BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, MARCH 26, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] SUNNY AND COOL WEATHER TODAY... The sky has been nearly totally clear today with only a few distant clouds. The temperature is running well below normal again with a high and low of 38 and 26 so far today through early afternoon. Visibility is good at about fifty miles, and the wind has remained light all day. Snow depth on the summit stands at 4 inches on average, varying from zero to as much as 11 inches in areas near the summit. Today's observations: 7 A.M. Weather: Clear with a few cirrus Temperature: 30F, Dew point: 12F, Wind: N 9 mph Sea-level pressure: 30.19 inches, rising Visibility: 50 miles BHO SA 1155 CLR 50 225/30/12/3608/019/ CI DSNT SSE-W WND LGT/ 8/001 4/004 51020 10031 20026 10 A.M. Weather: Clear with a few small cumulus Temperature: 36F, Dew Point: 18F, Wind: NE 10 mph Visibility: 50 miles Sea-level pressure: 30.25 inches, rising BHO SA 1455 CLR 50 245/36/18/0509/025/ FEW SML CU DSNT ESE-SSE WND LGT AND VRB/ 8/100 53020 1 P.M. Weather: Clear with a few cirrus Temperature: 39F, Dew Point: 18F, Wind: ENE 10 mph Visibility: 45 miles Sea-level pressure: 30.23 inches, falling BHO SA 1755 CLR 45 238/39/18/0709/023/ FEW CI DSNT SW LONE SML CU DSNT S WND LGT AND VRB/ 8/101 58007 10039 20030 WEATHER SUMMARY FOR FRIDAY, MARCH 25: TEMPERATURE (DEGREES F) MAX.....47 NORMAL.....48 ASOS.....46 AT 2:43 P.M. MIN.....30 NORMAL.....30 ASOS.....30 AT 5:22 P.M. MEAN....39 NORMAL.....39 DEPARTURE FROM 30-YEAR NORMAL.......0 TOTAL DEPARTURE FOR THE MONTH....-110 (-4.6 DEGREES/DAY) HEATING DEGREE DAY INFORMATION TOTAL HEATING DEGREE DAYS FOR FRIDAY.........26 DEPARTURE......0 TOTAL HEATING DEGREE DAYS FOR THE MONTH.....852 DEPARTURE...+107 TOTAL HEATING DEGREE DAYS FOR THE SEASON...5311 DEPARTURE.....-4 TOTAL HEATING DEGREE DAYS FOR LAST YEAR....5355 DIFFERENCE...-44 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........30 W AT 10:33 A.M. AEROVANE.........30 W AT 10:33 A.M. ASOS.............26 W AT 2:46 P.M. DAVIS............29 W AT 2:48 P.M. FASTEST MILE FOR YESTERDAY..........23 W AT 2:48 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......21 W AT 2:50 P.M. AVERAGE WIND SPEED AND DIRECTION..13.1 SW ASOS...........12.5 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE....-0.16 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.61 DEPARTURE....-0.26 ASOS..............3.35 TOTAL PRECIPITATION FOR THE YEAR..........13.95 DEPARTURE....+1.24 ASOS.............13.01* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.....-0.3 TOTAL SNOWFALL FOR THE MONTH...............25.0 DEPARTURE....+14.5 TOTAL SNOWFALL FOR THE SEASON.............119.2* DEPARTURE....+63.3 * THIRD GREATEST SEASONAL SNOW TOTAL ON RECORD. PRELIMINARY CLIMATE SUMMARY FOR MARCH 2005......CALENDAR DAY 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 3/1 29/23/26/-6/0.53/3.6/000/00 52 MPH NNE Aero 52 MPH NNE 3/2 33/20/27/-5/T/T/264/39 42 MPH W Aero 45 MPH W 3/3 28/15/22/-10/0/0/640/94 43 MPH W Aero 43 MPH W 3/4 31/12/22/-11/0/0/561/82 40 MPH W Aero 44 MPH W 3/5 39/18/29/-4/0/0/679/99 29 MPH W 3/6 40/24/32/-1/0/0/345/50 42 MPH SSW Aero 44 MPH SSW 3/7 47/33/40/+7/0/0/201/29 45 MPH S Aero 50 MPH SSE 3/8 42/12/27/-7/1.20/5.7/000/00 63 MPH WNW Aero 66 MPH WNW 3/9 21/06/14/-20/0.02/0.3/663/95 54 MPH W Aero 58 MPH W 3/10 29/11/20/-14/0/0/673/96 29 MPH WSW 3/11 32/18/26/-10/0.07/1.0/134/19 29 MPH E 3/12 34/28/31/-4/1.19/8.9/000/00 27 MPH NE 3/13 37/25/31/-4/0.01/0.1/291/41 25 MPH W 3/14 39/21/30/-6/0/0/669/94 31 MPH WNW 3/15 44/24/34/-2/0/0/512/72 30 MPH WNW 3/16 43/26/35/-1/0/0/675/94 29 MPH W 3/17 43/23/33/-4/0/0/606/84 25 MPH WNW 3/18 43/29/36/-1/0/0/506/70 27 MPH WNW 3/19 45/25/35/-2/0/0/697/96 28 MPH WNW Aero 31 MPH WNW 3/20 48/28/38/0/T/0/365/50 27 MPH SSW 3/21 41/33/37/-1/0/0/007/01 21 MPH NNE 3/22 52/29/41/+3/0/0/720/98 29 MPH W 3/23 42/30/36/-2/0.12/1.0/022/03 36 MPH ENE 3/24 37/31/34/-5/0.47/4.4/022/03 40 MPH N Aero 41 MPH NNE 3/25 47/30/39/0/0/0/.../.. 30 MPH W 3/26 ..overnight low 26 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 26 HIGH 76 IN 1922,1949 LOW 6 IN 1960 PRECIP 1.99 INCHES IN 1988 SNOWFALL 5.4 INCHES IN 2001 PEAK GUST 63 MPH S IN 1970 RECORDS FOR MARCH 27 HIGH 78 IN 1998 LOW 12 IN 1975 PRECIP 1.05 INCHES IN 1913 SNOWFALL 6.6 INCHES IN 1959 PEAK GUST 62 MPH NW IN 1965, SE IN 1992 TODAY'S REPORT BY: Mike Iacono