BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, FEBRUARY 15, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME OVERCAST AND MILD WITH LIGHT RAINFALL LATER ON.... Light rain began following the 10 A.M.  observation, leaving 0.03 inches in the gauge by the 1 P.M. observation. This is in conjunction with a pressure drop of  more than 6 millibars since 7 A.M. Wind has shifted from southeast to south as  the day went on, with a peak gust of  39 mph so far today. The high temperature  so far today is 47F, 10 degrees above our  normal maximum temperature of 37F. The low  since midnight is 29F, 10 degrees above the  daily normal low of 19F. PRELIMINARY STATS FOR JANUARY 2019 TEMPERATURE, Deg. F Avg. Max. 34.3 [+0.5] Avg. Min. 17.9 [+0.8] Mean      26.1 [+0.6] 24-hour corrected mean: 26.7 Max. for month: 57F on  24th Min. for month: -2F on the 21st and 31st HEATING DEGREE DAYS Total heating units:   1200 [-26] Total for the season:  3495 [-36] Total for last season: 3321 PRECIPITATION, Inches Total: 5.35 [+1.00] Greatest in 24 hrs: 2 inches on the 19th-20th SNOWFALL, Inches Total: 4.7 [-12.4] Greatest in 24 hrs: 4.2 inches on the 19th-20th  WIND, mph Avg. uncorrected wind speed: 13.4 Avg. corrected wind speed: 13.7 Prevailing wind direction: NW at 19% Peak gust and direction: 77 S on 24th   SUNSHINE: Campbell-Stokes card minutes: 8988 minutes of possible 17130 or 52% Astronomical total minutes:   9273 minutes of possible 17650 or 53% BHO Coldest January Daily Maximum Temperature, deg F (1885-2019): 1) -1 on January 28, 1888 2) 1 on January 12, 1886 3) 2 on January 8, 1968 4) 3 on January 6, 1896    3 on January 4, 1904    3 on January 21, 2019 7) 4 on January 17, 1907    4 on January 24, 1907    4 on January 16, 1994 Today's Observations: 7 A.M. Weather: Scattered stratus fractus, overcast altostratus Temperature: 32F; Dew Point: 28F; Wind: SE at 14G22 kts Sea-level pressure: 29.97 ins. Hg, falling rapidly Visibility: 40 miles 6-hr Max temp: 32F 6-hr Min temp: 29F 24-hr Precip: 0.00 ins. 24-hr snowfall: 0.0 ins Snow depth: 1 ins.  BHO SA 1155 40 SCT E140 OVC 40 148/32/28/1418G22/997/  8/72/ 4/001 56027 10032 20029   10 A.M. Weather: Overcast nimbostratus, few stratus fractus Temperature: 42F; Dew Point: 36F; Wind: SSE at 16G28 kts, Peak wind: 32 MPH (28 kts) at 9:52 A.M. Sea-level pressure: 29.91 ins. Hg, falling rapidly Visibility: 30 miles, distant fog 3-hr Precip: 0.00 ins.  BHO SA 1455 E65 OVC 30 127/42/36/1516G28/991/  FEW STFA DSNT FG ALQDS PK WND 1528/52/ 8/72/ 58021  1 P.M. Weather: Overcast nimbostratus, few stratus fractus, light rain Temperature: 45F; Dew Point: 45F; Wind: S at 16G26 kts, Peak Wind: 32 MPH (28 kts) S at 11:26 A.M.  Sea-level pressure: 29.78 ins. Hg, falling rapidly Visibility: 20 miles, distant fog 6-hr Max temp: 47F 6-hr Min temp: 32F 6-hr Precip:  0.03 ins. 6-hr snowfall: 0.0 ins.  Snow depth: 1 in. BHO SA 1755 E65 OVC 20R- 083/45/45/1716G26/978/  FEW STFA DSNT FG ALQDS R-CTD PK WND 1728/1626/  8/72/ 4/001 6003/ 58044 10047 20032    SUMMARY FOR THURSDAY, FEBRUARY 14, 2019  TEMPERATURE (DEGREES F) MAX.....37   NORMAL.....36 MIN.....26   NORMAL.....19 MEAN....32   NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL........................+4 TOTAL DEPARTURE FOR THE MONTH.......................+63 [+4.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............33   DEPARTURE.........-4 TOTAL HEATING UNITS FOR THE MONTH.............473   DEPARTURE........-64 TOTAL HEATING UNITS FOR THE SEASON...........3969   DEPARTURE........-99 TOTAL HEATING UNITS LAST SEASON TO DATE......3805   DIFFERENCE......+164 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................44 WNW AT  9:46 A.M.                    AERO.........................41 WNW AT  9:47 A.M.                    ASOS.........................47 W   AT  9:48 A.M.                     DAVIS........................50 W   AT  9:47 A.M. RMY 45 FASTEST MILE FOR YESTERDAY......................35 WNW AT  9:49 A.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...................33 W   AT  9:49 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................37 W   AT  9:49 A.M. AVERAGE WIND SPEED AND DIRECTION..............14.5 W                    ASOS.......................13.9                    DAVIS......................14.9 W [277 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..........1.93  DEPARTURE.......+0.01                          ASOS..............1.89 TOTAL PRECIPITATION FOR THE YEAR...........7.28  DEPARTURE.......+1.01                          ASOS..............7.37 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE........-0.5 TOTAL SNOWFALL FOR THE MONTH................2.9  DEPARTURE........-4.0 TOTAL SNOWFALL FOR THE SEASON..............15.3  DEPARTURE.......-24.7 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 19/5/12/-14/0.00/0.0/552/95          29 W   AERO 28 W   RMY N/A 02/02 30/7/19/-7/0.00/0.0/318/55           32 WSW AERO 32 WSW RMY 31 02/03 38/27/26/+7/0.00/0.0/126/22          26 S   AERO 25 S   RMY N/A 02/04 59/33/46/+20/0.00/0.0/540/93         25 SSW AERO 28 SSW RMY N/A 02/05 62/39/51/+25/0.00/0.0/354/60         30 WNW AERO 29 WNW RMY 32 02/06 39/28/34/+8/..../.../396/67          24 NNW AERO 23 NNW RMY N/A 02/07 37/31/34/+7/..../.../.../.. 28 ENE AERO 24 ENE RMY 28 02/08 51/27/39/+12/..../.../.../..         46 W   AERO 46 WNW RMY 51 02/09 32/20/26/-1/0.00/0.0/.../..          50 WNW AERO 52 WNW RMY 52 02/10 33/18/26/-1/0.00/0.0/.../..          24 WNW AERO 23 WNW RMY 25 02/11 34/21/28/+1/0.00/0.0/.../..          24 NNW AERO 23 NNW RMY 25 02/12 33/13/23/-4/..../2.8/.../..          32 E   AERO 30 E   RMY 26 02/13 39/29/34/+6/..../0.1/.../..          36 W   AERO 32 W   RMY 36 02/14 37/26/32/+4/0.00/0.0/.../..          44 WNW AERO 42 WNW RMY 45 02/15 Low temp since midnight is 29F; normal low is 19F   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: Benjamin Turner