BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, MARCH 24, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0543E SUNSET:  1801E MILD AND DRY ATOP GREAT BLUE HILL.... We observed fog this morning, but it dissipated very quickly before the 7 A.M. observation. Visibility was decent today at 65 miles on average, but it was slightly obscured by a smoke layer. Mild weather in the region continues to exist despite overcast skies, since there was a warm breeze from the southeast.   Dry conditions continue to be an issue, so a fire risk persists. The wind is calmer today, with a max gust of around 17 mph. The monthly precipitation departure stands at -3.16" and the yearly departure is -3.58". The high so far today is 62F, which is 15 degrees above the normal high of 47F. The low since midnight is 44F, which is 15 degrees above the daily normal low of 29F. Today's Observations: 7 A.M. Weather: Overcast cirrostratus Temperature: 45F; Dew Point: 44F; Relative Humidity: 95% Wind: SE @ 7 kts Sea-level pressure: 30.26 in Hg; rising then falling Visibility: 65 miles, thin fog 6-hr Max temp: 46F 6-hr Min temp: 44F 24-hr Precip: 0.00 ins. 24-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1155 250 OVC 65 246/45/44/1407/026/ THN F ALQDS/ 8/008 50000 10046 20044 10 A.M. Weather: Overcast cirrostratus Temperature: 54F; Dew Point: 40F; Relative Humidity: 58% Wind: SE @ 7 kts Sea-level pressure: 30.29 in Hg; rising, then steady Visibility: 60 miles, thin smoke layer 3-hr Precip: 0.00 ins 3-hr Snow: 0.0 ins. BHO SA 1455 250 OVC 60 256/54/40/1307/029/ THN K LYR ALQDS SUN DMLY VSBL/ 8/008 51010 1 P.M. Weather: Overcast altocumulus and altostratus Temperature: 61F, Dew point: 35F; Relative Humidity: 37% Wind: SE @ 7G15 kts Sea-level pressure: 30.23 in Hg; falling steadily Visibility: 65 miles 6-hr Max temp: 62F 6-hr Min temp: 45F 6-hr Precip: 0.00 ins. 6-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1755 180 OVC 65 237/61/35/1407G15/023/ SUN DMLY VSBL/ 8/07/ 56019 10062 20045 SUMMARY FOR TUESDAY, MARCH 23, 2021 TEMPERATURE (DEGREES F) MAX.......65     NORMAL.....46 MIN.......38     NORMAL.....29 MEAN......52     NORMAL.....38 DEPARTURE FROM 30-YEAR (1981-2010) NORMAL....... +14 TOTAL DEPARTURE FOR THE MONTH................... +42 [+1.6 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............13  DEPARTURE......-14 TOTAL HEATING UNITS FOR THE MONTH..............667  DEPARTURE......-43 TOTAL HEATING UNITS FOR THE SEASON............4712  DEPARTURE.....-565 TOTAL HEATING UNITS LAST SEASON TO DATE.......4682  DEPARTURE......+30 PEAK WIND GUST (MPH):                      420C/Official..............22 ESE @  5:14 P.M.                      AEROVANE (south tower).....18 SE  @  6:00 P.M.                      ASOS.......................21 ESE @  5:35 P.M.                      DAVIS #1...................22 S   @  7:24 P.M.                      DAVIS #2 (south tower).....22 S   @  7:24 P.M.                      RMY........................21     @  5:36 P.M.                      VECTOR.....................23     @  5:34 P.M.                      