Saturday, February 17, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, FEBRUARY 17, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0638E
SUNSET: 1719E
MOOD SNOW THIS MORNING GIVES WAY TO A FEW PEEKS OF AFTERNOON SUNSHINE….
Periods of very light snow have been the main event today as a storm
system passed by to our south. Despite only accumulating to a trace,
the falling flurries have been enough to create a peaceful,
wintry feel out there. By early afternoon, the overcast has broken,
allowing for some occasional sunshine. However, virga seen to our west
at the 1pm observation suggests we may not be done with the snow today
quite yet.
Temperatures today began in the mid 20s, and have slowly risen into the
lower 30s, which is a bit below average for this time of year. The dew
point has remained in the low 20s.
After being quite strong during the day yesterday, the winds slowed
dramatically through the overnight and into this morning. Our average
speed so far is 5mph, mostly out of the west, though direction
has been quite variable due to the light speeds. Our peak gust to this
point is about 14 mph, occurring just before the 1pm observation.
Visibility has varied throughout the day due to the light snow and virga,
but the best it has been to this point is 30 miles.
The maximum temperature so far today is 32F degrees, which is 5
degrees below the normal high of 37F. The minimum temperature
since midnight is 24F degrees, which is 4 degrees above the normal
low of 20F.
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Today’s Observations:
7 A.M.
Weather: Overcast altocumulus/altostratus, few breaks in overcast
distant NNE-NE, few stratocumulus distant WNW-N-ESE,
light snow ending 6:02am, virga distant SE-S-WSW
Temperature: 24F; Dew Point: 22F; Relative Humidity: 90%
Wind: WSW @ 4 kts, wind light
Sea-level pressure: 1008.8 mb; 29.79 in. Hg: falling, then rising
Visibility: 30 miles
6-hr Max temp: 27F
6-hr Min temp: 24F
24-hr Precip: Trace
24-hr Snowfall: Trace
Snow Depth: 3 inches
BHO SA 1155 E95 OVC 30 088/24/22/2504/979/ FEW BINOVC DSNT NNE-NE
FEW SC DSNT WNW-N-ESE S-E02 VIRGA DSNT SE-S-WSW WND LGT TOTAL NEW SNW
PST 24 HRS TRACE/ 8/57/ 4/003 55014 6000/ 70000 10027 20024
10 A.M.
Weather: Overcast altostratus, few stratocumulus all quadrants,
light snow ending 9:45am
Temperature: 26F; Dew Point: 22F; Relative Humidity: 87%
Wind: W @ 3 kts, wind light
Sea-level pressure: 1007.2 mb; 29.74 in. Hg: falling, then more rapidly
Visibility: 30 miles
3-hr Precip: Trace
3-hr Snowfall: Trace
BHO SA 1455 E70 OVC 30 072/26/22/2703/974/ FEW SC ALQDS S-E45 WND LGT
TOTAL NEW SNW PAST 3 HRS TRACE/ 8/52/ 58016 6000/
1 P.M.
Weather: Broken stratocumulus, virga distant SSW-W-NW
Temperature: 32F; Dew Point: 22F; Relative Humidity: 72%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1004.7 mb; 29.67 in. Hg: falling, then more rapidly
Visibility: 30 miles
6-hr Max temp: 32F
6-hr Min temp: 24F
6-hr Precip: Trace
6-hr Snowfall: Trace
Snow Depth: 3 inches
BHO SA 1755 E20 BKN 30 047/30/22/2806/967/ VIRGA DSNT SSW-W-NW
WND LGT TOTAL NEW SNW PAST 6 HRS TRACE/ 8/500 4/003 58025 6000/
10032 20024
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SUMMARY FOR FRIDAY, FEBRUARY 16, 2024
TEMPERATURE (DEGREES F)
MAX…….37 NORMAL…..37
MIN…….26 NORMAL…..20
MEAN……32 NORMAL…..28
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………+4
TOTAL DEPARTURE FOR THE MONTH………………….+109 [+6.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………33 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………..498 DEPARTURE……-108
TOTAL HEATING UNITS FOR THE SEASON…………3464 DEPARTURE……-546
TOTAL HEATING UNITS LAST SEASON TO DATE…….3320 DEPARTURE……+144
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E50 WNW @ 10:35 A.M.
