Sunday, January 9, 2022

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

SUNDAY, JANUARY 9, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0713E
SUNSET:  1630E

VERY WINDY WITH LIMITED VISIBILITY ATOP GREAT BLUE HILL….

We observed a limited visibility of 25 miles on average due
to a thin fog layer. Some ice pellets fell this morning before
the 7 A.M. observation, leaving barely a trace. The wind has
been the main factor today, as we are seeing gusts of almost
50 mph this afternoon. This does not come close to the wind
record for the calendar date of 101 mph, set in 1978. This is
also the highest wind record for the entire month!

The high so far today is 40F, which is 5 degrees above the
normal high of 35F. The low since midnight is 19F, which is
the same as the normal low.

————————————————————–

PRELIMINARY STATS FOR DECEMBER 2021

TEMPERATURE, Deg. F
Avg. Max. 43.0 [+2.8] Avg. Min. 29.7 [+4.8] 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: 0.91 inches on the 18th-19th

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 stratocumulus, overcast altocumulus with
breaks NE-E-S. Ice pellets fell between 6:30 and 6:45 A.M.
Temperature: 27F; Dew Point: 23F; Relative Humidity: 84%
Wind: SW @ 19G24 kts
Sea-level pressure: 1027.2 mb; 30.33 in. Hg: falling, then
less rapidly
Visibility: 15 miles
6-hr Max temp: 28F
6-hr Min temp: 20F
24-hr Precip:  Trace
24-hr Snowfall: Trace
Snow Depth: 9 ins.
BHO SA 1155 40 BKN 120 OVC 15IP- 262/27/23/2219G24/030/ BINOVC NE-E-S
THN F ALQDS IP-B30E45/ 8/570 4/009 56033 70000 6000/ 10028 20020

10 A.M.
Weather: Broken stratocumulus, overcast altocumulus
Temperature: 33F; Dew Point: 30F; Relative Humidity: 88%
Wind: SW @ 21G36 kts, peak of 42 mph SW at 9:51 A.M.
Sea-level pressure: 1031.7 mb; 30.47 in Hg; falling unsteadily
Visibility: 20 mile, thin fog
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 40 BKN 120 OVC 20 223/33/30/2221G36/042/ THN F ALQDS
PK WND 2236/51/ 8/570 57039

1 P.M.
Weather: Broken stratocumulus, overcast altocumulus
Temperature: 39F, Dew point: 32F; Relative Humidity: 75%
Wind: SSW at 24G34 kts, peak of 44 mph SSW at 12:30 P.M.
Sea-level pressure: 1015.7 mb; 30.23 in Hg; falling unsteadily
Visibility: 30 miles
6-hr Max temp: 40F
6-hr Min temp: 27F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 9 ins.
BHO SA 1755 40 BKN 120 OVC 30 157/39/32/2024G34/023/ PK WND
2238/30/ 8/570 4/009 57066 10040 20027

SUMMARY FOR SATURDAY, JANUARY 8, 2022

TEMPERATURE (DEGREES F)
MAX…….26     NORMAL…..35
MIN…….11     NORMAL…..19
MEAN……19     NORMAL…..27

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………. -8
TOTAL DEPARTURE FOR THE MONTH……………………….+21 [+2.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………46  DEPARTURE……. +8
TOTAL HEATING UNITS FOR THE MONTH…………..276  DEPARTURE…….-22
TOTAL HEATING UNITS FOR THE SEASON…………2162  DEPARTURE……-346
TOTAL HEATING UNITS LAST SEASON TO DATE…….2191  DEPARTURE…….-29

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….34 WNW @  4:46 A.M.
AEROVANE……………….32 WNW @  5:46 A.M.
VECTOR #2 (Instantaneous)..36     @  4:46 A.M.
DAVIS #2 ………………33 WNW @  4:47 A.M.
RMY #2 (Instantaneous)…..34 WNW @  4:40 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………………23 WNW @  6:20 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25     @  6:20 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 NW  @  6:20 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 NW  @  6:20 A.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……12.7 WNW [283 total miles] VECTOR #2…………….12.6
DAVIS #2……………..12.4 NW
RMY #2……………….12.6 WNW
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……TRACE  DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH………….1.36  DEPARTURE…..+0.15
TOTAL PRECIPITATION FOR THE YEAR…………. 1.36  DEPARTURE…..+0.15

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………..TRACE  DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH………………15.7  DEPARTURE…..+11.4
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..18.4  DEPARTURE……-1.0

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/+7/0.01/0.1/000/00       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/+9/0.21/0.0/…/..         45 S   AERO 48 S   RMY 47
1/6   40/27/34/+6/0.00/0.0/…/..         36 WNW AERO 36 WNW RMY 36
1/7   28/17/23/-4/0.78/15.7/…/..        39 WNW AERO 38 WNW RMY 39
1/8   26/11/19/-8/0.00/0.0/…/..         34 WNW AERO 32 WNW RMY 34

1/9  The low since midnight is 19F, the daily normal low is 19F

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 9
HIGH 62F IN 1937
LOW -9F IN 1968
PRECIP 3.00 INS. IN 1956
SNOWFALL 10.0 INS. IN 1904
PEAK GUST 101e MPH SE IN 1978 [RECORD FOR MONTH]

RECORDS FOR JANUARY 10
HIGH 58F IN 2016
LOW -7F IN 2004
PRECIP 2.74 INS. IN 1935
SNOWFALL 8.0 INS. IN 1896
PEAK GUST 73e SE IN 1977

TODAY’S REPORT PREPARED BY: Benjamin Turner