MERLIN.....................20 FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................16 S   @  5:14 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................15 S   @  7:47 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............18 S   @  7:43 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............18 S   @  7:43 P.M. MAXIMUM 2-MINUTE RMY AVERAGE....................15 SE  @  5:30 P.M. MAXIMUM 2-MINUTE VECTOR AVERAGE.................15     @  5:34 P.M. AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL.......7.5 S [180 total miles]                      ASOS......................8.0                        DAVIS #1..................8.3 S                        DAVIS #2..................8.3 S                      RMY.......................8.6 S                      VECTOR....................8.2 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.00  DEPARTURE....-0.20                              ASOS.............0.00 TOTAL PRECIPITATION FOR THE MONTH.............0.94  DEPARTURE....-3.16                              ASOS.............0.98 TOTAL PRECIPITATION FOR THE YEAR..............8.94  DEPARTURE....-3.58                               ASOS............9.24 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HOURS ENDING 7 A.M.......... 0.0  DEPARTURE.... -0.4 TOTAL SNOWFALL FOR THE MONTH.................. 0.2  DEPARTURE....-10.2 TOTAL SNOWFALL FOR THE SEASON.................72.6  DEPARTURE....+15.7 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   42/24/33/+2/0.13/T/020/03        69 WNW  AERO 78 WNW  RMY 78 03/02   27/10/19/-12/T/0.1/679/100       63 WNW  AERO 71 WNW  RMY 69 03/03   45/19/32/0/0.00/0.0/375/55       30 W    AERO 30 W    RMY 34 03/04   38/22/30/-2/0.00/0.0/520/76      46 NW   AERO 51 NW   RMY 53 03/05   31/18/25/-7/0.00/0.0/549/80      39 WNW  AERO 44 NW   RMY 45 03/06   33/15/24/-8/0.00/0.0/675/98      28 WNW  AERO 29 WNW  RMY 30 03/07   35/15/25/-8/0.00/0.0/686/99      21 NW   AERO 22 NW   RMY 23 03/08   38/19/29/-4/T/T/389/56           20 NW   AERO 20 NW   RMY 21 03/09   56/30/43/+10/T/T/.../..          32 WNW  AERO 35 WNW  RMY 37 03/10   54/32/43/+10/0.00/0.0/.../..     29 SSW  AERO 29 SSW  RMY 31 03/11   71/35/53/+19/0.00/0.0/.../..     41 SSW  AERO 43 SSW  RMY 46 03/12   62/42/52/+18/0.00/0.0/.../..     52 WNW  AERO 59 WNW  RMY 57 03/13   46/27/37/+3/0.00/0.0/.../..      53 WNW  AERO 59 WNW  RMY 57 03/14   45/19/32/-3/0.01/0.1/.../..      51 WNW  AERO 58 NW   RMY 58 03/15   27/12/20/-15/0.00/0.0/.../..     48 NW   AERO 47 NW   RMY 54 03/16   37/13/25/-10/0.00/0.0/.../..     22 NNW  AERO 22 NNW  RMY 23 03/17   52/27/40/+4/0.00/0.0/.../..      28 S    AERO 25 S    RMY 29 03/18   46/34/40/+4/0.80/T/.../..        38 NE   AERO 40 NE   RMY 42 03/19   39/26/33/-3/T/T/.../..           37 N    AERO 38 N    RMY 41 03/20   58/24/41/+4/0.00/0.0/.../..      23 W    AERO 23 W    RMY 27 03/21   62/39/51/+14/0.00/0.0/.../..     22 S    AERO 23 S    RMY 25 03/22   62/36/49/+12/0.00/0.0/.../..     21 S    AERO 18 S    RMY 22 03/23   65/38/52/+14/0.00/0.0/.../..     22 ESE  AERO 18 SE   RMY 21 03/24 The low since midnight is 44F, the daily normal low is 29F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR MARCH 24 HIGH 70 IN 1920 LOW 6 IN 1906 PRECIP 1.51 INS. IN 1956 SNOWFALL 12.3 INS. IN 1956 PEAK GUST 71 MPH W IN 1968 RECORDS FOR MARCH 25 HIGH 76 IN 1910 LOW 8 IN 1888, 1956 PRECIP 1.84 INS. IN 1909 SNOWFALL 1.8 INS. IN 2018 PEAK GUST 69 MPH SE IN 1969 TODAY'S REPORT PREPARED BY: Benjamin Turner