Tuesday, February 27, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, FEBRUARY 27, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0623E
SUNSET: 1731E
QUITE MILD TODAY WITH A MIX OF SUN AND CLOUDS HERE AT BLUE HILL…
We started the morning with an undercast being observed as the
lower areas were being impacted by fog. Meanwhile here on the
summit we had plenty of sunshine under only some scattered high
thin cirrus clouds. The undercast did eventually lift, allowing
the fog to overtake the Hill for a time during the mid morning
hours before finally burning off. Sunshine has mainly been the
theme otherwise, although some mid level clouds are starting to
move in early this afternoon. Also a fog bank is being observed
right along the shore-line to the north-northeast and east. It’s
very spring-like in many ways today.
Temperatures have reached the upper 50s early this afternoon as a
well above normal air mass continues to infiltrate the region.
The dew point has reached the low to mid 40s, so the moisture
content of the air has increased markedly since yesterday.
The wind has been fairly steady today out of the south. The
average speed for the day so far has been around 9mph. The peak
gust thus far is around 20mph, which occurred just after 10am
this morning.
Visibility has been limited today thanks to the fog this morning,
and then general haziness this afternoon. The view was only 10-15
miles this morning, and has only improved to around 35 miles
early this afternoon.
The maximum temperature so far today is 57F degrees, which is 17
degrees above the normal high of 40F. The minimum temperature since
midnight is 29F degrees, which is 7 degrees above the normal low
of 22F.
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Today’s Observations:
7 A.M.
Weather: Sky partially obscured, undercast, thin scattered cirrus,
fog drifting over summit
Temperature: 30F; Dew Point: 30F; Relative Humidity: 100%
Wind: S @ 8 kts
Sea-level pressure: 1020.2 mb; 30.13 in. Hg: rising unsteadily
Visibility: 10 miles, occasionally lower
6-hr Max temp: 39F
6-hr Min temp: 29F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 -X ///OVC 250 -SCT 10 202/30/30/1908/013/ UNDERCAST ALQDS
F DRFTG OVR SMT VSBY OCCLY LWR/ 8/601 52007 10039 20029
10 A.M.
Weather: Thin scattered cirrus, few stratus fractus distant all quadrants,
few stratocumulus distant all quadrants
Temperature: 39F; Dew Point: 36F; Relative Humidity: 87%
Wind: S @ 8 kts
Sea-level pressure: 1020.5 mb; 30.14 in. Hg: rising, then steady
Visibility: 15 miles, thin fog
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 250 -SCT 15 205/39/36/1908/014/ FEW STFRA DSNT ALQDS
FEW SC DSNT ALQDS THN F ALQDS/ 8/701 51003
1 P.M.
Weather: Scattered altocumulus, thin scattered cirrus, fog bank along
shore distant NNE-E
Temperature: 56F; Dew Point: 43F; Relative Humidity: 61%
Wind: S @ 9 kts
Sea-level pressure: 1017.8 mb; 30.06 in. Hg: falling, then more rapidly
Visibility: 35 miles, hazy
6-hr Max temp: 57F
6-hr Min temp: 30F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 150 SCT 250 -SCT 35 178/56/43/1709/006/ F BNK ALNG SHR
DSNT NNE-E HAZY/ 8/651 58027 10057 20030
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SUMMARY FOR MONDAY, FEBRUARY 26, 2024
TEMPERATURE (DEGREES F)
MAX…….54 NORMAL…..39
MIN…….26 NORMAL…..22
MEAN……40 NORMAL…..31
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………+9
TOTAL DEPARTURE FOR THE MONTH………………….+114 [+4.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………25 DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH…………..847 DEPARTURE……-114
TOTAL HEATING UNITS FOR THE SEASON…………3813 DEPARTURE……-551
TOTAL HEATING UNITS LAST SEASON TO DATE…….3648 DEPARTURE……+165
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)……….E31 SW @ 04:53 A.M.
VECTOR #1 (1-Sec)……….32 SW @ 04:52 A.M.
VECTOR #2 (1-Sec)……….32 WSW @ 03:23 P.M.
DAVIS #1……………….31 SW @ 05:06 A.M.
DAVIS #2 ………………32 SW @ 04:52 A.M.
RMY #1 (Instantaneous)…..33 SW @ 04:52 A.M.
RMY #2 (Instantaneous)…..34 SSW @ 03:58 A.M.
MERLIN…………………31 SW
RICHARDS (C5C) (Inst)……30 @ 03:26 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………25 SSW @ 04:56 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23 @ 04:56 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 @ 04:56 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 SSW @ 04:56 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 WSW @ 03:25 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 SSW @ 04:56 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 SSW @ 04:19 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………20 @ 04:20 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……14.2 SW [341 total miles]
VECTOR #1…………….14.2
VECTOR #2…………….14.5
DAVIS #1……………..13.8 SW
DAVIS #2……………..14.5 SW
RMY #1……………….14.1 SW
RMY #2……………….14.6 SW
RICHARDS (C5C)………..13.2
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.80 DEPARTURE…..-2.88
TOTAL PRECIPITATION FOR THE YEAR (2024)…….10.04 DEPARTURE…..+1.86
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………..4.7 DEPARTURE…..-12.3
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……25.6 DEPARTURE…..-25.1
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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 38/18/28/0/0.03/0.4/527/83 37 SW VEC1 36 SW RMY 37
2/16 37/26/32/+4/T/T/599/94 50 WNW VEC1 47 WNW RMY 51
2/17 33/21/27/-2/T/T/128/20 36 WNW VEC1 38 WNW RMY 38
2/18 35/17/26/-3/0.00/0.0/418/65 39 SW VEC1 40 SW RMY 41
2/19 36/21/29/0/0.00/0.0/639/99 29 WNW VEC1 29 WNW RMY 28
2/20 36/16/26/-3/0.00/0.0/648/100 22 N VEC1 22 N RMY 21
2/21 39/24/32/+3/0.00/0.0/553/85 23 ESE VEC1 23 ESE RMY 22
2/22 42/24/33/+3/T/0.0/…/.. 26 SSW VEC1 26 SSW RMY 25
2/23 41/33/37/+7/0.07/0.0/…/.. 25 SSW VEC1 26 SSW RMY 27
2/24 37/17/27/-3/0.00/0.0/…/.. 28 NW VEC1 29 NNW RMY 29
2/25 37/11/24/-6/0.00/0.0/…/.. 26 SSW VEC1 26 NW RMY 27
2/26 54/26/40/+9/0.00/0.0/…/.. 31 SE VEC1 32 SW RMY 33
2/27 The low since midnight is 29F, the daily normal low is 22F
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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 27
HIGH 61F IN 1976
LOW -8F IN 1900
PRECIP 1.43 INCHES IN 2013
SNOWFALL 6.0 INCHES IN 1922
PEAK GUST 67 MPH W IN 1985
RECORDS FOR FEBRUARY 28
HIGH 62F IN 1976
LOW -2F IN 1907,1934
PRECIP 1.79 INCHES IN 1958
SNOWFALL 8.5 INCHES IN 2005
PEAK GUST 88e MPH SSW IN 1943
TODAY’S REPORT PREPARED BY: Matt Douglas
