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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, DECEMBER 31, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0713E
SUNSET: 1621E
CLOUDY, MILD, AND DAMP TODAY AFTER RECORD WARMTH YESTERDAY….
The temperature yesterday afternoon reached 63F degrees,
establishing a new record high for the day. The old record
was 60F set in 1984.
It remained mild overnight, but it wasn’t warm enough to be
a record. Despite that, the overnight low of 43F degrees was
more than 20F above the normal low for the date!
Clouds have been the theme today with a few off and on
showers moving through this morning. Rainfall amounted to
0.02″ so far, but more is expected later this afternoon
and tonight. Dense fog also overspread the summit this
morning and has continued this afternoon. Visibility has
dropped to only 1/16th of a mile by the 1pm observation.
Despite the clouds and fog, temperatures are still quite
mild for this time of year with readings into the low 50s.
The wind has been out of a southerly direction today,
averaging around 15mph. The highest gust actually came in
the wee hours of this morning with a gust to 29mph occuring
around 2:30am.
The high so far today is 52F, which is 16 degrees above the
normal maximum of 36F. The low since midnight is 43F, which
is 22 degrees above the normal minimum of 21F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, overcast nimbostratus, virga all
quadrants
Temperature: 50F; Dew Point: 48F; Relative Humidity: 92%
Wind: WSW @ 12G17 kts
Sea-level pressure: 1020.3 mb; 30.13 in. Hg: falling then rising
Visibility: 20 miles, 6 miles ESE-SE, 10 mile SSW-W, thin fog
6-hr Max temp: 50F
6-hr Min temp: 43F
24-hr Precip: Trace
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E15 BKN 45 OVC 20 203/50/48/2412G17/013/ RW-E06
VIRGA ALQDS THN F ALQDS VSBY 6 ESE-SE 10 SSW-W/ 8/52/ 55008
6000/ 70000 10050 20043
10 A.M.
Weather: Sky obscured, vertical visibility 200ft
Temperature: 50F; Dew Point: 50F; Relative Humidity: 100%
Wind: SSW @ 11 kts
Sea-level pressure: 1019.1 mb; 30.09 in. Hg: falling, then more rapidly
Visibility: 1/8th mile, fog
3-hr Precip: 0.02 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 X W2 1/8F 191/50/50/2011/009/ RW-E29/ 8//// 58012 6002/
1 P.M.
Weather: Sky obscured, vertical visibility 200ft
Temperature: 51F; Dew Point: 51F; Relative Humidity: 100%
Wind: SW @ 10G16 kts
Sea-level pressure: 1015.9 mb; 30.00 in. Hg: falling, then more rapidly
Visibility: 1/16th mile, fog
6-hr Max temp: 51F
6-hr Min temp: 49F
24-hr Precip: 0.02 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 X W2 1/16F 159/51/51/2210G16/000/ RW-B05E23/ 8////
58032 6002/ 10051 20049
————————————————————–
SUMMARY FOR FRIDAY, DECEMBER 30, 2022
TEMPERATURE (DEGREES F)
MAX…….63r NORMAL…..37
MIN…….39 NORMAL…..21
MEAN……51 NORMAL…..29
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….+22
TOTAL DEPARTURE FOR THE MONTH……………….+44 [+1.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………14 DEPARTURE…….-22
TOTAL HEATING UNITS FOR THE MONTH…………..925 DEPARTURE…….-45
TOTAL HEATING UNITS FOR THE SEASON…………1894 DEPARTURE……-280
TOTAL HEATING UNITS LAST SEASON TO DATE…….1862 DEPARTURE…….+32
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….26 SSW @ 6:37 P.M.
VECTOR #2 (Instantaneous)..28 @ 6:37 P.M.
DAVIS #2 ………………32 S @ 6:43 P.M.
RMY #2 (Instantaneous)…..28 SSW @ 6:37 P.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 SSW @ 6:31 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 @ 6:45 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 S @ 6:43 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 SSW @ 6:45 P.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…….12.3 SW [296 total miles]
VECTOR #2……………..13.1
DAVIS #2………………12.9 SW
RMY #2………………..13.3 SW
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…….TRACE DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..5.51 DEPARTURE…..+0.28
TOTAL PRECIPITATION FOR THE YEAR…………..42.58 DEPARTURE….-11.12
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..2.7 DEPARTURE……-9.4
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…….2.7 DEPARTURE…..-11.9
————————————————————–
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/0.1/546/100 42 NNW AERO N/A RMY 44
12/15 40/30/35/+2/0.09/0.0/000/00 40 E AERO N/A RMY 41
12/16 42/39/41/+9/1.88/0.0/000/00 47 E AERO N/A RMY 48
12/17 42/31/37/+5/0.45/0.1/044/08 37 WNW AERO N/A RMY 38
12/18 39/27/33/+1/0.00/0.0/365/67 29 NW AERO N/A RMY 28
12/19 39/25/32/0/0.00/0.0/469/86 41 WNW AERO N/A RMY 41
12/20 38/25/32/+1/0.00/0.0/544/100 34 NW AERO N/A RMY 35
12/21 37/22/30/-1/0.00/0.0/496/91 17 N AERO N/A RMY 17
12/22 43/28/36/+5/0.28/0.0/038/07 44 E AERO N/A RMY 45
12/23 55/15/35/+4/1.37/T/000/00 74 SE AERO N/A RMY 74
12/24 17/6/12/-18/0.00/0.0/529/97 37 WSW AERO N/A RMY 39
12/25 25/9/17/-13/0.00/0.0/540/99 29 WSW AERO N/A RMY 31
12/26 32/15/24/-6/0.00/0.0/519/95 23 WSW AERO N/A RMY 23
12/27 34/22/28/-2/0.00/0.0/246/45 23 WNW AERO N/A RMY 22
12/28 40/22/31/+2/0.00/0.0/…/.. 35 SSW AERO N/A RMY 36
12/29 54/33/44/+15/0.00/0.0/…/.. 27 SW AERO N/A RMY 28
12/30 63/39/51/+22/0.00/0.0/…/.. 26 SSW AERO N/A RMY 28
12/31 The low since midnight is 43F, the daily normal low is 21F
DAILY RECORDS
12/16/2022: NEW RECORD PRECIPITATION AMOUNT OF 1.88 INS,
THIS BEATS THE OLD RECORD OF 1.67 INS SET IN 1960
12/23/2022: NEW RECORD PEAK GUST OF 74 MPH SE,
BEATING THE OLD RECORD OF 67 MPH SSE IN 2004
12/30/2022: NEW RECORD HIGH MAXIMUM TEMPERATURE OF 63F DEGREES,
BEATING THE OLD RECORD OF 60F DEGREES SET IN 1984
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR DECEMBER 31
HIGH 62 IN 1965
LOW -12 IN 1917
PRECIP 0.96 INS. IN 1906
SNOWFALL 7.5 INS. IN 2008
PEAK GUST 78 MPH NW IN 1990
RECORDS FOR JANUARY 1
HIGH 58F IN 1966
LOW -6F IN 1918
PRECIP 1.45 INS. IN 1982
SNOWFALL 7.2 INS. IN 1938
PEAK GUST 90e MPH S IN 1945
TODAY’S REPORT PREPARED BY: Matt Douglas
