Sunday, February 12, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, FEBRUARY 12, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0645E
SUNSET: 1712E
INCREASING CLOUDS, BUT ONCE AGAIN ON THE MILD SIDE….
A rather tranquil day here on the summit today with filtered
sunshine gradually diminishing as clouds thicken early this
afternoon. Temperatures are once again on the mild side with
readings getting into the mid and upper 40s, a good 10+F
degrees above what we’d expect entering mid February.
Thanks to rather light winds, one is able to fully enjoy
these mild temperatures with no threat of a wind chill. Plus
with the increasing sun angle, you can really feel the
“warmth” in the air.
As mentioned, the wind has been light, only averaging around
12mph for the day so far. The peak gust for the day, occurring
around 3am, was 22mph. However speeds have generally been
under 10mph since after the 7am observation.
Visibility has been excellent all day, holding at around
80 miles.
The high so far today is 47F, which is 11 degrees above the
normal maximum of 36F. The low since midnight is 28F, which
is 9 degrees above the normal low of 19F.
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Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus, few altocumulus distant NW
Temperature: 30F; Dew Point: 21F; Relative Humidity: 69%
Wind: WSW @ 13 kts
Sea-level pressure: 1021.5 mb; 30.17 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 31F
6-hr Min temp: 28F
24-hr Precip: 0.00
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 250 -SCT 80 215/30/21/2413/017/ FEW AC DSNT NW/
8/071 51003 10031 20028
10 A.M.
Weather: Thin broken cirrus
Temperature: 39F; Dew Point: 22F; Relative Humidity: 50%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1020.8 mb; 30.14 in. Hg: rising, then falling
Visibility: 80 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E250 -BKN 80 208/39/22/2606/014/ WND LGT/ 8/001 58007
1 P.M.
Weather: Overcast cirrus, few breaks in overcast distant NW-NE,
few altocumulus distant SE-SW
Temperature: 45F; Dew Point: 18F; Relative Humidity: 32%
Wind: W @ 3 kts, wind light
Sea-level pressure: 1017.2 mb; 30.04 in. Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 47F
6-hr Min temp: 30F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E220 OVC 80 172/45/18/2603/004/ FEW BINOVC DSNT NW-NE
FEW AC DSNT SE-SW WND LGT/ 8/074 58036 10047 20030
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SUMMARY FOR SATURDAY, FEBRUARY 11, 2023
TEMPERATURE (DEGREES F)
MAX…….43 NORMAL…..36
MIN…….31 NORMAL…..19
MEAN……37 NORMAL…..27
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+10
TOTAL DEPARTURE FOR THE MONTH………………..+30 [+2.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………28 DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH…………..392 DEPARTURE…….-29
TOTAL HEATING UNITS FOR THE SEASON…………3215 DEPARTURE……-610
TOTAL HEATING UNITS LAST SEASON TO DATE…….3504 DEPARTURE……-289
PEAK WIND GUST (MPH):
420C (Official)…………41 NW @ 2:48 A.M.
VECTOR #2 (1-Sec)……….49 @ 2:46 A.M.
DAVIS #1……………….M
DAVIS #2 ………………M
RMY #2 (Instantaneous)…..46 NNW @ 2:46 A.M.
MERLIN…………………M
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………34 WNW @ 2:33 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..33 @ 2:37 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………M
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………M
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..32 WNW @ 2:37 A.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……13.5 WNW [324 total miles]
VECTOR #2…………….14.2
DAVIS #1……………..M
DAVIS #2……………..M
RMY #2……………….13.9 WNW
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……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..0.01 DEPARTURE…..-1.46
TOTAL PRECIPITATION FOR THE YEAR……………6.80 DEPARTURE…..+0.83
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..0.1 DEPARTURE……-7.3
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……15.0 DEPARTURE…..-26.1
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PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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
2/1 30/18/24/-2/T/T/552/92 17 NW VEC1 N/A RMY 20
2/2 38/19/29/+3/0.00/0.0/518/86 25 SW VEC1 N/A RMY 29
2/3 28/-11/9/-17/T/T/557/92 56 WNW VEC1 N/A RMY 64
2/4 14/-14/0/-26/0.00/0.0/473/78 45 NW VEC1 N/A RMY 51
2/5 49/14/32/+5/0.00/0.0/359/59 38 SW VEC1 N/A RMY 43
2/6 47/30/39/+12/0.00/0.0/025/04 28 NE VEC1 N/A RMY 29
2/7 31/22/27/0/0.01/0.1/461/75 29 SSW VEC1 N/A RMY 33
2/8 46/31/39/+12/0.00/0.0/…/.. 30 NW VEC1 N/A RMY 34
2/9 49/33/41/+14/T/0.0/…/.. 31 SSE VEC1 N/A RMY 32
2/10 60/31/46/+19/0.00/0.0/…/.. 43 W VEC1 N/A RMY 51
2/11 43/31/37/+10/0.00/0.0/…/.. 41 WNW VEC1 N/A RMY 46
2/12 The low since midnight is 28F, the daily normal low is 19F
DAILY RECORDS
02/03/2023: NEW RECORD MINIMUM TEMPERATURE OF -11F,
THIS BEATS THE OLD RECORD OF -7F SET IN 1955
02/04/2023: NEW RECORD MINIMUM TEMPERATURE OF -14F,
THIS BEATS THE OLD RECORD OF -4F SET IN 1886 AND 1908
02/10/2023: NEW RECORD MAXIMUM TEMPERATURE OF 60F,
THIS BEATS THE OLD RECORD OF 56 SET IN 1909
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR FEBRUARY 12
HIGH 59F IN 2022
LOW -14F IN 1914
PRECIP 4.85 INCHES IN 1886 [RECORD FOR MONTH]
SNOWFALL 15.0 INCHES IN 2006
PEAK GUST 70 MPH E IN 1985
RECORDS FOR FEBRUARY 13
HIGH 64F IN 1951
LOW -10F IN 1967
PRECIP 2.80 INCHES IN 2008
SNOWFALL 9.0 INCHES IN 1899
PEAK GUST 60 MPH SE IN 1972
TODAY’S REPORT PREPARED BY: Matt Douglas
