BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, FEBRUARY 19, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME A FAIR WEATHER DAY FOLLOWING SOME OVERNIGHT RAINFALL; WITH A DECENT WESTERLY WIND.... Today we are experiencing partly cloudy skies with excellent visibility, a contrast to the cloudy skies of yesterday. Visibility has been 85 miles all day, with snowy cap of Grand Monadnock easily recognizable. Rain that fell overnight amounted to 0.31 inches, with the clouds moving quickly offshore this morning. Wind is westerly, with speeds up to 40 mph.   The high so far today is 42F degrees, this is 4 degrees above the normal for the date. The low since midnight is 34F, 14 degrees above the normal daily minimum of 20F. Today's Observations: 7 A.M. Weather: Broken altostratus Temperature: 35F; Dew Point: 28F; Wind: W at 12 kts Relative Humidity: 75% Sea-level pressure: 30.04 ins. Hg: falling then rising Visibility: 85 miles 6-hr Max temp: 37F 6-hr Min temp: 35F 24-hr Precip:  0.31 ins. 24-hr Snowfall: Trace BHO SA 1155 E110 BKN 85 173/35/28/2812/004/ 8/070 70031 51027 10037 20035 10 A.M. Weather: Scattered cumulus, scattered altocumulus Temperature: 39F; Dew Point: 22F; Wind: WNW at 19G34 kts Relative Humidity: 49% Sea-level pressure: 30.04 ins. Hg: steady Visibility: 85 miles 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 50 SCT 110 SCT 85 173/39/22/2919G34/004/ PK WND 2834/43/ 8/170 54000 1 P.M. Weather: Scattered cumulus, broken cirrus Temperature: 40F; Dew Point: 17F; Wind: W at 22G30 kts, Peak wind: 45 MPH (39 kts) W at 12:13 P.M. Relative Humidity: 39% Sea-level pressure: 30.04 ins. Hg: steady Visibility: 85 miles 6-hr Max temp: 42F 6-hr Min temp: 35F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 50 SCT E250 BKN 85 173/40/17/2822G30/004/ PK WND 2839/13/ 8/102 54000 10042 20035     SUMMARY FOR TUESDAY, FEBRUARY 18, 2020 TEMPERATURE (DEGREES F) MAX.....37   NORMAL.....37 MIN.....27   NORMAL.....20 MEAN....32   NORMAL.....29 DEPARTURE FROM 30-YEAR NORMAL................... +3 TOTAL DEPARTURE FOR THE MONTH...................+100 [+5.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............33  DEPARTURE....... -3 TOTAL HEATING UNITS FOR THE MONTH..............583  DEPARTURE......-101 TOTAL HEATING UNITS FOR THE SEASON............3812  DEPARTURE......-403 TOTAL HEATING UNITS LAST SEASON TO DATE.......4103  DEPARTURE......-291 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................26 SE  AT  1:06 P.M.                      AERO.........................26 SE  AT  1:06 P.M.                      ASOS.........................26 SE  AT  1:04 P.M.                    DAVIS........................26 ESE AT  1:04 P.M. RMY N/A FASTEST MILE FOR YESTERDAY......................18 SE  AT  1:05 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................18 SE  AT  1:05 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................20 SE  AT  1:05 P.M. AVERAGE WIND SPEED AND DIRECTION.............10.4 ESE                                   ASOS......................10.4                    DAVIS.....................10.9 ESE [106 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.31  DEPARTURE......+0.16                          ASOS..............0.30 TOTAL PRECIPITATION FOR THE MONTH..........2.20  DEPARTURE......-0.31                          ASOS..............2.30 TOTAL PRECIPITATION FOR THE YEAR...........3.66  DEPARTURE......-3.37                          ASOS..............3.84 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5 TOTAL SNOWFALL FOR THE MONTH................0.6  DEPARTURE.......-8.3 TOTAL SNOWFALL FOR THE SEASON..............24.8  DEPARTURE......-17.2 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  31/30/34/+8/0.00/0.0/..../..        29 E   AERO 28 E   RMY 27 02/07  53/25/39/+12/..../0.1/..../..       71 WSW AERO 71 SSW RMY 73 02/08  33/20/27/0/T/T/..../..              46 W   AERO 44 W   RMY 44 02/09  33/15/24/-3/T/T/..../..             30 SSE AERO 29 SSE RMY N/A 02/10  42/33/38/+11/..../0.0/..../..       39 SSW AERO 39 SSW RMY 39 02/11  40/36/38/+11/..../0.0/..../..       24 W   AERO 23 W   RMY N/A 02/12  41/30/36/+9/0.00/0.0/..../..        37 W   AERO 36 W   RMY N/A 02/13  35/31/34/+6/.00/0.0/..../..         29 SSW AERO 29 SSW RMY N/A 02/14  33/8/21/-7/0.00/0.0/..../..         32 WNW AERO 32 NW  RMY 34 02/15  27/4/16/-12/0.00/0.0/..../..        31 SSW AERO 31 SSW RMY N/A 02/16  40/23/32/+4/0.00/0.0/..../..        38 SW  AERO 38 SW  RMY N/A 02/17  44/28/36/+8/0.00/0.0/..../..        25 WNW AERO 24 WNW RMY 24 02/18  37/27/32/+3/0.31/T/..../..          26 SE  AERO 26 SE  RMY N/A 02/19 The low since midnight is 34F, daily normal minimum is 20F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR FEBRUARY 19 HIGH 66F IN 1981 LOW -5F IN 1923 PRECIP 2.73 INCHES IN 1972 SNOWFALL 12.0 INCHES IN 1893 PEAK GUST 76 MPH ENE IN 1972 RECORDS FOR FEBRUARY 20 HIGH 68F IN 2018 LOW -4F IN 1966 PRECIP 1.90 INCHES IN 1934 SNOWFALL 15.0 INCHES IN 1921,1934 PEAK GUST 78 MPH NW IN 1972 TODAY'S REPORT PREPARED BY: Benjamin Turner