Saturday, March 6, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, MARCH 6, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0612E
SUNSET: 1740E
LIGHTER WIND TODAY WITH ABUNDANT SUNSHINE AND
GREAT VISIBILITY….
Today we observed almost clear skies with a visibility
around 80 miles. Wind is westerly at 10 mph, reaching
a max gust around 30 mph as of yet. Pressure is on a
steady rise, and humidity continues to drop as the day
goes on. The dew point was 7F at the 1 P.M. observation
with a temperature of 31F. This leaves us with a
humidity of 37%!
The high so far today is 31F, 11 degrees below the daily
average max of 42F. The low since midnight is 15F, 9 degrees
below the daily average low of 24F.
Today’s Observations:
7 A.M.
Weather: Clear, few cumulus and cirrostratus
Temperature: 17F; Dew Point: 5F; Relative Humidity: 59%
Wind: WNW @ 10 kts
Sea-level pressure: 29.95 in Hg; rising steadily
Visibility: 80 miles
6-hr Max temp: 21F
6-hr Min temp: 15F
24-hr Precip: 0.00 ins.
24-hr Snow: 0.0 ins.
Snow Depth: Trace
BHO SA 1155 CLR 80 142/17/5/2910/995/ FEW CU/CS ALQDS/ 8/106 53015
10021 20015
10 A.M.
Weather: Clear, few cumulus and cirrostratus
Temperature: 26F; Dew Point: 6F; Relative Humidity: 43%
Wind: WNW @ 10G18 kts
Sea-level pressure: 29.99 in Hg; rising steadily
Visibility: 80 miles
3-hr Precip: 0.00 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 CLR 80 154/26/6/2910G18/999/ FEW CU/CS ALQDS/ 8/106
51012
1 P.M.
Weather: Clear, few cumulus and cirrostratus
Temperature: 31F, Dew point: 7F; Relative Humidity: 36%
Wind: W @ 8 kts
Sea-level pressure: 29.97 in Hg; steady, then decreasing
Visibility: 85 miles
6-hr Max temp: 31F
6-hr Min temp: 17F
6-hr Precip: 0.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: Trace
BHO SA 1755 CLR 85 148/31/7/2608/997/ FEW CU/CS ALQDS/ 8/106
58006 10031 20017
SUMMARY FOR FRIDAY, MARCH 5, 2021
TEMPERATURE (DEGREES F)
MAX…….31 NORMAL…..41
MIN…….18 NORMAL…..23
MEAN……25 NORMAL…..32
DEPARTURE FROM 30-YEAR (1981-2010) NORMAL……..-7
TOTAL DEPARTURE FOR THE MONTH……………….-19 [-4.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………40 DEPARTURE…….+7
TOTAL HEATING UNITS FOR THE MONTH…………..186 DEPARTURE……+19
TOTAL HEATING UNITS FOR THE SEASON…………4231 DEPARTURE…..-504
TOTAL HEATING UNITS LAST SEASON TO DATE…….4262 DEPARTURE……-31
PEAK WIND GUST (MPH):
420C/Official…………..39 WNW @ 1:21 A.M.
AEROVANE (south tower)…..44 NW @ 1:53 A.M.
ASOS…………………..40 WNW @ 1:21 A.M.
DAVIS #1……………….41 NW @ 12:00 A.M.
DAVIS #2 (south tower)…..42 NW @ 12:00 A.M.
RMY……………………45 @ 1:49 A.M.
VECTOR…………………45 @ 2:07 A.M.
MERLIN…………………36
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………29 NW @ 1:55 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….29 NW @ 1:21 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………31 NW @ 12:01 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………32 NW @ 1:55 A.M.
MAXIMUM 2-MINUTE RMY AVERAGE………………..27 NW @ 1:51 A.M.
