| |04| |30.36| 0.00| 29| 27| 93|00| 0| 0| |30.33| 0.00| 37| 36| 93|00| 0| 0| |29.98| 0.00| 64| 64| 99|15| 0| 17| |07| |30.40| 0.00| 27| 26| 94|00| 0| 0| |30.33| 0.00| 37| 35| 95|00| 0| 0| |29.95| 0.00| 65| 64| 98|13| 0| 17| |10| |30.44| 0.00| 40| 39| 95|00| 0| 0| |30.36| 0.00| 54| 54|100|13| 0| 5| |29.91| 0.00| 68| 67| 96|18| 0| 15| |13| |30.36| 0.00| 54| 45| 72|09| 0| 4| |30.27| 0.00| 66| 59| 78|13| 0| 16| |29.80| 0.00| 73| 70| 90|13| 0| 7| |16| |30.36| 0.00| 46| 39| 76|06| 0| 4| |30.23| 0.00| 64| 60| 85|11| 0| 15| |29.72| 0.20| 69| 68| 97|18| 0| 15| |19| |30.38| 0.00| 42| 37| 83|00| 0| 0| |30.22| 0.00| 59| 57| 93|00| 0| 0| |29.68| 0.01| 67| 66| 98|18| 0| 5| |22| |30.37| 0.00| 39| 37| 92|09| 0| 4| |30.16| 0.00| 60| 59| 96|13| 0| 14| |29.61| 0.00| 64| 64| 99|13| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 13 | JAN 14 | JAN 15 | | | | | |01| |29.51| 0.00| 65| 65|100|00| 0| 0| |30.42| 0.00| 29| 17| 62|33| 4| 27| |30.52| 0.00| 27| 21| 76|04| 0| 14| |04| |29.59| 0.00| 58| 57| 95|20| 0| 23| |30.48| 0.00| 25| 14| 63|33| 0| 24| |30.48| 0.00| 29| 23| 78|33| 0| 19| |07| |29.71| 0.00| 58| 55| 92|20| 4| 18| |30.54| 0.00| 23| 13| 65|31| 0| 20| |30.48| 0.00| 29| 25| 83|02| 4| 18| |10| |29.89| 0.00| 48| 43| 83|33| 5| 29| |30.60| 0.00| 24| 15| 66|33| 0| 20| |30.52| 0.00| 31| 26| 84|02| 7| 19| |13| |29.99| 0.00| 41| 34| 78|33| 7| 23| |30.56| 0.00| 27| 17| 66|04| 0| 22| |30.43| 0.00| 35| 30| 82|31| 6| 21| |16| |30.11| 0.00| 39| 31| 73|33| 6| 21| |30.56| 0.00| 27| 18| 68|04| 0| 20| |30.42| 0.00| 37| 30| 76|31| 5| 16| |19| |30.24| 0.00| 36| 25| 63|33| 7| 22| |30.58| 0.00| 25| 17| 71|06| 0| 16| |30.43| 0.00| 34| 29| 82|04| 0| 14| |22| |30.35| 0.00| 34| 22| 61|33| 7| 26| |30.57| 0.00| 26| 17| 67|04| 0| 10| |30.47| 0.00| 34| 31| 89|04| 4| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 16 | JAN 17 | JAN 18 | | | | | |01| |30.42| 0.00| 34| 33| 96|04| 0| 10| |30.27| 0.00| 32| 31| 94|00| 0| 0| |30.14| 0.00| 24| 20| 86|31| 10| 23| |04| |30.43| 0.00| 33| 33| 97|00| 0| 0| |30.27| 0.00| 32| 30| 95|00| 0| 0| |30.15| 0.00| 24| 16| 72|31| 10| 30| |07| |30.46| 0.00| 32| 31| 97|00| 0| 0| |30.27| 0.00| 33| 32| 97|00| 0| 0| |30.18| 0.00| 23| 15| 71|31| 5| 22| |10| |30.46| 0.00| 34| 33| 98|00| 0| 0| |30.30| 0.00| 36| 33| 89|04| 4| 18| |30.20| 0.00| 26| 16| 66|29| 5| 19| |13| |30.39| 0.00| 38| 36| 91|00| 0| 0| |30.25| 0.00| 35| 30| 83|04| 11| 22| |30.14| 0.00| 32| 19| 57|27| 5| 17| |16| |30.34| 0.00| 41| 36| 83|02| 0| 4| |30.22| 0.03| 28| 26| 92|33| 6| 20| |30.10| 0.00| 37| 24| 57|24| 4| 17| |19| |30.34| 0.00| 