Monday, February 26, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

MONDAY, FEBRUARY 26, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0625E
SUNSET:  1730E

MORNING CLOUDS MOVE OUT LEAVING US WITH A SUNNY AND MILD AFTERNOON…

Cloud cover, and even a few scattered rain and snow showers moved
through the region this morning as a warm front pushed through. But
none of the precipitation was observed here at the Hill. The clouds
and showers have since moved out of the area leaving us with a very
nice afternoon.

Temperatures have reached the low 50s early this afternoon as a
well above normal air mass moves in following the warm frontal
passage. The dew point has also risen from the mid-upper 20s early
this morning to the mid 30s by early this afternoon.

The wind has been a bit gusty out of the southwest helping to
usher in the warmer air. The average speed for the day so far
is around 16mph. The peak gust thus far is around 31mph, which
occurred just before 5am this morning.

Visibility has been somewhat limited today thanks in part to
the added moisture in the air (ie higher dew points). The view
has been only around 40-50 miles all day.

The maximum temperature so far today is 50F degrees, which is 11
degrees above the normal high of 39F. The minimum temperature since
midnight is 26F degrees, which is 4 degrees above the normal low
of 22F.

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Today’s Observations:

7 A.M.
Weather: Broken stratocumulus, broken altocumulus/altostratus,
overcast cirrostratus, few breaks in overcast distant S-W and
distant NW-N, virga NNE-E
Temperature: 31F; Dew Point: 27F; Relative Humidity: 85%
Wind: SW @ 13G18 kts
Sea-level pressure: 1016.9 mb; 30.03 in. Hg: falling, then rising
Visibility: 50 miles
6-hr Max temp: 31F
6-hr Min temp: 26F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E55 BKN 100 BKN 180 OVC 50 169/31/27/2213G18/003/
FEW BINOVC DSNT S-W AND DSNT NW-N VIRGA NNE-E/ 8/577 55003 10031 20026

10 A.M.
Weather: Scattered altocumulus/castellanus, broken cirrostratus,
broken cirrus
Temperature: 38F; Dew Point: 30F; Relative Humidity: 72%
Wind: SW @ 12G18 kts
Sea-level pressure: 1017.0 mb; 30.03 in. Hg: rising, then steady
Visibility: 40 miles, hazy
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 100 SCT 180 BKN 250 BKN 40 170/38/30/2212G18/003/ HAZY/
8/088 51001

1 P.M.
Weather: Clear, few altocumulus/castellanus distant ESE-S,
few cirrus all quadrants
Temperature: 49F; Dew Point: 34F; Relative Humidity: 56%
Wind: SSW @ 6 kts, wind light
Sea-level pressure: 1014.9 mb; 29.97 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 50F
6-hr Min temp: 31F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 40 149/49/34/2213G20/997/ FEW AC/ACC DSNT ESE-S
FEW CI ALQDS HAZY/ 8/081 58021 10050 20031

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SUMMARY FOR SUNDAY, FEBRUARY 25, 2024

TEMPERATURE (DEGREES F)
MAX…….37   NORMAL…..39
MIN…….11   NORMAL…..22
MEAN……24   NORMAL…..30

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………-6
TOTAL DEPARTURE FOR THE MONTH………………….+105 [+4.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………41  DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH…………..822  DEPARTURE……-104
TOTAL HEATING UNITS FOR THE SEASON…………3788  DEPARTURE……-542
TOTAL HEATING UNITS LAST SEASON TO DATE…….3609  DEPARTURE……+179

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)……….E26 SSW  @  10:43 P.M.
VECTOR #1 (1-Sec)……….26 NW   @  12:22 A.M.
VECTOR #2 (1-Sec)……….26 SSW  @  10:40 P.M.
DAVIS #1……………….28 S    @  07:26 P.M.
DAVIS #2 ………………30 S    @  07:20 P.M.
RMY #1 (Instantaneous)…..27 SSW  @  10:42 P.M.
RMY #2 (Instantaneous)…..28 SSW  @  10:40 P.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……26      @  10:17 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………22 SSW  @  09:32 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20      @  09:40 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20      @  09:40 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 S    @  09:31 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 S    @  07:27 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 SSW  @  09:39 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 SSW  @  09:40 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19      @  09:39 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….9.0 SSW [216 total miles] VECTOR #1……………..9.3
VECTOR #2……………..9.5
DAVIS #1………………9.1 WSW
DAVIS #2………………9.3 WSW
RMY #1………………..9.1 W
RMY #2………………..9.5 WSW
RICHARDS (C5C)…………9.5

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..0.80 DEPARTURE…..-2.73
TOTAL PRECIPITATION FOR THE YEAR (2024)…….10.04 DEPARTURE…..+2.01

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…..-11.7
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……25.6 DEPARTURE…..-24.5

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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 The low since midnight is 26F, 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 26
HIGH 67F IN 1957
LOW -7F IN 1928
PRECIP 2.24 INCHES IN 1979
SNOWFALL 11.1 INCHES IN 1933
PEAK GUST 66 MPH W IN 1961

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

TODAY’S REPORT PREPARED BY: Matt Douglas