Tuesday, February 28, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, FEBRUARY 28, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0622E
SUNSET: 1733E
PERIODS OF MAINLY LIGHT SNOW CONTINUE ON THE HILL THIS AFTERNOON…
Snow began flying just after midnight last night and has continued
at varying intensities since. 1.9″ of snow was measured up to 7am
this morning, melting down to 0.15″ of liquid. This means the snow
was a bit fluffy overnight, thanks in large part to temperatures
being in the 20s. As the morning has progressed however, the
temperature has risen into the lower 30s. As such, the snow has
become much wetter in nature.
Another 1.2″ of snow has fallen between 7am and 1pm, bringing the
storm total thus far to 3.1″. Total liquid so far is 0.27″. We
shall see how much, if any, additional snow accumulation we get
through the remainder of this afternoon and into this evening.
The wind became gusty for a time this morning as an easterly low-
level jet pushed over the area. Gusts of around 30mph was observed.
However, the wind has relaxed a bit early this afternoon with speeds
generally 10-15mph, occasionally gusting to 20-25mph.
Visibility has of course been limited all day in snow and fog,
staying below 4 miles.
The high so far today is 33F, which is 7 degrees below the normal
maximum of 40F. The low since midnight is 25F degrees, which is
3 degrees above the normal minimum of 22F.
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Today’s Observations:
7 A.M.
Weather: Overcast stratus, light snow
Temperature: 30F; Dew Point: 30F; Relative Humidity: 100%
Wind: E @ 15G21 kts
Sea-level pressure: 1008.8 mb; 29.79 in. Hg: falling, then more slowly
Visibility: 1 mile, fog
6-hr Max temp: 30F
6-hr Min temp: 25F
24-hr Precip: 0.15 ins.
24-hr Snowfall: 1.9 ins.
Snow Depth: 4 ins.
BHO SA 1155 E8 OVC 1S-F 088/30/30/1015G21/979/ NEW SNW PST
24 HRS 1.9 INS/ 8/6// 4/004 56004 6014/ 70015 10030 20025
10 A.M.
Weather: Overcast stratus, light snow
Temperature: 31F; Dew Point: 31F; Relative Humidity: 100%
Wind: E @ 13G21 kts
Sea-level pressure: 1008.9mb; 29.79 in. Hg: rising, then falling
Visibility: 2 miles, fog
3-hr Precip: 0.03 ins.
3-hr Snowfall: 0.3 ins.
BHO SA 1455 E10 OVC 2S-F 089/31/31/1013G21/979/ NEW SNW PST
3 HRS 0.3 INS/ 8/6// 50001 6003/
1 P.M.
Weather: Overcast stratus, light snow
Temperature: 33F; Dew Point: 33F; Relative Humidity: 100%
Wind: E @ 11 kts
Sea-level pressure: 1008.6 mb; 29.78 in. Hg: rising, then falling
Visibility: 2 miles, fog
6-hr Max temp: 33F
6-hr Min temp: 30F
6-hr Precip: 0.12 ins.
6-hr Snowfall: 1.2 ins.
Snow Depth: 5 ins.
BHO SA 1755 E8 OVC 2S-F 086/33/33/0911/978/ NEW SNW PST 6 HRS
1.2 INS/ 8/6// 4/005 58003 6012/ 10033 20030
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SUMMARY FOR MONDAY, FEBRUARY 27, 2023
TEMPERATURE (DEGREES F)
MAX…….33 NORMAL…..40
MIN…….22 NORMAL…..22
MEAN……28 NORMAL…..31
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………-3
TOTAL DEPARTURE FOR THE MONTH……………….+133 [+4.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………37 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH…………..862 DEPARTURE……-133
TOTAL HEATING UNITS FOR THE SEASON…………3685 DEPARTURE……-713
TOTAL HEATING UNITS LAST SEASON TO DATE…….4039 DEPARTURE……-354
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
420C, Contacting, Merlin and Richards are all Main Tower.
420C (Official)…………22 NNW @ 9:21 A.M.
VECTOR #1 (1-Sec)……….23 ESE @ 10:32 P.M.
VECTOR #2 (1-Sec)……….25 NNW @ 8:27 A.M.
DAVIS #1……………….22 ESE @ 10:32 P.M.
DAVIS #2 ………………22 N @ 8:27 A.M.
