Wednesday, March 24, 2021
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
