Friday, February 28, 2025

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

FRIDAY, FEBRUARY 28, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0621E
SUNSET:  1733E

ANOTHER BLUSTERY DAY, PLENTY OF SUNSHINE AND WARMER TEMPERATURES
TO START THE WEEKEND….

The system that moved through yesterday only netted us an additional
0.01 inches of rain after the observation shift, giving us a daily total
of 0.06 inches of liquid precipitation and 0.1 inches of snow. We are
still at a deficit for the month at -0.54 inches of rain and -4.5 inches
of snow.

Cold air advection moved in behind yesterday’s storm, bringing cold, dry
air and therefore the temperatures have been slow to warm. Though we
started this morning just 5 degrees from our normal daily max, we have
only warmed about 10F more since then. With the added windy conditions,
the wind chill has kept us from feeling the warmth of the seasonable
temperatures.

Winds were steady out of the west for much of the morning, and then a
shift to the west-northwest during the mid-morning came with an increase
in speed. So far for the day we are averaging around 15mph with gusts over
30mph at times. The peak gust so far for the day is 41mph, which occurred
during the 9am hour.

Visibility was hindered this morning by clouds along the horizon, but
have since improved and we have had around 60 miles throughout the day.

The maximum temperature for today is 45F degrees, which is 5 degrees
above the normal high of 40F. The minimum temperature since midnight
is 34F degrees, which is 12 degrees above the normal low of 22F.

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Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus NE-E-ESE, few cirrus S-W-NNW
Temperature: 35F; Dew Point: 33F; Relative Humidity: 80%
Wind: W @ 12G19 kts
Sea-level pressure: 1000.6 mb; 29.55 in. Hg: steady, then rising
Visibility: 30 miles
6-hr Max temp: 38F
6-hr Min temp: 34F
24-hr Precip:  0.02 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 30 006/35/30/2712G19/955/ FEW SC NE-E-ESE
FEW CI S-W-NNW/ 8/501 53011 70002 10038 20034

10 A.M.
Weather: Scattered stratocumulus, scattered cirrus
Temperature: 43F; Dew Point: 25F; Relative Humidity: 49%
Wind: WNW @ 19G32 kts, peak wind WNW 41mph at 9:18 A.M.
Sea-level pressure: 1000.8 mb; 29.55 in. Hg: rising, then falling
Visibility: 15 miles, thin fog
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 45 SCT 250 SCT 60 008/43/36/2919G32/955/ PK WND 2836/18/
8/501 50002

1 P.M.
Weather: Clear, few stratocumulus all quadrants
Temperature: 44F; Dew Point: 18F; Relative Humidity: 36%
Wind: WNW @ 13G26 kts, peak wind WNW 30mph at 12:17 P.M.
Sea-level pressure: 1002.0 mb; 29.56 in. Hg: rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 45F
6-hr Min temp: 35F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 CLR 60 020/44/18/3013G26/956/ FEW SC ALQDS PK WND 3029/17/
8/500 51012 10045 20035

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SUMMARY FOR THURSDAY, FEBRUARY 27, 2025

TEMPERATURE (DEGREES F)
MAX…….49   NORMAL…..40
MIN…….33   NORMAL…..22
MEAN……41   NORMAL…..31

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………….+10
TOTAL DEPARTURE FOR THE MONTH…………………….-17 [-0.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….24  DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH…………..1012  DEPARTURE…….+17
TOTAL HEATING UNITS FOR THE SEASON………….4155  DEPARTURE……-243
TOTAL HEATING UNITS LAST SEASON TO DATE……..3832  DEPARTURE……+323

