MONTHLY SUMMARY OF CLIMATOLOGICAL DATA - PORTSMOUTH, VIRGINIA Portsmouth Weather Records Service Portsmouth, Virginia 23702-2017 (3 miles south/West Cradock Section) 12:40 PM EDT, Sunday, May 1, 1994 Monthly summary of Local Climatological Data for Portsmouth, Virginia West Cradock Section, during the month of April, 1994. Time is EST/EDT. ---------------------------------------------------------------------------- D HT DN LT DN MT DN HDD CDD PREC HB LB WD WS SC WXR TYPE/REMARKS ---------------------------------------------------------------------------- 1 61 -7 45 1 53.0 -3 12.0 016 997 N 22 PC COOL 2 70 1 40 -4 55.0 -1 10.0 027 016 SW 21 SU 3 75 9 51 4 63.0 7 2.0 018 988 SW 28 PC BREEZY MILD 4 63 -5 47 0 55.0 -3 10.0 006 986 N 24 -PC FROP BREEZY CHILLY 5 75 7 40 -8 57.5 0 7.5 006 991 SSW 15 -PC MILDER 6 84 19 59 13 71.5 16 6.5 T 992 970 SW 37 PC WINDY MILD 7 68 3 50 7 59.0 5 6.0 .19 028 972 N 23 PC FROPA TRW RW 8 55 -10 42 -4 48.5 -7 16.5 049 028 N 20 SU COOL 9 72 7 36 -10 54.0 -1 11.0 046 023 SW 23 -PC MILDER 10 80 12 57 11 68.5 12 3.5 026 005 SW 32 PC BREEZY WARM 11 69 -1 51 6 60.0 3 5.0 T 043 012 NE 22 C FROPA(2AM)RW-(PM) 12 76 5 51 6 63.5 5 1.5 042 017 SW 18 PC H MILDER FROPA 13 72 5 64 15 68.0 10 3.0 .95 013 967 SW 30 PC H- RW MILD 14 81 13 61 12 71.0 12 6.0 005 974 SW 18 SU WARM 15 83 14 55 5 69.0 9 4.0 T 010 996 SSW 18 PC BREEZY WARM 16 76 8 58 9 67.0 8 2.0 .01 000 980 SW 35 PC RW- FROPA 17 77 7 45 -3 61.0 2 4.0 010 992 WSW 25 PC BREEZY MILD 18 74 5 45 -2 59.5 1 5.5 023 002 S 17 SU MILD BREEZY 19 86 16 56 8 71.0 12 6.0 014 994 SW 25 SU BREEZY WARM 20 76 6 58 10 67.0 8 2.0 008 992 SW 23 SU COOLER FROPA 21 70 -1 55 4 62.5 2 2.5 008 000 NE 19 PC COOLER 22 58 -11 47 -1 52.5 -6 12.5 .08 011 999 N 24 PC RW- COOL 23 63 -8 40 -9 51.5 -9 13.5 022 007 NE 18 SU COOL 24 82 6 43 -7 62.5 -1 2.5 010 988 SW 21 SU PLEASANT 25 88 14 56 5 72.0 10 7.0 994 987 SW 18 SU WARM 26 90 18 58 7 74.0 13 9.0 999 991 SW 16 SU WARM 27 87 12 65 12 76.0 12 11.0 006 999 SW 22 SU H- BREEZY WARM 28 82 10 60 7 71.0 8 6.0 022 005 NE 18 PC FROPA (0845) 29 85 12 59 8 72.0 10 7.0 026 015 SW 18 PC F 30 86 13 65 12 75.5 13 10.5 019 996 SW 20 PC WARM BREEZY AFT ---------------------------------------------------------------------------- SUMMARY OF APRIL 1994: TEMPERATURE: Monthly mean: High = 75.5 Low = 52.0 Mean = 63.7 Departure < Normal: High = +6.0 Low = +3.9 Mean = +4.9 Degree Days: Heating = 121.5 Cooling = 83.5 Number of Days Using: Heating = 16 Cooling = 14 PRECIPITATION: Total month = 1.23" Normal month = 3.42" Departure < Normal = -2.19" or 36% Normal Average daily = 0.04" Normal daily = 0.11" Number of days with measurable precipitation = 4 Maximum for March = 7.08" in 1991 Minimum for March = 1.21" in 1985 Number of days with 0.01" or more: 4 Snowfall Number of days with 0.10" or more: 2 April total = 0.00" Number of days with 0.50" or more: 1 April maximum = 1.10" in Number of days with 1.00" or more: 0 1983 DAILY EXTREMES: Low temperature = 36 on the 9th High temperature = 90 on the 26th Maximum daily precipitation = 0.95" on the 13th Maximum 24-hour rainfall = 0.95" on the 13th Maximum wind gust = 37 mph from the Southwest on the 6th High barometer = 30.49" on the 8th Low barometer = 29.67" on the 13th Number of Days with thundershowers/ Days Cloudy: 1 storms: 1 Days Partly Cloudy: 18 Number of thundershowers/ Days Clear/Sunny: 11 storms: 1 Days with Fog/Ground fog: 1 Days with some type of snowfall: 0 --------------------------------------------------------------------------- YEARLY-TOTALS-TO-DATE Temperatures Degree Days Precipitation Mean maximum: 59.5 (+2.4) Heating: 2028.5 Aqueous: 21.09" (DN +5.54") Mean minimum: 38.3 (+0.6) Cooling: 92.0 Maximum monthly: 10.96"/MAR. Mean monthly: 48.9 (+1.5) Minimum monthly: 1.23"/APR. Highest: 90, April 26th Snowfall: 8.00" Lowest: 5, January 19th Maximum daily: 2.00"/JAN.14 Days with maximum temperature >= 90: 01 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: 41 or 34% Number of Days with thundershowers/ Days Cloudy: 23 storms: 07 Days Partly Cloudy: 66 Number of thundershowers/ Days Clear/Sunny: 31 storms: 06 Days with fog/ground fog: 38 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; PREC., precipitation; YR, year; NORM, normal; DST (with LTG), distant lightning; CLDFROPA or CFP, cold frontal passage; AM morning; PM afternoon hours; EVE evening hours; E estimated ----------------------------------------------------------------------------- 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 VBL Variable wind directions ----------------------------------------------------------------------------- NOTES: All temperatures are in degrees fahrenheit. All precipitation mea- surements are in inches. All wind speeds are in miles per hour. -----------------------------------------------------------------------------