BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY SEPTEMBER 23, 2004 ALL TIMES ARE IN EASTERN DAYLIGHT TIME TODAY'S DISCUSSION...2 P.M. Morning sunny dry weather today with much cooler temperatures with a seabreeze this afternoon. TODAY'S OBSERVATIONS: 9/23/2004 THU 8 a.m. clear with 20 miles visibility in light fog and haze; temp. 64; dewpoint 59; wnd nnw at 12 mph; six hour min temp. 61 BHO SA 1155 CLR 20 217/64/59/3310/017/ FEW CI ENE-E THN FH ALQDS THN K ALG HRZNS WND 30V36 WND GRDLY VEERING/ 51020 10066 20061 11 a.m. broken clouds with 45 miles visibility and higher to the northeast and east and temp. 71; dewpoint 59; wind northeast 13 mph... BHO SA 1455 27 SCT E80 BKN 45 230/71/59/0411/021/ CU FRMG XCPT NE-E FEW ACSL E-SE VSBY HIER NE-E WND 36V08 WND VEERED PST HR/ 8/440 51013 2 p.m. clear, distant cumulus well inland away from seabreeze; visibility 50 miles, temp. 69; dewpoint 55; wind ene at 12 mph; six hourly max temp. 73 BHO SA 1755 CLR 50 232/69/55/0610/022/ CU/SC DSNT SSE-SW-NNW WND 02V10/ 8/400 50002 10073 20064 ALL TIMES EASTERN DAYLIGHT TIME.. WEATHER SUMMARY FOR WEDNESDAY, SEPTEMBER 22: TEMPERATURE (DEGREES F) MAX.... 78 NORMAL.....69 HAZEN SHELTER 78.3 @ 3:16 P.M. MIN.....57 NORMAL.....51 HAZEN SHELTER 57.0 @ 2:58 A.M. MEAN....68 NORMAL.....60 DEPARTURE FROM 30-YEAR NORMAL.....+ 8 TOTAL DEPARTURE FOR THE MONTH.....+ 16 (+0.5 DEGREES/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........25 NNW AT 11:02 P.M. AEROVANE.........29 NNW AT 11:02 P.M. ASOS.............24 NNW AT 11:02 P.M. DAVIS............27 NNW AT 10:59 P.M. FASTEST MILE FOR YESTERDAY..........19 NW AT 10:57 P.M. HIGHEST ASOS 2 MIN AV...18 NW AT 10:59 P.M. HIGHEST DAVIS 1 MIN AV...21 NNW AT 10:59 P.M. AVERAGE WIND SPEED AND DIRECTION.. 10.9 WNW ASOS........... 11.5 WNW / 300 deg. DAVIS.......... 11.2 WNW/ 300 deg. PRECIPITATION (INCHES) TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.00 DEPARTURE....-0.14 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........4.86 DEPARTURE....+1.85 ASOS..............4.88 TOTAL PRECIPITATION FOR THE YEAR..........38.41 DEPARTURE....+1.93 ASOS.............36.76 PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 2004......CALENDAR DAY DATA DATA REPORTED: 24 HOUR PERIODS ENDING MIDNIGHT EST DATE MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST ... SUNSHINE DATA NOT YET AVAILABLE 9/1 78/60/69/+2/0/763/97 21 MPH WNW 9/2 72/56/64/-2/0/722/92 23 MPH S 9/3 79/57/68/+2/0/743/95 25 MPH SSW 9/4 82/58/70/+4/0/553/71 29 MPH ENE Aero 30 MPH ENE 9/5 67/52/60/-5/0/513/66 25 MPH ENE 9/6 72/51/62/-3/0/720/93 18 MPH SSE LABOR DAY 9/7 80/58/69/+4/0/424/55 24 MPH SSE 9/8 74/63/69/+4/0.79/008/01 23 MPH NE 9/9 80/63/72/+8/0.75/115/15 45 MPH S Aero 51 MPH S Remnants of Frances 9/10 74/56/65/+1/T/610/80 36 MPH WNW Aero 40 MPH NW 9/11 69/55/62/-2/0/456/60 18 MPH NE 9/12 76/53/65/+2/0/719/95 18 MPH SW 9/13 76/57/67/+4/0/513/68 18 MPH NNW 9/14 64/52/58/-5/0/699/93 18 MPH SSE 9/15 69/51/60/-2/0.01/367/49 20 MPH S 9/16 70/60/65/+3/0.09/000/00 20 MPH SSW 9/17 78/65/72/+10/0/134/18 23 MPH SSW 9/18 67/53/59/-2/3.22/000/00 46 MPH NE Aero 48 MPH NE Remnants of Ivan 9/19 59/43/51/-10/0/685/93 37 MPH NNW Aero 40 MPH NNW 9/20 67/43/55/-6/0/690/94 23 MPH NNW 9/21 68/53/61/+1/0/344/47 20 MPH S 9/22 78/57/68/+8/0/678/93 25 MPH NNW Aero 29 MPH NNW 9/23 morning low temp. 61 deg... OUR DAILY EXTREMES.... Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR SEPTEMBER 23 HIGH 93F IN 1895,1914 LOW 33F IN 1904 PRECIP 2.67 INCHES IN 1994 PEAK GUST 62 MPH SSW IN 1989 RECORDS FOR SEPTEMBER 24 HIGH 87F IN 1959 LOW 33F IN 1885,1950,1963 PRECIP 1.19 INCHES IN 1955 PEAK GUST 54e MPH SW IN 1940 Today's report: Robert Skilling