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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, JANUARY 6, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0713E
SUNSET: 1625E
COLDER WITH MOSTLY CLOUDY SKIES ATOP GREAT BLUE HILL….
We observed improved visibility in comparison to yesterday,
about 35 miles on average. Wind was westerly and on the
increase, reaching a gust of almost 40 mph by the 1 P.M.
observation. Skies are mostly cloudy with mostly low and
upper level stratocumulus and cirrostratus.
Houghton’s Pond has not yet frozen over this season and the
first freeze will be one of the latest on record:
BHO Latest First Freeze, Houghton’s Pond (1885-2022):
1) Jan 18, 2007
2) Jan 9, 2012
3) Jan 5, 1974
Jan 5, 2016
5) Jan 4, 2013
6) Jan 2, 1924
Jan 2, 2009
Special thanks to our Chief Scientist, Mike Iacono for these
statistics!
The high so far today is 38F, which is 2 degrees above the
normal high of 36F. The low since midnight is 32F, which is
12 degrees above the normal low of 20F.
————————————————————–
PRELIMINARY STATS FOR DECEMBER 2021
TEMPERATURE, Deg. F
Avg. Max. 43.0 [+2.8]
Avg. Min. 29.7 [+2.8]
Mean 36.4 [+3.9]
24-hour corrected mean: 36.2
Max. for month: 62F on the 11th
Min. for month: 15F on the 20th
HEATING DEGREE DAYS
Total heating units: 879 [-127]
Total for the season: 1886 [-324]
Total for last season: 2210
PRECIPITATION, Inches
Total: 2.63 [-2.76]
Greatest in 24 hrs: 1.00 inch on the 12th
SNOWFALL, Inches
Total: 1.7 ins. [-10.3]
Greatest in 24 hrs: 1.2 ins. from the 8th-9th
WIND, mph
Avg. uncorrected wind speed: 11.6 mph
Avg. corrected wind speed: 12.1 mph
Prevailing wind direction: WNW [14%]
Peak gust and direction: 59 WNW on the 6th
SUNSHINE:
Campbell-Stokes card minutes: 5790 minutes of a possible 16470 or 35%
Astronomical total minutes: 5973 minutes of a possible 17037 or 35%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Broken cirrostratus
Temperature: 34F; Dew Point: 31F; Relative Humidity: 86%
Wind: W @ 14 kts
Sea-level pressure: 1005.4 mb; 29.69 in. Hg: rising, then more
rapidly
Visibility: 20 miles, thin fog
6-hr Max temp: 40F
6-hr Min temp: 34F
24-hr Precip: 0.21 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 250 BKN 20 054/34/31/2714/969/ THN F ALQDS/ 8/009 53020
70021 10040 20034
10 A.M.
Weather: Scattered stratocumulus, broken cirrostratus
Temperature: 35F; Dew Point: 28F; Relative Humidity: 76%
Wind: WNW @ 14G20 kts
Sea-level pressure: 1008.5 mb; 29.79 in Hg; rising, then more
slowly
Visibility: 35 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 40 SCT 250 BKN 35 085/35/28/3014G20/979/ 8/806 51031
1 P.M.
Weather: Scattered stratocumulus, broken cirrostratus
Temperature: 34F, Dew point: 24F; Relative Humidity: 66%
Wind: W at 14G30 kts, peak of 37 mph S at 12:04 P.M.
Sea-level pressure: 1008.8 mb; 29.80 in Hg; falling then rising
Visibility: 35 miles
6-hr Max temp: 39F
6-hr Min temp: 32F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 40 SCT 250 BKN 35 088/34/24/2714G30/980/ PK WND 2732/04/
8/806 51003 10039 20032
SUMMARY FOR WEDNESDAY, JANUARY 5, 2022
TEMPERATURE (DEGREES F)
MAX…….49 NORMAL…..36
MIN…….25 NORMAL…..20
MEAN……37 NORMAL…..28
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………. +9
TOTAL DEPARTURE FOR THE MONTH……………………….+27 [+5.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………28 DEPARTURE……. -9
TOTAL HEATING UNITS FOR THE MONTH…………..157 DEPARTURE…….-28
TOTAL HEATING UNITS FOR THE SEASON…………2043 DEPARTURE……-351
TOTAL HEATING UNITS LAST SEASON TO DATE…….2094 DEPARTURE…….-51
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….45 S @ 1:05 P.M.
AEROVANE……………….48 S @ 1:03 P.M.
VECTOR #2 (Instantaneous)..47 @ 1:05 P.M.
DAVIS #2 ………………50 S @ 9:16 A.M.
