BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, MARCH 23, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0544E SUNSET:  1800E A NICE DAY AFTER SOME MORNING FOG.... We observed fog this morning that brought visibility down to only a mile. It broke up around 9 A.M., and we saw 70 miles of visibility for the rest of the day. Mild weather in the region continues to exist despite partly cloudy skies.   Dry conditions continue to be an issue, so a fire risk persists. The wind is calmer today, with a max gust of around 20 mph. The monthly precipitation departure stands at -2.96" and the yearly departure is -3.38". The high so far today is 64F, which is 18 degrees above the normal high of 46F. The low since midnight is 38F, which is 9 degrees above the daily normal low of 29F. Today's Observations: 7 A.M. Weather: Overcast stratus Temperature: 44F; Dew Point: 43F; Relative Humidity: 98% Wind: WNW @ 4 kts, light and variable Sea-level pressure: 30.33 in Hg; rising steadily Visibility: 1 mile, fog 6-hr Max temp: 44F 6-hr Min temp: 38F 24-hr Precip: 0.00 ins. 24-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1155 10 OVC 1F 271/44/43/3004/033/ WND L/V/ 8/6// 53008 10044 20038 10 A.M. Weather: Scattered cirrus Temperature: 57F; Dew Point: 41F; Relative Humidity: 55% Wind: SW @ 4 kts, light and variable Sea-level pressure: 30.34 in Hg; rising, then steady Visibility: 70 miles, thin smoke layer N-NE 3-hr Precip: 0.00 ins 3-hr Snow: 0.0 ins. BHO SA 1455 250 SCT 70 276/57/41/2504/034/ THN K LYR N-NE WND L/V/ 8/002 51005 1 P.M. Weather: Scattered cumulus, broken cirrostratus Temperature: 63F, Dew point: 42F; Relative Humidity: 45% Wind: WSW @ 4 kts, light and variable Sea-level pressure: 30.31 in Hg; falling steadily Visibility: 70 miles, thin smoke layer N-NE 6-hr Max temp: 64F 6-hr Min temp: 44F 6-hr Precip: 0.00 ins. 6-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1755 40 SCT 250 BKN 70 261/63/42/2504/031/ THN K LYR N-NE WND L/V/ 8/108 58015 10064 20044 SUMMARY FOR MONDAY, MARCH 22, 2021 TEMPERATURE (DEGREES F) MAX.......62     NORMAL.....46 MIN.......36     NORMAL.....28 MEAN......49     NORMAL.....37 DEPARTURE FROM 30-YEAR (1981-2010) NORMAL....... +12 TOTAL DEPARTURE FOR THE MONTH................... +28 [+1.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............16  DEPARTURE......-12 TOTAL HEATING UNITS FOR THE MONTH..............654  DEPARTURE......-28 TOTAL HEATING UNITS FOR THE SEASON............4699  DEPARTURE.....-551 TOTAL HEATING UNITS LAST SEASON TO DATE.......4650  DEPARTURE......+49 PEAK WIND GUST (MPH):                      420C/Official..............21 S   @  7:22 P.M.                      AEROVANE (south tower).....18 S   @  7:21 P.M.                      ASOS.......................21 S   @  7:21 P.M.                      DAVIS #1...................21 S   @  7:24 P.M.                      DAVIS #2 (south tower).....23 SSE @  8:17 P.M.                      RMY........................22     @  7:21 P.M.                      VECTOR.....................22     @  7:22 P.M.                      MERLIN.....................21 FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................15 S   @  7:13 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................15 S   @  8:46 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............15 S   @  7:30 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............17 S   @  7:13 P.M. MAXIMUM 2-MINUTE RMY AVERAGE....................15 S   @  8:45 P.M. MAXIMUM 2-MINUTE VECTOR AVERAGE.................15     @  8:45 P.M. AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL.......9.1 S [219 total miles]                      ASOS......................9.6                        DAVIS #1..................9.0 SSW                        DAVIS #2..................9.4 SSW                      RMY.......................9.3 SSW                      VECTOR....................9.7 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.00  DEPARTURE....-0.19                              ASOS.............0.00 TOTAL PRECIPITATION FOR THE MONTH.............0.94  DEPARTURE....-2.96                              ASOS.............0.98 TOTAL PRECIPITATION FOR THE YEAR..............8.94  DEPARTURE....-3.38                               ASOS............9.24 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HOURS ENDING 7 A.M.......... 0.0  DEPARTURE.... -0.3 TOTAL SNOWFALL FOR THE MONTH.................. 0.2  DEPARTURE.... -9.8 TOTAL SNOWFALL FOR THE SEASON.................72.6  DEPARTURE....+16.1 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 The low since midnight is 38F, 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 23 HIGH 78 IN 1938 LOW 3 IN 1934 PRE 2.52 INS. IN 2010 SNOW 3.0 INS. IN 1977 WIND 78e MPH W IN 1940 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 TODAY'S REPORT PREPARED BY: Benjamin Turner