BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, MARCH 28, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0535E SUNSET: 1806E OVERCAST WITH INCREASING WIND AND RAIN IN THE AFTERNOON HOURS.... Today we observed overcast skies with a growing fog, until rain began between 11 A.M. and noon. The rain left 0.11 inches in the gauge by 1 P.M. and it continuing to increase in intensity. Pressure took an 11 mb dive since this morning, signaling oncoming unfavorable weather. The drought monitor was updated last Thursday. 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. -Drought monitor section by Andrew Swanson The high so far today is 48F, which is the same as the normal high. The low since midnight is 37F, which is 7 degrees above the daily normal low of 30F. Today's Observations: 7 A.M. Weather: Overcast stratus Temperature: 40F; Dew Point: 37F; Relative Humidity: 88% Wind: SE @ 9 kts Sea-level pressure: 30.15 in Hg; rising then falling Visibility: 25 miles, thin fog 6-hr Max temp: 40F 6-hr Min temp: 37F 24-hr Precip: 0.00 ins. 24-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1155 10 OVC 25 211/40/37/1309/015/ THN F ALQDS/ 8/6// 50002 10040 20037 10 A.M. Weather: Overcast stratus Temperature: 44F; Dew Point: 42F; Relative Humidity: 93% Wind: SE @ 10G16 kts Sea-level pressure: 30.03 in Hg; falling, then more rapidly Visibility: 15 miles, thin fog 3-hr Precip: 0.00 ins 3-hr Snow: 0.0 ins. BHO SA 1455 10 OVC 15 168/44/42/1310G16/003/ THN F ALQDS/ 8/6// 56043 1 P.M. Weather: Rain Temperature: 46F, Dew point: 46F; Relative Humidity: 100% Wind: SE @ 12G23 kts, Sea-level pressure: 29.83 in Hg; falling very rapidly Visibility: 1/2 miles, fog 6-hr Max temp: 48F 6-hr Min temp: 40F 6-hr Precip: 0.11 ins. 6-hr Snow: 0.0 ins. Snow Depth: 0 ins. BHO SA 1755 X W3 1/2RF 101/46/46/1212G23/983/ RCTD PRESFR/ 8//// 6011/ 58067 10048 20040 SUMMARY FOR SATURDAY, MARCH 27, 2021 TEMPERATURE (DEGREES F) MAX.......63 NORMAL.....48 MIN.......40 NORMAL.....30 MEAN......52 NORMAL.....39 DEPARTURE FROM 30-YEAR (1981-2010) NORMAL....... +13 TOTAL DEPARTURE FOR THE MONTH................... +91 [+3.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............13 DEPARTURE......-13 TOTAL HEATING UNITS FOR THE MONTH..............707 DEPARTURE.....-109 TOTAL HEATING UNITS FOR THE SEASON............4752 DEPARTURE.....-631 TOTAL HEATING UNITS LAST SEASON TO DATE.......4771 DEPARTURE......-19 PEAK WIND GUST (MPH): 420C/Official..............39 WNW @ 1:07 A.M. AEROVANE (south tower).....41 WNW @ 12:35 A.M. ASOS.......................39 WNW @ 12:33 A.M. DAVIS #1...................39 WNW @ 12:00 A.M. DAVIS #2 (south tower).....38 WNW @ 12:37 A.M. RMY........................44 @ 1:09 A.M. VECTOR.....................45 @ 12:32 A.M. MERLIN.....................M FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................28 WNW @ 12:16 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................26 WNW @ 1:11 A.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............29 WNW @ 1:11 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............30 WNW @ 12:12 A.M. MAXIMUM 2-MINUTE RMY AVERAGE....................26 @ 1:08 A.M. MAXIMUM 2-MINUTE VECTOR AVERAGE.................27 @ 12:12 A.M. AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL......11.7 WNW [280 total miles] ASOS.....................11.2 DAVIS #1.................12.1 W DAVIS #2.................12.5 WNW RMY......................11.1 WSW VECTOR...................11.9 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.............1.06 DEPARTURE....-3.80 ASOS.............1.09 TOTAL PRECIPITATION FOR THE YEAR..............9.06 DEPARTURE....-4.22 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....-11.4 TOTAL SNOWFALL FOR THE SEASON.................72.6 DEPARTURE....+14.5 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 63/48/56/+17/0.01/0.0/.../.. 58 W AERO 67 W RMY 63 03/27 63/40/52/+13/0.00/0.0/.../.. 39 WNW AERO 41 WNW RMY 44 03/28 The low since midnight is 37F, the daily normal low is 31F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR MARCH 28 HIGH 86 IN 1998 LOW 7 IN 1923 PRECIP 2.31 INS. IN 1932 SNOWFALL 5.0 INS. IN 2015 PEAK GUST 60e MPH NW IN 1944, 60 WSW IN 1991 RECORDS FOR MARCH 29 HIGH 85 IN 1945 LOW -2 IN 1923 PRECIP 2.78 INS. IN 1984 SNOWFALL 13.5 INS. IN 1984 PEAK GUST 95 MPH ENE IN 1984 TODAY'S REPORT PREPARED BY: Benjamin Turner