Tuesday, January 4, 2022

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

TUESDAY, JANUARY 4, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0713E
SUNSET:  1625E

SUNSHINE RETURNS, BUT STILL QUITE COLD….

Much to the excitement of many, the sun has finally returned
after a one week hiatus, However it’s visit promises to be brief
as clouds move back in tonight and tomorrow looks to be
another gloomy day.

Despite the bright sunshine today it’s still rather cold. The
temperature has been gradually working its way through the
20s after bottoming out this morning at 12F degrees. As a
matter of fact, the low this morning is the coldest we’ve
recorded so far this winter season.

On the plus side, the wind has been quite light today, only
averaging around 9mph for the day, although speeds have been
mostly under 5mph so far this afternoon.

Visibility has been excellent today within the arctic air
mass with 80 miles being observed.

The high so far today is 27F, which is 9 degrees below the
normal high of 36F. The low since midnight is 12F, which is
8 degrees below the normal low of 20F.

Here are some interesting December and Annual rankings per our
Chief Scientist Mike Iacono! December tied for tenth
warmest and 2021 tied for fifth warmest year.

BHO Warmest December 24-hour Adjusted Mean Temperature, deg F (1885-2021):

1) 42.9 in 2015
2) 38.1 in 2006
3) 37.5 in 2011
4) 37.3 in 2001
5) 37.2 in 1891
6) 36.9 in 1998
7) 36.7 in 1990
8) 36.6 in 1953
9) 36.3 in 1996
10) 36.2 in 2012
36.2 in 2021

BHO Warmest Annual Mean Temperature, deg F (1885-2021):

1) 51.7 in 2012
2) 51.3 in 2020
3) 51.2 in 2016
4) 51.0 in 2010
5) 50.9 in 1999
50.9 in 2021
7) 50.8 in 1998
8) 50.6 in 2006
9) 50.5 in 1953
10) 50.4 in 2011

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus offshore distant NNE-SE
Temperature: 13F; Dew Point: -1F; Relative Humidity: 54%
Wind: NW @ 8 kts
Sea-level pressure: 1026.7 mb; 30.32 in. Hg: rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 17F
6-hr Min temp: 13F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 CLR 70 267/13/-1/3208/032/ FEW SC OFFSHR DSNT NNE-SE/
8/500 51032 10017 20013

10 A.M.
Weather: Clear, few stratocumulus offshore distant NNE-SE
Temperature: 20F; Dew Point: 5F; Relative Humidity: 52%
Wind: NW @ 6 kts
Sea-level pressure: 1028.5 mb; 30.37 in Hg; rising, then more slowly
Visibility: 80 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 80 285/20/5/3106/037/ FEW SC OFFSHR DSNT NNE-SE/
8/500 51018

1 P.M.
Weather: Clear, few cirrus distant S-SW
Temperature: 27F, Dew point: 6F; Relative Humidity: 41%
Wind: W at 3 kts, wind light and variable
Sea-level pressure: 1026.6 mb; 30.32 in Hg; falling, then more slowly
Visibility: 80 miles
6-hr Max temp: 27F
6-hr Min temp: 12F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 CLR 80 266/27/6/2703/032/ FEW CI DSNT S-SW WND L/V/
8/001 56019 10027 20012

SUMMARY FOR MONDAY, JANUARY 3, 2022

TEMPERATURE (DEGREES F)
MAX…….29     NORMAL…..36
MIN…….18     NORMAL…..20
MEAN……24     NORMAL…..28

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………. -4
TOTAL DEPARTURE FOR THE MONTH……………………….+25 [+8.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………41  DEPARTURE……. +4
TOTAL HEATING UNITS FOR THE MONTH……………85  DEPARTURE…….-25
TOTAL HEATING UNITS FOR THE SEASON…………1971  DEPARTURE……-349
TOTAL HEATING UNITS LAST SEASON TO DATE…….2027  DEPARTURE…….-56

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….31 NNW @  6:07 A.M.
AEROVANE……………….30 N   @  3:05 P.M.
VECTOR #2 (Instantaneous)..32     @  6:07 A.M.
DAVIS #2 ………………28 NNW @  6:15 A.M.
RMY #2 (Instantaneous)…..30 N   @  6:15 A.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………………19 NNW @ 10:53 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19     @ 10:53 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 N   @ 10:54 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 NNW @ 10:53 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……12.3 NNW  [296 total miles] VECTOR #2…………….12.6
DAVIS #2……………..12.4 N
RMY #2……………….12.4 N
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…….0.00  DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH………….0.37  DEPARTURE…..-0.09
TOTAL PRECIPITATION FOR THE YEAR…………. 0.37  DEPARTURE…..-0.09

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……-1.6
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……2.7  DEPARTURE…..-14.0

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/T/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   The low since midnight is 12F, 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 4
HIGH 60F IN 2000
LOW -8F IN 1904, 1981
PRECIP 1.79 INS. IN 1982
SNOW 16.5 INS. IN 2018
PEAK GUST 84 MPH S IN 1982

RECORDS FOR JANUARY 5
HIGH 61F IN 2007
LOW -9F IN 1981
PRECIP 1.15 INS. IN 2019
SNOW 4.5 INS. IN 1891
PEAK GUST 70 MPH WNW IN 1959

TODAY’S REPORT PREPARED BY: Matt Douglas