Tuesday, March 7, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, MARCH 7, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0610E
SUNSET: 1741E
A MIX OF CLOUDS AND SUN TODAY, A BIT COLDER, AND STILL BRISK…
Varying amounts of sunshine and cloud cover has been the theme
today with spokes of moisture pinwheeling around the large ocean
storm lurking near Nova Scotia. A brisk north-northwesterly wind
is also continuing, thanks in part to this low pressure system
keeping a pressure gradient over the region.
The air is a bit colder today than it was yesterday, as the storm
is also responsible for transporting a colder air mass down from
northeast Canada. Temperatures have only made it to the mid 30s,
but with the wind, it feels more like the mid to upper 20s!
The wind has been quite gusty out of a northwest to north-
northwest direction. The average speed for the day so far is
around 13mph. Frequent gusts over 20mph have been occurring with
a peak so far of 30mph.
Visibility has been excellent with views of around 70-80 miles all
day. We can see the snow covered top of Mt. Monadnock in SW New
Hampshire pretty clearly!
The high so far today is 38F, which is 3 degrees below the normal
maximum of 41F. The low since midnight is 29F, which is 5 degrees
above the normal low of 24F.
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Today’s Observations:
7 A.M.
Weather: Broken altocumulus, broken cirrus, few stratocumulus
offshore distant NE-SE
Temperature: 29F; Dew Point: 14F; Relative Humidity: 53%
Wind: NW @ 9 kts
Sea-level pressure: 1005.4 mb; 29.69 in. Hg: falling, then more slowly
Visibility: 80 miles
6-hr Max temp: 32F
6-hr Min temp: 29F
24-hr Precip: 0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 2 ins.
BHO SA 1155 E140 BKN 250 BKN 80 054/29/14/3209/969/
FEW SC OFFSHR DSNT NE-SE/ 8/574 4/002 56004 10032 20029
10 A.M.
Weather: Scattered altocumulus, scattered cirrostratus,
few stratocumulus offshore distant NNE-SE
Temperature: 35F; Dew Point: 18F; Relative Humidity: 49%
Wind: NW @ 14G20 kts
Sea-level pressure: 1005.0 mb; 29.68 in. Hg: falling, then steady
Visibility: 80 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 120 SCT 250 SCT 80 050/35/18/3214G20/968/
FEW SC OFFSHR DSNT NNE-SE/ 8/575 56004
1 P.M.
Weather: Scattered stratocumulus, broken altocumulus, broken cirrus
Temperature: 37F; Dew Point: 20F; Relative Humidity: 51%
Wind: NW @ 13G21 kts
Sea-level pressure: 1005.0 mb; 29.68 in. Hg: rising, then falling
Visibility: 70 miles
6-hr Max temp: 38F
6-hr Min temp: 29F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 2 ins.
BHO SA 1755 40 SCT E130 BKN 250 BKN 70 050/37/20/3213G21/968/
8/575 4/002 50000 10038 20029
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SUMMARY FOR MONDAY, MARCH 6, 2023
TEMPERATURE (DEGREES F)
MAX…….46 NORMAL…..41
MIN…….31 NORMAL…..24
MEAN……39 NORMAL…..33
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+6
TOTAL DEPARTURE FOR THE MONTH…………………+20 [+3.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………26 DEPARTURE……..-7
TOTAL HEATING UNITS FOR THE MONTH…………..178 DEPARTURE…….-21
TOTAL HEATING UNITS FOR THE SEASON…………3898 DEPARTURE……-733
TOTAL HEATING UNITS LAST SEASON TO DATE…….4282 DEPARTURE……-384
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
420C, Contacting, Merlin and Richards are all Main Tower.
420C (Official)…………46 WNW @ 3:37 P.M.
VECTOR #1 (1-Sec)……….48 NW @ 3:40 P.M.
VECTOR #2 (1-Sec)……….52 NW @ 3:41 P.M.
DAVIS #1……………….47 WNW @ 3:37 P.M.
DAVIS #2 ………………46 WNW @ 3:12 P.M.
RMY #1 (Instantaneous)…..51 WNW @ 3:34 P.M.
RMY #2 (Instantaneous)…..55 NW @ 3:41 P.M.
MERLIN…………………44 NW
RICHARDS (C5C) (Inst)……48 @ 3:34 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………38 NW @ 2:57 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..32 @ 3:35 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..36 @ 3:35 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………34 WNW @ 3:35 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………35 NW @ 3:35 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..32 WNW @ 3:35 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..35 NW @ 3:35 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………32 @ 3:35 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……17.3 NW [416 total miles]
VECTOR #1…………….16.2
VECTOR #2…………….18.3
DAVIS #1……………..17.0 WNW
DAVIS #2……………..18.0 NW
RMY #1……………….15.7 NW
RMY #2……………….17.8 NW
RICHARDS (C5C)………..16.7
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..1.14 DEPARTURE…..+0.11
TOTAL PRECIPITATION FOR THE YEAR……………9.79 DEPARTURE…..+0.26
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……-0.4
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……27.7 DEPARTURE…..-28.0
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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/…/.. 20 NW VEC1 21 SE RMY 21
3/2 40/34/37/+5/0.31/0.0/…/.. 35 NW VEC1 36 NW RMY 39
3/3 44/29/37/+5/0.01/0.1/…/.. 33 NW VEC1 34 NW RMY 36
3/4 33/28/31/-1/0.82/3.3/…/.. 48 E VEC1 49 NE RMY 52
3/5 41/25/33/+1/0.00/0.0/…/.. 35 NW VEC1 36 NW RMY 37
3/6 46/31/39/+6/0.00/0.0/…/.. 46 WNW VEC1 48 NW RMY 51
3/7 The low since midnight is 29, the daily normal low is 24F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 7
HIGH 66 IN 1946
LOW -1 IN 1890
PRECIP 2.05 INS. IN 1967
SNOWFALL 11.5 INS. IN 2013
PEAK GUST 66 MPH NE IN 1962
RECORDS FOR MARCH 8
HIGH 66 IN 2012
LOW 2 IN 1986
PRECIP 2.20 INS. IN 2008
SNOWFALL 18.0 INS. IN 2013
PEAK GUST 69 MPH SSW IN 2008
TODAY’S REPORT PREPARED BY: Matt Douglas
