November & Yearly 1999
Graphs follow the text summary!
NOVEMBER 1999 WAS THE DRIEST MONTH OF THE YEAR AND THE 2ND DRIEST
NOVEMBER AFTER THE 1.18" WHICH FELL IN 1993.
FOUR STATION RECORDS WERE ESTABLISHED:
ON THE 23RD, THE LOW TEMPERATURE OF 58 WAS A TIE OF MAX MINIMUM TEMPERATURE
ON THE 24TH, THE LOW TEMPERATURE OF 57 WAS A TIE OF MAX MINIMUM TEMPERATURE
ON THE 25TH, THE LOW TEMPERATURE OF 59 WAS A NEW MAX MINIMUM TEMPERATURE
ON THE 26TH, THE LOW TEMPERATUER OF 59 WAS A NEW MAX MINIMUM TEMPERATURE
WED, DECEMBER 1, 1999 8:05 AM EST
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MONTHLY SUMMARY OF CLIMATOLOGICAL DATA - PORTSMOUTH, VIRGINIA
Portsmouth Weather Records Service
Portsmouth, Virginia 23702-2017
(3 miles south / West Cradock Section)
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Monthly summary of Local Climatological Data for Portsmouth,
Virginia, West Cradock Section, during the month of November 1999.
Time is EST.
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D HT DN LT DN MT DN HDD CDD PREC WD WS WAS SC WXR TYPE/REMARKS
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1 77 +10 57 +6 67.0 +8 2.0 NE 12 SSE0.7 SU -BR(AM)
2 73 +5 58 +7 65.5 +6 0.5 0.63 S 21 S 4.9 PC SHRA FROPA BR
3 58 -8 42 -5 50.0 -6 15.0 W 27 W 7.9 SU WINDY COLDER
4 58 -8 35 -11 46.5 -10 18.5 W 17 W 2.5 SU -FROST COOL
5 67 +3 39 -8 53.0 -3 12.0 S 16 S 3.4 SU
6 73 +10 47 +2 60.0 +6 5.0 W 17 W 3.7 SU MILD
7 62 -1 45 +2 53.5 0 11.5 N 21 N 3.6 SU FROPA(AM)
8 58 -5 44 +1 51.0 -2 14.0 ENE18 NE 2.8 SU CHILLY
9 72 +8 44 0 58.0 +4 7.0 SSW15 S 3.3 SU MILD
10 76 +10 60 +14 68.0 +12 3.0 SW 24 SSW6.0-PC HZ MILD
11 65 +3 56 +12 60.5 +7 4.5 0.04 NNE23 NNE6.0 PC HZ-BR FROPA SHRA
12 62 +5 50 +7 56.0 +6 9.0 NE 21 NE 4.2 PC
13 63 +4 47 +7 55.0 +5 10.0 W 16 NNE1.8-PC BR HZ
14 76 +15 52 +11 64.0 +13 1.0 N *30 SSW5.8 SU BR HZ FROPA(EVE)
*NEW STATION DAILY MAX WIND GUST
15 58 -4 45 +1 51.5 -2 13.5 N 27 N 7.0 SU BREEZY COLDER
16 54 -7 38 -5 46.0 -6 19.0 NW 25 N 7.0 SU WINDY COLD
17 50 -11 37 -5 43.5 -8 21.5 N 23 N 4.7 SU COLD
18 59 -3 34 -7 46.5 -5 18.5 W 13 S 1.1 SU FROST
19 68 +6 38 -3 53.0 +1 12.0 S 15 SSE2.7 SU -FROST(AM)
20 72 +9 56 +12 64.0 +10 1.0 0.01 W 17 S 2.8 PC -SHRA HUMID
21 73 +12 53 +11 63.0 +11 2.0 NE 15 NE 1.4 PC BR(AM)
22 74 +16 60 +18 67.0 +17 2.0 NE 17 NE 2.8 PC +FG(PM) FU
23 63 +4 *58 +16 60.5 +10 4.5 T N 14 NNE4.2 C +FG DZ BR HUMID
*TIE OF MAX MINIMUM TEMPERATURE FIRST SET IN 1992
24 68 +8 *57 +15 62.5 +11 2.5 0.01 N 11 NE 2.2 PC BR SHRA VERY HUMID
*TIE OF MAX MINIMUM TEMPERATURE FIRST SET IN 1979
25 70 +12 *59 +19 64.5 +15 0.5 0.13 N 12 SSW1.0 PC BR SHRA MILD
*NEW MAX MINIMUM TEMPERATURE (PREVIOUSLY 57 IN 1992)
26 72 +10 *59 +17 65.5 +13 0.5 0.40 S 22 S 5.2 PC SHRA MILD -BR
*NEW MAX MINIMUM TEMPERATURE (PREVIOUSLY 58 IN 1979)
27 66 +2 48 +3 57.0 +3 8.0 0.09 N 26 N 5.2 PC SHRA -BR FROPA
28 59 -7 45 -1 52.0 -4 13.0 N 18 NNE3.7 SU COLDER
29 54 -5 42 +1 48.0 -2 17.0 N 24 NNE4.2 SU COLDER FROPA(EVE)
30 46 -9 36 -2 41.0 -5 24.0 N 29 N 10.1 PC WINDY COLD
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SUMMARY OF NOVEMBER 1999:
TEMPERATURE:
Monthly mean: High = 64.9 Low = 48.0 Mean = 56.5
Departure < Normal: High = +2.8 Low = +4.4 Mean = +3.6
Degree Days: Heating = 264.5 Cooling = 8.0
Number of Days Using: Heating = 25 Cooling = 5
Days with maximum temperature >=100: 0
Days with maximum temperature >= 90: 0
Days with maximum temperature <= 32: 0
Days with minimum temperature <= 32: 0
Days with minimum temperature <= 0: 0
PRECIPITATION:
Total month = 1.31" Departure from Normal = - 2.00"
Normal month (to date) = 3.31" or 40%
Average daily = 0.04"
Normal daily = 0.11"
Number of days with measurable precipitation = 7
Year-to-date = 74.60" Departure = +29.59" or 166% of normal
Maximum for November = 6.22" in 1985 -->(Since
Minimum for November = 1.18" in 1993 --> 1976)
Number of days with 0.01" or more: 7 Snowfall
Number of days with 0.10" or more: 3 November total = 0.00"
Number of days with 0.50" or more: 1
Number of days with 1.00" or more: 0 November max = 1.8" in 1987
DAILY EXTREMES: Low temperature = 34 on the 18th
