BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, MAY 02, 2005 ALL TIMES EASTERN DAYLIGHT TIME UNLESS OTHERWISE NOTED MONTH OF APRIL 2005 WARMER, WETTER AND SUNNIER THAN NORMAL... Mean temp. 49.5 [ +3.2 ] 24 hour corr. mean temp. 48.9 deg. High: 86/20th Low: 28/12th,13th HDD = 460 [ -102 ] CDD = 2 [ - 1 ] PRECIP = 4.62 ins. [ +0.30 ] SNOWFALL = 0.2 ins. [ -2.9 ] Peak wind gust: 54 MPH SE / 3rd; Aerovane 56 MPH SE / 3rd Prevailing wind: 13.1 MPH SE 11% Sunshine: 240.6 HRS or 60%, 11 points above av. Last freeze of the season a week early; 28 deg. on 4/13... Last snow of the season 0.2 ins. / 12th TODAY'S OBSERVATIONS 5/2/2005 MON 8 a.m. BHO SA 1155 CLR 25 158/47/33/2509/000/ FEW CI DSNT S HAZY/ 8/001 53012 ASOS 70011 MANUAL 70011 10047 20039 11 a.m. BHO SA 1455 CLR 50 149/57/28/2211G17/997/ FEW CU FRMG FEW CI SE-SW WND 18V27/ 8/100 58009 2 p.m. BHO SA 1755 50 SCT E70 BKN 250 BKN 45 124/58/33/1624G32/989/ FEW MDT CU FEW ACC LGT HZ INCRSNG GRDL WSHFT PK WND 1632/55/ WND 13V18/ 8/261 58024 10063 20047 WEATHER SUMMARY FOR SUNDAY MAY 01: TEMPERATURE (DEGREES F) MAX.....57 NORMAL.....62 HAZEN 53.9 @ 6:02 p.m. MIN.....44 NORMAL.....42 HAZEN 48.6 @ 1:00 a.m. MEAN....51 NORMAL.....52 DEPARTURE FROM 30-YEAR NORMAL...... - 1 TOTAL DEPARTURE FOR APRIL ........ + 103 (+3.2 DEGREES/DAY) PRECIPITATION (INCHES) THROUGH THIS MORNING TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.11 DEPARTURE....-0.02 ASOS..............0.11 TOTAL PRECIPITATION FOR MAY................0.14 ASOS..............0.14 TOTAL PRECIPITATION FOR APRIL..............4.62 DEPARTURE....+0.30 ASOS..............4.55 TOTAL PRECIPITATION FOR THE YEAR..........21.22 DEPARTURE....+3.29 TOTAL FOR ASOS FOR THE YEAR...............20.03 SNOWFALL (INCHES) THROUGH THIS MORNING TOTAL SNOWFALL 24 HRS ENDING 8 A.M........ 0.0 DEPARTURE....- 0.1 TOTAL SNOWFALL FOR APRIL ................. 0.2 DEPARTURE....- 2.9 TOTAL SNOWFALL FOR THE SEASON.............119.4 DEPARTURE.....+59.4 YESTERDAY'S PEAK GUSTS AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........33 WNW AT 12:14 P.M. AEROVANE.........37 WNW AT 12:14 P.M. ASOS.............32 WNW AT 12:14 P.M. DAVIS............34 NNW AT 12:14 P.M. FASTEST MILE FOR YESTERDAY......... 24 WNW AT 10:11 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......24 WNW AT 12:15 P.M. MAXIMUM 1-MINUTE DAVIS AVERAGE......26 W AT 10:16 P.M. OUR AVERAGE SPEED AND DIRECTION.....10.7 WSW ASOS AVERAGE AND DIRECTION..........10.5 W [260 deg] DAVIS AVERAGE AND DIRECTION.........11.0 W [260 deg] THE PRELIMINARY CLIMATE SUMMARY FOR APRIL 2005...... CALENDAR DAY DATA DATA REPORTED HERE ENDING MIDNIGHT STANDARD TIME 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/+4/1.04/0/000/00 53 MPH SE 4/3 53/39/46/+4/0.63.0/254/33 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/+14/0.07/0/164/21 46 MPH SSW 4/8 56/43/50/+6/0.25/0/212/27 32 MPH NW 4/9 58/39/49/+5/0/0/786/100 22 MPH NW 4/10 70/39/55/+11/0/0/742/94 38 MPH NNE 4/11 48/36/42/-3/0/0/744/94 32 MPH NNE 4/12 48/28/38/-7/0.03/0.2/413/52 32 MPH NE 4/13 50/28/39/-6/0/0/622/78 22 MPH WNW 4/14 50/36/43/-3/0/0/760/95 23 MPH WNW 4/15 48/34/41/-5/0/0/787/98 35 MPH NE 4/16 55/35/45/-1/0/0/790/98 22 MPH ESE 4/17 74/37/56/+9/0/0/784/97 23 MPH WNW 4/18 70/48/59/+12/0/0/795/98 27 MPH NW Aero 30 MPH WNW 4/19 78/46/62/+15/0/0/.../.. 27 MPH SSW 4/20 86/47/67/+19/0.05/0/458/56 44 MPH NNE 4/21 58/38/48/0/0.11/0/581/71 37 MPH N 4/22 61/38/50/+1/T/0/740/90 33 MPH SSE 4/23 62/41/52/+3/0.50/000/00 52 MPH S 4/24 58/41/50/+1/0.61/273/33 46 MPH SE 4/25 50/38/44/-6/0.20/257/31 39 MPH SSW 4/26 67/40/54/+4/0/0/774/93 43 MPH S 4/27 54/49/52/+2/0.60/0/000/00 35 MPH ESE 4/28 59/41/50/-1/0.07/0/134/16 42 MPH WSW 4/29 63/28/51/0/0/0/832/99 39 MPH SW 4/30 54/47/51/-1/0.44/0/008/01 35 MPH S DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): Daily PEAK GUST records are for the period 1940-2004. Temperature and precipitation records are for the full period of record 1885-2004. All estimated gusts are marked with an 'e'. RECORDS FOR MAY 02 HIGH 92F IN 2001 LOW 29F IN 1903 PRECIP 1.15 INCHES IN 1989 SNOWFALL 1.0 INS IN 1888 PEAK GUST 58 MPH S IN 1983 RECORDS FOR MAY 03 HIGH 92F IN 2001 LOW 31F IN 1888 PRECIP 2.25 INS IN 1900 SNOWFALL TRACE IN 1908, 1985 PEAK GUST 71 MPH W IN 2002 Today's report by: Robert Skilling