BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 THURSDAY SEPTEMBER 26 2002 DISCUSSION FOR 9/26/2002....2 P.M. Middle and high clouds cover sky today with sun dimly visible. These clouds are in advance clouds from the far-flung cloud structure associated with Tropical Storm ISIDORE whose center passed near New Orleans this morning. Temperatures are being capped in the lower 60's by the lack of sunshine and northeast wind flow. September continues to average much warmer than normal by more than 4 degrees and the last day to average cooler than normal was way back on the 12th ( -4 degrees ). There have been only four days this month that have averaged cooler than normal. THE OBSERVATIONS FOR YESTERDAY AND TODAY.... 9/25/2002 WED 7 a.m. BHO SA 1155 250 -BKN 300 -BKN 6F 277/55/54/0109/035/ PTCHS STRA DRFTG BLO SMT ALQDS DENSE CI LYR SE-SW CLR SKY BND NW-NE VSBY SE 4 N 9 WNW 20 ABV INVSN ESTMTD TOP 8 HND OVR CTY N HVY DEW/ 8/008/ 53009 10056 20054 11 a.m. BHO SA 1455 E250 OVC 10 289/64/57/0306/038/ SC ALQDS OVC PTLY THN BINOVC NW-NE CLR SKY BND NW-NE HALO HAZY FG BNK 10 ENE/ 8/507/ 51012 2 p.m. BHO SA 1755 18 SCT 250 SCT 300 -BKN 20 279/67/58/0508/035/ FEW MDT CU W HAZY WND 02V09/ 8/508/ 58010 10068 20055 9/26/2002 THU 8 a.m. BHO SA 1155 E180 OVC 30 257/56/52/0410/029/ FEW LWR AC SUN DMLY VSB THN K LYR ALG HRZN SW-NW VSBY SE-SW 20 NW 70 ABV INVSN/ 8/07// 53003 10056 20055 11 a.m. BHO SA 1455 150 SCT E200 OVC 40 253/60/53/0509/028/ SC DSNT SE-S SUN DMLY VSB VSBY NE 55/ 8/517/ 58004 2 P.M. BHO SA 1755 E50 BKN 100 OVC 30 232/61/54/0410/022/ FEW LWR SC RB15E20/ 8/57// 58021 6000/ 10062 20056 THE DATA RECORDED FOR WEDNESDAY SEPTEMBER 25 TEMPERATURES ARE CALENDAR DAY MIDNIGHT TO MIDNIGHT EASTERN STANDARD TIME MAX: 68 MIN: 54 ASOS MAX: 68 ASOS MIN: 54 MEAN: 61 [+ 2] NORMAL HIGH/LOW/MEAN: 68/50/59 SEPTEMBER DEPARTURE TO DATE: +119 deg. SEPTEMBER AVERAGE NOW: 4.6 DEGREES WARMER THAN NORMAL PRECIPITATION FOR 09/26 AS OF 8 A.M. EDT 24 HRS ENDING 8 A.M.......0.00 INS. ASOS......................0.01 INS. SEPTEMBER TOTAL TO DATE...4.20 INS. (standard gage ) DEPARTURE FROM NORMAL....+0.77 INS. SEPTEMBER ASOS TOTAL......N/A PRECIP. TOTAL YEAR 2002...34.76 INS. DEPARTURE FROM NORMAL.....