BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, SEPTEMBER 17, 2004 ALL TIMES ARE IN EASTERN DAYLIGHT TIME TODAY'S DISCUSSION...11 a.m. Fog early this morning has thinned to haze with visibility no more than 6 miles. Mid and upper level cloud deck has overspread the region after a little bit of sunshine this morning leaving us with cloudy skies late this morning into early afternoon. Temperatures have risen into the low to mid 70s already. Now we await the potential heavy rainfall for late today, tonight, into tomorrow morning. TODAY'S OBSERVATIONS: 8 a.m. BHO SA 1155 -X E3 BKN 250 BKN 2F 148/66/65/2411/997/ F1/ 8/601 51003 70003 10066 20065 11 a.m. BHO SA 1455 E150 OVC 6H 148/73/66/2110/997/ FEW BINOVC SUN OCCLY DIMLY VSBL/ 8/07/ 54000 ALL TIMES EASTERN DAYLIGHT TIME.. WEATHER SUMMARY FOR THURSDAY, SEPTEMBER 16: TEMPERATURE (DEGREES F) MAX.....70 NORMAL.....71 HAZEN SHELTER 70.2 @ 2:22 P.M. MIN.....60 NORMAL.....53 HAZEN SHELTER 59.8 @ 2:17 A.M. MEAN....65 NORMAL.....62 DEPARTURE FROM 30-YEAR NORMAL.....+3 TOTAL DEPARTURE FOR THE MONTH.....+15 (+0.7 DEGREES/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........20 SSW AT 10:58 P.M. AEROVANE.........23 SSW AT 10:58 P.M. ASOS.............18 SSW AT 10:59 P.M. DAVIS............18 SSW AT 10:58 P.M. FASTEST MILE FOR YESTERDAY..........13 SSW AT 10:58 P.M. HIGHEST ASOS 2 MIN AV...16 SSW AT 10:59 P.M. HIGHEST DAVIS 1 MIN AV...16 SSW AT 10:59 P.M. AVERAGE WIND SPEED AND DIRECTION.. 5.3 ENE ASOS........... 5.8 S / 190 deg. DAVIS.......... 5.3 S / 170 deg. PRECIPITATION (INCHES) TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.03 DEPARTURE....-0.11 ASOS..............0.02 TOTAL PRECIPITATION FOR THE MONTH..........1.64 DEPARTURE....-0.53 ASOS..............1.62 TOTAL PRECIPITATION FOR THE YEAR..........35.20 DEPARTURE....-0.45 ASOS.............33.50 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/.../.. 20 MPH SSW 9/17 Overnight low 63 degrees, morning low 65 degrees Sunshine for the month so far stands at 69% of possible or more than 10 points above normal... OUR DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR SEPTEMBER 17 HIGH 86F IN 1915,1941,1991 LOW 38F IN 1959 PRECIP 2.73 INCHES IN 1933 PEAK GUST 60 MPH WNW IN 1999 RECORDS FOR SEPTEMBER 18 HIGH 88F IN 1906 LOW 36F IN 1919 PRECIP 4.25 INCHES IN 1996 PEAK GUST 77e MPH WNW IN 1948 Today's report: Matt Douglas