BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, MARCH 25, 2005 TODAY'S DISCUSSION..... SNOWSTORM MARCH 23-24 OF 5.4 INCHES RAISES SEASONAL TOTAL TO 119.2 INCHES.....STILL RANKING THIRD GREATEST ON ENTIRE RECORD 1. 144.4 in 1995-96 2. 136.0 in 1947-48 3. 119.2 in 2004-05 4. 113.1 in 2002-03 TODAY'S OBSERVATIONS 3/25/2005 FRI 7 a.m. clear with just a few clouds and 20 miles visibility with some thin fog and haze and 32 deg; dewpoint 27; wind sw at 13 mph; barometer 29.93 rising slightly; six hourly min. temp. 30 deg; 24 hour precipitation 0.12 inch; 24 hour snowfall 1.3 ins.; storm total 5.4 ins; storm total melted precip. 0.59 inch; snow depth on ground at 7 a.m. this morning, 4 inches... BHO SA 1155 CLR 20 136/32/27/2311/993/ AC WSW-NW-ENE FEW CI S-SW THN FH ALQDS TOTAL NEW SNW PST 24 HRS 1.3 INS STORM TOTAL 5.4 INS/ 8/031 4/004 ASOS 70013 MANUAL 70012 10032 20030 10 a.m. high thin broken clouds with 30 miles visibility and light haze; temp. 44; dewpoint 30; wind west at 16 gusting 23 mph... BHO SA 1455 120 SCT 300 -BKN 30 139/44/30/2614G20/994/ SC FRMG ALQDS WND 24V30 GRDLY VEERING LGT HZ/ 8/531 53003 1 p.m. mostly cloudy with 35 miles visibility but 45 miles to the west; temp. 44; dewpoint 29; wind west at 15 gusting to 24 mph; six hourly max. temp. 46 deg. BHO SA 1755 E37 BKN 100 BKN 220 BKN 35 130/44/29/2813G21/991/ 37 BKN V SCT PTCHS DENSE CI LGT HZ VSBY WNW 45/ 58009 8/532 10046 20032 WEATHER SUMMARY FOR THURSDAY MARCH 24: TEMPERATURE (DEGREES F) MAX.....37 NORMAL.....47 HAZEN 37.2 @ 4:52 P.M. MIN.....31 NORMAL.....30 HAZEN 30.7 @ 12:40 A.M. MEAN....34 NORMAL.....39 DEPARTURE FROM 30-YEAR NORMAL...... - 5 TOTAL DEPARTURE FOR THE MONTH......-110 (-4.8 DEGREES/DAY) PRECIPITATION (INCHES) THROUGH THIS MORNING TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.12 DEPARTURE....-0.04 ASOS..............0.13 TOTAL PRECIPITATION FOR THE MONTH..........3.61 DEPARTURE....-0.10 ASOS..............3.35 TOTAL PRECIPITATION FOR THE YEAR..........13.95 DEPARTURE....+1.40 ASOS.............12.96 SNOWFALL (INCHES) THROUGH THIS MORNING TOTAL SNOWFALL 24 HRS ENDING 7 A.M........ 1.3 DEPARTURE.....+1.0 TOTAL SNOWFALL FOR THE MONTH.............. 25.0 DEPARTURE....+14.8 TOTAL SNOWFALL FOR THE SEASON.............119.2 DEPARTURE....+63.6 TOTAL SNOW ON THE GROUND.................... 4 ** ** An average of 9 to 11 inches is being measured in the clearing surrounded by trees a short distance northeast of the Observatory! But this amount cannot be reasonably included for the official snow on the ground amount. Measuring in the instrument area we have a wide range but an average of about 4 inches has been placed on the record this morning. This would include 2 inches left from the last snowfall and 2 inches of the very old snow. YESTERDAY'S PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........40 N AT 8:52 A.M. AEROVANE.........41 NNE AT 4:13 A.M. ASOS.............38 NE AT 6:15 A.M. DAVIS............35 NNE AT 3:39 A.M. FASTEST MILE FOR YESTERDAY......... 26 NNE AT 5:15 A.M. * MAXIMUM 2-MINUTE ASOS AVERAGE.......26 NNE AT 4:25 A.M. MAXIMUM 1-MINUTE DAVIS AVERAGE......26 NNE AT 10:47 A.M. * last of several occurrences YESTERDAY'S AVERAGE WIND SPEEDS... OUR AVERAGE SPEED AND DIRECTION.....13.7 NNE ASOS AVERAGE AND DIRECTION..........14.0 NE [040 deg.] DAVIS AVERAGE AND DIRECTION.........13.1 NNE [030 deg.] THE PRELIMINARY CLIMATE SUMMARY FOR MARCH 2005...... CALENDAR DAY DATA DATA REPORTED HERE ENDING MIDNIGHT: DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 3/1 29/23/26/-6/0.53/3.6/000/00 52 MPH NNE Aero 52 MPH NNE 3/2 33/20/27/-5/T/T/264/39 42 MPH W Aero 45 MPH W 3/3 28/15/22/-10/0/0/640/94 43 MPH W Aero 43 MPH W 3/4 31/12/22/-11/0/0/561/82 40 MPH W Aero 44 MPH W 3/5 39/18/29/-4/0/0/679/99 29 MPH W 3/6 40/24/32/-1/0/0/345/50 42 MPH SSW Aero 44 MPH SSW 3/7 47/33/40/+7/0/0/201/29 45 MPH S Aero 50 MPH SSE 3/8 42/12/27/-7/1.20/5.7/000/00 63 MPH WNW Aero 66 MPH WNW 3/9 21/06/14/-20/0.02/0.3/663/95 54 MPH W Aero 58 MPH W 3/10 29/11/20/-14/0/0/673/96 29 MPH WSW 3/11 32/18/26/-10/0.07/1.0/134/19 29 MPH E 3/12 34/28/31/-4/1.19/8.9/000/00 27 MPH NE 3/13 37/25/31/-4/0.01/0.1/291/41 25 MPH W 3/14 39/21/30/-6/0/0/669/94 31 MPH WNW 3/15 44/24/34/-2/0/0/512/72 30 MPH WNW 3/16 43/26/35/-1/0/0/675/94 29 MPH W 3/17 43/23/33/-4/0/0/606/84 25 MPH WNW 3/18 43/29/36/-1/0/0/506/70 27 MPH WNW 3/19 45/25/35/-2/0/0/697/96 28 MPH WNW Aero 31 MPH WNW 3/20 48/28/38/0/T/0/365/50 27 MPH SSW 3/21 41/33/37/-1/0/0/007/01 21 MPH NNE 3/22 52/29/41/+3/0/0/720/98 29 MPH W 3/23 42/30/36/-2/0.12/1.0/022/03 36 MPH ENE 3/24 37/31/34/-5/0.47/4.4/022/03 40 MPH N Aero 41 MPH NNE 3/25 morning low temp. 30 (Hazen 29.8 @ 5:01 a.m.) There are no new daily records set for March to date.... DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 25 HIGH 76 IN 1910 LOW 08 IN 1888,1956 PRECIP 1.84 INCHES IN 1909 SNOWFALL 1.0 INCHES IN 1912 PEAK GUST 69 MPH SE IN 1969 RECORDS FOR MARCH 26 HIGH 76 IN 1922,1949 LOW 06 IN 1960 PRECIP 1.99 INCHES IN 1988 SNOWFALL 5.4 INCHES IN 2001 PEAK GUST 63 MPH S IN 1970 TODAY'S REPORT BY: Robert Skilling