----------------------------------------------------------------------------- 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 July 1996. Time is EDT. ----------------------------------------------------------------------------- D HT DN LT DN MT DN HDD CDD PREC WD WS SC WXR TYPE/REMARKS ----------------------------------------------------------------------------- 1 81 -5 70 +1 75.5 -2 10.5 NNE19 PC F H 2 92 +5 70 +1 81.0 +3 16.0 T ESE16 PC F-H- DST LTG RW- W 16 3 87 -1 64 -5 75.5 -3 10.5 0.76 N 36 PC F-H-RW- TRW+ FROPA 4 78 -9 61 -9 69.5 -9 4.5 NW 27 PC COOLER 5 85 -3 58 -12 71.5 -7 6.5 WSW18 PC TIED RECORD LOW 6 89 0 69 -2 79.0 -1 14.0 S 18 PC H- 7 93 +3 68 -3 80.5 0 15.5 SSW18 PC H- 8 94 +4 73 +4 83.5 +4 18.5 0.53 NW 28 PC H- HOT HUMID TRW 9 92 +1 71 0 81.5 0 16.5 0.17 WSW18 PC F TRW-(AM) RW H 10 82 -8 67 -5 74.5 -6 9.5 N 21 PC FROPA 11 80 -9 65 -6 72.5 -8 7.5 T SE 19 PC RW- (LATE EVE) 12 79 -11 70 -2 74.5 -7 9.5 2.78 ESE46 C RW+TRW+F WINDY EVE 13 88 -3 70 -4 79.0 -3 14.0 0.61 E 54 C RW+TRW F HURRICANE BERTHA PASSES 25 MILES WEST OF STATION; MINIMUM BAROMETRIC PRESSURE 29.373" 14 93 -2 74 0 83.5 +1 18.5 0.19 S 28 PC H TRW MUGGY 15 88 -1 74 +1 81.0 0 16.0 0.69 SSW26 PC F-H MUGGY TRW (2) 16 89 0 71 -1 80.0 -1 15.0 SSW19 PC F-H MUGGY 17 93 +4 73 +1 83.0 +2 18.0 W 20 SU F-H HOT MUGGY 18 93 +4 71 -1 82.0 +1 17.0 2.53 WSW32 PC F-H TRW+(3) 19 88 -2 70 -1 79.0 -2 14.0 0.90 SW 24 PC F TRW+(AM) H- 20 82 -9 67 -4 74.5 -6 9.5 N 22 SU FROPA DRIER 21 85 -6 62 -11 73.5 -8 8.5 WNW16 SU PLEASANT 22 90 +1 67 -6 78.5 -2 13.5 T S 20 PC GF-(AM) H RW-DST LTG 23 84 -3 73 +1 78.5 -1 13.5 NNW18 PC F- H HUMID 24 86 -3 72 +1 79.0 -1 14.0 T ESE15 PC F H RW- 25 93 +4 69 -3 81.0 +1 16.0 0.61 SE 28 PC F H HUMID HOT TRW 26 86 -3 71 0 78.5 -1 13.5 0.01 WNW18 PC FROPA RW-(AM) 27 88 -1 65 -7 76.5 -4 11.5 ESE16 PC 28 88 0 68 -3 78.5 -2 13.0 ESE21 PC H WARM HUMID 29 81 -7 71 +1 76.0 -3 11.0 1.00 ESE16 PC F TRW+ RW 30 88 +1 70 0 79.0 0 14.0 T SSW21 C F RW- 31 92 +3 68 -3 80.0 0 15.0 1.02 WSW47 PC H HUMID TRW(1)TRW+(2) ----------------------------------------------------------------------------- SUMMARY OF JULY 1996: TEMPERATURE: Monthly mean: High = 87.3 Low = 68.8 Mean = 78.0 Departure < Normal: High = -1.7 Low = -2.5 Mean = -2.2 Degree Days: Heating = 0.0 Cooling = 404.5 Number of Days Using: Heating = 0 Cooling = 31 Days with maximum temperature >= 90: 10 Days with maximum temperature <= 32: 0 Days with minimum temperature <= 32: 0 Days with minimum temperature <= 0: 0 PRECIPITATION: Total month = 11.80" Departure < Normal = + 6.74" Normal month (to date) 5.06" or 233% Average daily = 0.38" Normal daily = 0.16" Number of days with measurable precipitation = 13 Year-to-date = 36.90" Departure = +8.54" or 130% of normal Maximum for July = 11.80" in 1996 --> (Since Minimum for July = 1.32" in 1978 --> 1976) Number of days with 0.01" or more: 13 Snowfall Number of days with 0.10" or more: 12 July total = 0.00" Number of days with 0.50" or more: 10 July maximum = 0.00" Number of days with 1.00" or more: 4 DAILY EXTREMES: Low temperature = 58 on the 5th High temperature = 94 on the 8th Maximum daily precipitation = 2.78" on the 12th Maximum 24-hour rainfall = 3.43" on the 18th-19th Maximum wind gust = E 54 mph on the 13th Maximum barometric pressure = 30.295" on the 11th Minimum barometric pressure = 29.373" on the 13th NUMBER OF: Days Cloudy: 2 Days with thunderstorms: 12 Days Partly Cloudy: 27 # of Thunderstorms: 18 Days Clear/Sunny: 2 Days with some type of snowfall: 0 Days with Fog/Ground Fog: 17 Days with Dense Fog: 0 ---------------------------------------------------------------------------- YEAR-TO-DATE: Temperatures Degree Days Precipitation Mean maximum: 67.7 (-0.9) Heating: 2389.5 Aqueous: 36.90" (DEP +8.54") Mean minimum: 48.6 (-0.8) Cooling: 929.5 Maximum monthly: 11.80"/JUL. Mean monthly: 58.1 (-0.9) 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: 25 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: 86 or 40% Days using Heating: 126 Days using Cooling: 87 Days with thunderstorms: 28 Days Cloudy: 40 Number of thunderstorms: 38 Days Partly Cloudy: 139 Days Clear/Sunny: 34 Greatest 24-hour period Days with fog/ground fog: 72 rainfall: 3.43"/July 18-19th Wind (Highest Recorded Wind Gust): SSW 64 miles per hour, JAN. 19 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. -----------------------------------------------------------------------------