----------------------------------------------------------------------------- MONTHLY SUMMARY OF CLIMATOLOGICAL DATA - PORTSMOUTH, VIRGINIA Portsmouth Weather Records Service Portsmouth, Virginia 23702-2017 (3 miles south / West Cradock Section) ----------------------------------------------------------------------------- Monthly summary of Local Climatological Data for Portsmouth, Virginia, West Cradock Section, during the month of August 1996. Time is EDT. ----------------------------------------------------------------------------- D HT DN LT DN MT DN HDD CDD PREC WD WS SC WXR TYPE/REMARKS ----------------------------------------------------------------------------- 1 80 -8 68 -3 74.0 -5 9.0 1.55 SE 20 C RW DSTLTG TRW(2) 2 84 -4 66 -4 75.0 -4 10.0 ESE18 PC FROPA 3 81 -7 72 0 76.5 -3 11.5 0.83 SSE16 PC TRW RW F 4 84 -6 70 -1 77.0 -3 12.0 ENE16 PC FROPA 5 82 -8 69 -2 75.5 -5 10.5 N 14 PC 6 87 -1 65 -6 76.0 -3 11.0 ESE18 PC GF 7 84 -3 65 -6 74.5 -4 9.5 ESE17 PC GF 8 88 +1 63 -7 75.5 -3 10.5 ESE17 PC GF 9 87 -1 67 -4 77.0 -2 12.0 S 18 PC GF WSW18 10 83 -5 68 -3 75.5 -4 10.5 N 18 PC FROPA DRIER 11 82 -6 63 -8 72.5 -7 7.5 N 14 PC GF NE 14 12 83 -3 65 -5 74.0 -4 9.0 0.36 ESE23 PC RW F 13 75 -10 68 -2 71.5 -6 6.5 0.89 NW 18 C TRW RW F L R- 14 75 -11 67 -3 71.0 -7 6.0 T N 14 C L-RW-F 15 81 -5 63 -6 72.0 -5 7.0 NE 13 -PC GF (AM) 16 89 +3 62 -7 75.5 -2 10.5 0.02 SE 21 PC GF(AM) DST LTG RW-(PM) 17 86 -1 66 -4 76.0 -3 11.0 0.01 SSE21 PC RW- DST LTG 18 86 +2 67 -3 76.5 -1 11.5 N 14 PC GF(AM) H 19 84 0 67 -3 75.5 -1 10.5 NNE15 -PC GF H 20 82 -2 65 -4 73.5 -3 8.5 E 16 PC GF(AM) H 21 84 0 59 -9 71.5 -4 6.5 ESE18 -PC H 22 90 +6 67 0 78.5 +3 13.5 SE 18 PC H HOT HUMID DSTLTG 23 90 +6 69 +2 79.5 +4 14.5 SSW15 PC H HOT HUMID 24 93 +8 69 +2 81.0 +5 16.0 0.13 WNW21 PC H HOT HUMID TRW(2) F 25 83 -2 70 +3 76.5 +1 11.5 0.02 ESE13 C H F+ RW- TRW- 26 79 -7 69 +2 74.0 -3 9.0 0.22 SE 18 PC F+(AM) H TRW RW 27 84 -4 68 0 76.0 -2 11.0 0.22 N 22 PC F H RW TRW 28 82 -6 67 -2 74.5 -4 9.5 0.01 NNE15 PC F H RW-(AM) 29 84 -3 66 -4 75.0 -3 10.0 NNE15 PC F-H 30 84 -2 66 -2 75.0 -2 10.0 ESE15 PC H 31 80 -6 65 -3 72.5 -4 7.5 NE 25 PC H- ----------------------------------------------------------------------------- SUMMARY OF AUGUST 1996: TEMPERATURE: Monthly mean: High = 83.7 Low = 66.5 Mean = 75.1 Departure < Normal: High = -2.8 Low = -3.0 Mean = -2.9 Degree Days: Heating = 0.0 Cooling = 313.5 Number of Days Using: Heating = 0 Cooling = 31 Days with maximum temperature >= 90: 3 Days with maximum temperature <= 32: 0 Days with minimum temperature <= 32: 0 Days with minimum temperature <= 0: 0 PRECIPITATION: Total month = 4.26" Departure < Normal = - 0.90" Normal month (to date) 5.16" or 83% Average daily = 0.14" Normal daily = 0.17" Number of days with measurable precipitation = 11 Year-to-date = 41.16" Departure = +7.64" or 123% 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: 11 Snowfall Number of days with 0.10" or more: 7 August total = 0.00" Number of days with 0.50" or more: 3 August maximum = 0.00" Number of days with 1.00" or more: 1 DAILY EXTREMES: Low temperature = 59 on the 21st High temperature = 93 on the 24th Maximum daily