BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, FEBRUARY 6, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME SOME RAIN AND SNOW THIS MORNING TO BRING DOWN THE DEFICIT A SMALL AMOUNT.... Overnight rainfall was 0.31 inches, with it mostly being ice pellets. This left 0.1 inches on the ground, measured at the 7 A.M. observation. Skies remain cloudy, with very limited visibility due to fog. The best visibility seen today was a mile or so, but was a 1/2 mile on average. Wind has remained easterly, picking up a little in the afternoon. The max gust seen so far today is around 26 mph. The high so far today is 36F, a degree above the normal high of 35F. The low since midnight is 30F, 12 degrees above the normal low of 18F. PRELIMINARY STATS FOR JANUARY 2020 TEMPERATURE, Deg. F Avg. Max. 40.6 [+6.8] Avg. Min. 25.9 [+8.8] Mean 33.3 [+7.8] 24-hour corrected mean: 32.8 Max. for month: 68F on the 12th Min. for month: 8F on the 18th HEATING DEGREE DAYS Total heating units: 978 [-248] Total for the season: 3229 [-302] Total for last season: 3495 PRECIPITATION, Inches Total: 1.46 [-2.89] Greatest in 24 hrs: N/A SNOWFALL, Inches Total: 4.2 [-12.9] Greatest in 24 hrs: 3.0 ins. on the 18th-19th WIND, mph Avg. uncorrected wind speed: 12.3 mph Avg. corrected wind speed: 12.8 mph Prevailing wind direction: W [19%] Peak gust and direction: 60 SSW on the 12th SUNSHINE: Campbell-Stokes card minutes: N/A Astronomical total minutes: N/A JANUARY 2020 RANKED 9TH WARMEST ON RECORD! Warmest 24-Hour Adjusted Mean Temperature, deg F (1886-2020): 1) 35.6 in 1913 2) 35.0 in 1932 3) 34.6 in 1937 4) 33.9 in 2006 5) 33.8 in 1933 33.8 in 1950 33.8 in 1990 8) 33.5 in 2002 9) 32.8 in 2020 10) 32.7 in 2017 Today's Observations: 7 A.M. Weather: Light ice pellets Temperature: 32F; Dew Point: 32F; Wind: E at 12 kts Sea-level pressure: 29.85 ins. Hg: rising, then more slowly Visibility: 1/16 mile, fog 6-hr Max temp: 32F 6-hr Min temp: 30F 24-hr Precip: 0.31 ins. 24-hr Snowfall: 0.1 ins. BHO SA 1155 X W3 1/16IP-F 108/32/32/0912/985/ NEW SNOW PAST 24 HRS 0.1 INS IP-CTD/ 8//// 70031 55018 10032 20030 10 A.M. Weather: Light rain Temperature: 36F; Dew Point: 28F; Wind: E at 12G20 kts Sea-level pressure: 29.76 ins. Hg: falling steadily Visibility: 1/2 mile, fog 3-hr Precip: 0.06 ins. 3-hr Snowfall: Trace BHO SA 1455 X W3 1/2R-F 078/33/33/0812G20/976/ R-CTD/ 8//// 6006/ 56030 1 P.M. Weather: Light rain Temperature: 36F; Dew Point: 36F; Wind: ENE at 14 kts Sea-level pressure: 29.60 ins. Hg: falling rapidly Visibility: 1/16 mile, fog 6-hr Max temp: 36F 6-hr Min temp: 32F 6-hr Precip: 0.10 ins. 6-hr Snowfall: Trace BHO SA 1755 X W3 1/16R-F 023/36/36/0714/960/ R-CTD/ 8//// 6010/ 58055 10036 20032 SUMMARY FOR WEDNESDAY, FEBRUARY 5, 2020 TEMPERATURE (DEGREES F) MAX.....41 NORMAL.....35 MIN.....30 NORMAL.....18 MEAN....36 NORMAL.....26 DEPARTURE FROM 30-YEAR NORMAL....................+10 TOTAL DEPARTURE FOR THE MONTH....................+50 [+9.8 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............29 DEPARTURE.......-10 TOTAL HEATING UNITS FOR THE MONTH..............145 DEPARTURE.......-50 TOTAL HEATING UNITS FOR THE SEASON............3374 DEPARTURE......-352 TOTAL HEATING UNITS LAST SEASON TO DATE.......3659 DEPARTURE......-285 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................20 NNW AT 9:20 A.M. AERO.........................19 NNW AT 9:20 A.M. ASOS.........................19 N AT 9:25 A.M. DAVIS........................19 NNW AT 9:24 A.M. RMY N/A FASTEST MILE FOR YESTERDAY......................11 N AT 5:18 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................13 N AT 9:27 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................13 N AT 5:16 A.M. AVERAGE WIND SPEED AND DIRECTION...............6.5 N ASOS........................7.0 DAVIS.......................6.7 N [3 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.31 DEPARTURE......