37| 34| 88|00| 0| 0| |30.22| 0.04| 26| 25| 93|00| 5| 19| |30.13| 0.00| 33| 25| 74|24| 0| 16| |22| |30.32| 0.00| 33| 32| 93|00| 0| 0| |30.20| 0.03| 25| 23| 91|00| 10| 22| |30.16| 0.00| 29| 24| 80|20| 0| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.02 | 0.04 | 0.06 | 0.08 | 0.11 | 0.17 | 0.21 | 0.22 | 0.23 | 0.26 | 0.30 | 0.39 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 03 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 28 | 12 | 12 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 2304 | 1310 | 1515 | 2319 | 1530 | 2344 | 1600 | 1615 | 1630 | 2300 | 1600 | 1600 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
January 2018: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 19 | JAN 20 | JAN 21 | | | | | |01| |30.16| 0.00| 27| 23| 82|00| 0| 0| |30.07| 0.00| 36| 25| 63|20| 0| 4| |30.12| 0.00| 44| 36| 73|00| 0| 0| |04| |30.12| 0.00| 26| 22| 86|00| 0| 0| |30.07| 0.00| 34| 26| 72|20| 0| 5| |30.14| 0.00| 40| 34| 80|00| 0| 0| |07| |30.14| 0.00| 25| 22| 88|00| 0| 0| |30.09| 0.00| 33| 26| 74|22| 0| 5| |30.18| 0.00| 34| 31| 89|00| 0| 0| |10| |30.18| 0.00| 35| 24| 66|24| 0| 13| |30.10| 0.00| 44| 28| 53|29| 0| 6| |30.22| 0.00| 44| 40| 86|00| 0| 0| |13| |30.11| 0.00| 48| 24| 39|27| 7| 16| |30.02| 0.00| 57| 35| 44|24| 4| 20| |30.19| 0.00| 60| 44| 54|13| 0| 11| |16| |30.06| 0.00| 52| 25| 35|22| 4| 15| |30.02| 0.00| 60| 37| 43|24| 0| 19| |30.16| 0.00| 63| 47| 55|18| 0| 7| |19| |30.08| 0.00| 42| 26| 52|00| 0| 0| |30.08| 0.00| 51| 37| 60|00| 0| 0| |30.21| 0.00| 53| 43| 68|15| 0| 6| |22| |30.10| 0.00| 37| 23| 57|00| 0| 0| |30.11| 0.00| 47| 36| 67|00| 0| 0| |30.20| 0.00| 48| 41| 77|11| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 22 | JAN 23 | JAN 24 | | | | | |01| |30.19| 0.00| 51| 42| 72|18| 0| 7| |29.97| 0.00| 53| 51| 91|13| 0| 5| |29.91| 0.00| 45| 39| 79|00| 0| 0| |04| |30.18| 0.00| 50| 41| 70|22| 0| 6| |29.87| 0.00| 57| 56| 96|13| 0| 5| |29.97| 0.00| 42| 34| 74|27| 0| 7| |07| |30.18| 0.00| 46| 39| 78|13| 0| 5| |29.78| 0.00| 61| 59| 95|20| 0| 16| |30.04| 0.00| 40| 32| 74|27| 0| 7| |10| |30.22| 0.00| 54| 46| 74|00| 0| 0| |29.73| 0.00| 64| 64| 97|15| 0| 15| |30.08| 0.00| 47| 34| 61|27| 4| 16| |13| |30.14| 0.00| 67| 50| 55|15| 0| 12| |29.65| 0.00| 71| 66| 84|20| 4| 24| |30.04| 0.00| 53| 33| 47|24| 0| 14| |16| |30.09| 0.00| 65| 50| 57|18| 0| 14| |29.62| 0.00| 72| 57| 60|20| 5| 26| |30.04| 0.00| 52| 32| 46|27| 0| 14| |19| |30.08| 0.00| 56| 48| 73|00| 0| 0| |29.72| 0.00| 64| 46| 52|27| 0| 7| |30.12| 0.00| 48| 35| 59|00| 0| 0| |22| |30.05| 0.00| 54| 49| 84|15| 0| 10| |29.84| 