BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, MARCH 8, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME WARMER THAN YESTERDAY WITH LESS VISIBILITY; AND SKIES BECOMING OVERCAST IN THE AFTERNOON.... We observed an average visibility of 60 miles throughout the day, with it dropping slightly to 50 miles at the 1 P.M. observation. Conditions were clear from 7 A.M. to 10 A.M., with skies  gradually becoming overcast with a translucent  cirrostratus layer in the afternoon. Temperatures  today moved closer to normal, but still remained  below normal. The high temperature so far today  is 33F, 9 degrees below the daily normal maximum  of 42F. The low since midnight is 11F, 13 degrees  below the normal minimum of 24F.   PRELIMINARY STATS FOR FEBRUARY 2019 TEMPERATURE, Deg. F Avg. Max. 37.3 [+0.5] Avg. Min. 21.6 [+2.5] Mean      29.5 [+1.6] 24-hour corrected mean: 29.2 Max. for month: 62F on the 5th Min. for month: 5F  on the 1st HEATING DEGREE DAYS Total heating units:    990 [-47] Total for the season:  4486 [-82] Total for last season: 4122 PRECIPITATION, Inches Total: 3.61 [-0.46] Greatest in 24 hrs: 1.14 ins. on the 12th-13th SNOWFALL, Inches Total: 12.1 [-1.8] Greatest in 24 hrs: 4.7 ins. on the 17th-18th  WIND, mph Avg. uncorrected wind speed: 12.9 Avg. corrected wind speed: 13.3 Prevailing wind direction: WNW at 22% Peak gust and direction: 66 W on 25th   SUNSHINE: Campbell-Stokes card minutes: 9132 minutes of possible 17148 or 53% Astronomical total minutes:   9476 minutes of possible 17766 or 53% Today's Observations: 7 A.M. Weather: Clear, few distant cirrostratus Temperature: 14F; Dew Point: 1F; Wind: SSW at 11G15 kts Sea-level pressure: 30.39 ins. Hg, rising steadily Visibility: 60 miles, thin smoke layer in all directions 6-hr Max temp: 14F 6-hr Min temp: 11F 24-hr Precip:  0.00 ins. 24-hr snowfall: 0.0 ins. Snow depth: 11 ins.  BHO SA 1155 CLR 60 290/14/1/2511G15/039/ FEW CS THN  K LYR ALQDS/ 8/005 4/011 51009 10014 20011   10 A.M. Weather: Clear, few distant cirrostratus Temperature: 24F; Dew Point: 7F; Wind: SW at 11G15 kts   Sea-level pressure: 30.38 ins. Hg, falling steadily  Visibility: 50 miles, distant haze 3-hr Precip: 0.00 ins.  BHO SA 1455 CLR 50 288/24/7/2411G15/038/ FEW CS DSNT  HZ ALQDS/ 8/005 58002  1 P.M. Weather: Broken cirrostratus   Temperature: 32F; Dew Point: 9F; Wind: SW at 12G18 kts   Sea-level pressure: 30.31 ins. Hg, falling steadily Visibility: 50 miles, distant haze 6-hr Max temp: 33F 6-hr Min temp: 14F 6-hr Precip:  0.00 ins. 6-hr snowfall: 0.0 ins. Snow depth: 11 ins.  BHO SA 1755 E250 BKN 50 264/32/9/2412G18/031/ DSNT HZ ALQDS/  8/007 4/011 58024 10033 20014 SUMMARY FOR THURSDAY, MARCH 7, 2019  TEMPERATURE (DEGREES F) MAX.....26   NORMAL.....42 MIN......6   NORMAL.....24 MEAN....16   NORMAL.....33 DEPARTURE FROM 30-YEAR NORMAL........................-17 TOTAL DEPARTURE FOR THE MONTH........................-53 [-7.8 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............49   DEPARTURE........+17 TOTAL HEATING UNITS FOR THE MONTH.............285   DEPARTURE........+53 TOTAL HEATING UNITS FOR THE SEASON...........4771   DEPARTURE........-29 TOTAL HEATING UNITS LAST SEASON TO DATE......4319   DIFFERENCE......+452 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................35 W   AT  3:34 P.M.                    AERO.........................18 W   AT 12:17 P.M.                    ASOS.........................33 W   AT  3:35 P.M.                     DAVIS........................35 W   AT 12:19 P.M. RMY 34 FASTEST MILE FOR YESTERDAY......................26 W   AT  3:32 P.