BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, MAY 15, 2004 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] SUNNY, HAZY AND HOT WITH BUILDING CLOUDS THIS AFTERNOON... A southwesterly wind is pushing warm and humid weather into New England today ahead of an approaching cold front. The high temperature through 2 PM EDT of 87 degrees is well above the normal of 67. The record for the date of 93 was set in 1900. However, the low temperature since midnight of 58 matches the record high minimum for the date set previously in 1896 and 1961. The month continues to average about 5 degrees warmer than normal per day. The peak gust so far today as ben 34 mph SW AT 12:47 PM EDT. Today's observations: 8 A.M. EDT Weather: Mostly sunny and hazy with a few cirrus Temperature: 65F, Dewpoint: 61F, Wind: SSW 13 mph, Sea-level pressure: 30.11 inches, rising BHO SA 1155 250 SCT 8 198/65/61/2012/011/ HAZE ALQDS H ALF/ 8/001 53007 10065 20058 11 A.M. EDT Weather: Sunny with haze Temperature: 80F, Dew Point: 64F, Wind: SSW 12 mph BHO SA 1455 CLR 10 191/80/64/2111/009/ LONE CUFRA VCNTY STN HAZE ALQDS H ALF WND 18V24/ 8/100 56007 2 P.M. EDT Weather: Mostly sunny with moderate cumulus Temperature: 86F, Dew Point: 63F, Wind: SW16G26 mph Sea-level pressure: 30.03 inches, falling Visibility: 12 miles, hazy BHO SA 1755 50 SCT 12 171/86/63/2414G23/003/ MDT CU ALQDS HAZY PK WND 2428/43 WND 21V27/ 8/200 58020 10087 20065 WEATHER SUMMARY FOR FRIDAY, MAY 14: TEMPERATURE (DEGREES F) MAX.....77 NORMAL.....67 ASOS.....77 AT 4:04 P.M. MIN.....45 NORMAL.....46 ASOS.....44 AT 1:53 A.M. MEAN....61 NORMAL.....57 DEPARTURE FROM 30-YEAR NORMAL......+4 TOTAL DEPARTURE FOR THE MONTH.....+72 (+5.0 DEGREES/DAY) HEATING DEGREE DAYS TOTAL HEATING DEGREE DAYS FOR YESTERDAY........4 DEPARTURE.....-5 TOTAL HEATING DEGREE DAYS FOR THE MONTH.......93 DEPARTURE....-63 TOTAL HEATING DEGREE DAYS FOR THE SEASON....6086 DEPARTURE....-96 TOTAL HEATING DEGREE DAYS FOR LAST SEASON...6602 DIFFERENCE..-516 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........26 S AT 7:22 P.M. AEROVANE.........29 S AT 7:22 P.M. ASOS.............24 S AT 7:21 P.M. FASTEST MILE FOR YESTERDAY..........19 S AT 6:33 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......21 S AT 7:22 P.M. AVERAGE WIND SPEED AND DIRECTION...8.6 S ASOS............9.2 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE DEPARTURE....-0.12 ASOS..............0.01 TOTAL PRECIPITATION FOR THE MONTH..........1.41 DEPARTURE....-0.32 ASOS..............1.39 TOTAL PRECIPITATION FOR THE YEAR..........18.76 DEPARTURE....-0.92 ASOS.............17.19 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL FOR THE SEASON..............58.0 DEPARTURE....+1.7 PRELIMINARY CLIMATE SUMMARY FOR MAY 2004......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 78/50/64/+12/ 0/769/91 39 MPH SSW 5/2 72/56/64/+12/0.06/127/15 45 MPH S Aerovane 49 MPH S 5/3 61/47/54/ +1/0.66/000/00 35 MPH S 5/4 58/39/49/ -4/0.32/725/85 40 MPH WNW Aerovane 46 MPH WNW 5/5 65/38/52/ -1/ T/453/53 37 MPH S 5/6 70/45/58/ +4/ 0/711/83 28 MPH SSW 5/7 84/48/66/+12/0.04/730/85 40 MPH W Aerovane 41 MPH W 5/8 63/41/52/ -2/ 0/621/72 28 MPH S 5/9 55/44/50/ -5/0.33/043/05 30 MPH SW 5/10 70/49/60/ +5/ 0/632/73 29 MPH S 5/11 86/53/70/+15/ T/573/66 27 MPH WNW 5/12 87/58/73/+17/ 0/513/59 24 MPH W 5/13 72/43/58/ +2/ T/.../.. 31 MPH NE 5/14 77/45/61/ +4/ T/.../.. 26 MPH S 5/15 overnight low 58 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MAY 15 HIGH 93F IN 1900 LOW 36F IN 1947,1985 PRECIP 1.63 INCHES IN 1978 PEAK GUST 53e MPH NE IN 1978, W 2002 RECORDS FOR MAY 16 HIGH 90F IN 1951 LOW 30F IN 1936 PRECIP 2.63 INCHES IN 1954 PEAK GUST 56e MPH NW IN 1952 TODAY'S REPORT BY: Mike Iacono