BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, FEBRUARY 21, 2004 ALL TIMES ARE IN EASTERN STANDARD TIME TODAY'S OBSERVATIONS.... 7 A.M. BHO SA 1155 W2 X1 3/4F 014/34/33/0110/957/ VSBY 1/2V1 WND LGT/ 8//// 55019 10034 20029 10 A.M. BHO SA 1455 W3 X1 1/16F 999/36/36/1702/953/ WND L/V/ 8//// 55015 1 P.M BHO SA 1755 W2 X1 3/4F 983/38/38/3006/948/ WND LGT/ 8//// 58016 10038 20034 OUR WEATHER SUMMARY FOR FRIDAY, FEBRUARY 20 TEMPERATURE (DEGREES F) MAX.....43 NORMAL.....37 MIN.... 23 NORMAL.....21 MEAN....33 NORMAL.....29 DEPARTURE FROM 30-YEAR NORMAL.....+4 TOTAL DEPARTURE FEBRUARY TO DATE: +9 DEPARTURE FOR FEBRUARY TO DATE: +0.5 DEGREES/DAY ASOS MAX/MIN FOR 2/19 42/23 AT 1:37 P.M. & 7:08 A.M. HEATING DEGREE DAYS TOTAL HEATING DEGREE DAYS FOR YESTERDAY.......32 DEPARTURE.....-4 TOTAL HEATING DEGREE DAYS FOR FEBRUARY...... 742 DEPARTURE.... -7 TOTAL HEATING DEGREE DAYS FOR THE SEASON....4345 DEPARTURE.....+54 TOTAL HEATING DEGREE DAYS FOR LAST SEASON...4564 DIFFERENCE...-251 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........18 WNW AT 4:18 A.M. AEROVANE.........22 WNW AT 4:19 A.M. ASOS.............17 W AT 4:19 A.M. FASTEST MILE FOR YESTERDAY..........15 WNW AT 4:18 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......15 WNW AT 4:20 A.M. AVERAGE WIND SPEED/DIRECTION........8.3 MPH WNW AVERAGE ASOS WIND FOR YESTERDAY ....8.9 MPH PRECIPITATION (INCHES) TOTAL PRECIPITATION 24 HR ENDING 7 A.M.....0.00 ASOS..............0.00 TOTAL PRECIPITATION FOR FEBRUARY...........1.74 TOTAL DEPARTURE FOR FEBRUARY TO DATE......-1.13 TOTAL ASOS PRECIPITATION FOR FEBRUARY......1.58 TOTAL PRECIPITATION FOR 2004...............3.46 DEPARTURE....-4.19 TOTAL ASOS PRECIPITATION FOR 2004..........2.98 SNOWFALL (INCHES) TOTAL SNOWFALL FOR 24 HRS ENDING 7 A.M......0.0 TOTAL SNOWFALL FOR FEBRUARY TO DATE.........3.0 DEPARTURE......-6.5 TOTAL SNOWFALL FOR THE SEASON..............41.7 DEPARTURE......+3.5 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY, 2004......CALENDAR DAY DATA FEBRUARY 2004 DAILY DATA... DATA REPORTED: DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 2/1 31/9/20/-6/0/0/599/100 33 NW Aerovane 38 MPH NW 2/2 37/18/28/+2/0/0/578/96 21 NNW 2/3 42/25/34/+8/0.51/0.2/000/00 47 SSE Aerovane 49 MPH SSE 2/4 42/24/33/+7/T/0/564/93 46 W Aerovane 47 MPH W 2/5 34/21/28/+1/0/0/451/74 33 WNW 2/6 33/24/29/+2/1.08/2.3/000/00 28 SSE 2/7 39/24/32/+5/0.12/T/092/15 37 WNW 2/8 24/12/18/-9/0/0/616/100 59 WNW Aerovane 62 MPH WNW 2/9 41/20/31/+4/0/0/279/45 47 SSW Aerovane 48 MPH SSW 2/10 44/32/38/+11/0/0/546/88 31 WSW 2/11 35/21/28/+1/0/0/618/99 46 W Aerovane 46 MPH W 2/12 35/16/26/-2/0/0/294/47 25 SW 2/13 38/26/32/+4/0/0/535/85 37 W 2/14 40/28/34/+6/0/0/581/92 32 W 2/15 29/9/19/-9/T/T/583/92 39 NW 2/16 27/8/18/-10/0/0/631/99 20 NNW 2/17 29/11/20/-9/0/0/346/54 21 SE 2/18 29/24/27/-2/0.03/0.5/006/01 35 N Aerovane 37 MPH N 2/19 39/20/30/+1/0/0/.../.. 38 NW Aerovane 44 MPH NW 2/20 43/23/33/+4/0/0/.../.. 18 WNW 2/21 MORNING LOW - 29 DEGREES NEW DAILY RECORDS FOR MONTH OF FEBRUARY 2004 TO DATE: NONE RECORDS FOR FEBRUARY 21 HIGH 62F IN 1930 LOW -6F IN 1950 PRECIP 2.42 INCHES IN 1898 SNOWFALL 9.0 INCHES IN 1929 PEAK GUST 72 MPH WNW IN 1967 RECORDS FOR FEBRUARY 22 HIGH 63F IN 1997 LOW -1F IN 1918 PRECIP 1.38 INCHES IN 1900 SNOWFALL 8.0 INCHES IN 1893 PEAK GUST 74 MPH S IN 1974 TODAY'S REPORT BY: Andrew Hoell