Wednesday, February 1, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, FEBRUARY 1, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0658E
SUNSET: 1658E
EARLY CLOUDS AND A FEW SNOWFLAKES, OTHERWISE SUNNY AND COLD…
A few very light snow flakes were observed early this morning,
but it wasn’t even enough to coat the ground. Otherwise, clouds
quickly cleared out this morning with plenty of sunshine being
the theme for the balance of the day.
Despite the bright sunshine, temperatures have remained mainly
in the 20s here on the summit with a high of 30F briefly occurring
after the 1pm observation. Today will likely be the first below
normal day since January 11th (which was the only below normal day
for all of January).
Thankfully, the wind is a non-factor today (ie no real wind
chill issues). The average speed for the day has been around
6mph.
Visibility has been excellent all day holding at around 80 miles.
The high so far today is 30F degrees, which is 5 degrees below
the normal maximum of 35F. The low since midnight is 18F degrees,
which is 1 degree above the normal minimum of 17F.
————————————————————–
PRELIMINARY STATS FOR JANUARY 2023
TEMPERATURE, Deg. F
Avg. Max. 41.6 [ +6.9]
Avg. Min. 29.1 [+10.8]
Mean 35.4 [ +8.9]
24-hour corrected mean: 35.0
Max. for month: 55F on the 13th
Min. for month: 18F on the 11th
HEATING DEGREE DAYS
Total heating units: 913 [-280]
Total for the season: 2823 [-580]
Total for last season: 3141
COOLING DEGREE DAYS
Total cooling units: 0 [ 000]
Total for the season: 0 [ 000]
Total for last season: 889
PRECIPITATION, Inches
Total: 6.79 [+2.29]
Greatest in 24 hrs: 1.32 on the 22-23rd
SNOWFALL, Inches
Total: 12.2 [-6.4]
Greatest in 24 hrs: 4.1 on the 23rd
WIND, mph
Avg. uncorrected wind speed: 10.9 mph
Avg. corrected wind speed: 11.4 mph
Prevailing wind direction: North [17%]
Peak gust and direction: 54 SSE on the 13th
SUNSHINE:
Campbell-Stokes card minutes: 4392 of a possible 17130, or 26%
Astronomical total minutes: 4528 of a possible 17657, or 26%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, broken altocumulus/altostratus,
virga distant NNE-SE-SW
Temperature: 19F; Dew Point: 4F; Relative Humidity: 52%
Wind: N @ 5 kts, wind light
Sea-level pressure: 1025.1 mb; 30.27 in. Hg: steady, then rising
Visibility: 80 miles, 15 miles ENE-E, 25 miles SE
6-hr Max temp: 20F
6-hr Min temp: 18F
24-hr Precip: 0.03 ins.
24-hr Snowfall: 0.4 ins.
Snow Depth: Trace
BHO SA 1155 E55 BKN 130 BKN 80 251/19/4/3505/027/ VIRGA DSNT
NNE-SE-SW VSBY 15 ENE-E 25 SE WND LGT NEW SNW PST 24 HRS 0.4 INS/
8/570 4/000 53002 6000/ 70003 10020 20018
10 A.M.
Weather: Clear, few stratocumulus distant NNW-E-S, few cirrus
distant SE-SSW, virga distant N-ESE
Temperature: 23F; Dew Point: 9F; Relative Humidity: 55%
Wind: NNW @ 5 kts, wind light
Sea-level pressure: 1026.0 mb; 30.30 in. Hg: rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 80 260/23/9/3405/030/ FEW SC DSNT NNW-E-S