MAXIMUM 2-MINUTE VECTOR AVERAGE……………..29 @ 12:00 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……17.3 WNW [416 total miles]
ASOS…………………16.2
DAVIS #1……………..17.5 WNW
DAVIS #2……………..18.3 WNW
RMY………………….15.8 NW
VECTOR……………….16.8
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00 DEPARTURE….-0.18
ASOS………….0.00
TOTAL PRECIPITATION FOR THE MONTH………….0.13 DEPARTURE….-0.73
ASOS………….0.16
TOTAL PRECIPITATION FOR THE YEAR…………..8.13 DEPARTURE….-1.15
ASOS…………8.42
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M………..0.0 DEPARTURE…. -0.5
TOTAL SNOWFALL FOR THE MONTH……………… 0.1 DEPARTURE…. -2.5
TOTAL SNOWFALL FOR THE SEASON……………..72.5 DEPARTURE….+23.4
PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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
02/01 32/21/27/+1/1.86/12.7/000/00 53 NE AERO 65 NE RMY 62
02/02 34/29/32/+6/0.91/1.6/000/00 52 NNE AERO 55 NE RMY 58
02/03 34/26/30/+4/0.01/0.2/036/06 20 NW AERO 20 NW RMY 22
02/04 37/26/32/+6/0.02/0.7/158/26 23 NW AERO 22 NW RMY M
02/05 39/26/33/+7/0.01/T/000/00 33 S AERO 32 S RMY 30
02/06 40/28/34/+8/0.00/0.0/595/97 42 WSW AERO 41 WSW RMY 47
02/07 35/25/30/+3/0.71/11.6/000/00 27 WNW AERO 28 WNW RMY 30
02/08 27/13/20/-7/0.00/0.0/619/100 29 NW AERO 31 WNW RMY 32
02/09 27/18/23/-4/0.17/2.2/000/00 16 N AERO 16 N RMY 17
02/10 31/15/23/-4/0.00/0.0/436/70 26 WNW AERO 25 WNW RMY 28
02/11 31/15/23/-4/0.00/0.0/526/84 28 NW AERO 26 NW RMY 31
02/12 25/8/17/-10/0.00/0.0/421/67 32 NW AERO 35 NW RMY 36
02/13 27/15/21/-7/0.00/0.0/252/40 20 NNW AERO 20 NNW RMY 23
02/14 34/24/29/+1/0.00/0.0/000/00 19 ENE AERO 16 ENE RMY 19
02/15 31/27/29/+1/0.11/0.0/000/00 21 NNE AERO 21 NNE RMY 22
02/16 44/29/37/+9/0.63/0.0/000/00 39 W AERO 41 W RMY 43
02/17 30/19/25/-3/0.00/0.0/552/86 40 W AERO 41 WNW RMY 40
02/18 29/21/25/-4/0.13/1.7/000/00 24 ENE AERO 24 ENE RMY 25
02/19 30/24/27/-2/0.66/7.7/000/00 24 NE AERO 23 NE RMY 24
02/20 32/19/26/-3/0.02/0.5/156/24 32 NW AERO 35 NW RMY 38
02/21 33/15/24/-5/0.00/0.0/653/100 27 NW AERO 28 NW RMY 29
02/22 40/21/31/+2/0.22/T/020/03 41 S AERO 41 SSE RMY 44
02/23 43/31/37/+7/0.00/0.0/…/.. 31 WNW AERO 31 WNW RMY 32
02/24 49/34/42/+12/0.00/0.0/…/.. 39 SSW AERO 39 SSW RMY 42
02/25 43/28/30/+6/0.00/0.0/…/.. 50 WNW AERO 55 WNW RMY 57
02/26 40/22/31/+1/0.00/0.0/…/.. 22 WNW AERO 22 WNW RMY 21
02/27 47/29/38/+7/0.21/0.1/…/.. 40 SSE AERO 41 SSE RMY 44
02/28 41/33/37/+6/0.01/0.0/…/.. 24 NW AERO 22 NW RMY 25
DAILY RECORDS
02/01 -RECORD SNOWFALL OF 12.7 INS, BREAKING PREVIOUS RECORD
OF 11.0 INS SET IN 1898
02/01 -RECORD PRECIPITATION OF 1.86 INS, BREAKING PREVIOUS
RECORD OF 1.30 INS SET IN 1898
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/…/.. 69 WNW AERO 78 WNW RMY 78
03/02 27/10/19/-12/T/0.1/…/.. 63 WNW AERO 71 WNW RMY 69
03/03 45/19/32/0/0.00/0.0/…/.. 30 W AERO 30 W RMY 34
03/04 38/22/30/0/0.00/0.0/…/.. 46 NW AERO 51 NW RMY 53
03/05 31/18/25/-7/0.00/0.0/…/.. 39 WNW AERO 44 NW RMY 45
03/06 The low since midnight is 15F, the daily normal low is 23F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 6
HIGH 66 IN 1894
LOW 3 IN 1948, 2007
PRECIP 1.85 INS. IN 2001
SNOWFALL 15.5 INS. IN 2001
PEAK GUST 82 MPH S IN 1959
RECORDS FOR MARCH 7
HIGH 66 IN 1946
LOW -1 IN 1890
PRECIP 2.05 INS. IN 1967
SNOWFALL 11.5 INS. IN 2013
PEAK GUST 66 MPH NE IN 1962
TODAY’S REPORT PREPARED BY: Benjamin Turner