BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, MARCH 8, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME PRELIMINARY SNOWFALL TOTAL 29.8 INCHES MARCH 6-8, 2013 Total melted precipitation over 3 inches. Blue Hill Greatest Snowstorms, inches, (1885-2013): 1) 38.7 on Feb 24-28, 1969 2) 30.3 on Mar 3-5, 1960 3) 30.1 on Feb 6-7, 1978 4) 30.0 on Mar 31 - Apr 1, 1997 5) 29.8 on Mar 6-8, 2013 6) 26.6 on Feb 8-9, 2013 7) 24.7 on Feb 17-18, 2003 Greatest March Snowstorms, inches (1885-2013) 1) 30.3 on 3-5 Mar, 1960 2) 30.0 on 31 Mar-1 Apr, 1997 3) 29.8 on 6-8 Mar, 2013 4) 23.0 on 5-7 Mar, 2001 5) 19.5 on 19-20 Mar, 1956 Today's observations: 11 A.M. Weather: Sky obscured by moderate snow and fog, occasional light blowing and drifting of snow Temperature: 28F; Dew Point: 28F; Wind: N at 16G24 kts, Wind: Direction variable NW-NNE Sea-level pressure: 29.96 ins. Hg, rising Visibility: 1/4 mile, moderate snow and fog BHO SA 1555 W4 X 1/4SF 147/28/28/3616G24/996/ OCNL LGT BLWNG/DRFTNG SNW WND 32V03/ 1 P.M. Weather: Sky obscured by moderate snow and fog, occasional light blowing and drifting of snow, total new snow past 2 hours 2.1 inches Temperature: 29F; Dew Point: 29F; Wind: N at 15G24 kts, Wind: Direction variable NW-NE Sea-level pressure: 29.97 ins. Hg, rising Visibility: 1/4 mile, moderate snow and fog 2-hour snowfall: 2.1 ins. 6-hour max. temp: 29F BHO SA 1755 W4 X 1/4SF 150/29/29/3515G24 /997/ OCNL LGT BLWNG/DRFTNG SNW TOTAL NEW SNW PST 2 HRS 2.1 INS WND 31V04/ 8//// 50007 MANUAL 600XX ASOS 60098 10029 20028 WEATHER SUMMARY FOR THURSDAY, MARCH 7 TEMPERATURE (DEGREES F) MAX.....34 NORMAL.....42 MIN.....29 NORMAL.....24 MEAN....32 NORMAL.....33 DEPARTURE FROM 30-YEAR NORMAL.......................-1 TOTAL DEPARTURE FOR THE MONTH......................+22 [+2.9 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............32 DEPARTURE.............0 TOTAL HEATING UNITS FOR THE MONTH...........209 DEPARTURE...........-23 TOTAL HEATING UNITS FOR THE SEASON.........4329 DEPARTURE..........-471 TOTAL HEATING UNITS LAST SEASON TO DATE....3879 DIFFERENCE.........+450 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...............45 NE AT 12:26 A.M. AERO....................45 NE AT 12:26 A.M. ASOS....................49 NNE AT 12:26 A.M. DAVIS...................46 NE AT 12:26 A.M. RMY 47 THE FASTEST MILE FOR YESTERDAY.............32 NE AT 1:15 A.M. * MAXIMUM 2-MINUTE ASOS AVERAGE..............31 NNE AT 9:46 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.............30 NNE AT 9:46 A.M. AVERAGE WIND SPEED AND DIRECTION.........21.6 N ASOS..................21.0 DAVIS.................19.4 NNE [015 deg] *last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M... 0.XX DEPARTURE...........+0.XX ASOS..............1.90 TOTAL PRECIPITATION FOR THE MONTH..........0.XX DEPARTURE...........-0.XX ASOS..............2.46 TOTAL PRECIPITATION FOR THE YEAR...........X.XX DEPARTURE...........-0.XX ASOS..............N/A* *ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals ** Precipitation total from March 7th/8th not finalized yet SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M.........X.X DEPARTURE............+X.X TOTAL SNOWFALL FOR THE MONTH...............X.X DEPARTURE............-X.X TOTAL SNOWFALL FOR THE SEASON.............XX.X DEPARTURE...........+XX.X ** Snowfall total from March 7th/8th not finalized yet PRELIMINARY CLIMATE SUMMARY FOR MARCH 2013 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust RMY: RMY = R.M. Young wind gust recording system added 8/9/2011 TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 3/1 39/33/36/+5/0.00/0.0/.../.. 25 NNW AERO 24 MPH NNW RMY 28 3/2 42/30/36/+5/0.00/0.0/.../.. 18 NW AERO 16 MPH NW RMY 21 3/3 42/30/36/+4/0.01/0.2/.../.. 17 WNW AERO 15 MPH WNW RMY N/A 3/4 39/26/33/+1/T/T/.../.. 32 NW AERO 33 MPH WNW RMY 37 3/5 43/30/37/+5/0/0/.../.. 27 WNW AERO 24 MPH WNW RMY N/A 3/6 37/33/35/+3/..../.../000/00 47 NE AERO 46 MPH NE RMY 51 3/7 34/29/32/-1/..../.../000/00 45 NE AERO 45 MPH NE RMY 47 3/8 the morning low temp: 28F; the normal low is now 24F DAILY RECORDS FOR MARCH 2013 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 8 HIGH 66 IN 2012 LOW 2 IN 1986 PRECIP 2.20 INS. IN 2008 SNOWFALL 8.3 INS. IN 1941 PEAK GUST 69 MPH SSW IN 2008 RECORDS FOR MARCH 9 HIGH 71 IN 2000 LOW 1 IN 2007 PRECIP 2.67 INS. IN 1998 SNOWFALL 6.3 INS. IN 2001 PEAK GUST 102e MPH S IN 1942 [RECORD FOR MONTH] TODAY'S REPORT PREPARED BY: Sean Fankhauser