VECTOR #1 (1-Sec)……….47 WNW @ 10:35 A.M.
VECTOR #2 (1-Sec)……….54 WNW @ 07:35 A.M.
DAVIS #1……………….48 W @ 07:35 A.M.
DAVIS #2 ………………51 W @ 07:35 A.M.
RMY #1 (Instantaneous)…..51 WNW @ 08:58 A.M.
RMY #2 (Instantaneous)…..60 WNW @ 07:35 A.M.
MERLIN…………………44 WNW
RICHARDS (C5C) (Inst)……49 @ 10:35 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………34 WNW @ 07:37 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..34 @ 07:36 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..34 @ 07:36 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………35 W @ 07:36 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………34 WNW @ 07:36 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..32 WNW @ 07:36 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..33 WNW @ 07:36 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………34 @ 07:36 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……17.1 NW [411 total miles]
VECTOR #1…………….16.2
VECTOR #2…………….17.6
DAVIS #1……………..17.0 WNW
DAVIS #2……………..17.3 WNW
RMY #1……………….15.7 WNW
RMY #2……………….17.1 WNW
RICHARDS (C5C)………..16.3
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..0.73 DEPARTURE…..-1.43
TOTAL PRECIPITATION FOR THE YEAR (2024)……..9.97 DEPARTURE…..+3.31
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………..4.7 DEPARTURE……-5.9
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……25.6 DEPARTURE…..-18.7
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PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
2/1 40/30/35/+9/0.00/0.0/012/02 25 SW VEC1 24 SW RMY 26
2/2 39/31/35/+9/0.03/T/000/00 23 N VEC1 24 N RMY 25
2/3 35/26/31/+5/0.00/0.0/338/56 26 N VEC1 26 NNW RMY 28
2/4 39/20/30/+4/0.00/0.0/607/100 28 NNW VEC1 28 NNW RMY 27
2/5 39/22/31/+4/0.00/0.0/597/98 29 N VEC1 29 N RMY 30
2/6 35/26/31/+4/0.00/0.0/251/41 26 N VEC1 26 N RMY 26
2/7 39/26/33/+6/0.00/0.0/436/71 21 NE VEC1 21 NE RMY 24
2/8 44/29/37/+10/0.00/0.0/457/74 16 S VEC1 16 S RMY 16
2/9 47/30/39/+12/0.00/0.0/229/37 31 SSW VEC1 31 SSW RMY 31
2/10 58/35/47/+20/0.02/0.0/385/62 26 NW VEC1 26 NW RMY 30
2/11 45/34/40/+13/0.00/0.0/119/19 30 NW VEC1 30 NW RMY 31
2/12 47/29/38/+10/0.00/0.0/470/75 21 N VEC1 20 N RMY 20
2/13 35/25/30/+2/0.65/4.3/000/00 40 NNE VEC1 41 NNE RMY M
2/14 29/21/25/-3/0.00/0.0/562/89 53 NW VEC1 53 NW RMY 54
2/15 38/18/28/0/0.03/0.4/…/.. 37 SW VEC1 36 SW RMY 37
2/16 37/26/32/+4/0.00/0.0/…/.. 50 WNW VEC1 47 WNW RMY 51
2/17 The low since midnight is 24F, the daily normal low is 20F
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FEBRUARY DAILY RECORDS TO DATE
NONE…
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR FEBRUARY 17
HIGH 61F IN 1981
LOW -16F IN 1896
PRECIP 1.86 INCHES IN 2003
SNOWFALL 20.0 INCHES IN 2003
PEAK GUST 72 MPH NW IN 1968
RECORDS FOR FEBRUARY 18
HIGH 65F IN 1981
LOW -10F IN 1958
PRECIP 1.97 INCHES IN 1887, IN 1952
SNOWFALL 9.2 INCHES IN 1952
PEAK GUST 70 MPH S IN 2008
TODAY’S REPORT PREPARED BY: Joshua Polen
