Saturday, January 21, 2023

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

SATURDAY, JANUARY 21, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0707E
SUNSET:  1644E

MORE SNOW OVERNIGHT, BUT STILL NO SUNSHINE…

A burst of snow yesterday afternoon into the evening hours
amounted to just under 2″ here on the summit making for a nice
frosted coat of snow on all the trees.

Snowfall totaled 1.8″ bringing the monthly total to 7.0″ and the
seasonal total to 9.7″. While most locations in eastern Southern
New England are snow starved, Blue Hill has managed to make out
better thanks to our elevation. With that said, the snow deficit
for the season here is still 16.9″ below normal to date.

The other “issue” is the lack of sunshine. Today will mark the
3rd consecutive day of not measuring any sunshine. In a month
that’s already seen very low sunshine minutes, this just adds to
the depression of the season.

Temperatures today have been on the cool side with the overcast
skies. Readings have only reached the lower 30s. For what it’s
worth, most of our “warmth” this month has been at night. Normal
lows for this time of year are in the upper teens, of course
we have not been anywhere near that cold here at all the entire
month.

The high so far today is 33F, occurring at midnight which is 1
degree below the normal maximum of 34F. The low since midnight is
27F, which is 10 degrees above the normal minimum of 17F.

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Today’s Observations:

7 A.M.
Weather: Overcast stratus
Temperature: 27F; Dew Point: 26F; Relative Humidity: 96%
Wind: N @ 7 kts
Sea-level pressure: 1017.5 mb; 30.05 in. Hg: rising, then more rapidly
Visibility: 40 miles, thin fog
6-hr Max temp: 29F
6-hr Min temp: 27F
24-hr Precip:  0.20 ins.
24-hr Snowfall: 1.8 ins.
Snow Depth: 2 ins.
BHO SA 1155 E35 OVC 40 175/27/26/3507/005/ THN F ALQDS NEW SNW
PST 24 HRS 1.8 INS/ 8/6// 4/002 53030 70020 10029 20027

10 A.M.
Weather: Overcast stratus
Temperature: 29F; Dew Point: 26F; Relative Humidity: 87%
Wind: NNW @ 4 kts, wind light
Sea-level pressure: 1020.1 mb; 30.12 in. Hg: rising, then more rapidly
Visibility: 40 miles, thin fog
3-hr Precip:  0.00 ins
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E35 OVC 40 201/29/26/3304/012/ THN F ALQDS WND LGT/
8/6// 53026

1 P.M.
Weather: Broken stratocumulus, overcast stratus
Temperature: 30F; Dew Point: 28F; Relative Humidity: 93%
Wind: NW @ 5 kts, wind light
Sea-level pressure: 1019.6 mb; 30.11 in. Hg: falling, then more rapidly
Visibility: 50 miles
6-hr Max temp: 31F
6-hr Min temp: 27F
6-hr Precip:  0.00 ins
6-hr Snowfall: 0.0 ins
Snow Depth: 2 ins.
BHO SA 1755 E15 BKN 30 OVC 50 196/30/28/3205/011/ WND LGT/
8/5// 4/002 58005 10031 20027

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SUMMARY FOR FRIDAY, JANUARY 20, 2023

TEMPERATURE (DEGREES F)
MAX…….35   NORMAL…..34
MIN…….29   NORMAL…..18
MEAN……32   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+6
TOTAL DEPARTURE FOR THE MONTH……………….+178 [+8.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………33  DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE MONTH…………..583  DEPARTURE……-179
TOTAL HEATING UNITS FOR THE SEASON…………2493  DEPARTURE……-479
TOTAL HEATING UNITS LAST SEASON TO DATE…….2972  DEPARTURE……-152

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….52 NE  @  2:25 A.M.
VECTOR #2 (Instantaneous)..55     @  2:22 A.M.
DAVIS #2 ………………53 E   @  2:24 A.M.
RMY #2 (Instantaneous)…..54 NE  @  2:25 A.M.
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………………37 NE  @  2:23 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..37     @  2:22 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………38 E   @  2:22 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..35 NE  @  2:27 A.M.
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……..9.0 N [216 total miles] VECTOR #2………………9.3
DAVIS #2……………….8.6 NNE
RMY #2…………………9.6 N
RMY #1……….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……..0.20 DEPARTURE…..+0.06
TOTAL PRECIPITATION FOR THE MONTH…………..3.95 DEPARTURE……0.98
TOTAL PRECIPITATION FOR THE YEAR……………3.95 DEPARTURE……0.98

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..1.8 DEPARTURE……+1.2
TOTAL SNOWFALL FOR THE MONTH………………..7.0 DEPARTURE……-4.5
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…….9.7 DEPARTURE…..-16.9

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PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
VEC1: Vector #1 1-second gust
RMY:  R.M. Young wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

1/1   53/38/46/+17/0.04/0.0/412/75        39 WNW  VEC1 N/A    RMY 60
1/2   49/33/41/+13/0.00/0.0/044/08        39 WNW  VEC1 N/A    RMY 39
1/3   48/37/43/+15/0.50/0.0/000/00        23 S    VEC1 N/A    RMY 24
1/4   43/37/40/+12/0.31/0.0/000/00        23 NE   VEC1 N/A    RMY 23
1/5   43/33/38/+10/0.23/0.0/000/00        34 ENE  VEC1 N/A    RMY 37
1/6   35/31/33/+5/0.18/1.0/000/00         19 NNE  VEC1 N/A    RMY 19
1/7   40/30/35/+8/0.00/0.0/105/19         22 NW   VEC1 N/A    RMY 23
1/8   36/20/28/+1/0.00/0.0/517/93         26 NNW  VEC1 N/A    RMY 28
1/9   42/26/34/+7/T/0.1/267/48            27 NW   VEC1 N/A    RMY 27
1/10  41/25/33/6/0.00/0.0/318/57          28 NW   VEC1 N/A    RMY 28
1/11  33/18/26/-1/T/0.1/358/64            19 N    VEC1 N/A    RMY 18
1/12  48/28/38/+11/0.29/0.1/000/00        45 S    VEC1 N/A    RMY 46
1/13  55/36/46/+20/0.62/0.0/000/00        54 SSW  VEC1 N/A    RMY 56
1/14  36/29/33/+7/0.11/T/000/00           30 NNE  VEC1 N/A    RMY M
1/15  33/26/30/+4/0.10/1.2/000/00         45 NNE  VEC1 N/A    RMY 45
1/16  30/26/28/+2/0.22/2.7/000/00         36 NNE  VEC1 N/A    RMY 37
1/17  47/25/36/+10/…/…/…/..         22 WSW  VEC1 N/A    RMY 23
1/18  49/35/42/+16/0.03/0.0/…/..        37 NW   VEC1 N/A    RMY 38
1/19  38/32/35/+9/…./T/000/00           31 NNE  VEC1 N/A    RMY 32
1/20  35/29/32/+6/…./…/000/00         52 NE   VEC1 N/A    RMY 54

1/21 The low since midnight is 27F, the daily normal low is 17F

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

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

RECORDS FOR JANUARY 22
HIGH 59F IN 1916
LOW -8F IN 1888,1976
PRECIP 1.24 INS. IN 1891,1987
SNOWFALL 10.0 INS. IN 2005
PEAK GUST 67 MPH W IN 1976

TODAY’S REPORT PREPARED BY: Samantha Richard/Matt Douglas