precipitation = 1.55" on the 1st Maximum 24-hour rainfall = 1.55" on the 1st Maximum wind gust = NE 25 mph on the 31st Maximum barometric pressure = 30.351" on the 20th Minimum barometric pressure = 29.840" on the 13th NUMBER OF: Days Cloudy: 3 Days with thunderstorms: 7 Days Partly Cloudy: 28 # of Thunderstorms: 9 Days Clear/Sunny: 0 Days with some type of snowfall: 0 Days with Fog/Ground Fog: 18 Days with Dense Fog: 2 ---------------------------------------------------------------------------- YEAR-TO-DATE: (through August 31, 1996) Temperatures Degree Days Precipitation Mean maximum: 69.7 (-1.2) Heating: 2389.5 Aqueous: 41.16" (DEP +7.65") Mean minimum: 50.9 (-1.1) Cooling: 1243.0 Maximum monthly: 11.80"/JUL. Mean monthly: 60.3 (-1.1) Minimum monthly: 2.65"/FEB. Highest: 98, May 20th Snowfall: 15.90" Lowest: 8, February 5th Maximum daily: 4.50"/JAN. 6 Days with maximum temperature >= 90: 28 Maximum monthly: 8.00"/FEB. Days with maximum temperature <= 32: 9 Seasonal total: 16.20" Days with minimum temperature <= 32: 45 Days with some type of Days with temperature <= 0: 0 snowfall: 15 Days with measurable Number of: precipitation: 97 or 40% Days using Heating: 126 Days using Cooling: 118 Days with thunderstorms: 35 Days Cloudy: 43 Number of thunderstorms: 47 Days Partly Cloudy: 167 Days Clear/Sunny: 34 Greatest 24-hour period Days with fog/ground fog: 90 rainfall: 3.43"/July 18-19th Wind (Highest Recorded Wind Gust): SSW 64 miles per hour, January 19th Barometer: Highest 30.937" on March 10th; Lowest: 29.196" on March 19th --------------------------------------------------------------------------- DENOTATIONS (Weather/sky conditions) Intensity Markings A Hail GF Ground fog RW Rainshower Precipitation: AP Small hail GL Glaze S Snow - Light B Blowing H Haze SG Snow granules + Heavy C Cloudy IP Ice pellets SP Snow pellets Sky Condition: CL Clear K Smoke SU Sunny -Thin or Partial D Dust L Drizzle TRW Thundershower Departures from F Fog LTG Lightning T Thunderstorm Norms: FR Frost PC Partly Cloudy X Obscurred Sky - below; + above R Rain Y Spray ZL Freezing drizzle ZR Freezing rain ----------------------------------------------------------------------------- OTHER DENOTATIONS: NA, not available; NR, not recorded; TEMP, temperature; MAX, maximum; MIN, minimum; T, trace of precipitation; INOP, inopera- tive 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; PM afternoon hours; EVE evening hours; E estimated; VBL, variable wind directions ----------------------------------------------------------------------------- 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 HB High Barometer Reading (Inches) DN Departure from Normal of High, LB Low Barometer Reading (Inches) Low or Mean Temperature SC Dominant Daily Sky Cover HDD Heating Degree Days WXR TYPES Observed Weather Conditions CDD Cooling Degree Days and Remarks ----------------------------------------------------------------------------- NOTES: All temperatures are in degrees fahrenheit. All precipitation measurements are in inches. All wind speeds are in miles per hour. -----------------------------------------------------------------------------