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...................24 W   AT  3:32 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................26 SW  AT  3:32 P.M. AVERAGE WIND SPEED AND DIRECTION..............13.6 W                    ASOS.......................14.0                    DAVIS......................14.1 WSW [250 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.......-0.17                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.32  DEPARTURE.......+1.11                          ASOS..............2.35 TOTAL PRECIPITATION FOR THE YEAR..........11.26  DEPARTURE.......+1.63                          ASOS.............11.40 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE........-0.5 TOTAL SNOWFALL FOR THE MONTH...............20.0  DEPARTURE.......+16.4 TOTAL SNOWFALL FOR THE SEASON..............44.5  DEPARTURE........-6.1 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 38/27/33/+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/+8/0.35/T/396/67            24 NNW AERO 23 NNW RMY N/A 02/07 37/31/34/+7/0.35/0.0/000/00          28 ENE AERO 24 ENE RMY 28 02/08 51/27/39/+12/0.07/0.0/204/34         46 W   AERO 46 WNW RMY 51 02/09 32/20/26/-1/0.00/0.0/594/100         50 WNW AERO 52 WNW RMY 52 02/10 33/18/26/-1/0.00/0.0/510/85          24 WNW AERO 23 WNW RMY 25 02/11 34/21/28/+1/0.00/0.0/318/53          24 NNW AERO 23 NNW RMY 25 02/12 33/13/23/-4/0.90/2.8/000/00          32 E   AERO 30 E   RMY 26 02/13 39/29/34/+6/0.26/0.1/018/03          36 W   AERO 32 W   RMY 36 02/14 37/26/32/+4/0.00/0.0/594/97          44 WNW AERO 42 WNW RMY 45 02/15 49/29/39/+11/0.11/0.0/060/10         40 S   AERO 40 S   RMY 44 02/16 44/26/35/+7/0.00/0.0/504/82          25 NW  AERO 25 NW  RMY N/A 02/17 37/19/28/0/0.01/T/618/100            30 NNW AERO 25 NNW RMY N/A 02/18 30/16/23/-6/0.41/4.7/000/00          35 NW  AERO 36 NW  RMY 41 02/19 30/10/20/-9/0.00/0.0/618/99          35 NW  AERO 33 NW  RMY N/A 02/20 26/12/19/-10/0.12/0.3/000/00         16 WNW AERO 14 SSW RMY N/A 02/21 43/21/32/+3/0.33/0.7/294/47          36 W   AERO 33 W   RMY 38 02/22 43/30/37/+8/0.00/0.0/504/80          22 NW  AERO 21 NW  RMY 23 02/23 38/24/31/+1/0.00/0.0/336/53          18 NNW AERO 16 NNW RMY N/A 02/24 45/30/38/+8/0.40/0.0/000/00          41 W   AERO 37 W   RMY 47 02/25 37/25/31/+1/0.03/T/336/57            66 W   AERO 59 W   RMY M  02/26 29/14/22/-8/0.00/0.0/642/100         46 WNW AERO 39 WNW RMY 47 02/27 22/9/16/-15/0.10/1.2/180/28          35 WNW AERO 26 WNW RMY N/A 02/28 28/15/22/-9/0.17/2.3/486/75          22 NW  AERO 18 NW  RMY 22 PRELIMINARY CLIMATE SUMMARY FOR MARCH 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 03/01 38/17/28/-3/..../.../.../..           16 NNW AERO 13 NNW RMY 22 03/02 31/27/29/-2/..../.../.../.. 29 NNE AERO 22 NNE RMY 30 03/03 40/25/33/+1/..../.../.../..           21 ESE AERO 14 ESE RMY N/A 03/04 35/18/27/-5/..../.../.../..           33 W   AERO 18 W   RMY 32 03/05 29/10/20/-12/0.00/0.0/.../..          28 WNW AERO 12 SW  RMY N/A 03/06 24/10/17/-15/0.00/0.0/.../..          40 WNW AERO 25 WNW RMY 41 03/07 26/6/16/-17/0.00/0.0/.../..           35 W   AERO 18 W   RMY 34 03/08 Low temp since midnight is 11F; normal low is 24F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MARCH 8 HIGH 66 IN 2012 LOW 2 IN 1986 PRECIP 2.20 INS. IN 2008 SNOWFALL 18.0 INS. IN 2013 PEAK GUST 69 MPH SSW IN 2008 RECORDS FOR MARCH 9 HIGH 75 IN 2016 LOW 1 IN 2007 PRECIP 2.67 INS. IN 1998 SNOWFALL 6.3 INS. IN 2013 PEAK GUST 102e MPH S IN 1942 [RECORD FOR MONTH] TODAY'S REPORT PREPARED BY: Benjamin Turner