BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, FEBRUARY 14, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME SUNNY AND BREEZY WITH GREAT VISIBILITY FOLLOWING SOME OVERNIGHT SNOWFALL.... We measured 0.1 inches of snow from passing showers last night. An excellent visibility  of 85 miles was seen at the 1 P.M. observation. Wind was strong and westerly today, with an  average speed exceeding 20 mph and a peak gust so far of 48 mph. Cloud cover this morning broke up before noontime, along with a distant haze that limited visibility to 35 miles at 7 A.M.  The high temperature so far today is 36F, the  same as our normal maximum temperature. The low  since midnight is 26F, 7 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 altocumulus Temperature: 27F; Dew Point: 16F; Wind: W at 15G23 kts Sea-level pressure: 29.85 ins. Hg, rising rapidly Visibility: 35 mile, distant haze 6-hr Max temp: 29F 6-hr Min temp: 26F 24-hr Precip: 0.02 ins. 24-hr snowfall: 0.1 ins Snow depth: 1 ins.  BHO SA 1155 90 SCT 35 107/27/16/2715G23/985/  DSNT HZ ALQDS/ 8/160 4/001 70002 51027 10029 20026   10 A.M. Weather: Broken cumulus Temperature: 31F; Dew Point: 15F; Wind: W at 20G38 kts, Peak wind: 44 MPH (38 kts) at 9:46 A.M. Sea-level pressure: 29.91 ins. Hg, rising steadily Visibility: 60 miles 3-hr Precip: 0.00 ins.  BHO SA 1455 E50 BKN 60 129/31/15/2820G38/991/  PK WND 2838/46/ 8/800 51022 1 P.M. Weather: Broken cumulus Temperature: 36F; Dew Point: 18F; Wind: W at 18G28 kts, Peak Wind: 37 MPH (32 kts) W at 11:43 A.M.  Sea-level pressure: 29.93 ins. Hg, rising steadily Visibility: 85 miles 6-hr Max temp: 36F 6-hr Min temp: 26F 6-hr Precip:  0.00 ins. 6-hr snowfall: 0.0 ins.  Snow depth: 1 in. BHO SA 1755 E50 BKN 85 136/36/18/2718G28/993/  PK WND 2732/1643/ 8/800 4/001 50007 10036 20026    SUMMARY FOR WEDNESDAY, FEBRUARY 13, 2019  TEMPERATURE (DEGREES F) MAX.....39   NORMAL.....36 MIN.....29   NORMAL.....19 MEAN....34   NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL........................+6 TOTAL DEPARTURE FOR THE MONTH.......................+59 [+4.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............31   DEPARTURE.........-6 TOTAL HEATING UNITS FOR THE MONTH.............440   DEPARTURE........-60 TOTAL HEATING UNITS FOR THE SEASON...........3936   DEPARTURE........-95 TOTAL HEATING UNITS LAST SEASON TO DATE......3776   DIFFERENCE......+160 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................36 W   AT  2:39 P.M.                    AERO.........................32 W   AT  2:38 P.M.                    ASOS.........................35 W   AT  2:41 P.M.                     DAVIS........................36 WNW AT  2:41 P.M. RMY 36 FASTEST MILE FOR YESTERDAY......................26 W   AT  2:41 P.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...................25 W   AT  2:41 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................27 W   AT  2:41 P.M. AVERAGE WIND SPEED AND DIRECTION..............13.3 W                    ASOS.......................13.1                    DAVIS......................13.6 NW [305 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.02  DEPARTURE.......