BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, FEBRUARY 15, 2017   ALL TIMES ARE IN EASTERN STANDARD TIME OVERCAST AND FOGGY BEFORE PRECIPITATION  With precipitation expected dew points rose to the mid 30s creating foggy conditions on the top of the hill. Visibility ranged from only 1 mile this morning to 30 miles at 1 PM ob. Temperatures remained slightly below normal but we still had melting slushy snow starting mid morning. Winds were coming from the SE today with an average of about 15 MPH.  Today's Observations: 7 A.M. Weather: Broken cirrus, few altocumulus SW-W Temperature: 29F; Dew Point: 28F; Wind: SSE at 14 kts Sea-level pressure: 29.61 ins. Hg, falling, then more slowly Visibility: 10 miles, except 1V3 NW-SE, Fog NW-SE 6-hr Max temp: 29F 6-hr Min temp: 25F 24-hr precip: 0.00 in. 24-hr snowfall: 0.0 in. BHO SA 1155 E250 BKN 10 028/29/28/1514/961/ FEW AC SW-W  FG NW-SE DSNT FG SE-NW VSBY NW-SE 1V3/ 8/051 4/013 56019  10029 20025 10 A.M. Weather: Overcast stratus  Temperature: 35F; Dew Point: 32F; Wind: SE at 13G25 kts Sea-level pressure: 29.53 ins. Hg, falling, then more quickly Visibility: 20 miles, distant fog all quadrants  BHO SA 1455 E59 OVC 20 000/35/32/1413G25/953/ DSNT FG ALQDS/  8/6// 58028  1 P.M. Weather: Overcast stratus Temperature: 39F; Dew Point: 35F; Wind: SSE at 13G21 kts, Sea-level pressure: 29.41 ins. Hg, falling, then unsteadily  Visibility: 30 miles, distant fog all quadrants  BHO SA 1755 E11 OVC 30 961/39/35/1513G21/941/ DSNT FG ALQDS/  8/6// 4/013 58039 10040 20029  SUMMARY FOR TUESDAY, FEBRUARY 14, 2017   TEMPERATURE (DEGREES F) MAX.....35   NORMAL.....37 MIN.....16   NORMAL.....19 MEAN....26   NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL.........................-2 TOTAL DEPARTURE FOR THE MONTH........................+11 [+0.6 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............39   DEPARTURE..........+2 TOTAL HEATING UNITS FOR THE MONTH.............525   DEPARTURE.........-12 TOTAL HEATING UNITS FOR THE SEASON...........3552   DEPARTURE........-516 TOTAL HEATING UNITS LAST SEASON TO DATE......3268   DIFFERENCE.......+284 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY...................23 NW  AT  2:20 A.M.   AERO........................24 NW  AT  2:20 A.M.                     ASOS........................25 NW  AT  2:20 A.M.                    DAVIS.......................23 NW  AT  2:04 A.M. RMY 24 FASTEST MILE FOR YESTERDAY.....................18 NW  AT  2:17 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................18 NW  AT  2:20 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................17 NW  AT  2:04 A.M. AVERAGE WIND SPEED AND DIRECTION.............10.1 NW                    ASOS......................10.3                    DAVIS......................9.1 NNW [296 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.14                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.29  DEPARTURE......+1.37                          ASOS................NA TOTAL PRECIPITATION FOR THE YEAR...........8.79  DEPARTURE......+2.52                          ASOS................NA SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5 TOTAL SNOWFALL FOR THE MONTH...............28.7  DEPARTURE......+21.8 TOTAL SNOWFALL FOR THE SEASON..............49.5  DEPARTURE.......+9.5 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 2/1   40/23/32/+6/0.03/0.4/.../..           43 W   AERO 44 W   RMY 47 2/2   38/25/32/+6/T/T/.../..                36 WNW AERO 37 WNW RMY 36 2/3   30/19/25/-1/0.00/0.0/.../..           28 WNW AERO 29 WNW RMY 31 2/4   31/15/23/-3/0.00/0.0/.../..           31 WNW AERO 30 WNW RMY N/A 2/5   43/22/33/+7/0.00/0.0/.../..           38 SSW AERO 41 SSW RMY N/A 2/6   37/28/33/+7/0.00/0.0/.../..           41 WNW AERO 41 WNW RMY 43 2/7   37/30/34/+7/0.54/0.7/.../..           32 ENE AERO 31 ENE RMY 32 2/8   49/25/37/+10/T/0.0/.../..             25 W   AERO 25 W   RMY 31 2/9   35/8/22/-5/1.60/16.9/.../..           54 NNE AERO 53 NNE RMY 54 2/10  24/7/16/-11/T/T/.../..                43 WNW AERO 50 WNW RMY 48 2/11  27/15/21/-6/0.14/2.9/.../..           21 SE  AERO 20 SE  RMY 19 2/12  32/17/25/-2/0.71/5.6/.../..           22 ENE AERO 28 ENE RMY N/A 2/13  32/20/26/-2/0.27/2.2/.../..           48 NW  AERO 60 NW  RMY 61 2/14  35/16/26/-2/0.00/0.0/.../..           23 NW  AERO 24 NW  RMY 24   2/15  Low temp since midnight is 25F; normal low is now 19F DAILY RECORDS FOR FEBRUARY 2017 2/09/17: NEW DAILY RECORD MAXIMUM SNOWFALL OF 16.9 INS.           PREVIOUS RECORD WAS 14.0 INS. SET IN 2015  DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 15 HIGH 60F IN 1954 LOW -18F IN 1943 PRECIP 1.28 INCHES IN 1950 SNOWFALL 14.4 INCHES IN 2015 PEAK GUST 94e MPH WNW IN 1946 RECORDS FOR FEBRUARY 16 HIGH 62F IN 1954 LOW -16F IN 1943 PRECIP 1.91 INCHES IN 1958 SNOWFALL 18.6 INCHES IN 1958 PEAK GUST 78 MPH W IN 1967 TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle and Kaitlin Geagan