BLUE HILL METEOROLOGICAL OBSERVATORY, MILTON, MASSACHUSETTS 02186 ELEVATION 635 FT. ABOVE MSL....10 MILES SSW OF BOSTON, MA THURSDAY SEPTEMBER 20 2001 PLEASE VISIT OUR WEB SITE AT: http://www.bluehill.org/ DAILY DISCUSSION.....9/20/2001 BRIGHT SUNNY DAYS COME TO AN END TODAY.. HOWEVER THE POSSIBLE SUNSHINE THROUGH THE FIRST 18 DAYS OF SEPTEMBER....NO DOUBT AN ALL-TIME RECORD... Today is the first cloudy day since last Friday, however prior to today, we had what seemed to be an endless stream of sunny days. Tuesday had 90% of the possible sunshine and every day with the exception of the 14th has had 90% plus sunshine starting Sept. 11th. TODAY'S OBSERVATIONS.... 8 A.M. BHO SA 1155 E1 BKN 70 BKN 200 OVC 8 238/59/59/1416/023/ STRAFRA DRFTG OVR SMT THN SPTS IOVC/ 8/53// 53003 10059 20057 11 A.M. BHO SA 1455 E20 BKN 160 OVC 15 238/67/62/1517G22/023/ 8/53// 54000 DATA RECORDED FOR WEDNESDAY SEPTEMBER 19..... TEMPERATURES.... MAX 68 MIN 57 // ASOS MAX 68 ASOS MIN 57 NORMAL HIGH AND LOW: 70/52 MEAN 63 [ + 2] TOTAL DEP FOR MONTH TO DATE: +37 degrees PRECIPITATION....ON 9/20 AS OF 8 A.M. 24 HRS ENDING 8 A.M. ..0.00 IN. ASOS..............................0.07 IN. (manually tipped by Technician) SEPT. TOTAL TO DATE: 0.75 IN. DEP. FROM NORMAL: - 1.72 IN. YEAR 2001 TO DATE: 38.11 {+ 4.19 INS. ] WIND DATA....FOR 9/19.. PEAK GUST ASOS: 23 MPH ENE AT 1:52 P.M. PEAK GUST: 23 MPH ENE AT 11:07 A.M. PEAK GUST AERO: 22 MPH ENE AT 11:07 A.M. DAILY SEPT. 2001 DATA....AT BLUE HILL... max/min/mean/dep/precip/sun mins/%/pk gust/TSTM = thunderstorm day (Aero = the aerovane wind system ) 9/1 77/55/66/+0/T/560/71/ 30 NW 9/2 71/50/61/-5/0/755/96/ 18 SSE 9/3 75/55/65/-1/0/767/98/ 25 S 9/4 79/56/68/+3/0.24/375/48/ 46 W (Aero 43 mph W)(Maximum, Inc. 46 MPH WNW) TSTM 9/5 72/55/64/-1/0/730/94/ 30 NNW . 9/6 75/50/63/-2/0/751/97/ 17 WSW 9/7 84/58/71/+6/0/733/95/ 24 SW 9/8 84/62/73/+9/0/615/80/ 25 SSW 9/9 85/65/75/+11/0/659/86/ 27 S 9/10 85/65/75/+11/0/649/85/ 27 S 9/11 79/60/69/+7/0/715/94/ 27 NW 9/12 75/54/65/+2/0/743/98/ 20 NW 9/13 84/56/70/+7/0.14/710/94/ 23 W TSTM 9/14 59/49/54/-8/0.37/000/00/ 44 W TSTM (Aero 47 MPH WNW) 9/15 64/44/54/-8/0/742/99/ 18 NNW 9/16 73/49/61/-1/0/732/98/ 16 SSW 9/17 73/52/63/+2/0/692/93/ 16 SSW 9/18 74/54/64/+3/0/667/90/ 18 ENE 9/19 68/57/63/+2/0/.../../ 23 ENE 9/20 morning low 57 degrees RECORDS FOR SEPTEMBER 20 HIGH 90 IN 1983 LOW 34 IN 1979 PRECIP 4.57 INS 1899 PEAK GUST 44 MPH NE IN 1972 RECORDS FOR SEPTEMBER 21 HIGH 91 IN 1895 LOW 35 IN 1929, 1956 PRECIP 5.58 INS 1961 PEAK GUST 186 MPH S IN 1938 (Hurricane of 1938) e = estimated MFD