August 1998
Graphs follow the text summary!
TUE, SEP 1, 1998 12:01 AM EDT
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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 August 1998.
Time is EDT.
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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 81 -6 70 -1 75.5 -4 10.5 N 19 5.6NE PC BREEZY LESS HUMID
2 81 -7 69 -1 75.0 -4 10.0 NE 23 5.8NE PC BREEZY PLEASANT
3 81 -7 70 -1 75.5 -4 10.5 NE 21 6.1NE PC BREEZY PLEASANT
4 81 -9 68 -3 74.5 -6 9.5 NE 22 5.6NE SU BREEZY PLEASANT
5 83 -6 64 -7 73.5 -7 8.5 NE 18 4.9NE PC BREEZY PLEASANT
6 81 -6 72 +1 76.5 -3 11.5 N 18 5.6N C MORE HUMID
7 84 -2 75 +4 79.5 +1 14.5 T NE 16 5.1NE C HUMID -SHRA
8 87 0 76 +6 81.5 +3 16.5 N 16 3.4NE PC HUMID
9 88 0 76 +5 82.0 +3 17.0 NE 15 1.9NE PC HUMID DST LTG
10 91 +3 73 +2 82.0 +2 17.0 0.91 S 27 3.0SW PC HOT SHRA TSRA(2) BR
11 87 -1 72 +1 79.5 0 14.5 SW 16 3.6NNE PC -BR -HZ HUMID
12 88 +1 74 +4 81.0 +3 16.0 N 16 3.7NNE PC -BR FROPA HZ HUMID
13 86 0 75 +5 80.5 +2 15.5 NE 14 3.0NNE PC HZ
14 86 0 70 -1 78.0 0 13.0 NE 16 2.2NE PC HZ
15 84 -2 73 +3 78.5 +1 13.5 0.02 NE 16 3.0NNE PC -HZ SHRA
16 88 +1 73 +3 80.5 +2 15.5 0.16 NE 13 0.9NNE PC TSRA SHRA BR
17 93 +5 72 +1 82.5 +3 17.5 SSW23 5.1SW PC DST LTG
18 93 +8 75 +4 84.0 +6 19.0 SW 17 4.7SSW PC BR HZ HOT
19 80 -4 69 -1 74.5 -2 9.5 N 24 7.6N PC FROPA
20 79 -5 60 -9 69.5 -7 4.5 N 18 3.0NE SU PLEASANT
21 88 +4 59 -9 73.5 -2 8.5 WSW16 2.3WSW SU -BR(AM) WARMER
22 93 +8 66 -1 79.5 +4 14.5 SW 14 4.3SW SU
23 96 +11 70 +3 83.0 +7 18.0 SSW18 5.2SW SU HZ HOT
24 95 +10 73 +6 84.0 +8 19.0 SW 18 5.4SSW SU -HZ HOT
25 95 +10 74 +7 84.5 +8 19.5 SW 20 4.6SW PC HOT
26 89 +3 78 +10 83.5 +7 18.5 T NE 24 3.6NE PC -HZ SHRA
27 82 -6 72 +4 77.0 -1 12.0 1.98 NNE63 13.4NE C +SHRA BR WINDY
TROP STORM BONNIE
28 87 -1 71 +2 79.0 +1 14.0 0.46 N 35 7.3N PC BR SHRA HZ HUMID
29 93 +6 73 +3 83.0 +5 18.0 2.53 SW 30 2.8SW PC +TSRA HZ BR HUMID
30 85 -1 73 +5 79.0 +2 14.0 0.10 N 19 PC DST LTG SHRA BR HZ HUMIE
31 89 +3 74 +6 81.5 +5 16.5 T - 12 PC HZ BR DST LTG
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SUMMARY OF AUGUST 1998:
TEMPERATURE:
Monthly mean: High = 86.9 Low = 71.3 Mean = 79.1
Departure < Normal: High = +0.4 Low = +1.8 Mean = +1.1
Degree Days: Heating = 0.0 Cooling = 436.5
Number of Days Using: Heating = 0 Cooling = 31
Days with maximum temperature >= 90: 8
Days with maximum temperature <= 32: 0
Days with minimum temperature <= 32: 0
Days with minimum temperature <= 0: 0
PRECIPITATION:
Total month = 6.16" Departure from Normal = + 1.13"
Normal month (to date) = 5.03" or 122%
Average daily = 0.20"
Normal daily = 0.16"
Number of days with measurable precipitation = 7
Year-to-date = 38.67" Departure = + 5.59" or 117% of normal
Maximum for August = 15.06" in 1992 --> (Since
Minimum for August = 1.33" in 1995 --> (1976)
Number of days with 0.01" or more: 7 Snowfall
Number of days with 0.10" or more: 6 August total = 0.00"
Number of days with 0.50" or more: 3 August max = 0.00" in
Number of days with 1.00" or more: 2 ----
DAILY EXTREMES: Low temperature = 59 on the 21st
High temperature = 96 on the 23rd
Maximum daily precipitation = 2.53" on the 29th
Maximum 24-hour rainfall = 2.63" on the 29th-30th
Maximum barometric pressure = 30.286" on the 20th
Minimum barometric pressure = 29.526" on the 27th
WIND:
Maximum wind gust = NE 63 MPH on the 27th
NUMBER OF:
Days Cloudy: 3 Days with thunderstorms: 3
Days Partly Cloudy: 22 # of Thunderstorms: 4
Days Clear/Sunny: 6 Days with some type of snowfall: 0
Days with Fog/Ground Fog: 11
Days with Dense Fog: 0
Days with Frost: 0
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YEAR-TO-DATE: (through August 31st, 1998)
Temperatures Degree Days Precipitation
Mean maximum: 72.8 (+1.8) Heating: Aqueous: 38.67" (DEP +5.59") 117%
Mean minimum: 55.8 (+3.6) 1728.0 Maximum monthly: 7.60"/FEB.
Mean monthly: 64.3 (+2.7) Cooling: Minimum monthly: 3.33"/JULY
1557.0
Highest: 99, July 22
Snowfall: 0.00"
Lowest: 24, January 1 Maximum daily: 0.00"
Days with max temperature >= 90: 37 Maximum monthly: 0.00"
Days with max temperature <= 32: 0
Days with min temperature <= 32: 13 Days with some type of
Days with temperature <= 0: 0 snowfall: 2
Days with measurable
Number of: precipitation: 85 or 34.98%
Days using Heating: 112
Days using Cooling: 130 Days with thunderstorms: 23
Days Cloudy: 43 Number of thunderstorms: 26
Days Partly Cloudy: 150
Days Clear/Sunny: 50 Greatest 24-hour period
Days with fog/ground fog: 106 rainfall: 3.86"/FEB. 4th
Wind (Highest Gust): NNE 63 miles per hour, August 27th
Barometer: Highest 30.667" on January 1st
Lowest: 29.198" on February 4th
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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;
VBL, variable wind directions; TS, tropical storm
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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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In the graphs below, data is only shown through
the 29th.
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