0.00| 57| 37| 48|27| 0| 13| |30.18| 0.00| 43| 31| 61|04| 4| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 25 | JAN 26 | JAN 27 | | | | | |01| |30.25| 0.00| 39| 33| 79|31| 0| 4| |30.59| 0.00| 29| 24| 82|00| 0| 0| |30.61| 0.00| 36| 31| 84|00| 0| 0| |04| |30.27| 0.00| 39| 34| 83|00| 0| 0| |30.63| 0.00| 27| 24| 89|00| 0| 0| |30.58| 0.00| 35| 30| 82|00| 0| 0| |07| |30.37| 0.00| 34| 30| 87|00| 0| 0| |30.67| 0.00| 26| 24| 90|00| 0| 0| |30.59| 0.00| 33| 30| 86|00| 0| 0| |10| |30.46| 0.00| 39| 29| 65|33| 4| 20| |30.72| 0.00| 38| 32| 79|00| 0| 0| |30.57| 0.00| 48| 45| 88|18| 0| 11| |13| |30.45| 0.00| 43| 27| 53|29| 5| 21| |30.66| 0.00| 49| 33| 53|00| 0| 0| |30.47| 0.00| 65| 48| 54|20| 0| 22| |16| |30.47| 0.00| 43| 28| 54|31| 4| 16| |30.62| 0.00| 52| 33| 48|13| 0| 12| |30.40| 0.00| 64| 49| 58|20| 0| 12| |19| |30.55| 0.00| 37| 26| 65|04| 0| 5| |30.65| 0.00| 41| 33| 73|15| 0| 4| |30.41| 0.00| 58| 51| 76|00| 0| 0| |22| |30.60| 0.00| 32| 26| 77|00| 0| 0| |30.64| 0.00| 37| 31| 77|00| 0| 0| |30.39| 0.00| 56| 50| 81|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 28 | JAN 29 | JAN 30 | | | | | |01| |30.35| 0.00| 55| 52| 87|00| 0| 0| |30.09| 0.13| 49| 49| 98|00| 0| 0| |29.96| 0.00| 39| 38| 96|29| 0| 16| |04| |30.30| 0.00| 54| 52| 94|00| 0| 0| |30.03| 0.07| 47| 47| 99|02| 0| 4| |29.97| 0.00| 38| 37| 96|00| 0| 0| |07| |30.30| 0.01| 54| 53| 96|00| 0| 0| |30.01| 0.03| 45| 44| 99|02| 0| 4| |30.01| 0.00| 37| 36| 98|00| 0| 0| |10| |30.29| 0.04| 57| 57| 99|00| 0| 0| |30.00| 0.00| 44| 43| 98|04| 5| 27| |30.08| 0.03| 35| 34| 96|00| 4| 21| |13| |30.20| 0.03| 61| 60| 98|00| 0| 0| |29.90| 0.01| 43| 43| 98|04| 4| 23| |30.08| 0.00| 36| 30| 79|29| 11| 27| |16| |30.15| 0.03| 60| 59| 97|00| 0| 0| |29.90| 0.01| 42| 41| 98|00| 5| 25| |30.10| 0.00| 38| 26| 62|31| 4| 22| |19| |30.14| 0.03| 58| 57| 97|00| 0| 0| |29.96| 0.03| 39| 38| 97|00| 5| 27| |30.20| 0.00| 34| 23| 63|00| 0| 5| |22| |30.12| 0.15| 53| 52| 95|06| 0| 4| |29.97| 0.01| 39| 39| 97|33| 0| 24| |30.28| 0.00| 30| 16| 55|33| 0| 21| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 31 | | | | | | | |01| |30.32| 0.00| 27| 14| 59|31| 0| 19| | | |04| |30.36| 0.00| 26| 15| 64|31| 0| 14| | | |07| |30.39| 0.00| 25| 15| 66|00| 0| 0| | | |10| |30.38| 0.00| 29| 15| 56|04| 0| 4| | | |13| |30.31| 0.00| 35| 16| 45|00| 0| 0| | | |16| |30.23| 0.00| 41| 23| 49|00| 0| 0| | | |19| |30.20| 0.00| 35| 24| 66|27| 0| 4| | | |22| |30.19| 0.00| 33| 25| 74|18| 0| 7| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
WEATHER NOTES SUMMARY BY HOURS
