Saturday, December 10, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, DECEMBER 10, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0702E
SUNSET: 1612E
OVERCAST WITH SOME SNOW FLURRIES AND A COOL
NORTHEASTERLY WIND….
Today we observed overcast skies with a northeasterly
wind around 15 mph. This breeze off the ocean created
some very light snowfall, only leaving a trace by 1 P.M.
Visibility was limited to the east for most of the day,
while 80 miles was seen to the northwest. While
conditions were chilly, they were also humid with the
incoming snowfall.
There is a hope for more snow tomorrow and this afternoon,
as we are at a snow deficit of -2.6 inches on the month and
-5.1 on the year.
The high so far today is 30F, which is 12 degrees below
the normal maximum of 42F. The low since midnight is 27F,
which is the same as the normal minimum.
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Today’s Observations:
7 A.M.
Weather: Overcast stratus
Temperature: 29F; Dew Point: 20F; Relative Humidity: 68%
Wind: NNE @ 11G16 kts
Sea-level pressure: 1028.6 mb; 30.37 in. Hg: rising, then
more rapidly
Visibility: 70 miles
6-hr Max temp: 31F
6-hr Min temp: 29F
24-hr Precip: 0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 20 OVC 70 286/29/20/0211G16/037/ 8/6// 53012
10031 20029
10 A.M.
Weather: Overcast stratus with breaks W-N, light snow
Temperature: 28F; Dew Point: 26F; Relative Humidity: 84%
Wind: NNE @ 9G16 kts
Sea-level pressure: 1030.2 mb; 30.42 in. Hg: rising, then
more rapidly
Visibility: 80 miles, except 8 miles NE-E-S due to virga
3-hr Precip: Trace
3-hr Snowfall: Trace
BHO SA 1455 20 OVC 80S- 302/28/26/0209G16/042/ FEW BINOVC W-N
VSBY 8 NE-E-S VIRGA NE-E-S/ 8/700 53016 6000/
1 P.M.
Weather: Overcast stratus with breaks W-N, very light snow
Temperature: 28F, Dew point: 24F; Relative Humidity: 84%
Wind: NNE @ 12G17 kts
Sea-level pressure: 1029.7 mb; 30.40 in Hg: falling, then
more rapidly
Visibility: 80 miles, except 20 miles NE-E-S due to virga
6-hr Max temp: 30F
6-hr Min temp: 27F
6-hr Precip: Trace
6-hr Snowfall: Trace
Snow Depth: 0 ins.
BHO SA 1755 20 OVC 80S- 297/28/24/0212G17/040/ FEW BINOVC W-N VSBY
20 NE-E-S VIRGA NE-E-S PCPN VRY LGT/ 8/700 58005 10030 20027
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SUMMARY FOR FRIDAY, DECEMBER 9, 2022
TEMPERATURE (DEGREES F)
MAX…….44 NORMAL…..42
MIN…….29 NORMAL…..27
MEAN……37 NORMAL…..34
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+3
TOTAL DEPARTURE FOR THE MONTH………………..+49 [+5.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………28 DEPARTURE……..-3
TOTAL HEATING UNITS FOR THE MONTH…………..215 DEPARTURE…….-49
TOTAL HEATING UNITS FOR THE SEASON…………1184 DEPARTURE……-284
TOTAL HEATING UNITS LAST SEASON TO DATE…….1261 DEPARTURE…….-77
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….29 N @ 8:51 P.M.
VECTOR #2 (Instantaneous)..30 @ 8:51 P.M.
DAVIS #2 ………………36 N @ 8:51 P.M.
RMY #2 (Instantaneous)…..30 N @ 8:51 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………………18 N @ 7:14 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 @ 7:14 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 N @ 7:14 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 N @ 7:14 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…….12.4 N [298 total miles]
VECTOR #2……………..12.5
DAVIS #2………………12.4 N
RMY #2………………..12.4 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……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..1.25 DEPARTURE…..-0.36
TOTAL PRECIPITATION FOR THE YEAR…………..37.90 DEPARTURE….-11.76
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-2.6
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…..TRACE DEPARTURE……-4.1
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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/…/.. 39 SSE AERO N/A RMY 39
12/8 53/33/43/+8/0.00/0.0/…/.. 36 NNW AERO N/A RMY 39
12/9 44/29/37/+3/0.00/0.0/…/.. 29 N AERO N/A RMY 30
12/10 The low since midnight is 29F, the daily normal low is 27F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR DECEMBER 10
HIGH 62 IN 1946
LOW -6 IN 1902
PRECIP 1.67 INS. IN 1907
SNOWFALL 6.0 INS. IN 1905
PEAK GUST 66e SW IN 1940
RECORDS FOR DECEMBER 11
HIGH 63 IN 1911
LOW -1 IN 1988
PRECIP 2.36 INS. IN 1992
SNOWFALL 4.8 INS. IN 2019
PEAK GUST 78 S IN 1969
TODAY’S REPORT PREPARED BY: Benjamin Turner
