BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, APRIL 9, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] SUNNY WITH NEAR NORMAL TEMPERATURE TODAY... APRIL CONTINUES WARMER THAN NORMAL... The sky has been nearly completely free of clouds this morning, with just a few cirrostratus off to the southeast. The high and low so far of 54 and 40 are only slightly above the normals of 53 and 35. The April temperature departure of +54 means the month is averaging more than 6 degrees above normal per day. Visibility has been high today at about 75 miles. Today's observations: 7 A.M. Weather: Clear with a few cirrostratus Temperature: 44F, Dew point: 26F, Wind: N 8 mph Sea-level pressure: 30.18 inches, rising Visibility: 75 mile BHO SA 1155 CLR 75 219/44/26/3607/018/ CS E-SSW WND LGT/ 8/008 51024 10044 20040 10 A.M. Weather: Clear with a few cirrostratus Temperature: 50F, Dew Point: 25F, Wind: NEE 8 mph Visibility: 75 miles Sea-level pressure: 30.23 inches, rising BHO SA 1455 CLR 75 236/50/25/0707/023/ CS E-SSW WND LGT AND VRB/ 8/008 51017 WEATHER SUMMARY FOR FRIDAY, APRIL 8 TEMPERATURE (DEGREES F) MAX.....56 NORMAL.....53 ASOS.....56 AT 2:09 P.M. MIN.....43 NORMAL.....35 ASOS.....43 AT 11:56 P.M. MEAN....50 NORMAL.....44 DEPARTURE FROM 30-YEAR NORMAL......+6 TOTAL DEPARTURE FOR THE MONTH.....+54 (+6.6 DEGREES/DAY) HEATING DEGREE DAY INFORMATION TOTAL HEATING DEGREE DAYS FOR FRIDAY.........15 DEPARTURE.....-6 TOTAL HEATING DEGREE DAYS FOR THE MONTH.....126 DEPARTURE....-54 TOTAL HEATING DEGREE DAYS FOR THE SEASON...5589 DEPARTURE....-55 TOTAL HEATING DEGREE DAYS FOR LAST YEAR....5697 DIFFERENCE..-108 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........32 NW AT 6:19 A.M. AEROVANE.........33 NW AT 6:19 A.M. ASOS.............28 NW AT 6:20 A.M. DAVIS............32 NW AT 6:20 A.M. FASTEST MILE FOR YESTERDAY..........22 NW AT 6:20 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......22 WNW AT 6:22 A.M. AVERAGE WIND SPEED AND DIRECTION...10.5 NW ASOS............10.4 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE....-0.15 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.01 DEPARTURE....+0.96 ASOS..............2.02 TOTAL PRECIPITATION FOR THE YEAR..........18.47 DEPARTURE....+3.94 ASOS.............17.50* *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.....-0.1 TOTAL SNOWFALL FOR THE MONTH................0.0 DEPARTURE.....-0.9 TOTAL SNOWFALL FOR THE SEASON.............119.2* DEPARTURE....+61.1 * THIRD GREATEST SEASONAL SNOW TOTAL ON RECORD. PRELIMINARY CLIMATE SUMMARY FOR APRIL 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 4/1 56/36/46/+5/0.01/0/283/37 23 MPH SE 4/2 56/35/46/+4/.../0/000/00 53 MPH SE 4/3 53/39/46/+4/.../0/.../.. 54 MPH SE Aero 55 MPH SE 4/4 52/37/45/+3/0.01/0/131/17 32 MPH W 4/5 63/35/49/+6/0/0/721/93 32 MPH WNW Aero 35 MPH WNW * 4/6 66/43/55/+12/0/0/591/76 25 MPH S 4/7 70/44/57/+14/0.07/0/.../.. 46 MPH SSW Aero 47 MPH SSW 4/8 56/43/50/+6/0.25/0/.../.. 32 MPH NW 4/9 ...overnight low 40 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR APRIL 9 HIGH 83 IN 1991 LOW 18 IN 1888 PRECIP 2.38 IN. IN 1935 SNOWFALL 11.0 IN. IN 1917 PEAK GUST 72 MPH WNW IN 1962 RECORDS FOR APRIL 10 HIGH 83 IN 1922 LOW 20 IN 1985 PRECIP 2.40 IN. IN 1935 SNOWFALL 10.1 IN. IN 1996 PEAK GUST 66 MPH WNW IN 1967 TODAY'S REPORT BY: Mike Iacono