BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY SEPTEMBER 25, 2004 ALL TIMES ARE IN EASTERN DAYLIGHT TIME TODAY'S DISCUSSION...2 P.M. An increase in middle and high level clouds has been the theme today. However, the clouds haven't been enough to totally block the sun, and so a rather nice day is in progress. Humidity levels have been slowly creeping up with the dew point rising from the mid 50s early this morning to the low 60s now. As a result of this increase in moisture, visibility has been decreasing under hazy conditions, dropping from a maximum of about 40 miles this moring to 25 miles now. TODAY'S OBSERVATIONS: 8 a.m. BHO SA 1155 250 -BKN 40 203/58/55/2215/013/ THN K LYR ALNG HRZN ALQDS VSBY W-NW 25/ 8/001 56003 10058 20054 11 a.m. BHO SA 1455 200 BKN 250 -BKN 30 196/70/59/2116G21/011/ FEW CC ALQDS FEW ACC DSNT WNW-NW HAZY/ 8/062 58007 2 p.m. BHO SA 1755 200 BKN 250 -BKN 25 176/74/62/2116G22/005/ FEW CC N-NE FEW AC W-N HAZY/ 8/072 58020 10075 20058 ALL TIMES EASTERN DAYLIGHT TIME.. WEATHER SUMMARY FOR FRIDAY, SEPTEMBER 24: TEMPERATURE (DEGREES F) MAX.... 72 NORMAL.....68 HAZEN SHELTER 72.2 @ 3:14 P.M. MIN.....55 NORMAL.....50 HAZEN SHELTER 55.4 @ 6:23 A.M. MEAN....64 NORMAL.....59 DEPARTURE FROM 30-YEAR NORMAL.....+ 5 TOTAL DEPARTURE FOR THE MONTH.....+ 27 (+0.9 DEGREES/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........18 SSW AT 10:14 P.M. AEROVANE.........21 SSW AT 10:14 P.M. ASOS.............17 SSW AT 11:06 P.M. DAVIS............18 SSW AT N/A FASTEST MILE FOR YESTERDAY..........15 SSW AT 11:06 P.M. HIGHEST ASOS 2 MIN AV...15 SSW AT 11:50 P.M. HIGHEST DAVIS 1 MIN AV...15 SSW AT n/a AVERAGE WIND SPEED AND DIRECTION.. 6.4 SSW ASOS........... 7.0 S / 190 deg. DAVIS.......... 5.8 SSW/ 200 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....+1.57 ASOS..............4.88 TOTAL PRECIPITATION FOR THE YEAR..........38.41 DEPARTURE....+1.65 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 73/58/66/+6/0/.../.. 27 MPH ENE 9/24 72/55/64/+5/0/.../.. 18 MPH SSW Aero 21 MPH SSW 9/25 Morning low 54 degrees.. OUR DAILY EXTREMES.... Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR SEPTEMBER 25 HIGH 87F IN 1970 LOW 31F IN 1950 PRECIP 2.68 INCHES IN 1961 PEAK GUST 63 MPH SSW IN 1991 RECORDS FOR SEPTEMBER 26 HIGH 87F IN 1958 LOW 36F IN 1905,1922,1978 PRECIP 3.84 INCHES IN 1888 PEAK GUST 54e MPH S IN 1977 Today's report: Matt Douglas