Monday, March 22, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, MARCH 22, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0545E
SUNSET: 1759E
THE FAIR WEATHER DAYS CONTINUE….
We observed partly cloudy skies today with a visibility
of 70 miles on average. Mild weather in the region
continues to exist, as well as abundant sunshine.
Dry conditions continue to be an issue, so a fire risk persists.
The wind is calmer today, with a max gust of around
16 mph early this morning. The monthly precipitation departure
stands at -2.77″ and the yearly departure is -3.19″.
The high so far today is 60F, which is 14 degrees above the
normal high of 46F. The low since midnight is 36F, which
is 8 degrees above the daily normal low of 28F.
Today’s Observations:
7 A.M.
Weather: Broken cirrostratus
Temperature: 43F; Dew Point: 25F; Relative Humidity: 49%
Wind: SSW @ 8 kts
Sea-level pressure: 30.46 in Hg; rising steadily
Visibility: 75 miles
6-hr Max temp: 43F
6-hr Min temp: 36F
24-hr Precip: 0.00 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 250 BKN 75 315/43/25/2108/046/ 8/006 53002 10043
20036
10 A.M.
Weather: Scattered cirrus
Temperature: 52F; Dew Point: 23F; Relative Humidity: 32%
Wind: SW @ 7 kts
Sea-level pressure: 30.46 in Hg; steady
Visibility: 70 miles, thin smoke layer
3-hr Precip: 0.00 ins
3-hr Snow: 0.0 ins.
BHO SA 1455 250 SCT 70 315/52/23/2207/046/ THN K LYR ALQDS/
8/001 50000
1 P.M.
Weather: Scattered cirrus
Temperature: 59F, Dew point: 27F; Relative Humidity: 29%
Wind: SW @ 7 kts
Sea-level pressure: 30.39 in Hg; falling steadily
Visibility: 70 miles
6-hr Max temp: 60F
6-hr Min temp: 43F
6-hr Precip: 0.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 250 SCT 70 290/59/27/2307/039/ 8/001 58025
10060 20043
SUMMARY FOR SUNDAY, MARCH 21, 2021
TEMPERATURE (DEGREES F)
MAX…….62 NORMAL…..46
MIN…….39 NORMAL…..28
MEAN……51 NORMAL…..37
DEPARTURE FROM 30-YEAR (1981-2010) NORMAL……. +14
TOTAL DEPARTURE FOR THE MONTH………………. +16 [+0.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………14 DEPARTURE……-14
TOTAL HEATING UNITS FOR THE MONTH…………..638 DEPARTURE……-16
TOTAL HEATING UNITS FOR THE SEASON…………4683 DEPARTURE…..-539
TOTAL HEATING UNITS LAST SEASON TO DATE…….4615 DEPARTURE……+68
PEAK WIND GUST (MPH):
420C/Official…………..22 S @ 6:23 P.M.
AEROVANE (south tower)…..23 S @ 6:14 P.M.
ASOS…………………..23 S @ 6:16 P.M.
DAVIS #1……………….23 S @ 6:23 P.M.
DAVIS #2 (south tower)…..26 SSE @ 6:23 P.M.
RMY……………………25 @ 6:22 P.M.
VECTOR…………………26 @ 6:23 P.M.
MERLIN…………………24
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 S @ 6:21 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….17 S @ 6:22 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 S @ 6:23 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S @ 6:19 P.M.
MAXIMUM 2-MINUTE RMY AVERAGE………………..17 S @ 6:15 P.M.
MAXIMUM 2-MINUTE VECTOR AVERAGE……………..18 @ 6:16 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….8.5 SSW [204 total miles] ASOS………………….9.2
DAVIS #1………………8.9 WSW
DAVIS #2………………9.4 SSW
RMY…………………..8.8 S
VECTOR………………..9.3
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….-2.77
ASOS………….0.98
TOTAL PRECIPITATION FOR THE YEAR…………..8.94 DEPARTURE….-2.19
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…. -9.5
TOTAL SNOWFALL FOR THE SEASON……………..72.6 DEPARTURE….+16.4
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 The low since midnight is 36F, the daily normal low is 28F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 22
HIGH 81 IN 2012
LOW 3 IN 1885
PRE 3.48 INS. IN 2001
SNOW 8.7 INS. 1967
WIND 84e MPH E IN 1977
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
TODAY’S REPORT PREPARED BY: Benjamin Turner
