BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, MARCH 7, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME STRONG OCEAN STORM BRUSHES THE REGION WITH SOME SNOW OVERNIGHT; CLEARING SKIES, GUSTY WINDS, AND EXCELLENT VISIBILITY LEFT IN IT'S WAKE TODAY... We had a taste of winter last night with a period of snow and gusty northeast winds. 0.8" of snow was measured here on the summit, which melted down to 0.07" of liquid. The temperature dropped rapidly once precipitation started last night, so much in fact it allowed the snow to dry out some, thus a snow to water ratio slightly over 10:1. Winds frequently gusted 35-45mph last night into early this morning with a peak gust of 46 mph occurring at 9:37pm out of the northeast. Today skies cleared out in the wake of the ocean storm with a gusty north to northwest wind continuing. The dew point plummeted this morning down into the low single digits. This has helped with clearing the air significantly, as such visibility has been a perfect 90 miles all day! The high so far today is 41F, this is 1 degree below the normal high of 42F. The low since midnight is 26F, 2 degrees above the normal low of 24F. PRELIMINARY STATS FOR FEBRUARY 2020 TEMPERATURE, Deg. F Avg. Max. 40.7 [+3.9] Avg. Min. 25.9 [+6.7] Mean      33.3 [+5.4] 24-hour corrected mean: 33.3 Max. for month: 60F on the 24th Min. for month: 4F on the 15th HEATING DEGREE DAYS Total heating units:    911 [-164] Total for the season:  4140 [-345] Total for last season: 4485 PRECIPITATION, Inches Total: 3.20 [-0.87] Greatest in 24 hrs: N/A SNOWFALL, Inches Total: 0.6 [-13.3] Greatest in 24 hrs: 0.5 ins. on the 13th WIND, mph Avg. uncorrected wind speed: 11.5 mph Avg. corrected wind speed:   12.0 mph Prevailing wind direction:   W [24%] Peak gust and direction:     71 WSW on the 7th SUNSHINE: Campbell-Stokes card minutes: 7596 minutes of possible 17796 or 43% Astronomical total minutes: 7853 minutes of possible 18422 or 43% Today's Observations: 7 A.M. Weather: Scattered Altostratus, overcast altostratus, few stratocumulus NE-SE-SW Temperature: 27F; Dew Point: 0F; Relative Humidity: 31% Wind: N at 16G26 kts, peak wind N at 35kts at 6:12 A.M. Sea-level pressure: 29.98 ins. Hg: rising, then more rapidly Visibility: 90 miles 6-hr Max temp: 29F 6-hr Min temp: 26F 24-hr Precip:  0.07 ins. 24-hr Snowfall: 0.8 ins. BHO SA 1155 110 SCT E150 OVC 90 152/27/0/3516G26/998/ BINOVC DSNT W-N FEW SC NE-SE-SW HIER CLDS VSBL DSNT W-NW PK WND 3535/12/ TOTAL NEW SNW PST 24HRS 0.8 INS/ 8/52/ 4/001 53033 6/// 70007 10029 20026 10 A.M. Weather: Scattered altostratus, thin broken cirrus, few stratocumulus distant E-SE Temperature: 33F; Dew Point: 0F; Relative Humidity: 24% Wind: N at 18G29 kts, peak wind N at 35kts at 9:02 A.M. Sea-level pressure: 30.06 ins. Hg: rising, then more rapidly Visibility: 90 miles 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 150 SCT E250 –BKN 90 179/33/0/3518G29/006/ FEW SC DSNT E-SE PK WND 3635/02/ 8/521 53027 1 P.M. Weather: Thin broken cirrus Temperature: 40F; Dew Point: 1F; Relative Humidity: 19% Wind: NW at 15G27 kts, peak wind N at 28kts at 12:08 P.M. Sea-level pressure: 30.09 ins. Hg: rising, then more slowly Visibility: 90 miles 6-hr Max temp: 41F 6-hr Min temp: 26F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 E250 –BKN 90 191/40/1/3315G27/009/ PK WND 3528/08/ 8/001 4/000 51012 10041 20026 SUMMARY FOR FRIDAY, MARCH 6, 2020 TEMPERATURE (DEGREES F) MAX.....47   NORMAL.....41 MIN.....30   NORMAL.....23 MEAN....39   NORMAL.....32 DEPARTURE FROM 30-YEAR NORMAL....................+7 TOTAL DEPARTURE FOR THE MONTH...................+52 [+8.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............26  DEPARTURE........-7 TOTAL HEATING UNITS FOR THE MONTH..............148  DEPARTURE.......-51 TOTAL HEATING UNITS FOR THE SEASON............4288  DEPARTURE......-479 TOTAL HEATING UNITS LAST SEASON TO DATE.......4721  DEPARTURE......-433 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................46 NE  AT   9:37 P.M.                      AERO.........................45 NE  AT   8:35 P.M.                      ASOS.........................45 NE  AT   8:34 P.M.                    