----------------------------------------------------------------------------- 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 November 1996. Time is EST. ----------------------------------------------------------------------------- D HT DN LT DN MT DN HDD CDD PREC WD WS SC WXR TYPE/REMARKS ----------------------------------------------------------------------------- 1 65 -1 54 +3 59.5 +1 5.5 .06 NNW17 PC RW- F FROPA 2 57 -11 39 -12 48.0 -11 17.0 .98 NNE26 PC R L F COLDER 3 47 -20 34 -13 40.5 -16 24.5 N 24 SU COLD 4 57 -10 31 -16 44.0 -13 21.0 SSE11 SU MODERATE FROST (AM) 5 69 +4 44 -4 56.5 0 8.5 .14 S 14 PC RW(EVE) F 6 74 +10 57 +12 65.5 +11 0.5 .01 S 16 PC RW (AM) F 7 76 +12 57 +14 66.5 +13 1.5 S 22 PC MILD 8 80 +16 57 +14 68.5 +15 3.5 .21 SSW37 PC RW WINDY FROPA WARM 9 57 -7 41 -2 49.0 -5 16.0 WSW26 PC BREEZY COOLER 10 50 -16 35 -11 42.5 -13 22.5 WSW20 PC BREEZY COLD 11 45 -17 31 -12 38.0 -14 27.0 WNW23 PC BREEZY COLD 12 43 -14 28 -14 35.5 -14 29.5 NNW22 SU COLD 13 45 -14 28 -12 36.5 -13 28.5 NNW16 PC FROST (AM) 14 46 -15 36 -4 41.0 -10 24.0 T NNW25 C R- FROPA(PM) 15 43 -19 35 -9 39.0 -14 26.0 N 30 SU BREEZY 16 48 -14 32 -11 40.0 -13 25.0 N 17 PC FROST (LATE PM) 17 52 -9 29 -14 40.5 -11 24.5 NNW16 -PC FROST (MOD AM) 18 60 -2 33 -9 46.5 -6 18.5 .14 WSW15 PC R- (PM) F 19 54 -8 42 0 48.0 -4 17.0 .02 NNW16 PC R- F 20 51 -11 43 -1 47.0 -6 18.0 .03 N 13 PC FROPA R-(AM) F 21 47 -14 38 -3 42.5 -8 22.5 .72 N 13 C R F FROPA 22 44 -13 35 -6 39.5 -10 25.5 .03 NNE34 C R- F 23 49 -10 36 -5 42.5 -7 22.5 NNW27 PC BREEZY AM 24 56 -4 31 -11 43.5 -7 21.5 SE 10 SU FR-(AM) 25 67 +9 37 -3 52.0 +3 13.0 S 24 PC GF(AM) 26 71 +9 40 -1 55.5 +4 9.5 .28 S 34 PC RW FROPA DST LTG 27 41 -23 34 -11 37.5 -17 27.5 NNW33 PC WINDY COLD 28 41 -25 27 -20 34.0 -22 31.0 W 14 PC COLD 29 43 -15 27 -14 35.0 -15 30.0 NNE15 PC FROST (MOD AM) 30 56 +2 30 -6 43.0 -2 22.0 .04 S 16 PC -FROST (AM) R-F ----------------------------------------------------------------------------- SUMMARY OF NOVEMBER 1996: TEMPERATURE: Monthly mean: High = 54.5 Low = 37.4 Mean = 45.9 Departure < Normal: High = - 7.7 Low = -6.0 Mean = -6.9 Degree Days: Heating = 578.0 Cooling = 5.5 Number of Days Using: Heating = 27 Cooling = 3 Days with maximum temperature >= 90: 0 Days with maximum temperature <= 32: 0 Days with minimum temperature <= 32: 10 Days with minimum temperature <= 0: 0 PRECIPITATION: Total month = 2.66" Departure < Normal = -0.74" Normal month (to date) 3.40" or 78% Average daily = 0.09" Normal daily = 0.11" Number of days with measurable precipitation = 12 Year-to-date = 52.77" Departure = + 8.40" or 119% 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: 12 Snowfall Number of days with 0.10" or more: 6 November total = 0.00" Number of days with 0.50" or more: 2 November maximum = 1.80" in Number of days with 1.00" or more: 0 1987 DAILY EXTREMES: Low temperature = 27 on the 28th, 29th High temperature = 80 on the 8th Maximum daily precipitation = 0.98" on the 2nd Maximum 24-hour rainfall = 1.04" on the 1st-2nd Maximum wind gust = SSW 37 mph on the 8th Maximum barometric pressure = 30.841" on the 16th Minimum barometric pressure = 29.653" on the 8th & 9th NUMBER OF: Days Cloudy: 3 Days with thunderstorms: 0 Days Partly Cloudy: 22 # of Thunderstorms: 0 Days Clear/Sunny: 5 Days with some type of snowfall: 0 Days with Fog/Ground Fog: 10 Days with Dense Fog: 0 Days with Frost: 7 ---------------------------------------------------------------------------- YEAR-TO-DATE: (through November 30, 1996) Temperatures Degree Days Precipitation Mean maximum: 69.4 (-1.6) Heating: 3115.0 Aqueous: 52.77" (DEP +8.40") Mean minimum: 50.9 (-1.4) Cooling: 1486.0 Maximum monthly: 11.80"/JUL. Mean monthly: 60.1 (-1.5) 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: 31 Maximum monthly: 8.00"/FEB. Days with maximum temperature <= 32: 9 Seasonal total: 16.20" Days with minimum temperature <= 32: 58 Days with some type of Days with temperature <= 0: 0 snowfall: 15 Days with measurable Number of: precipitation: 127 or 38% Days using Heating: 178 Days using Cooling: 155 Days with thunderstorms: 40 Days Cloudy: 52 Number of thunderstorms: 52 Days Partly Cloudy: 231 Days Clear/Sunny: 52 Greatest 24-hour period Days with fog/ground fog: 123 rainfall: 3.90"/OCT. 7-8th Wind (Highest Recorded Wind Gust): SSW 64 miles per hour, January 19th Barometer: Highest 30.937" on March 10th; Lowest: 29.168" on October 8th --------------------------------------------------------------------------- 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. -----------------------------------------------------------------------------