RMY #1 (Instantaneous)…..25 NNW @ 8:23 A.M.
RMY #2 (Instantaneous)…..24 NNW @ 8:27 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……23 @ 8:23 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 ESE @ 10:33 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 10:33 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 9:06 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 ESE @ 10:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 ESE @ 9:06 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 ESE @ 10:33 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 ESE @ 9:06 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17 @ 10:33 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…… 8.4 NNW [202 total miles]
VECTOR #1……………. 8.5
VECTOR #2……………. 8.8
DAVIS #1…………….. 8.5 NE
DAVIS #2…………….. 8.7 ENE
RMY #1………………. 8.5 NE
RMY #2………………. 8.7 NE
RICHARDS (C5C)……….. 9.2
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.15 DEPARTURE…..-0.01
TOTAL PRECIPITATION FOR THE MONTH…………..1.61 DEPARTURE…..-2.23
TOTAL PRECIPITATION FOR THE YEAR……………8.40 DEPARTURE…..+0.06
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..1.9 DEPARTURE……+1.3
TOTAL SNOWFALL FOR THE MONTH………………..8.0 DEPARTURE……-9.6
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……22.9 DEPARTURE…..-28.4
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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/+12/0.00/0.0/413/67 30 NW VEC1 N/A RMY 34
2/9 49/33/41/+14/T/0.0/149/24 31 SSE VEC1 N/A RMY 32
2/10 60/31/46/+19/0.00/0.0/603/97 43 W VEC1 N/A RMY 51
2/11 43/31/37/+10/0.00/0.0/625/100 41 WNW VEC1 N/A RMY 46
2/12 48/28/38/+10/0.00/0.0/339/54 22 SW VEC1 N/A RMY 24
2/13 42/33/38/+10/0.00/0.0/069/11 28 NE VEC1 N/A RMY 36
2/14 50/34/42/+14/0.00/0.0/475/75 30 NW VEC1 33 NW RMY 35
2/15 56/35/46/+18/0.00/0.0/279/44 39 SSW VEC1 44 SSW RMY 49
2/16 61/50/56/+28/T/0.0/108/17 29 W VEC1 31 W RMY 34
2/17 56/23/40/+11/0.06/0.1/000/00 44 NNW VEC1 46 NNW RMY 46
2/18 39/19/29/0/0.00/0.0/643/100 41 NW VEC1 42 NNW RMY 47
2/19 44/30/37/+8/0.00/0.0/129/20 32 S VEC1 35 S RMY 36
2/20 59/41/50/+21/0.00/0.0/208/32 35 W VEC1 36 W RMY 40
2/21 41/31/36/+7/0.22/1.4/000/00 26 W VEC1 27 W RMY 27
2/22 42/30/36/+6/0.23/0.5/…/.. 33 WNW VEC1 35 WNW RMY 36
2/23 32/25/29/-1/0.91/3.5/…/.. 29 NNW VEC1 M M RMY 21
2/24 33/16/25/-5/0.01/T/…/.. 39 NW VEC1 M M RMY 47
2/25 19/9/14/-16/0.02/0.5/…/.. 17 NNW VEC1 19 NNW RMY 19
2/26 35/16/26/-5/T/T/…/.. 22 NNE VEC1 23 W RMY 24
2/27 33/22/28/-3/0.00/0.0/…/.. 22 NNW VEC1 23 ESE RMY 25
2/28 The low since midnight is 25, the daily normal low is 22F
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 56F SET IN 1909
02/16/2023: NEW RECORD HIGH MINIMUM TEMPERATURE OF 50F,
THIS BEATS THE OLD RECORD OF 41F SET IN 1976. THIS ALSO
TIES THE WARMEST MINIMUM TEMPERATURE FOR FEBRUARY SET
IN 2018
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR FEBRUARY 28
HIGH 62F IN 1976
LOW -2F IN 1907,1934
PRECIP 1.79 INCHES IN 1958
SNOWFALL 8.5 INCHES IN 2005
PEAK GUST 88e MPH SSW IN 1943
RECORDS FOR MARCH 1
HIGH 62 IN 1972
LOW -3 IN 1886
PRECIP 1.65 INS. IN 1900
SNOWFALL 9.4 INS. IN 1949
PEAK GUST 78 WSW IN 1966
TODAY’S REPORT PREPARED BY: Matt Douglas