+0.17 ASOS..............0.31 TOTAL PRECIPITATION FOR THE MONTH..........0.40 DEPARTURE......-0.28 ASOS..............0.42 TOTAL PRECIPITATION FOR THE YEAR...........1.86 DEPARTURE......-3.17 ASOS..............1.96 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.1 DEPARTURE.......-0.4 TOTAL SNOWFALL FOR THE MONTH................0.1 DEPARTURE.......-2.4 TOTAL SNOWFALL FOR THE SEASON..............24.3 DEPARTURE......-11.3 PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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 01/01 38/30/34/+7/..../0.0/400/73 39 W AERO 38 W RMY 41 01/02 46/29/38/+11/0.00/0.0/269/49 28 SW AERO 28 SW RMY 30 01/03 46/40/43/+17/0.00/0.0/000/00 21 SW AERO 18 SW RMY N/A 01/04 46/36/41/+15/..../0.0/000/00 16 NNW AERO 16 NNW RMY N/A 01/05 36/24/30/+4/..../0.5/116/21 43 NW AERO 46 NW RMY 43 01/06 33/23/28/+2/T/T/133/24 26 W AERO 21 W RMY N/A 01/07 38/29/34/+8/..../0.4/161/29 30 WSW AERO 28 WSW RMY N/A 01/08 39/22/31/+5/..../0.4/350/63 50 W AERO 46 WNW RMY 47 01/09 28/16/22/-4/..../0.0/540/97 43 WNW AERO 40 WNW RMY N/A 01/10 48/23/36/+11/T/..../0.0/106/19 37 SW AERO 37 SW RMY 39 01/11 65/46/56/+31/..../0.0/408/73 53 SSW AERO 53 SSW RMY N/A 01/12 68/36/52/+27/..../0.0/297/53 60 SSW AERO 62 SSW RMY N/A 01/13 39/31/35/+10/0.01/T/000/00 21 NE AERO 20 NE RMY N/A 01/14 38/31/35/+10/0.01/0.0/000/00 16 W AERO 15 W RMY N/A 01/15 48/35/42/+17/0.00/0.0/503/89 24 W AERO 23 W RMY 24 01/16 42/24/33/+8/0.06/T/142/25 54 W AERO 52 W RMY 59 01/17 24/10/17/-8/0.00/0.0/552/97 50 NW AERO 48 NW RMY N/A 01/18 28/8/18/-7/0.35/2.8/000/00 28 WSW AERO 24 ESE RMY N/A 01/19 40/21/31/+6/0.02/0.2/332/58 44 W AERO 44 W RMY 42 01/20 26/12/19/-6/0.00/0.0/442/77 33 NW AERO 32 NW RMY N/A 01/21 24/10/17/-8/0.00/0.0/472/82 22 NW AERO 21 NW RMY N/A 01/22 34/13/24/-1/0.00/0.0/566/98 16 SW AERO 16 SW RMY N/A 01/23 46/26/36/+11/0.00/0.0/348/60 21 SW AERO 20 SW RMY 19 01/24 44/31/38/+13/0.00/0.0/524/90 21 ENE AERO 17 ENE RMY N/A 01/25 50/36/43/+18/0.57/0.0/..../.. 41 ESE AERO 41 ESE RMY 40 01/26 49/35/42/+17/0.00/0.0/..../.. 33 W AERO 31 W RMY 32 01/27 43/33/38/+13/0.00/0.0/..../.. 30 W AERO 29 W RMY 29 01/28 37/30/34/+9/0.00/0.0/..../.. 25 NW AERO 25 NW RMY 27 01/29 38/23/31/+6/0.00/0.0/..../.. 24 N AERO 23 N RMY 24 01/30 34/16/25/-1/0.00/0.0/..../.. 17 NNW AERO 16 NNW RMY N/A 01/31 43/24/34/+8/0.00/0.0/..../.. 22 S AERO 21 S RMY 22 DAILY RECORDS FOR JANUARY 1/11/20: DAILY RECORD MAXIMUM TEMPERATURE OF 65F, BREAKS PREVIOUS RECORD OF 60F SET IN 1975. 1/11/20: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 46F, BREAKS PREVIOUS RECORD OF 40F SET IN 1983. 1/12/20: DAILY RECORD MAXIMUM TEMPERATURE OF 68F, BREAKS PREVIOUS RECORD OF 60 SET IN 2018. TIES HIGHEST MAXIMUM TEMPERATURE FOR JANUARY, MATCHES 68F SET ON 1/26/1950. 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/..../.. 14 WSW AERO 14 WSW RMY N/A 02/02 40/30/35/+9/0.00/0.0/..../.. 18 W AERO 18 WNW RMY 18 02/03 44/27/36/+10/0.00/0.0/..../.. 28 W AERO 28 W RMY 28 02/04 44/33/39/+13/0.00/0.0/..../.. 19 E AERO 16 E RMY 18 02/05 41/30/36/+10/0.00/0.0/..../.. 20 NNW AERO 19 NNW RMY N/A 02/06 The low since midnight is 30F, daily normal minimum is 18F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 6 HIGH 54F IN 1909 LOW -10F IN 1895 PRECIP 1.88 INS. IN 1896 SNOWFALL 13.0 INS. IN 1978 [BLIZZARD OF 1978] PEAK GUST 84e MPH NE IN 1978 RECORDS FOR FEBRUARY 7 HIGH 51F IN 1951,1953 LOW -8F IN 1910 PRECIP 2.12 INS. IN 1983 SNOWFALL 17.1 INS. IN 1978 [BLIZZARD OF 1978] PEAK GUST 87e MPH SSE IN 1951 TODAY'S REPORT PREPARED BY: Benjamin Turner