BLUE HILL METEOROLOGICAL OBSERVATORY, MILTON, MASSACHUSETTS 02186 ELEVATION 635 FT. ABOVE MSL....10 MILES SSW OF BOSTON, MA THURSDAY APRIL 25 2002 PLEASE VISIT OUR WEB SITE AT: http://www.bluehill.org/ DAILY DISCUSSION.....4/25/2002....2 P.M. Winds are increasing and becoming gusty to almost 40 MPH from the SSE and SE here at the summit early this afternoon. A high temp. of 57 degrees has been recorded as clouds are increasing and thickening in advance of the next weather system. The morning low of 37 was 3 degrees below normal for the date and we've had temperatures averaging 9 degrees colder than average over the past three days TODAY'S OBS.... 4/25/2002 THU 8 A.M. BHO SA 1155 300 -SCT 15 233/44/40/1712/022/ FEW STRA DSSPTG VCNTY STN STRA/THN F DSSPTNG PST HR STRA DSNT SE-S LWR CI S-W VSBY N-NE 20/ 8/601/ 58003 10044 20037 11 A.M. BHO SA 1455 220 SCT 250 -BKN 300 -OVC 60 216/54/29/1619G26/017/ FEW SML CU SW AC DSNT SW-WNW DENSE CI VCNTY STN PK WND 1528/33/ WND 12V19/ 8/132/ 58017 2 P.M. BHO SA 1755 75 SCT E220 BKN 250 OVC 55 180/55/26/1620G30/006/ FEW SML CU DSNT SE OVC PTLY THN AND BINOVC NE-SE CIG LWR SW-NW AC LYR INCRSNG VSBY SW-NW 45 PK WND 1531/43/ WND 12V20/ 8/151/ 56035 10057 20044 THE DATA RECORDED FOR WEDNESDAY APRIL 24.... TEMPERATURES....CALENDAR DAY MIDNIGHT TO MIDNIGHT....EST MAX : 54 MIN: 33 // ASOS MAX: 54 ASOS MIN: 33 NORMAL HIGH AND LOW: 59/39 MEAN 44 [- 5] TOTAL DEPARTURE FOR APRIL TO DATE: +126 deg. THE APRIL TEMPERATURE IS 5 DEGREES ABOVE NORMAL..... PRECIPITATION....ON 04/25 AS OF 8 A.M. 24 HRS ENDING 8 A.M. . 0.00 INS ASOS......................0.00 INS. TOTAL FOR APRIL TO DATE...1.98 INS. STD GAGE DEP. FROM NORMAL........- 1.54 INS. PRECIP. TOTAL YEAR 2002: 12.18 INS. (corrected ) DEPARTURE FROM NORMAL....-4.97 INS. SNOWFALL.... ON 04/25 AS OF 8 A.M. 24 HRS ENDING 7 A.M.... 0.0 INS. APRIL TOTAL SNOWFALL......0.6 INS. SEASONAL TOTAL TO DATE. 39.6 INS. WIND DATA....FOR 04/24... PEAK GUST ASOS: 22 MPH E AT 5:28 P.M. EDT PEAK GUST 420C: 22 MPH E AT 5:28 P.M. EDT PEAK GUST AERO: 24 MPH E AT 5:28 P.M. EDT APRIL 2002 PRELIMINARY DATA....ALL IS CALENDAR DAY DATA.... MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUNSHINE/ OFFICIAL 420C WIND GUST Aero = Aerovane recording wind system 4/1 56/38/47/+6/1.02/0/244/32/ 54 W (Aero 53 MPH W ) 4/2 59/33/46/+4/0/0/582/76/ 37 W 4/3 66/36/51/+9/0.16/0/138/18/ 43 S (Aero 45 MPH WNW ) 4/4 48/31/40/-2/0/0/694/90/ 31 WNW 4/5 44/26/35/-8/0.02/0.6/410/53/ 22 NNW 4/6 45/28/37/-6/T/T/389/50/ 31 NW 4/7 46/23/35/-8/0/0/741/95/ 29 NNW 4/8 55/36/46/+2/0.01/0/023/03/ 32 S 4/9 69/46/58/+14/T/0/440/56/ 46 SSW 4/10 65/47/56/+12/0.12/0/638/81/ 32 NW 4/11 52/38/45/0/0/0/751/95/ 28 E 4/12 65/37/51/+6/0/0/746/94/ 40 S 4/13 74/53/64/+19/T/0/207/26/ 40 SW 4/14 76/53/65/+19/0.06/0/647/81/ 39 W 4/15 62/44/53/+7/0.10/0/209/26/ 22 SSW 4/16 86/44/65/+19/0/0/539/67/ 21 SSW 4/17 93/51/72/+25/0/0/646/80/ 51 NE (new daily record max. temp. ) 4/18 72/45/59/+12/0.17/0/583/72/ 24 NNW 4/19 78/44/61/+14/0.02/0/260/32/ 31 SSW 4/20 68/45/57/+9/T/0/196/24/ 27 N 4/21 56/40/48/0/0/0/450/55/ 33 WNW 4/22 40/35/38/-11/0.27/T/000/00/ 30 E 4/23 44/31/38/-11/0.02/T/.../../ 24 NW 4/24 54/33/44/-5/0/0/761/92/ 22 E 4/25 morning low temp. 37 deg; normal low 40 deg. RECORDS FOR APRIL 25 HIGH 80 IN 1942 LOW 24 IN 1892 PRECIP 1.38 INS 1901 SNOWFALL: TRACE IN 1891,1919,1940,1952,1963,1976,1987,1992 PEAK GUST 66 MPH SE IN 1968 RECORDS FOR APRIL 26 HIGH 83 IN 1908 LOW 23 IN 1919 PRECIP 1.64 INS 1931 SNOWFALL: 1.0 INS. IN 2000 PEAK GUST 53 MPH SSW IN 1996 e = estimated Robert Skilling