RMY #2 (Instantaneous)…..47 S @ 1:05 P.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………33 S @ 1:06 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..34 @ 1:14 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………34 S @ 1:07 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..35 S @ 1:05 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE…….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE…..OUT OF SERVICE D/T RENOVATIONS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……19.3 S [462 total miles]
VECTOR #2…………….19.3
DAVIS #2……………..19.7 SSW
RMY #2……………….19.7 SSW
RMY #1…………..OUT OF SERVICE D/T RENOVATIONS
ASOS…………….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1………..OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…………OUT OF SERVICE D/T RENOVATIONS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.21 DEPARTURE…..+0.06
TOTAL PRECIPITATION FOR THE MONTH………….0.58 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE YEAR…………. 0.58 DEPARTURE…..-0.18
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH……………….0.0 DEPARTURE……-2.7
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……2.7 DEPARTURE…..-15.1
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 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
12/01 44/30/37/0.00/0.0/263/47 35 W AERO 35 W RMY 34
12/02 58/35/47/10/T/0.0/106/19 56 WNW AERO 59 WNW RMY 62 TSTM
12/03 41/28/35/-1/0.00/0.0/512/92 46 NW AERO 44 NW RMY 46
12/04 39/25/32/-4/0.00/0.0/233/42 25 SW AERO 23 SW RMY 26
12/05 45/32/39/+3/0.00/0.0/460/83 25 SE AERO 25 SE RMY 25
12/06 59/37/48/+13/0.34/0.0/077/14 59 WNW AERO 59 NW RMY 60
12/07 40/29/35/0/T/0.0/436/79 47 WNW AERO 36 WNW RMY 48
12/08 34/25/30/-5/0.05/0.6/000/00 26 NNE AERO 25 NE RMY 26
12/09 35/20/28/-6/0.05/0.6/319/58 32 NW AERO 30 NW RMY 33
12/10 43/27/35/+1/0.00/0.0/000/00 21 SE AERO 20 SE RMY 21
12/11 62/37/50/+16/0.34/0.0/000/00 57 SSW AERO 59 SSW RMY 58
12/12 58/36/47/+13/0.05/0.0/416/76 55 WNW AERO 55 WNW RMY 58
12/13 50/35/43/+10/0.00/0.0/224/41 32 WSW AERO 33 WSW RMY 33
12/14 50/33/42/+9/0.00/0.0/442/81 31 WSW AERO 30 WSW RMY 32
12/15 42/28/35/+2/T/0.0/153/28 35 SSE AERO 35 SSE RMY 36
12/16 58/42/50/+18/0.21/0.0/016/03 35 SW AERO 37 SW RMY 38
12/17 56/39/48/+16/0.00/0.0/518/95 43 WNW AERO 41 WNW RMY 46
12/18 39/31/35/+3/0.52/0.2/000/00 21 NNW AERO 20 NNW RMY 20
12/19 39/20/30/-2/0.39/0.0/082/15 35 NNW AERO 37 NNW RMY 36
12/20 32/15/24/-7/0.00/0.0/528/97 29 SSW AERO 30 SSW RMY 30
12/21 40/27/34/+3/0.00/0.0/371/68 31 SW AERO 32 SW RMY 33
12/22 45/30/38/+7/0.10/0.0/038/07 47 NW AERO 45 NW RMY 47
12/23 30/21/26/-5/0.00/0.0/441/81 39 NW AERO 38 NW RMY 37
12/24 25/20/23/-7/0.01/0.1/000/00 14 N AERO 13 N RMY 14
12/25 34/25/30/0/0.34/0.0/000/00 20 NNW AERO 20 NNW RMY 18
12/26 37/30/34/+4/0.09/T/120/22 37 NW AERO 37 NW RMY 37
12/27 33/26/30/0/T/T/071/13 32 NW AERO 35 NW RMY 35
12/28 42/30/36/+7/0.06/0.1/147/27 34 NW AERO 32 NW RMY 35
12/29 40/32/36/+7/0.01/0.1/000/00 13 WSW AERO 12 WSW RMY 13
12/30 39/36/38/+9/0.04/0.0/000/00 11 N AERO 13 SE RMY 11
12/31 43/39/41/+12/0.03/0.0/000/00 17 S AERO 16 S RMY 18
DAILY RECORDS FOR DECEMBER 2021
12/16/21: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 42F
TIES PREVIOUS RECORD OF 42F SET IN 1982
PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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
1/1 51/43/47/+18/0.08/0.0/000/00 21 SSE AERO 21 SSE RMY 22
1/2 48/29/39/+11/0.29/0.0/000/00 35 NW AERO 36 NW RMY 35
1/3 29/18/24/-4/0.00/0.0/000/00 31 NNW AERO 30 N RMY 30
1/4 30/12/21/-7/0.00/0.0/…/.. 25 S AERO 24 S RMY 25
1/5 49/25/37/+9/…./0.0/…/.. 45 S AERO 48 S RMY 47
1/6 The low since midnight is 34F, the daily normal low is 20F
DAILY RECORDS FOR JANUARY 2022
1/1/22: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 43F
SURPASSES PREVIOUS RECORD OF 42F SET IN 1966
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JANUARY 6
HIGH 66F IN 2007
LOW -14F IN 1896
PRECIP 3.10 INS. IN 1889 [RECORD FOR MONTH]
SNOWFALL 5.2 INS. IN 2005
PEAK GUST 70 MPH WNW IN 1959
RECORDS FOR JANUARY 7
HIGH 60F IN 1930
LOW -8F IN 2018
PRECIP 1.97 INS. IN 1977
SNOWFALL 16.0 INS. IN 1977
PEAK GUST 74 MPH NW IN 1968
TODAY’S REPORT PREPARED BY: Benjamin Turner
