BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, MARCH 26, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0537E SUNSET:  1804E DENSE FOG RETURNS AND HANGS AROUND.... A low ceiling at around 400 feet created very dense fog atop the hill this morning. Visibility was just 1/16th of a mile at 7 AM. Not much rainfall was squeezed out of this saturated air - only 0.01 inches was left overnight in the gauge.  As the morning progressed, we saw visibility improve for a time to 2 miles. However, most of the observing day has been around 1/8th of a mile with the summit shrouded in low clouds.  Winds have been picking up out of the south gusting to 38 MPH so far. A Wind Advisory is up for our region from 3 PM today to 4 AM tomorrow. The drought monitor was updated yesterday. Our spring precipitation deficit has left us and much of MA in abnormally dry conditions. While this is not much cause for alarm, it does mean elevated fire risk on windy, dry days. Computer models are indicating, however, a chance of a good soaking rain on Sunday. While not ideal to have this over the weekend of course, it will make a beneficial impact on vegetation and reservoirs, and will calm the fire danger. The high so far today is 58F, which is 10 degrees above the normal high of 48F. The low since midnight is 50F, which is 20 degrees above the daily normal low of 30F. Today's Observations: 7 A.M. Weather: Fog (sky obscured, vertical visibility 100 ft) Temperature: 54F; Dew Point: 54F; Relative Humidity: 100% Wind: S @ 13G25 kts Sea-level pressure: 29.80 in Hg; falling unsteadily Visibility: 1/16 mile, fog 6-hr Max temp: 54F 6-hr Min temp: 50F 24-hr Precip: 0.01 ins. 24-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1155 X W1 1/16F 091/54/54/1913G25/980/ 8//// 57029 70001 10054 20050 10 A.M. Weather: Fog (sky obscured, vertical visibility 200 ft) Temperature: 57F; Dew Point: 57F; Relative Humidity: 100% Wind: S @ 16G25 kts Peak Wind: 31 MPH (27 knots), South @ 9:03 A.M. Sea-level pressure: 29.71 in Hg; falling, then falling more rapidly Visibility: 1/8 mile, fog 3-hr Precip: 0.00 ins 3-hr Snow: 0.0 ins. BHO SA 1455 X W2 1/8F 062/57/57/1916G25/971/ PK WND 1927/03/ 8//// 58029 1 P.M. Weather: Fog (sky obscured, vertical visibility 200 ft) Temperature: 58F, Dew point: 58F; Relative Humidity: 100% Wind: S @ 19G29 its Peak Wind: 38 MPH (33 knots), South @ 10:38 A.M. Sea-level pressure: 29.59 in Hg; falling, then falling more rapidly (PRESFR = Pressure falling rapidly) Visibility: 1/8 miles, fog 6-hr Max temp: 58F 6-hr Min temp: 54F 6-hr Precip: 0.00 ins. 6-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1755 X W2 1/8F 021/58/58/1919G29/959/ PK WND 1933/1538 PRESFR/ 8//// 58041 10058 20054 SUMMARY FOR THURSDAY, MARCH 25, 2021 TEMPERATURE (DEGREES F) MAX.......67     NORMAL.....47 MIN.......49     NORMAL.....30 MEAN......58     NORMAL.....38 DEPARTURE FROM 30-YEAR (1981-2010) NORMAL....... +20 TOTAL DEPARTURE FOR THE MONTH................... +78 [+2.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY................7  DEPARTURE......-20 TOTAL HEATING UNITS FOR THE MONTH..............685  DEPARTURE......-78 TOTAL HEATING UNITS FOR THE SEASON............4730  DEPARTURE.....-601 TOTAL HEATING UNITS LAST SEASON TO DATE.......4733  DEPARTURE.......-3 PEAK WIND GUST (MPH):                      420C/Official..............25 S   @ 11:42 P.M.                      AEROVANE (south tower).....26 S   @ 11:43 P.M.                      ASOS.......................25 S   @ 11:44 P.M.                      DAVIS #1...................26 S   @ 12:13 A.M.                      DAVIS #2 (south tower).....27 SSE @  1:27 A.M.                      RMY........................26     @ 11:42 P.M.                      VECTOR.....................25 S   @ 11:23 P.M.                      MERLIN.....................M FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................19 S   @ 11:46 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................20 S   @ 11:45 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............19 SSE @ 12:20 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............19 S   @ 11:45 P.M. MAXIMUM 2-MINUTE RMY AVERAGE....................20 SSW @ 11:42 P.M. MAXIMUM 2-MINUTE VECTOR AVERAGE.................19     @ 11:42 P.M. AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL.......9.5 S [227 total miles]                      ASOS......................9.6                        DAVIS #1..................9.4 S                        DAVIS #2.................10.2 S                      RMY.......................9.7 S                      VECTOR...................10.0 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.01  DEPARTURE....-0.18                              ASOS.............0.00 TOTAL PRECIPITATION FOR THE MONTH.............1.06  DEPARTURE....-3.42                              ASOS.............1.09 TOTAL PRECIPITATION FOR THE YEAR..............9.06  DEPARTURE....-3.84                               ASOS............9.35 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....-10.8 TOTAL SNOWFALL FOR THE SEASON.................72.6  DEPARTURE....+15.1 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   65/38/52/+14/0.00/0.0/.../..     22 ESE  AERO 18 SE   RMY 21 03/24   63/44/54/+16/..../0.0/.../..     22 SSE  AERO 21 SSE  RMY 21 03/25   67/49/58/+20/0.11/0.0/.../..     25 S    AERO 26 S    RMY 26 03/26 The low since midnight is 50F, the daily normal low is 30F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR MARCH 26 HIGH 76 IN 1922, 1949 LOW 6 IN 1960 PRECIP 1.99 INS. IN 1988 SNOWFALL 5.4 INS. IN 2001 PEAK GUST 63 MPH S IN 1970 RECORDS FOR MARCH 27 HIGH 78 IN 1998 LOW 12 IN 1975 PRECIP 1.05 INS. IN 1913 SNOWFALL 6.6 INS. IN 1959 PEAK GUST 62 MPH NW IN 1965, SE IN 1992 TODAY'S REPORT PREPARED BY: Andrew Swanson