DAVIS........................43 NE  AT   9:42 P.M. RMY 46 FASTEST MILE FOR YESTERDAY......................33 ENE AT   8:24 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................29 ENE AT   8:26 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................30 ENE AT   8:26 P.M. AVERAGE WIND SPEED AND DIRECTION..............12.8 E                                   ASOS.......................13.1                    DAVIS......................13.0 E [082 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.07  DEPARTURE......-0.10                          ASOS..............0.08 TOTAL PRECIPITATION FOR THE MONTH..........0.16  DEPARTURE......-0.88                          ASOS..............0.19 TOTAL PRECIPITATION FOR THE YEAR...........4.82  DEPARTURE......-4.64                          ASOS..............5.10 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.8  DEPARTURE.......+0.3 TOTAL SNOWFALL FOR THE MONTH................0.8  DEPARTURE.......-2.3 TOTAL SNOWFALL FOR THE SEASON..............25.6  DEPARTURE......-24.5 PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST AERO: Aerovane wind recording system gust RMY:  R.M. Young wind gust recording system TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized M:    Missing data 02/01  38/30/34/+8/0.01/T/000/00          14 WSW AERO 14 WSW RMY N/A 02/02  40/30/35/+9/0.00/0.0/078/13        18 W   AERO 18 WNW RMY 18 02/03  44/27/36/+10/0.00/0.0/260/43       28 W   AERO 28 W   RMY 28 02/04  44/33/39/+13/0.00/0.0/055/09       19 E   AERO 16 E   RMY 18 02/05  41/30/36/+10/0.00/0.0/000/00       20 NNW AERO 19 NNW RMY N/A 02/06  31/30/34/+8/0.00/0.0/000/00        29 E   AERO 28 E   RMY 27 02/07  53/25/39/+12/..../0.1/000/00     71 WSW AERO 71 SSW RMY 73 02/08  33/20/27/0/T/T/616/100            46 W   AERO 44 W   RMY 44 02/09  33/15/24/-3/T/T/303/49             30 SSE AERO 29 SSE RMY N/A 02/10  42/33/38/+11/..../0.0/000/00       39 SSW AERO 39 SSW RMY 39 02/11  40/36/38/+11/..../0.0/000/00     24 W   AERO 23 W   RMY N/A 02/12  41/30/36/+9/0.00/0.0/314/50        37 W   AERO 36 W   RMY N/A 02/13  35/31/34/+6/..../0.5/000/00     29 SSW AERO 29 SSW RMY N/A 02/14  33/8/21/-7/0.00/0.0/506/80         32 WNW AERO 32 NW  RMY 34 02/15  27/4/16/-12/0.00/0.0/508/80        31 SSW AERO 31 SSW RMY N/A 02/16  40/23/32/+4/0.00/0.0/006/01        38 SW  AERO 38 SW  RMY N/A 02/17  44/28/36/+8/0.00/0.0/582/91        25 WNW AERO 24 WNW RMY 24 02/18  37/27/32/+3/0.31/T/000/00          26 SE  AERO 26 SE  RMY N/A 02/19  42/25/34/+5/0.00/0.0/530/82        45 W   AERO 46 W   RMY 44 02/20  31/18/25/-4/0.00/0.0/389/60        32 W   AERO 32 W   RMY N/A 02/21  30/11/21/-8/0.00/0.0/651/100       24 NNW AERO 21 N   RMY N/A 02/22  44/23/34/+5/0.00/0.0/647/99        26 W   AERO 24 W   RMY 27 02/23  53/30/42/+12/0.00/0.0/636/97       21 SW  AERO 22 WSW RMY 23 02/24  60/32/46/+16/0.00/0.0/606/92       29 S   AERO 29 SSW RMY 31 02/25  53/40/47/+17/..../0.0/033/05     17 NE  AERO 18 ENE RMY 17 02/26  45/39/42/+12/..../0.0/007/01    23 ENE AERO 24 E   RMY N/A 02/27  49/27/38/+7/0.00/0.0/274/41        51 W   AERO 53 W   RMY 52 02/28  36/25/31/0/0.00/0.0/596/89        38 SW  AERO 38 SW  RMY 36 02/29  35/19/27/-4/0.00/0.0/256/38        32 W   AERO 32 W   RMY 34 PRELIMINARY CLIMATE SUMMARY FOR MARCH CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST AERO: Aerovane wind recording system gust RMY:  R.M. Young wind gust recording system TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized M:    Missing data 03/01  33/15/24/-7/0.00/0.0/..../..        28 WNW AERO 28 WNW RMY 27 03/02  52/24/38/+7/T/T/..../..             40 S   AERO 39 S   RMY 41 03/03  64/45/55/+23/..../.../..../..       30 S   AERO 30 S   RMY N/A 03/04  50/38/44/+12/..../.../..../..       56 W   AERO 56 W   RMY 58 03/05  51/32/42/+10/..../.../..../..       31 W   AERO 31 NW  RMY 32 03/06  47/30/39/+7/..../.../..../..        46 NE  AERO 45 NE  RMY 46 03/07 The low since midnight is 26F, daily normal minimum is 24F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR MARCH 7 HIGH 66 IN 1946 LOW -1 IN 1890 PRECIP 2.05 INS. IN 1967 SNOWFALL 11.5 INS. IN 2013 PEAK GUST 66 MPH NE IN 1962 RECORDS FOR MARCH 8 HIGH 66 IN 2012 LOW 2 IN 1986 PRECIP 2.20 INS. IN 2008 SNOWFALL 18.0 INS. IN 2013 PEAK GUST 69 MPH SSW IN 2008 TODAY'S REPORT PREPARED BY: Matt Douglas