Thursday, January 20, 2022

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

THURSDAY, JANUARY 20, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0708E
SUNSET:  1643E

LIGHTER WIND, BUT SOME LIGHT SNOWFALL….

Wind was not the main factor today after a max gust of 50 mph
from the SSW was seen yesterday. A consistent, light snowfall
was experienced until 2 P.M.; starting an hour before the 7 A.M.
observation. This amounted to a little over 0.6 inches. Mixed
with light rainfall earlier on this morning, the liquid total
is a little over 0.17 inches. Visibility was limited until
noontime, where we saw 85 miles to the northwest.

The high so far today is 33F, this is a degree below the normal
high of 34F. The low since midnight is 31F, which is 13 degrees
above the normal low of 18F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Light snow
Temperature: 33F; Dew Point: 33F; Relative Humidity: 100%
Wind: NW @ 7 kts
Sea-level pressure: 1015.9 mb; 29.99 in. Hg: rising, then
more slowly
Visibility: 1/2 miles, fog
6-hr Max temp: 37F
6-hr Min temp: 33F
24-hr Precip:  0.08 ins.
24-hr Snowfall: Trace
Snow Depth: Trace
BHO SA 1155 X W3 1/2S-F 159/33/33/3107/999/ S-BUKN NEW SNW PST
24 HRS TRACE/ 8//// 51019 70008 10037 20033

10 A.M.
Weather: Light snow
Temperature: 32F; Dew Point: 32F; Relative Humidity: 100%
Wind: NW @ 8G14 kts
Sea-level pressure: 1018.8 mb; 30.09 in Hg; rising
unsteadily
Visibility: 1/2 miles, fog
3-hr Precip:  0.07 ins.
3-hr Snowfall: 0.5 ins.
BHO SA 1455 X W3 1/2S-F 188/32/32/3108G14/009/ NEW SNW
PST 3 HRS 0.5 INS/ 8//// 52029 6007/

1 P.M.
Weather: Broken nimbostratus and overcast cirrus with
breaks S-W-NNW, light snow, sun dimly visible
Temperature: 32F, Dew point: 32F; Relative Humidity: 100%
Wind: NW @ 7 kts
Sea-level pressure: 1018.1 mb; 30.07 in Hg; falling then
rising
Visibility: 5 miles due to fog, then 85 miles S-W-NNW
6-hr Max temp: 33F
6-hr Min temp: 31F
6-hr Precip:  0.09 ins.
6-hr Snowfall: 0.6 ins.
Snow Depth: 1 ins.
BHO SA 1755 65 BKN 20 OVC 5S-F 181/32/32/3107/007/ BINOVC
S-W-NNW SUN DMLY VSBL VSBY 85 MI S-W-NNW NEW SNW PST 6 HRS
0.6 INS./ 8/021 4/001 55007 6009/ 10033 20031

SUMMARY FOR WEDNESDAY, JANUARY 19, 2022

TEMPERATURE (DEGREES F)
MAX…….44     NORMAL…..34
MIN…….16     NORMAL…..18
MEAN……30     NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+4
TOTAL DEPARTURE FOR THE MONTH……………………….+1 [-0.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………35  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..721  DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE SEASON…………2607  DEPARTURE……-326
TOTAL HEATING UNITS LAST SEASON TO DATE…….2535  DEPARTURE…….+72

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….50 SSW @ 12:55 P.M.
AEROVANE……………….53 SSW @ 12:54 P.M.
VECTOR #2 (Instantaneous)..53     @ 12:55 P.M.
DAVIS #2 ………………47 SW  @ 12:39 P.M.
RMY #2 (Instantaneous)…..53 SSW @ 12:55 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………………34 SSW @ 12:26 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..35     @ 12:40 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………33 SSW @ 12:40 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..36 SSW @ 12:40 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…..16.5 SSW  [396 total miles] VECTOR #2……………17.2
DAVIS #2…………….17.1 SW
RMY #2………………17.4 SW
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…….0.08  DEPARTURE…..-0.06
TOTAL PRECIPITATION FOR THE MONTH………….2.59  DEPARTURE…..-0.25
TOTAL PRECIPITATION FOR THE YEAR…………. 2.59  DEPARTURE…..-0.25

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………..TRACE  DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………16.1  DEPARTURE……+5.2
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..18.8  DEPARTURE……-7.2

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

1/01  51/43/47/+18/0.08/0.0/000/00        21 SSE AERO 21 SSE RMY 22
1/02  48/29/39/+11/0.29/0.0/000/00        35 NW  AERO 36 NW  RMY 35
1/03  29/18/24/-4/0.00/0.0/000/00         31 NNW AERO 30 N   RMY 30
1/04  30/12/21/-7/0.00/0.0/546/99         25 S   AERO 24 S   RMY 25
1/05  49/25/37/+9/0.21/0.0/000/00         45 S   AERO 48 S   RMY 47
1/06  40/27/34/+6/0.00/0.0/316/57         36 WNW AERO 36 WNW RMY 36
1/07  28/17/23/-4/0.78/15.7/000/00        39 WNW AERO 38 WNW RMY 39
1/08  26/11/19/-8/0.00/0.0/556/100        34 WNW AERO 32 WNW RMY 34
1/09  41/19/30/+3/0.01/T/017/03           50 SW  AERO 51 SW  RMY 53
1/10  36/17/27/0/T/T/469/84               44 WNW AERO 43 WNW RMY 46
1/11  17/4/11/-16/T/0.1/560/100           36 NW  AERO 37 NW  RMY 35
1/12  40/5/23/-4/42/0.00/0.0/533/95       43 SSW AERO 44 SSW RMY 44
1/13  45/28/37/+11/0.00/0.0/332/59        22 SW  AERO 22 SW  RMY 22
1/14  38/12/25/-1/0.00/0.0/470/83         44 NW  AERO 41 N   RMY 43
1/15  13/1/7/-19/0.00/0.0/488/86          40 NW  AERO 39 NW  RMY 40
1/16  31/0/16/-10/0.00/0.0/…/..         29 ESE AERO 28 ESE RMY 30
1/17  46/31/39/+13/1.14/0.3/…/..        65 ESE AERO 74 ESE RMY 72
1/18  32/17/25/-1/…./…/…/..         46 WNW AERO 44 WNW RMY 45
1/19  44/16/30/+4/0.00/0.0/…/..         50 SSW AERO 53 SSW RMY 51

1/20  The low since midnight is 31F, the daily normal low is 18F

DAILY RECORDS FOR JANUARY 2022

1/1/22: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 43F
SURPASSES PREVIOUS RECORD OF 42F SET IN 1966

1/17/22: DAILY RECORD PEAK GUST OF 65 MPH ESE,
SURPASSES THE PREVIOUS RECORD OF 62 MPH S IN 1994

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR JANUARY 20
HIGH 59F IN 1951
LOW -9F IN 1901
PRECIP 1.95 INS. IN 1978
SNOWFALL 19.0 INS. IN 1978
PEAK GUST 76e MPH NE IN 1978

RECORDS FOR JANUARY 21
HIGH 65F IN 1906
LOW -4F IN 1888
PRECIP 2.49 INS. IN 1979
SNOWFALL 9.0 INS. IN 2014
PEAK GUST 78e MPH SE IN 1979

TODAY’S REPORT PREPARED BY: Benjamin Turner