Wednesday, January 5, 2022

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

WEDNESDAY, JANUARY 5, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0713E
SUNSET:  1625E

WIND IS THE MAIN FEATURE ON TOP OF THE HILL….

Today reverted back to overcast, but at least we were busy
in the wind department! Average wind speed is over 25 mph
with a max gust of almost 50 mph. Weather conditions are
rainy in the afternoon hours, with only 0.02 inches falling
by the 1 P.M. observation.

Visibility is limited with only 10 miles at best due to fog.
Weather conditions are mild following a very quick cold shot
yesterday.

The high so far today is 49F, which is 13 degrees above the
normal high of 36F. The low since midnight is 35F, which is
15 degrees above the normal low of 20F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken stratocumulus, overcast altostratus, breaks
in overcast NE-E-SE
Temperature: 34F; Dew Point: 32F; Relative Humidity: 92%
Wind: S @ 20G25 kts, peak of 30 mph at 5:59 A.M.
Sea-level pressure: 1018.5 mb; 30.08 in. Hg: falling unsteadily
Visibility: 8 miles, thin fog
6-hr Max temp: 34F
6-hr Min temp: 26F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 20 BKN 140 OVC 8 185/34/32/1820G25/008/ BINOVC NE-E-SE THN F
ALQDS PK WND 1826/1059/ 8/520 57032 10034 20026

10 A.M.
Weather: Overcast stratus, very light rain
Temperature: 43F; Dew Point: 42F; Relative Humidity: 95%
Wind: S @ 21G36 kts, peak of 41 mph S at 9:40 A.M.
Sea-level pressure: 1015.3 mb; 29.98 in Hg; falling, then more
rapidly
Visibility: 10 miles, thin fog
3-hr Precip:  Trace
3-hr Snowfall: 0.0 ins.
BHO SA 1455 20 OVC 10R- 153/43/42/1821G36/998/ THN F ALQDS PCPN VRY
LGT PK WND 1836/40/ 8/6// 58032 6000/

1 P.M.
Weather: Overcast stratus, very light rain
Temperature: 48F, Dew point: 46F; Relative Humidity: 92%
Wind: S at 27G38 kts, peak of 44 mph S at 12:38 P.M.
Sea-level pressure: 1010.3 mb; 29.83 in Hg; falling, then more rapidly
Visibility: 8 miles, thin fog
6-hr Max temp: 49F
6-hr Min temp: 33F
6-hr Precip:  0.02 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 20 OVC 8R- 103/48/46/1827G38/983/ THN F ALQDS PCPN VRY LGT
PK WND 1838/38/ 8/6// 58050 6002/ 10049 20033

SUMMARY FOR TUESDAY, JANUARY 4, 2022

TEMPERATURE (DEGREES F)
MAX…….30     NORMAL…..36
MIN…….12     NORMAL…..20
MEAN……21     NORMAL…..28

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………. -7
TOTAL DEPARTURE FOR THE MONTH……………………….+18 [+4.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………44  DEPARTURE……. +7
TOTAL HEATING UNITS FOR THE MONTH…………..129  DEPARTURE…….-18
TOTAL HEATING UNITS FOR THE SEASON…………2015  DEPARTURE……-342
TOTAL HEATING UNITS LAST SEASON TO DATE…….2059  DEPARTURE…….-44

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….25 S   @ 10:51 P.M.
AEROVANE……………….24 S   @ 10:47 P.M.
VECTOR #2 (Instantaneous)..26     @ 10:51 P.M.
DAVIS #2 ………………22 SW  @  8:15 P.M.
RMY #2 (Instantaneous)…..26 S   @ 10:51 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………………19 S   @ 11:26 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19     @ 10:52 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 SSW @ 10:52 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 S   @ 10:52 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…….9.4 NW  [225 total miles] VECTOR #2…………….10.0
DAVIS #2………………9.7 W
RMY #2……………….10.1 W
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…..-0.24
TOTAL PRECIPITATION FOR THE YEAR…………. 0.37  DEPARTURE…..-0.24

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH……………….0.0  DEPARTURE……-2.2
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……2.7  DEPARTURE…..-14.6

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   30/12/21/-7/0.00/0.0/…/..         25 S   AERO 24 S   RMY 25

1/5   The low since midnight is 26F, 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 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

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

TODAY’S REPORT PREPARED BY: Benjamin Turner