MONTHLY SUMMARY OF CLIMATOLOGICAL DATA - PORTSMOUTH, VIRGINIA Portsmouth Weather Records Service Portsmouth, Virginia 23702-2017 (3 miles south/West Cradock Section) 11:00 PM EDT, Friday, September 30, 1994 ---------------------------------------------------------------------------- Monthly summary of Local Climatological Data for Portsmouth, Virginia, West Cradock Section, during the month of September, 1994. Time is EDT. ---------------------------------------------------------------------------- D HT DN LT DN MT DN HDD CDD PREC HB LB WD WS SC WXR TYPE/REMARKS ---------------------------------------------------------------------------- 1 85 1 75 7 80.0 4 15.0 T 014 997 N 16 PC F H FROPA 2 76 -9 65 -3 70.5 -6 5.5 .23 026 013 NE 17 PC F R- BREEZY 3 73 -13 65 -5 69.0 -9 4.0 .18 025 021 NE 22 PC F R- BREEZY 4 72 -12 63 -6 67.5 -9 2.5 .07 023 016 NNE 23 PC RW 5 75 -9 53 -15 64.0 -12 1.0 022 010 N 17 PC CHILLY 6 78 -6 59 -8 68.5 -7 3.5 .06 010 997 WNW 13 PC RW L F 7 82 -3 64 -2 73.0 -2 8.0 T 012 001 WNW 16 PC DSNTLTG(AM)F RW- 8 79 -3 64 -2 71.5 -2 6.5 020 011 N 15 PC PLEASANT 9 84 0 61 -4 72.5 -2 7.5 016 006 W 15 PC F+(AM) K-(PM) 10 84 0 63 -4 73.5 -2 8.5 .02 021 010 N 16 PC FROPA RW DSNTLTG 11 77 -7 61 -4 69.0 -5 4.0 .02 023 014 N 16 PC RW (AM) 12 77 -7 57 -7 67.0 -7 2.0 031 022 N 16 SU GF-(AM) 13 85 2 56 -8 70.5 -3 5.5 025 014 SW 17 SU GF-(AM) 14 87 5 62 -3 74.5 1 9.5 017 006 W 14 SU GF (AM) 15 87 5 66 1 76.5 3 11.5 011 005 ENE 9 PC F-H FROPA 16 91 9 69 4 80.0 7 15.0 015 007 SSW 12 PC F H 17 89 7 69 5 79.0 6 14.0 .01 009 979 SW 22 PC H RW- 18 78 -4 70 5 74.0 0 9.0 T 999 979 N 21 PC RW- FROPA 19 76 -6 59 -4 67.5 -5 2.5 019 998 NNE 21 SU PLEASANT COOL 20 78 -2 54 -9 66.0 -6 1.0 025 018 N 15-PC GF-(AM) 21 73 -7 56 -7 64.5 -7 0.5 .02 020 005 NE 15 C R-F-(PM) 22 75 -4 63 -1 69.0 -2 4.0 .93 005 962 NE 36 C R L- F WINDY 23 79 1 59 0 69.0 1 4.0 002 985 W 19 SU PLEASANT 24 83 7 61 1 72.0 4 7.0 010 001 SW 13 PC F-(AM) 25 82 4 68 7 75.0 5 10.0 T 006 990 S 12 PC RW- 26 86 6 70 7 78.0 7 13.0 T 990 978 SSW 15 PC WARM RW- DSNTLTG 27 82 5 69 8 75.5 6 10.5 989 982 SW 21 PC F-(AM) 28 80 4 62 4 71.0 4 6.0 990 979 WSW 20 PC F-(AM) 29 75 0 57 0 66.0 0 1.0 001 983 N 22 SU GF-(AM) FROPA 30 75 1 51 -8 63.0 -3 2.0 011 001 N 16 SU PLEASANT ---------------------------------------------------------------------------- SUMMARY OF SEPTEMBER 1994: TEMPERATURE: Monthly mean: High = 80.1 Low = 62.4 Mean = 71.2 Departure < Normal: High = -1.1 Low = -1.6 Mean = -1.4 Degree Days: Heating = 3.5 Cooling = 190.5 Number of Days Using: Heating = 3 Cooling = 27 PRECIPITATION: Total month = 1.54" Normal month = 4.02" Departure < Normal = -2.48" or 38% Normal Average daily = 0.05" Normal daily = 0.13" Number of days with measurable precipitation = 9 Maximum for September = 10.29" in 1979 --> (Since Minimum for September = 0.26" in 1978 --> 1976) Number of days with 0.01" or more: 9 Snowfall Number of days with 0.10" or more: 3 September total = 0.00" Number of days with 0.50" or more: 1 September maximum = 0.00" Number of days with 1.00" or more: 0 DAILY EXTREMES: Low temperature = 51 on the 30th High temperature = 91 on the 16th Maximum daily precipitation = 0.93" on the 22nd Maximum 24-hour rainfall = 0.95" on the 21st-22nd Maximum wind gust = 36 mph from the NE on the 22nd High barometer = 30.31" on the 12th Low barometer = 29.62" on the 22nd Number of Days with thundershowers/ Days Cloudy: 2 storms: 0 Days Partly Cloudy: 21 Number of thundershowers/ Days Clear/Sunny: 7 storms: 0 Days with Fog/Ground fog: 18 Days with some type of snowfall: 0 --------------------------------------------------------------------------- YEARLY-TOTALS-TO-DATE Temperatures Degree Days Precipitation Mean maximum: 73.3 (+1.2) Heating: 2134.5 Aqueous: 38.22" (+0.80") Mean minimum: 53.4 (+0.1) Cooling: 1684.5 Maximum monthly: 10.96"/MAR. Mean monthly: 63.4 (+0.7) Minimum monthly: 1.23"/APR. Highest: 99, July 15th Snowfall: 8.00" Lowest: 5, January 19th Maximum daily: 2.00"/JAN.14 Days with maximum temperature >= 90: 48 Maximum monthly: 6.90"/JAN. Days with minimum temperature <= 32: 38 Days with some type of Days with temperature <= 0: 00 snowfall: 15 Days with measurable precipitation: 97 or 36% Number of Days with thundershowers/ Days Cloudy: 30 storms: 31 Days Partly Cloudy: 192 Number of thundershowers/ Days Clear/Sunny: 51 storms: 35 Days with fog/ground fog: 85 Greatest 24-hour period rainfall: 3.69"/March 1-2 Wind (Highest Recorded Wind Gust): Southwest 50 miles per hour, January 4th West 50 miles per hour, March 18th Barometer: Highest 30.80" on January 10th; Lowest: 29.12" on March 2nd ---------------------------------------------------------------------------- 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; YR, year; NORM, normal; DSNT LTG, distant lightning; COLDFROPA, cold 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 mea- surements are in inches. All wind speeds are in miles per hour. -----------------------------------------------------------------------------