Monday, December 26, 2022

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

MONDAY, DECEMBER 26, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0712E
SUNSET:  1618E

ANOTHER CHILLY DAY, YET MILDER….

Today is milder than the days prior, with temperatures
making their way into the mid 30’s. Skies have a thin
layer of upper-level clouds, and sunshine is abundant.
Visibility is much better, reaching 85 miles by the
1 P.M. observation. Wind is a little under 10 mph on
average from the west with a max gust of 22 mph earlier
this morning.

The ponds are mostly frozen at this point, with Houghton’s
still not having complete ice cover.

The high so far today is only 25F, which is 13 degrees below the
normal maximum of 38F. The low since midnight is 15F, which
is 7 degrees below the normal minimum of 22F.

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Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus NE-E-S
Temperature: 15F; Dew Point: 8F; Relative Humidity: 67%
Wind: W @ 14 kts
Sea-level pressure: 1018.4 mb; 30.08 in. Hg: rising, then
more rapidly
Visibility: 20 miles, haze
6-hr Max temp: 17F
6-hr Min temp: 15F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 CLR 20 184/15/8/2714/008/ FEW SC NE-E-S HAZY/
8/500 53027 10017 20015

10 A.M.
Weather: Broken thin cirrus, few distant stratocumulus
offshore
Temperature: 23F; Dew Point: 13F; Relative Humidity: 64%
Wind: WNW @ 10G16 kts
Sea-level pressure: 1020.6 mb; 30.15 in. Hg: rising, then
more slowly
Visibility: 80 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 250 -BKN 80 206/23/13/3010G16/015/ FEW SC DSNT
OFFSHR NE-E-S/ 8/501 51022

1 P.M.
Weather: Broken thin cirrocumulus
Temperature: 30F; Dew Point: 12F; Relative Humidity: 47%
Wind: WSW @ 7G14 kts
Sea-level pressure: 1020.3 mb; 30.14 in. Hg: falling
unsteadily
Visibility: 85 miles
6-hr Max temp: 31F
6-hr Min temp: 15F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 250 -BKN 85 203/30/12/2507G14/014/ 8/009 57003
10031 20015

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SUMMARY FOR SUNDAY, DECEMBER 25, 2022

TEMPERATURE (DEGREES F)
MAX…….25   NORMAL…..38
MIN……..9   NORMAL…..22
MEAN……17   NORMAL…..30

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..-13
TOTAL DEPARTURE FOR THE MONTH………………..+13 [+0.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………48  DEPARTURE…….+13
TOTAL HEATING UNITS FOR THE MONTH…………..778  DEPARTURE…….-14
TOTAL HEATING UNITS FOR THE SEASON…………1747  DEPARTURE……-248
TOTAL HEATING UNITS LAST SEASON TO DATE…….1711  DEPARTURE…….+36

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….29 WSW @  3:08 A.M.
VECTOR #2 (Instantaneous)..30     @  3:43 A.M.
DAVIS #2 ………………30 W   @  1:40 A.M.
RMY #2 (Instantaneous)…..31 WSW @  3:08 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………………20 WSW @  3:03 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20     @  3:48 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 WSW @  2:10 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 WSW @  8:04 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…….13.0 WSW [312 total miles] VECTOR #2……………..13.7
DAVIS #2………………14.0 WSW
RMY #2………………..13.6 WSW
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……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..5.51 DEPARTURE…..+1.08
TOTAL PRECIPITATION FOR THE YEAR…………..42.58 DEPARTURE….-10.32

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH………………..2.7 DEPARTURE……-6.8
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…….2.7 DEPARTURE……-9.3

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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

12/1  40/30/35/-2/0.00/0.0/520/93         54 NW   AERO N/A    RMY 60
12/2  44/27/36/-1/0.00/0.0/535/96         24 SSW  AERO N/A    RMY 25
12/3  57/36/47/+11/0.31/0.0/000/00        54 SSW  AERO N/A    RMY 57
12/4  41/30/36/0/0.00/0.0/355/64          39 WNW  AERO N/A    RMY 41
12/5  48/29/39/+3/0.00/0.0/454/82         32 SSW  AERO N/A    RMY 32
12/6  54/38/46/+11/0.09/0.0/000/00        30 SSE  AERO N/A    RMY 31
12/7  56/46/51/+16/0.85/0.0/000/00        39 SSE  AERO N/A    RMY 39
12/8  53/33/43/+8/0.00/0.0/534/97         36 NNW  AERO N/A    RMY 39
12/9  44/29/37/+3/0.00/0.0/549/100        29 N    AERO N/A    RMY 30
12/10 31/27/29/-5/0.04/0.4/000/00         27 NE   AERO N/A    RMY 26
12/11 30/23/27/-7/0.15/2.1/000/00         25 NNE  AERO N/A    RMY 26
12/12 29/21/25/-9/T/T/395/72              24 N    AERO N/A    RMY 24
12/13 38/19/29/-4/0.00/0.0/547/100        38 NNW  AERO N/A    RMY 38
12/14 35/18/27/-6/T/0.1/…/..            42 NNW  AERO N/A    RMY 44
12/15 40/30/35/+2/0.09/0.0/…/..         40 E    AERO N/A    RMY 41
12/16 42/39/41/+9/1.88/0.0/…/..         47 E    AERO N/A    RMY 48
12/17 42/31/37/+5/0.45/0.1/…/..         37 WNW  AERO N/A    RMY 38
12/18 39/27/33/+1/0.00/0.0/…/..         29 NW   AERO N/A    RMY 28
12/19 39/25/32/0/0.00/0.0/…/..          41 WNW  AERO N/A    RMY 41
12/20 38/25/32/+1/0.00/0.0/…/..         34 NW   AERO N/A    RMY 35
12/21 37/22/30/-1/0.00/0.0/…/..         17 N    AERO N/A    RMY 17
12/22 43/28/36/+5/…./0.0/…/..         44 E    AERO N/A    RMY 45
12/23 55/15/35/+4/…./0.0/…/..         74 SE   AERO N/A    RMY 74
12/24 17/6/12/-18/…./0.0/…/..         37 WSW  AERO N/A    RMY 39
12/25 25/9/17/-13/0.00/0.0/…/..         29 WSW  AERO N/A    RMY 31

12/26 The low since midnight is 15F, the daily normal low is 22F

DAILY RECORDS

12/16/2022: NEW PRECIPITATION RECORD OF 1.88 INS,
THIS BEATS THE OLD RECORD OF 1.67 INS SET IN 1960

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

RECORDS FOR DECEMBER 26
HIGH 58 IN 1973,1982
LOW -12 IN 1980
PRECIP 3.64 INS. IN 1969
SNOWFALL 17.5 INS. IN 1909
PEAK GUST 84 MPH SSE IN 1957

RECORDS FOR DECEMBER 27
HIGH 57 IN 1895,1949
LOW -4 IN 1903
PRECIP 2.43 INS. IN 1969
SNOWFALL 11.2 INS. IN 1947
PEAK GUST 73 S IN 2011

TODAY’S REPORT PREPARED BY: Benjamin Turner