Thursday, March 16, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, MARCH 16, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0555E
SUNSET: 1752E
DIMINISHING WIND AND MILDER TEMPS WITH A MIX OF SUN AND CLOUDS…
A mix of sun and clouds has been the theme today with seasonably
mild temperatures this afternoon. The air is rather dry today
with the dew point in the upper teens to around 20F. This, along
with the breeze, has added a decided chill to the air despite the
milder air temperature in the mid 40s.
The wind has been gusty, but with a diminishing trend as the day
progresses. Gusts early this morning were still approaching 30mph,
but down to only around 20mph this afternoon. The average speed
for the day so far is around 14mph, which is considerably lower
than yesterday.
Visibility is excellent today with views of around 70 miles being
the rule.
The high so far today is 46F, which is 2 degrees above the normal
maximum of 44F. The low temperature since midnight is 29F, which
is 2 degrees above the normal low of 27F.
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Today’s Observations:
7 A.M.
Weather: Scattered cirrostratus, thin broken cirrus,
few stratocumulus offshore distant NE-ESE
Temperature: 32F; Dew Point: 18F; Relative Humidity: 56%
Wind: NW @ 14G24 kts, peak wind NW 30mph at 6:42 A.M.
Sea-level pressure: 1013.7 mb; 29.94 in. Hg: rising, then more rapidly
Visibility: 70 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 180 SCT E250 -BKN 70 137/32/18/3114G24/994/ FEW SC OFFSHR
DSNT NE-ESE PK WND 3126/42/ 8/508 4/002 53020 10032 20029
10 A.M.
Weather: Thin broken cirrus, few altocumulus/lenticularis all quads
Temperature: 42F; Dew Point: 16F; Relative Humidity: 34%
Wind: NW @ 14G21 kts, peak wind NW 30mph at 9:11 A.M.
Sea-level pressure: 1014.0 mb; 29.94 in. Hg: rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E250 -BKN 70 140/42/16/3114G21/994/ FEW AC/ACSL ALQDS
PK WND 3126/11/ 8/041 50003
1 P.M.
Weather: Scattered altocumulus, thin broken cirrus
Temperature: 44F; Dew Point: 20F; Relative Humidity: 38%
Wind: WNW @ 9G17 kts
Sea-level pressure: 1011.8 mb; 29.88 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 46F
6-hr Min temp: 32F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 1 ins.
BHO SA 1755 150 SCT E250 -BKN 70 118/44/20/2909G17/988/ 8/051 4/001
58022 10046 20032
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SUMMARY FOR WEDNESDAY, MARCH 15, 2023
TEMPERATURE (DEGREES F)
MAX…….39 NORMAL…..44
MIN…….30 NORMAL…..26
MEAN……35 NORMAL…..35
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..0
TOTAL DEPARTURE FOR THE MONTH…………………+35 [+2.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………30 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………..443 DEPARTURE…….-36
TOTAL HEATING UNITS FOR THE SEASON…………4163 DEPARTURE……-748
TOTAL HEATING UNITS LAST SEASON TO DATE…….4508 DEPARTURE……-345
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 NNW @ 2:11 P.M.
VECTOR #1 (1-Sec)……….49 NNW @ 12:13 P.M.
VECTOR #2 (1-Sec)……….51 NNW @ 2:10 P.M.
DAVIS #1……………….45 NW @ 1:05 P.M.
DAVIS #2 ………………44 N @ 3:57 P.M.
RMY #1 (Instantaneous)…..53 NW @ 2:50 P.M.
RMY #2 (Instantaneous)…..54 NNW @ 2:10 P.M.
MERLIN…………………43 NW
RICHARDS (C5C) (Inst)……50 @ 12:13 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………34 NNW @ 1:06 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..32 @ 2:12 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..32 @ 2:12 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………32 NW @ 2:12 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………31 N @ 2:12 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..31 NNW @ 2:12 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..31 NNW @ 2:12 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………31 @ 2:12 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….21.5 NNW [515 total miles]
VECTOR #1……………..20.0
VECTOR #2……………..20.4
DAVIS #1………………20.0 NW
DAVIS #2………………19.9 NNW
RMY #1………………..19.3 NNW
RMY #2………………..19.9 NNW
RICHARDS (C5C)…………19.8
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..5.01 DEPARTURE…..+2.41
TOTAL PRECIPITATION FOR THE YEAR…………..13.66 DEPARTURE…..+2.56
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH……………….10.6 DEPARTURE……+1.7
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……34.9 DEPARTURE…..-25.9
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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/+4/0.00/0.0/425/63 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/194/28 32 N VEC1 34 N RMY 34
3/9 47/32/40/+7/0.00/0.0/473/68 28 NW VEC1 28 NW RMY 29
3/10 49/27/38/+4/T/0.0/616/88 18 W VEC1 18 SE RMY 17
3/11 36/29/33/-1/0.14/T/000/00 32 NE VEC1 34 NE RMY 34
3/12 41/28/35/+1/0.00/0.0/571/81 26 NNE VEC1 26 NNE RMY 27
3/13 41/32/37/+3/0.52/0.0/000/00 29 E VEC1 31 E RMY 33
3/14 39/31/35/0/3.18/6.9/000/00 51 NNE VEC1 52 NNE RMY 55
3/15 39/30/35/0/0.00/0.0/…/.. 46 NNW VEC1 49 NNW RMY 53
3/16 The low since midnight is 29F, the daily normal low is 27F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 16
HIGH 73 IN 1990
LOW 8 IN 1932
PRE 1.95 INS. IN 1900
SNOW 10.0 INS. IN 1896
WIND 79 MPH NE IN 1956
RECORDS FOR MARCH 17
HIGH 69 IN 2003
LOW 6 IN 1885
PRECIP 1.97 INS. IN 1968
SNOWFALL 6.5 INS. IN 1956
PEAK GUST 70 MPH SSW IN 1973
TODAY’S REPORT PREPARED BY: Matt Douglas