-0.13                          ASOS..............0.02 TOTAL PRECIPITATION FOR THE MONTH..........1.93  DEPARTURE.......+0.15                          ASOS..............1.89 TOTAL PRECIPITATION FOR THE YEAR...........7.28  DEPARTURE.......+1.15                          ASOS..............7.37 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.1  DEPARTURE........-0.4 TOTAL SNOWFALL FOR THE MONTH................2.9  DEPARTURE........-3.5 TOTAL SNOWFALL FOR THE SEASON..............15.3  DEPARTURE.......-24.2 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 54/29/42/+15/0.37/0.0/386/72         53 W   AERO 53 W   RMY 54 01/02 34/24/29/+2/0.00/T/432/81            22 NW  AERO 22 NW  RMY N/A 01/03 42/28/35/+9/0.01/0.0/228/43          28 WNW AERO 30 WNW RMY 30 01/04 43/30/37/+11/0.00/0.0/354/66         29 SW  AERO 29 SW  RMY 29 01/05 41/32/37/+11/1.15/T/000/00           26 NE  AERO 25 NNW RMY 27 01/06 42/21/32/+6/0.00/T/300/56            42 NW  AERO 46 NW  RMY 50 01/07 26/14/20/-6/0.00/0.0/474/88 37 NW  AERO 41 NW  RMY N/A 01/08 40/24/32/+6/0.02/T/000/00            24 SSE AERO 23 SSE RMY N/A 01/09 42/31/37/+11/0.11/0.0/084/16         44 W   AERO 46 WNW RMY 45 01/10 32/20/26/+1/T/T/090/17               37 NW  AERO 41 NW  RMY 43 01/11 26/12/19/-6/0.00/0.0/366/68          36 WNW AERO 37 WNW RMY 38 01/12 26/9/18/-7/0.00/0.0/486/89           32 NW  AERO 32 NW  RMY 29 01/13 25/11/18/-7/0.00/0.0/456/84          18 NNW AERO 16 NW  RMY N/A 01/14 27/20/24/-1/0.00/0.0/120/22          20 NNE AERO 17 N   RMY N/A 01/15 34/18/26/1/0.00/0.0/402/73 22 NW  AERO 21 NNW RMY N/A 01/16 34/23/29/+4/0.00/0.0/270/47          33 W   AERO 32 W   RMY 35 01/17 27/13/20/-5/0.00/0.0/480/87          30 NNW AERO 28 NW  RMY N/A 01/18 40/21/31/+6/0.00/0.0/156/28          18 WNW AERO 18 WNW RMY N/A  01/19 31/24/28/+3/0.23/1.6/198/36          30 E   AERO 30 E   RMY N/A 01/20 33/3/18/-7/1.77/2.6/000/00           39 ENE AERO 43 ENE RMY 39 01/21 3/-2/1/-24/0.00/0.0/348/62           32*WNW AERO 41 WNW RMY M 01/22 24/0/12/-13/0.00/0.0/522/93          28 NW  AERO 30 NW  RMY 29 01/23 46/15/31/+6/0.00/0.0/000/00          37 SSW AERO 39 SSW RMY N/A 01/24 57/31/44/+19/1.44/0.0/000/00         77 S   AERO 79 S   RMY N/A 01/25 37/23/30/+5/0.00/0.0/378/66          41 WNW AERO 46 WNW RMY N/A 01/26 33/17/25/0/0.00/0.0/534/94           25 W   AERO 25 W   RMY 27         01/27 44/24/34/+9/0.00/0.0/480/84          39 S   AERO 39 S   RMY 41 01/28 30/19/28/+3/0.00/0.0/348/60          28 NW  AERO 28 NW  RMY N/A 01/29 32/19/26/+1/0.06/T/072/13            22 SE  AERO 21 E   RMY N/A 01/30 36/3/20/-6/0.19/0.5/504/88           52 W   AERO 53 W   RMY 57  01/31 14/-2/6/-20/0.00/0.0/570/99          33 WNW AERO 35 WNW RMY N/A *Official gust chart reading low 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 Low temp since midnight is 26F; normal low is 19F   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 14 HIGH 56F IN 1949 LOW -14F IN 2016 PRECIP 2.09 INCHES IN 2007 SNOWFALL 11.0 INCHES IN 1914 PEAK GUST 83 MPH SSW IN 2000 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 TODAY'S REPORT PREPARED BY: Benjamin Turner