BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 WEDNESDAY SEPTEMBER 25 2002 DISCUSSION FOR 9/25/2002....2 P.M. Cooler temperatures but still our morning low of 54 degrees was 4 degrees warmer than normal. Yesterday's lack of sunshine prevented the thermometer from rising to anything close to the normal of 68 as we recorded a cool 63 for a maximum. THE OBSERVATIONS FOR TODAY... 9/24/2002 TUE 8 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 20 279/68/58/0508/035/ FEW MDT CU W HAZY VSBY NE-E 10 FG BANK 10 NE-E VSBY 45 WNW HAZY ALQDS WND 02V09/ 8/508/ 58010 10068 20055 THE DATA RECORDED FOR TUESDAY SEPTEMBER 24 TEMPERATURES ARE CALENDAR DAY MIDNIGHT TO MIDNIGHT EASTERN STANDARD TIME MAX: 63 MIN: 56 ASOS MAX: 63 ASOS MIN: 56 MEAN: 60 [+ 1] NORMAL HIGH/LOW/MEAN: 68/50/59 SEPTEMBER DEPARTURE TO DATE: +117 deg. SEPTEMBER AVERAGE NOW: 4.7 DEGREES WARMER THAN NORMAL PRECIPITATION FOR 09/25 AS OF 8 A.M. EDT 24 HRS ENDING 8 A.M.......0.00 INS. ASOS......................0.01 INS. (condensation) SEPTEMBER TOTAL TO DATE...4.20 INS. (standard gage ) DEPARTURE FROM NORMAL....+0.91 INS. SEPTEMBER ASOS TOTAL......N/A PRECIP. TOTAL YEAR 2002...34.76 INS. DEPARTURE FROM NORMAL.....-2.00 INS. ASOS TOTAL FOR 2002.......N/A WIND DATA FOR TUESDAY SEPTEMBER 24, 2002 PEAK GUST ASOS: 24 MPH NE AT 3:25 A.M. EDT PEAK GUST 420C: 28 MPH NE AT 3:44 A.M. EDT PEAK GUST AERO: 28 MPH NE 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 morning low temp. 54 deg; normal low now 50 deg. RECORDS FOR SEPTEMBER 25 HIGH 87 IN 1970 LOW 31 IN 1950 PRECIP 2.68 IN 1961 PEAK GUST 63 SSW IN 1991 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 ) e = estimated Robert Skilling/Karina Leppik