Thursday, March 9, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, MARCH 9, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0607E
SUNSET: 1743E
A MIX OF SUN AND CLOUDS, BUT MORE SUNSHINE THAN PRIOR DAYS…
Clouds dominated this morning, but have broken significantly
early this afternoon to allow for a decent amount of sunshine.
Temperatures are responding nicely with readings reaching
the upper 40s. With much lighter winds than the last few days,
it actually feels quite nice out there today.
As mentioned, the wind is much lighter today with an average
speed for the day so far around 12mph, with a decreasing trend.
We had some gusts this morning over 20mph, but they have come
down as we move into the afternoon hours.
Visibility has been excellent with views of 70-80 miles all
day.
The high so far today is 47F, which is 5 degrees above the normal
maximum of 42F. The low since midnight is 32F, which is 7 degrees
above the normal low of 25F.
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Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus, few breaks in overcast all quadrants
Temperature: 32F; Dew Point: 25F; Relative Humidity: 73%
Wind: NNW @ 12G17 kts
Sea-level pressure: 1019.4 mb; 30.10 in. Hg: steady, then rising
Visibility: 70 miles
6-hr Max temp: 34F
6-hr Min temp: 32F
24-hr Precip: Trace
24-hr Snowfall: Trace
Snow Depth: 1 ins.
BHO SA 1155 E40 OVC 70 194/32/25/3312G17/010/ FEW BINOVC ALQDS/
8/5// 4/001 53004 70000 10034 20032
10 A.M.
Weather: Thin broken cirrus, few stratocumulus distant all quadrants
Temperature: 40F; Dew Point: 26F; Relative Humidity: 56%
Wind: NNW @ 10G16 kts
Sea-level pressure: 1019.5 mb; 30.11 in. Hg: rising, then steady
Visibility: 80 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E250 -BKN 80 195/40/26/3410G16/011/ FEW SC DSNT
ALQDS/ 8/501 51001
1 P.M.
Weather: Scattered stratocumulus, scattered altocumulus,
thin scattered cirrus, few stratocumulus lenticularis
Temperature: 46F; Dew Point: 26F; Relative Humidity: 46%
Wind: NNW @ 9G17 kts
Sea-level pressure: 1018.8 mb; 30.09 in. Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 47F
6-hr Min temp: 32F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: Trace
BHO SA 1755 50 SCT 120 SCT 250 -SCT 80 188/46/26/3409G17/009/
FEW SCSL ALQDS 8/551 4/000 58007 10047 20032
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SUMMARY FOR WEDNESDAY, MARCH 8, 2023
TEMPERATURE (DEGREES F)
MAX…….44 NORMAL…..42
MIN…….26 NORMAL…..24
MEAN……35 NORMAL…..33
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+2
TOTAL DEPARTURE FOR THE MONTH…………………+21 [+2.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………30 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH…………..241 DEPARTURE…….-22
TOTAL HEATING UNITS FOR THE SEASON…………3961 DEPARTURE……-734
TOTAL HEATING UNITS LAST SEASON TO DATE…….4318 DEPARTURE……-357
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
420C, Contacting, Merlin and Richards are all Main Tower.
420C (Official)…………32 N @ 10:51 A.M.
VECTOR #1 (1-Sec)……….34 N @ 10:50 A.M.
VECTOR #2 (1-Sec)……….35 N @ 11:09 A.M.
DAVIS #1……………….32 NNW @ 10:02 A.M.
DAVIS #2 ………………32 N @ 10:02 A.M.
RMY #1 (Instantaneous)…..34 NNW @ 10:01 A.M.
RMY #2 (Instantaneous)…..36 N @ 11:09 A.M.
MERLIN…………………32 N
RICHARDS (C5C) (Inst)……34 @ 10:01 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 NNW @ 6:56 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22 @ 10:51 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 @ 10:02 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 NW @ 6:54 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 N @ 10:02 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..22 NNW @ 7:08 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 NNW @ 10:02 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………22 @ 7:08 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……14.7 NNW [353 total miles]
VECTOR #1…………….14.2
VECTOR #2…………….14.5
DAVIS #1……………..14.4 NNW
DAVIS #2……………..14.4 N
RMY #1……………….13.8 NNW
RMY #2……………….14.2 NNW
RICHARDS (C5C)………..14.4
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..1.14 DEPARTURE…..-0.24
TOTAL PRECIPITATION FOR THE YEAR……………9.79 DEPARTURE…..-0.09
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..3.4 DEPARTURE……-1.6
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……27.7 DEPARTURE…..-29.2
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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/…/.. 32 N VEC1 34 N RMY 34
3/9 The low since midnight is 32, the daily normal low is 25F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 9
HIGH 75 IN 2016
LOW 1 IN 2007
PRECIP 2.67 INS. IN 1998
SNOWFALL 6.3 INS. IN 2001
PEAK GUST 102e MPH S IN 1942 [RECORD FOR MONTH]
RECORDS FOR MARCH 10
HIGH 69 IN 1977
LOW 2 IN 1984
PRECIP 2.00 INS. IN 1994
SNOWFALL 5.5 INS. IN 1918
PEAK GUST 80 MPH NW IN 1974
TODAY’S REPORT PREPARED BY: Matt Douglas