-2.14 INS. ASOS TOTAL FOR 2002.......N/A WIND DATA FOR WEDNESDAY SEPTEMBER 25, 2002 PEAK GUST ASOS: 15 MPH ENE AT 10:11 P.M. EDT PEAK GUST 420C: 16 MPH ENE AT 3:44 A.M. EDT PEAK GUST AERO: 16 MPH ENE AT 3:44 A.M. EDT SEPT. 2002 PRELIMINARY DATA....ALL IS CALENDAR DAY DATA.... BELOW IS ORDER OF DATA REPORTED.... MAX/MIN/MEAN/DEP/PRECIP/SUNSHINE/ OFFICIAL 420C WIND GUST Aero = Aerovane recording wind system gust when significantly higher ... data as yet not available TSTM = thunderstorm day ASOS TWO MINUTE MAXIMUM WIND ON THE RIGHT... ASOS IS AUTOMATED SURFACE OBSERVING SYSTEM 9/1 66/52/59/-8/0.01/46/06/ 18 ENE ASOS 2 MIN MAX = 15 ENE 9/2 63/59/61/-5/0.87/000/00/ 28 NNE ASOS 2 MIN MAX = 20 NE 9/3 68/63/66/0/0.30/000/00/ 25 NE ASOS 2 MIN MAX = 17 NE 9/4 83/64/74/+8/0.12/406/52/ 22 NW/ ASOS 2 MIN MAX = 17 NW/ TSTM 9/5 73/56/65/-1/0/724/93/ 28 NW ASOS 2 MIN MAX = 22 NW 9/6 77/52/65/0/0/767/99/ 21 NNW " 2 MIN MAX = 16 NW 9/7 83/61/72/+8/0/757/98/ 17 SW " " = 14 SW 9/8 87/61/74/+9/0/754/98/ 21 SW " " = 17 SW 9/9 91/65/78/+14/0/729/95/ 20 WSW " " = 16 WSW 9/10 89/67/78/+14/0/504/66/ 28 SSW " " = 22 SSW 9/11 77/54/66/+2/0/251/33/ 58 NW " " = 44 WNW/ Aero gust 62 MPH WNW 9/12 69/48/59/-4/0/759/100/ 37 NW " " = 28 NW / Aero gust 40 MPH WNW 9/13 79/51/65/+2/0/703/93/ 32 WSW " " = 24 WSW 9/14 83/61/72/+9/0/572/76/ 29 S " " = 23 S 9/15 78/67/73/+10/0.42/023/03/ 37 SSW " " = 30 SSW 9/16 76/58/56/+5/1.01/000/00/ 32 S " " = 21 S 9/17 73/57/65/+3/0.00/.../../ 17 NNW " " = 14 NNW 9/18 74/55/64/+4/0.00/.../../ 21 S " " = 16 SSW 9/19 77/57/67/+6/0.00/.../../ 25 SSW " " = 21 S 9/20 77/57/67/+6/0.00/.../../ 28 SSW " " = 23 SSW 9/21 80/62/71/+11/0.00/.../../ 27 SSW " " = 21 SSW 9/22 81/65/73/+13/0.85/.../../ 27 S " " = 23 S/ TSTM 9/23 75/63/69/+9/0.62/.../../ 31 S " " = 23 S/ TSTM 9/24 63/56/60/+1/0/.../../ 28 NE " " = 18 NE 9/25 68/54/61/+2/0/.../../ 15 ENE " " = 13 NE 9/26 morning low temp. 55 degrees; normal low now 50 deg. RECORDS FOR SEPTEMBER 26 HIGH 87 IN 1958 LOW 36 IN 1905,1922,1978 PRECIP 3.84 IN 1888 PEAK GUST 54e S IN 1977 RECORDS FOR SEPTEMBER 27 HIGH 84 IN 1998 LOW 32 IN 1947 PRECIP 2.26 IN 1962 PEAK GUST 100 SSE IN 1985 (HURRICANE GLORIA ) RECORDS FOR SEPTEMBER 28 HIGH 82 IN 1959 LOW 33 IN 1897,1947 PRECIP 1.53 IN 1956 PEAK GUST 69 NE IN 1962 RECORDS FOR SEPTEMBER 29 HIGH 85 IN 1952 LOW 28 IN 1914 PRECIP 2.61 INS. IN 1907 PEAK GUST 51e NW IN 1941 & S IN 1967 RECORDS FOR SEPTEMBER 30 HIGH 84 IN 1986 LOW 31 IN 1992 PRECIP 1.93 IN 1946 PEAK GUST 58 SSE IN 1999 e = estimated Robert Skilling