Wednesday, January 18, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, JANUARY 18, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0709E
SUNSET: 1640E
MOSTLY CLOUDY WITH INCREASING VISIBILITY ATOP
GREAT BLUE HILL….
Today we observed mostly cloudy skies with excellent
visibility in the afternoon hours. Today’s weather
was on the milder side, with temperatures almost reaching
50F. Spot showers came through around 8 A.M., leaving
0.03 inches in the gauge by the 10 A.M.
Visibility today started around 20 miles, but rose to an
excellent 80 miles by the 1 P.M. observation.
The high so far today is 48F, which is 14 degrees above
the normal maximum of 34F. The low since midnight is 37F,
which is 19 degrees above the normal minimum of 18F.
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Today’s Observations:
7 A.M.
Weather: Overcast altocumulus with breaks NNE-E-SE
Temperature: 39F; Dew Point: 33F; Relative Humidity: 80%
Wind: W @ 9G14 kts
Sea-level pressure: 1003.5 mb; 29.63 in. Hg: rising unsteadily
Visibility: 20 miles, hazy
6-hr Max temp: 39F
6-hr Min temp: 37F
24-hr Precip: 0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: Trace
BHO SA 1155 80 OVC 20 035/39/33/2709G14/963/ FEW BINOVC NNE-E-SE
HAZY/ 8/070 4/000 52007 10039 20037
10 A.M.
Weather: Broken stratocumulus, overcast altocumulus
Temperature: 40F; Dew Point: 38F; Relative Humidity: 92%
Wind: W @ 13G17 kts
Sea-level pressure: 1005.1 mb; 29.68 in. Hg: rising, then
more slowly
Visibility: 40 miles, thin fog
3-hr Precip: 0.03 ins
3-hr Snowfall: 0.0 ins
BHO SA 1455 40 BKN 80 OVC 40 051/40/38/2713G17/968/ THN F ALQDS/
8/57/ 51016 6003/
1 P.M.
Weather: Scattered altocumulus, broken cirrus, few stratocumulus
Temperature: 48F; Dew Point: 37F; Relative Humidity: 66%
Wind: NW @ 11G21 kts
Sea-level pressure: 1004.2 mb; 29.65 in. Hg: falling, then more slowly
Visibility: 80 miles
6-hr Max temp: 48F
6-hr Min temp: 39F
6-hr Precip: 0.03 ins
6-hr Snowfall: 0.0 ins
Snow Depth: 0 ins.
BHO SA 1755 70 SCT 250 BKN 80 042/48/37/3111G21/965/ FEW SC ALQDS/ 8/572
56009 6003/ 10048 20039
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SUMMARY FOR TUESDAY, JANUARY 17, 2023
TEMPERATURE (DEGREES F)
MAX…….47 NORMAL…..34
MIN…….25 NORMAL…..18
MEAN……36 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+10
TOTAL DEPARTURE FOR THE MONTH……………….+147 [+8.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………29 DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH…………..497 DEPARTURE……-148
TOTAL HEATING UNITS FOR THE SEASON…………2407 DEPARTURE……-448
TOTAL HEATING UNITS LAST SEASON TO DATE…….2532 DEPARTURE……-125
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….22 WSW @ 9:32 P.M.
VECTOR #2 (Instantaneous)..23 @ 9:32 P.M.
DAVIS #2 ………………22 WSW @ 10:02 P.M.
RMY #2 (Instantaneous)…..23 NW @ 9:32 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………………15 WSW @ 9:41 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 12:11 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 WSW @ 9:51 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 NW @ 12:11 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…….10.4 W [249 total miles]
VECTOR #2……………..11.3
DAVIS #2………………11.3 WNW
RMY #2………………..11.2 W
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…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..2.60 DEPARTURE…..+0.04
TOTAL PRECIPITATION FOR THE YEAR……………2.60 DEPARTURE…..+0.04
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..2.7 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..5.2 DEPARTURE……-4.6
TOTAL SNOWFALL FOR THE SEASON (2022-2023)…….7.9 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 The low since midnight is 37F, the daily normal low is 18F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JANUARY 18
HIGH 62F IN 1973, 1990
LOW -10F IN 1982
PRECIP 1.68 INS. IN 1915
SNOWFALL 13.0 INS. IN 1948
PEAK GUST 85 MPH SSE IN 2006
RECORDS FOR JANUARY 19
HIGH 59F IN 1973
LOW -11F IN 1887
PRECIP 2.34 INS. IN 1936
SNOWFALL 10.5 INS. IN 1936
PEAK GUST 93e MPH WNW IN 1943
TODAY’S REPORT PREPARED BY: Benjamin Turner