FEW CI DSNT SE-SSW VIRGA DSNT N-ESE WND LGT/ 8/501 51009
1 P.M.
Weather: Clear, few stratocumulus all quadrants, few cirrus
distant SE-SSW and distant NNW-N, virga distant ENE-SE
Temperature: 29F; Dew Point: 12F; Relative Humidity: 48%
Wind: NNW @ 6 kts, wind light
Sea-level pressure: 1023.8 mb; 30.23 in. Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 29F
6-hr Min temp: 19F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 CLR 80 238/29/12/3406/023/ FEW SC ALQDS FEW CI DSNT
SE-SSW AND DSNT NNW-N VIRGA DSNT ENE-SE WND LGT/ 8/501 58022
10029 20019
————————————————————–
SUMMARY FOR TUESDAY, JANUARY 31, 2023
TEMPERATURE (DEGREES F)
MAX…….39 NORMAL…..35
MIN…….21 NORMAL…..17
MEAN……30 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+4
TOTAL DEPARTURE FOR THE MONTH……………….+277 [+8.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………35 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..913 DEPARTURE……-280
TOTAL HEATING UNITS FOR THE SEASON…………2823 DEPARTURE……-580
TOTAL HEATING UNITS LAST SEASON TO DATE…….3141 DEPARTURE……-318
PEAK WIND GUST (MPH):
420C (Official)…………28 NW @ 1:21 P.M.
VECTOR #2 (1-Sec)……….30 @ 1:21 P.M.
DAVIS #1……………….27 NW @ 1:21 P.M.
DAVIS #2 ………………27 NNW @ 1:21 P.M.
RMY #2 (Instantaneous)…..29 NW @ 1:21 P.M.
MERLIN…………………24 NW
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 NW @ 1:23 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 1:22 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………18 NW @ 1:22 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 NNW @ 1:22 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 NW @ 1:22 P.M.
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…….7.3 N [176 total miles]
VECTOR #2……………..7.5
DAVIS #1………………6.9 NNW
DAVIS #2………………7.3 N
RMY #2………………..7.8 NNW
RMY #1……….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1…….OUT OF SERVICE D/T RENOVATIONS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.03 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..6.79 DEPARTURE…..+2.29
TOTAL PRECIPITATION FOR THE YEAR……………6.79 DEPARTURE…..+2.29
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.4 DEPARTURE……-0.3
TOTAL SNOWFALL FOR THE MONTH……………….12.2 DEPARTURE……-6.4
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……14.9 DEPARTURE…..-18.8
————————————————————–
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/+10/0.02/0.0/415/73 22 WSW VEC1 N/A RMY 23
1/18 49/35/42/+16/0.01/0.0/314/55 37 NW VEC1 N/A RMY 38
1/19 38/32/35/+9/0.75/T/000/00 31 NNE VEC1 N/A RMY 32
1/20 35/29/32/+6/0.56/1.6/000/00 52 NE VEC1 N/A RMY 54
1/21 31/25/28/+2/0.01/0.2/000/00 21 NW VEC1 N/A RMY 21
1/22 35/25/30/+4/0.25/0.2/000/00 21 N VEC1 N/A RMY 20
1/23 34/27/31/+5/1.18/4.1/000/00 36 NNW VEC1 N/A RMY 37
1/24 35/25/20/+4/0.00/0.0/157/27 32 WNW VEC1 N/A RMY 32
1/25 42/27/35/+9/0.45/0.1/012/02 40 SSE VEC1 N/A RMY 42
1/26 53/33/43/+17/0.85/T/029/05 52 S VEC1 N/A RMY 54
1/27 41/25/33/+7/0.00/0.0/577/98 31 WNW VEC1 N/A RMY 29
1/28 48/29/39/+13/0.00/0.0/390/66 38 W VEC1 N/A RMY 40
1/29 49/36/43/+17/T/0.0/101/17 33 S VEC1 N/A RMY 38
1/30 50/36/43/+17/0.00/0.0/327/55 18 SW VEC1 N/A RMY 20
1/31 39/21/30/+4/0.11/0.8/185/31 28 NW VEC1 N/A RMY 29
2/1 The low since midnight is 18F, 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 FEBRUARY 1
HIGH 65F IN 1989
LOW -9F IN 1920
PRECIP 1.86 INS. IN 2021
SNOWFALL 12.7 INS. IN 2021
PEAK GUST 66e MPH SSW IN 1951
RECORDS FOR FEBRUARY 2
HIGH 55F IN 1951, 1973
LOW -12F IN 1961
PRECIP 1.91 INS. IN 1999
SNOWFALL 16.5 INS. IN 2015
PEAK GUST 92 MPH SW IN 1970
TODAY’S REPORT PREPARED BY: Matt Douglas