+--+-----------------------------+---------+ Wind Direction: Directions are those from which the wind is blowing, | | Averages | | indicated in tens of degrees from true North: i.e., 09 for East, 18 for | +----+------+---+---+---+-----+Resultant| South, 27 for West, and 00 or 36 for North. | | | | | | | | | Wind Speed: The observed one-minute average speed in miles-per-hour. | | | | T | | | | Wind | Wind Gust: The maximum instantaneous wind speed for the ten minute-period | | | | e | | % | W +----+----+ preceding the observation. | | | | m | D | | i | D | | Rainfall Rate: The instantaneous rainfall rate at time of observation, | | S | P | p | e | H | n | i | | calculated by timing consecutive 0.01" pulses from the electronic rain | | u | r | e | w | u | d | r | | gauge and interpolating this rate for one hour. | | n | e | r | | m | | e | | | | s | s | a | P | i | S | c | S | | H| h | s | t | o | d | p | t | p | | o| i | u | u | i | i | e | i | e | | u| n | r | r | n | t | e | o | e | | r| e | e | e | t | y | d | n | d | +--+----+------+---+---+---+-----+----+----+ |01| |30.224| 34| 28| 80| 0.9| 33 | 0.8| |04| |30.224| 33| 27| 81| 0.9| 33 | 0.7| |07| |30.245| 31| 27| 83| 1.2| 31 | 0.9| |10| |30.278| 37| 30| 77| 1.7| 33 | 1.2| |13| |30.219| 44| 32| 65| 2.4| 31 | 1.5| |16| |30.201| 44| 32| 63| 1.5| 30 | 1.0| |19| |30.230| 39| 30| 71| 0.5| 35 | 0.5| |22| |30.240| 36| 29| 76| 1.2| 36 | 1.0| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
January 2018: 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| | | | | | | | | | | | | | | | | | | |0.04|0.08|0.08|0.08|0.12|03 04|0.08|0.08|0.08|0.08|0.08|0.05|0.05|0.03|0.04|0.04|0.03|0.03|0.03| | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | |0.01| | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | |0.18| |0.20|0.04|0.05|0.01|0.10|0.01| | |0.21|12 13| |0.01| | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | |0.03|0.06|0.04|0.04|0.04|0.03|0.03|0.02|0.01|17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | |0.02| |0.05| | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| |0.01| | | |0.03|0.01|0.02|0.05|0.04|0.02|0.02|0.03|0.02|0.03|0.03|0.02|0.01|0.03|0.05|0.09|0.15|0.10|0.06|28 29|0.13|0.06|0.07|0.07|0.05|0.03|0.03|0.01|0.04| |0.01|0.01|0.01| |0.04|0.01|0.02|0.04|0.03|0.05|0.03|0.01| |0.01|29 30| | | | | | | | |0.01|0.03|0.02|0.05| | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.21|0.16|0.15|0.15|0.13|0.11|0.09|0.07|0.16|0.11|0.13|0.11|0.07|0.20|0.07|0.27|0.14|0.14|0.11|0.28|0.24|0.27|0.20|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.)