Saturday, March 11, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, MARCH 11, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0603E
SUNSET: 1746E
SNOWY DAY WITH GUSTY WIND…
In contrast to yesterday’s clear visibility and high pressure,
today has been snowy with low visibility and lower pressure with
a maximum visibility of about 30 miles mid-morning. Currently,
visibility is a minimal 1/8th of a mile with the top of the WGBH
tower hardly visible.
The high so far today is 36F which was the temperature throughout
most of the early morning, which is 6 degrees below the normal
maximum of 42F. The low temperature so far today was 32F, which
is 7 degrees above the normal low of 25F.
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Today’s Observations:
7 A.M.
Weather: Light snow, overcast stratus fractus
Temperature: 35F; Dew Point: 35F; Relative Humidity: 100%
Wind: NE @ 13 kts
Sea-level pressure: 1007.2 mb; 29.74 in. Hg: rising unsteadily
Visibility: 20 miles
6-hr Max temp: 36F
6-hr Min temp: 34F
24-hr Precip: 0.05 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: Trace
BHO SA 1155 E30 OVC 20S- 072/35/35/0513/974/ 8/7// 4/000 52010
70005 10036 20034
10 A.M.
Weather: Light snow, overcast stratus fractus
Temperature: 34F; Dew Point: 32F; Relative Humidity: 90%
Wind: NE @ 11G28 kts
Sea-level pressure: 1007.7 mb; 29.76 in. Hg: rising, then more slowly
Visibility: 10 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E10 OVC 10S- 077/34/32/0411G28/976/ 8/7// 4/000 51005
70000
1 P.M.
Weather: Light snow, fog
Temperature: 32F; Dew Point: 32F; Relative Humidity: 100%
Wind: NNE @ 11 kts
Sea-level pressure: 1007.7 mb; 29.76 in. Hg: rising then falling
Visibility: 1/8 mile
6-hr Max temp: 35F
6-hr Min temp: 32F
6-hr Precip: 0.01 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: Trace
BHO SA 1755 X W3 1/8S-F 077/32/32/0311/976/ 8//// 4/000 50000 6001/ 10035
20032
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SUMMARY FOR FRIDAY, MARCH 10, 2023
TEMPERATURE (DEGREES F)
MAX…….49 NORMAL…..42
MIN…….27 NORMAL…..25
MEAN……38 NORMAL…..34
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+4
TOTAL DEPARTURE FOR THE MONTH…………………+32 [+3.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………27 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..293 DEPARTURE…….-33
TOTAL HEATING UNITS FOR THE SEASON…………4013 DEPARTURE……-745
TOTAL HEATING UNITS LAST SEASON TO DATE…….4376 DEPARTURE……-363
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
420C, Contacting, Merlin and Richards are all Main Tower.
420C (Official)…………18 W @ 12:42 P.M.
VECTOR #1 (1-Sec)……….18 SE @ 6:55 P.M.
VECTOR #2 (1-Sec)……….17 SE @ 5:34 P.M.
DAVIS #1……………….17 WSW @ 12:42 P.M.
DAVIS #2 ………………17 ESE @ 5:15 P.M.
RMY #1 (Instantaneous)…..17 W @ 12:42 P.M.
RMY #2 (Instantaneous)…..17 SE @ 5:34 P.M.
MERLIN………………….M M
RICHARDS (C5C) (Inst)……17 @ 12:42 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………12 SSE @ 7:04 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..13 @ 5:22 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13 @ 5:14 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 ESE @ 5:17 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………13 SE @ 7:06 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 ESE @ 5:17 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..13 SE @ 7:06 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………13 @ 5:17 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….6.9 NNW [165 total miles]
VECTOR #1……………..7.4
VECTOR #2……………..7.7
DAVIS #1………………7.3 NW
DAVIS #2………………7.3 NNW
RMY #1………………..7.3 NW
RMY #2………………..7.6 NW
RICHARDS (C5C)…………7.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.05 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..1.19 DEPARTURE…..-0.56
TOTAL PRECIPITATION FOR THE YEAR……………9.84 DEPARTURE…..-0.41
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..3.4 DEPARTURE……-2.8
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……27.7 DEPARTURE…..-30.4
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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 47/32/40/+7/0.00/0.0/…/.. 28 NW VEC1 28 NW RMY 29
3/10 49/27/38/+4/0.05/0.0/…/.. 18 W VEC1 18 SE RMY 17
3/11 The low since midnight is 34F, 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 11
HIGH 71 IN 2021
LOW 4 IN 1939, 1960
PRECIP 2.11 INS. IN 1901
SNOWFALL 6.3 INS. IN 1934
PEAK GUST 66e MPH W IN 1980
RECORDS FOR MARCH 12
HIGH 72 IN 2012
LOW 2 IN 1885
PRECIP 2.87 INS. IN 1888
SNOWFALL 9.7 INS. IN 1959
PEAK GUST 66 MPH SE IN 1962
TODAY’S REPORT PREPARED BY: Samantha Richard
