Tuesday, March 14, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, MARCH 14, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0558E
SUNSET: 1749E
POWERFUL NOR’EASTER BRINGING COPIOUS AMOUNTS OF PRECIPITATION
AND STRONG WINDS…
The storm that started innocently yesterday afternoon, continues
today with much more fanfare. The amount of precipitation that
has fallen is quite bountiful, with a storm total through 1pm EST
of 3.10″. Most of this has fallen as rain. Snow started mixing in
between 9-10am this morning, and finally switched to all snow
between 11am-12pm. By the 1pm observation today, 0.9″ of snow
had accumulated on the snowboards.
The temperature, which was holding in the upper 30s through the
night right up until the late morning hours, has now dropped
to around freezing with the snow falling.
Winds have been gusty all day, but are really starting to ramp
up this afternoon as the low pressure gets captured by an upper
low and begins to back in toward the coast. Gusts of 45-50mph
have occurred early this afternoon with an increasing trend.
We’ll see just how high the winds get when they peak during the
evening hours.
The high so far today is 39, which is 4 degrees below the normal
maximum of 43F. The low temperature since midnight is 32F, which
is 6 degrees above the normal low of 26F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft, moderate rain
Temperature: 39F; Dew Point: 39F; Relative Humidity: 100%
Wind: E @ 21G37 kts, peak wind E 43mph at 6:49 A.M.
Sea-level pressure: 999.0 mb; 29.50 in. Hg: falling, then more slowly
Visibility: 1/4 mile, fog
6-hr Max temp: 39F
6-hr Min temp: 38F
24-hr Precip: 1.94 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 X W2 1/4RF 990/39/39/0821G37/950/ PK WND 0837/49/
8//// 56023 6118/ 70194 10039 20038
10 A.M.
Weather: Sky obscured, vertical visibility 200ft, rain and snow
Temperature: 38F; Dew Point: 38F; Relative Humidity: 100%
Wind: NE @ 16G29 kts, peak wind NE 36mph at 9:33 A.M.
Sea-level pressure: 995.3 mb; 29.39 in. Hg: falling, then more rapidly
Visibility: 1/4 mile, fog
3-hr Precip: 0.65 ins.
3-hr Snowfall: Trace
BHO SA 1455 X W2 1/4RSF 953/38/38/0516G29/939/ PK WND 0531/33/
NEW SNW PST 3 HRS TRACE/ 8//// 58037 6065/
1 P.M.
Weather: Sky obscured, vertical visibility 200ft, moderate snow
Temperature: 32F; Dew Point: 32F; Relative Humidity: 100%
Wind: NE @ 20G34 kts, peak wind NW 44mph at 11:56 A.M.
Sea-level pressure: 991.2 mb; 29.27 in. Hg: falling, then more rapidly
Visibility: 1/8 mile, fog
6-hr Max temp: 39F
6-hr Min temp: 32F
6-hr Precip: 1.16 ins.
6-hr Snowfall: 0.9 ins.
Snow Depth: 1 ins.
BHO SA 1755 X W2 1/8SF 912/32/32/0420G34/927/ PK WND 0438/56/
NEW SNW PST 6 HRS 0.9 INS/ 8//// 4/001 58041 6116/ 10039 20032
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SUMMARY FOR MONDAY, MARCH 13, 2023
TEMPERATURE (DEGREES F)
MAX…….41 NORMAL…..43
MIN…….32 NORMAL…..26
MEAN……37 NORMAL…..34
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+3
TOTAL DEPARTURE FOR THE MONTH…………………+35 [+2.5 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…………..383 DEPARTURE…….-36
TOTAL HEATING UNITS FOR THE SEASON…………4103 DEPARTURE……-748
TOTAL HEATING UNITS LAST SEASON TO DATE…….4468 DEPARTURE……-365
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
420C, Contacting, Merlin and Richards are all Main Tower.
420C (Official)…………29 E @ 11:33 P.M.
VECTOR #1 (1-Sec)……….31 E @ 11:33 P.M.
VECTOR #2 (1-Sec)……….30 E @ 11:36 P.M.
DAVIS #1……………….30 E @ 11:33 P.M.
DAVIS #2 ………………29 E @ 11:31 P.M.
RMY #1 (Instantaneous)…..33 E @ 11:37 P.M.
RMY #2 (Instantaneous)…..30 E @ 11:31 P.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……28 @ 11:33 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 E @ 11:38 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 @ 11:37 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 @ 11:37 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………24 E @ 11:37 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 E @ 11:38 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 E @ 11:37 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 E @ 11:37 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………22 @ 11:37 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….10.2 E [245 total miles]
VECTOR #1…………….. 9.6
VECTOR #2……………..10.5
DAVIS #1………………10.2 ESE
DAVIS #2………………10.5 ESE
RMY #1………………..10.1 E
RMY #2………………..10.4 ESE
RICHARDS (C5C)…………10.6
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..1.94 DEPARTURE…..+1.77
TOTAL PRECIPITATION FOR THE MONTH…………..3.22 DEPARTURE…..+0.96
TOTAL PRECIPITATION FOR THE YEAR…………..11.87 DEPARTURE…..+1.11
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH………………..3.4 DEPARTURE……-4.4
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……27.7 DEPARTURE…..-32.0
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR MARCH 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
3/1 43/27/35/+4/0.00/0.0/425/63 20 NW VEC1 21 SE RMY 21
3/2 40/34/37/+5/0.31/0.0/000/00 35 NW VEC1 36 NW RMY 39
3/3 44/29/37/+5/0.01/0.1/462/68 33 NW VEC1 34 NW RMY 36
3/4 33/28/31/-1/0.82/3.3/000/00 48 E VEC1 49 NE RMY 52
3/5 41/25/33/+1/0.00/0.0/240/35 35 NW VEC1 36 NW RMY 37
3/6 46/31/39/+6/0.00/0.0/571/83 46 WNW VEC1 48 NW RMY 51
3/7 38/26/32/-1/T/T/387/56 41 NW VEC1 42 NW RMY 46
3/8 44/26/35/+2/T/T/…/.. 32 N VEC1 34 N RMY 34
3/9 47/32/40/+7/0.00/0.0/…/.. 28 NW VEC1 28 NW RMY 29
3/10 49/27/38/+4/0.00/0.0/…/.. 18 W VEC1 18 SE RMY 17
3/11 36/29/33/-1/0.14/0.0/…/.. 32 NE VEC1 34 NE RMY 34
3/12 41/28/35/+1/0.00/0.0/…/.. 26 NNE VEC1 26 NNE RMY 27
3/13 41/32/37/+3/0.52/0.0/…/.. 29 E VEC1 31 E RMY 33
3/14 The low since midnight is 32F, the daily normal low is 26F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 14
HIGH 74 IN 1946
LOW 7 IN 1896
PRECIP 4.95 INS. IN 2010
SNOWFALL 7.3 INS. IN 2017
PEAK GUST 67 MPH ENE IN 2010
RECORDS FOR MARCH 15
HIGH 80 IN 1990
LOW 6 IN 1993
PRE 2.86 INS. IN 2010
SNOW 12.0 INS. 1967
WIND 73e MPH ESE IN 1940
TODAY’S REPORT PREPARED BY: Matt Douglas
