BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, MAY 25, 2006 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Thin scattered cirrus Temperature: 58F, Dew point: 46F, Wind: SE 07 mph Sea-level pressure: 29.96 inches Hg, rising Visibility: 30 miles BHO SA 1155 250 –SCT 300 –SCT 30 146/58/46/1406/996/ SML PTCH AC WNW FEW LWR DENSE CI S-W-N THN K ALG HRZN S-W-N VSBY NE-SE 25 WNW 50 ABV DSSPTNG INVSN LGT HZ/ 8/042 53006 10058 20050 10 A.M. Weather: Clear, few high clouds Temperature: 69F, Dew point: 43F, Wind: SSE at 09 mph Sea-level pressure: 29.94 inches Hg, falling Visibility: 50 miles BHO SA 1455 CLR 50 139/69/43/1608/994/ FEW AC/CI FEW DENSE CI WND 11V20/ 8/042 58007 WEATHER SUMMARY FOR WEDNESDAY, MAY 24 TEMPERATURE (DEGREES F) MAX.....64 NORMAL.....70 HAZEN.......64.3 @ 1:42 p.m. MIN.....46 NORMAL.....50 HAZEN.......46.2 @ 2:18 a.m. MEAN....55 NORMAL.....60 DEPARTURE FROM 30-YEAR NORMAL......-5 TOTAL DEPARTURE FOR THE MONTH.....-67 (-3.0 DEGREES/DAY) HEATING DEGREE DAYS HEATING DEGREE DAY UNITS FOR YESTERDAY.....10 DEPARTURE.....+4 TOTAL HEATING UNITS FOR THE MONTH.........291 DEPARTURE....+59 [corrected] TOTAL HEATING UNITS FOR THE SEASON.......5710 DEPARTURE...-548 TOTAL HEATING UNITS LAST SEASON TO DATE..6258 DIFFERENCE..-570 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........24 WNW AT 12:48 P.M. * AEROVANE..........24 WNW AT 12:48 P.M. ASOS..............22 WNW AT 12:48 P.M. DAVIS.............24 WNW AT 6:41 A.M. FASTEST MILE FOR YESTERDAY...........16 W AT 6:22 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE........17 WNW AT 6:40 A.M. DAVIS................................19 W AT 6:41 A.M. AVERAGE WIND SPEED AND DIRECTION...10.2 MPH W ASOS............10.5 MPH DAVIS...........10.7 MPH W [280 deg] * LAST OF SEVERAL OCCURRENCES PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01 DEPARTURE....-0.11 ASOS..............0.01 TOTAL PRECIPITATION FOR THE MONTH..........9.46 DEPARTURE....+6.53 ASOS..............9.45 TOTAL PRECIPITATION FOR THE YEAR..........21.36 DEPARTURE....+0.48 ASOS.............21.02 SNOWFALL FOR THE SEASON..............52.2 DEPARTURE.....-7.9 PRELIMINARY CLIMATE SUMMARY FOR MAY 2006......CALENDAR DAY DATA DATA REPORTED: DATE MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 5/1 53/42/48/-4/0.03/245/29 45 NNE 5/2 44/41/43/-9/1.36/000/00 39 N 5/3 52/43/48/-5/0.30/000/00 31 N 5/4 72/51/62/+9/0.00/554/65 22 WNW 5/5 81/55/68/+15/0.00/666/78 24 WSW 5/6  73/49/61/+7/T/248/29        31 NW 5/7  66/42/54/0/746/87           30 NW 5/8  63/45/54/0/0/629/73         22 NE  5/9  52/44/48/-7/1.50/000/00     50 N   5/10 49/44/47/-8/0.32/000/00     43 NE  5/11 54/46/50/-5/0.03/009/01 25 NE 5/12 51/46/49/-7/0.34/000/00 28 NE 5/13 52/44/48/-8/2.39/000/00 32 N 5/14 48/44/46/-11/1.93/000/00 38 NE 5/15 51/46/49/-8/0.27/000/00 29 NNE 5/16 53/47/50/-7/0.41/000/00 36 N 5/17 69/48/59/+2/0/.../.. 32 S 5/18 75/50/63/+5/0/.../.. 37 S 5/19 62/49/56/-2/0.37/.../.. 39 SSW TSTM 5/20 66/47/57/-1/0/.../.. 42 SSW 5/21 68/40/54/-5/0.20/.../.. 74 WSW TSTM 5/22 65/39/52/-7/0/.../.. 37 W 5/23 62/40/51/-8/0/.../.. 32 W 5/24 64/46/55/-5/0/.../.. 24 WNW 5/25 morning low temp. 50 deg; normal now 50 deg. Today's Report by: Robert Skilling