High temperature = 77 on the 1st
Maximum daily precipitation = 0.63" on the 2nd
Maximum 24-hour rainfall = 0.63" on the 2nd
Maximum barometric pressure = 30.530" on the 5th
Minimum barometric pressure = 29.486" on the 2nd
Frozen precip = 0.00"
WIND:
Maximum wind gust = N 30 MPH on the 14th
Average wind = N 4.1 MPH
NUMBER OF:
Days Cloudy: 1 Days with thunderstorms: 0
Days Partly Cloudy: 13 # of Thunderstorms: 0
Days Clear/Sunny: 16 Days with some type of snowfall: 0
Days with Fog/Ground Fog: 12
Days with Dense Fog: 3
Days with Frost: 3
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YEAR-TO-DATE: (through November 30th, 1999)
Temperatures Degree Days Precipitation
Mean maximum: 71.4 (+0.3) Heating: Aqueous: 74.60" (DEP +29.58") 166%
Mean minimum: 54.6 (+2.0) 2359.5 Maximum monthly: 21.91"/SEP.
Mean monthly: 63.0 (+1.1) Cooling: Minimum monthly: 1.31"/NOV.
1688.5
Highest: 101, July 6
Snowfall: TRACE"
Lowest: 17, January 6 Maximum daily: TRACE" (Jan. 9,10 & Mar. 8)
Days with max temperature >= 90: 43 Maximum monthly: TRACE" (Jan. & Mar.)
Days with max temperature <= 32: 1
Days with min temperature <= 32: 21 Days with some type of
Days with temperature <= 0: 0 snowfall: 8
Days with measurable
Number of: Precipitation: 111 or 33.23%
Days using Heating: 169
Days using Cooling: 161 Days with thunderstorms: 26
Days Cloudy: 74 Number of thunderstorms: 33
Days Partly Cloudy: 182
Days Clear/Sunny: 88 Greatest 24-hour daily rainfall:
Days with fog/ground fog: 126 7.82"/October 17th, 1999
Days with dense fog: NR Greatest 24-hour period rainfall:
10.03"/October 17th-18th, 1999
Wind (Highest Gust): WNW 60 miles per hour, September 16th
Barometer: Highest 30.807" on January 31st
Lowest: 28.988" on September 16th
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METAR DENOTATIONS:
BC Patches
BL Blowing
BR Fog with visibilites > 5/8 but <=6 statute miles and below
to 5/8 mile
DU Dust (widespread)
DS Duststorm
DZ Drizzle
FC Funnel Cloud
FC+ Tornado/waterspout
FG Fog with visibility <= 5/8 statute miles
FU Smoke
FZDZ Freezing drizzle
FZRA Freezing rain
FZFG Freezing fog
GR Hail
GS Small hail
HZ Haze
IC Ice crystals
PE Ice pellets
PY Spray
RA Rain
SA Sand
SS Sandstorm
PO Sand or dust whirls
SG Snow granules
SH Shower
SHRA Shower of rain
SHSN Shower of snow
SHPE Shower of ice pellets
SHGR Shower with hail
SHGS Shower with small hail
SM Statute miles
SN Snow
SQ Squalls
TS Thunderstorm
TSGR Thunderstorm with hail
TSGS Thunderstorm with small hail
TSPE Thunderstorm with ice pellets
TSRA Thunderstorm with rain
TSSN Thunderstorm with snow
UP Unknown precipitation
VA Volcanic ash
VC Vicinity
VV Used for obscurred sky
METAR Qualifiers: (now placed in FRONT of code)
- Light
+ Heavy
DR Low drifting
M Below (as in -x.x degrees)
MI Shallow
PR Partial
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PWRS DENOTATIONS: SU/CL = Clear sky; PC = Partly cloudy sky; C =
cloudy sky; NA, not available; NR, not recorded; TEMP, temperature;
MAX, maximum; MIN, minimum; T, trace of precipitation; INOP,
inoperative equipment; MPH, miles per hour; DN, departure from normal;
DEP, departure; YR, year; NORM, normal; DST LTG, distant lightning;
FROP or FROPA, frontal passage; AM morning; AFT afternoon hours;
EVE evening hours; PM evening hours; E estimated; OCNL, occasional
VBL, variable wind directions; TS, tropical storm; *tied station record
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COLUMN DENOTATIONS:
D Date PREC Precipitation
HT High Temperature WS Maximum Wind Speed (Gust)
LT Low Temperature WD Direction of Maximum Wind Gust
MT Mean Temperature WAS Average Wind Speed & Dominant
Direction
HB High Barometer Reading (Inches)
DN Departure from Normal LB Low Barometer Reading (Inches)
SC Dominant Daily Sky Cover
HDD Heating Degree Days WXR TYPES Observed Weather
CDD Cooling Degree Days Conditions and Remarks
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NOTES: All temperatures are in degrees fahrenheit. All precipita-
tion measurements are in inches. All wind speeds are in miles per
hour.
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