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated

F420C (Official)………..36 WNW  @   11:27 P.M.
VECTOR #1 (1-Sec)……….36 WNW  @   11:27 P.M.
VECTOR #2 (1-Sec)……….38 WNW  @   11:30 P.M.
DAVIS #1……………….36 W    @   11:27 P.M.
DAVIS #2 ………………39 S    @   10:55 A.M.
RMY #1 (Instantaneous)…..35 WNW  @   11:27 P.M.
RMY #2 (Instantaneous)…..38 WNW  @   11:30 P.M.
MERLIN…………………32 SW
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………26 WNW  @   11:32 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..24      @   11:24 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..28      @   11:32 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………26 WNW  @   11:24 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 WNW  @   11:32 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..24 SW   @   04:23 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..28 WNW  @   11:32 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..13.6 SW  [327 total miles] VECTOR #1………………13.5
VECTOR #2………………14.3
DAVIS #1……………….13.3 SSW
DAVIS #2……………….14.0 SSW
RMY #1…………………13.3 SSW
RMY #2…………………14.3 SSW
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..3.30 DEPARTURE…..-0.54
TOTAL PRECIPITATION FOR THE YEAR (2025)……..5.65 DEPARTURE…..-2.69

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH……………….13.1 DEPARTURE……-4.5
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-17.2

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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    32/10/21/-5/0.07/0.4/000/00        35 NNW VEC1 34 NNW RMY 35
2/2    24/5/15/-11/0.10/1.0/260/43        22 SE  VEC1 25 SE  RMY 24
2/3    42/24/33/+7/0.05/0.5/321/53        35 SSW VEC1 35 SSW RMY 35
2/4    41/20/31/+5/0.00/0.0/542/89        51 NW  VEC1 51 NW  RMY 55
2/5    27/14/21/-6/0.00/0.0/562/92        32 NW  VEC1 32 NW  RMY 32
2/6    32/16/24/-3/0.22/1.0/000/00        26 SE  VEC1 28 SE  RMY 25
2/7    38/22/30/+3/0.00/0.0/542/88        48 WNW VEC1 49 WNW RMY 50
2/8    35/19/27/0/0.09/1.1/433/70         23 W   VEC1 22 W   RMY 23
2/9    29/23/26/-1/0.30/3.0/006/01        24 N   VEC1 24 N   RMY 24
2/10   33/19/26/-1/0.00/0.0/343/55        26 WNW VEC1 27 NW  RMY 28
2/11   30/14/22/-5/0.00/0.0/232/37        23 WSW VEC1 22 WSW RMY 23
2/12   32/24/28/0/0.04/0.4/006/01         29 ENE VEC1 29 ENE RMY 28
2/13   38/28/33/+5/0.42/0.7/000/00        52 WNW VEC1 52 WNW RMY 55
2/14   32/20/26/-2/0.00/0.0/634/100       50 NW  VEC1 50 NW  RMY 54
2/15   28/15/22/-6/0.29/3.3/108/17        20 ESE VEC1 20 ESE RMY 18
2/16   35/22/29/+1/1.66/1.6/000/00        45 W   VEC1 45 W   RMY 48 TSTM
2/17   28/16/22/-7/T/T/597/93             70 WNW VEC1 68 WNW RMY 72
2/18   25/13/19/-10/0.00/0.0/645/100      51 WNW VEC1 52 WNW RMY 54
2/19   30/12/21/-8/0.00/0.0/635/98        33 WNW VEC1 33 WNW RMY 34
2/20   29/11/20/-9/T/T/046/07             26 NW  VEC1 27 NW  RMY 27
2/21   33/17/25/-4/0.00/0.0/470/72        38 NW  VEC1 39 NW  RMY 40
2/22   35/13/24/-6/0.00/0.0/505/77        30 NW  VEC1 30 NW  RMY 33
2/23   42/25/34/+4/0.00/0.0/395/60        30 WNW VEC1 31 WNW RMY 28
2/24   45/25/35/+5/0.00/0.0/449/68        33 SSW VEC1 34 SSW RMY 35
2/25   55/35/45/+15/T/0.0/153/23          31 SSW VEC1 31 SSW RMY 32
2/26   51/35/43/+12/0.00/0.0/620/93       31 NW  VEC1 31 WNW RMY 33
2/27   49/33/41/+10/0.06/0.1/…/..       36 WNW VEC1 36 WNW RMY 35

2/28 The low since midnight is 34F, 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 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

RECORDS FOR MARCH 1
HIGH 62 IN 1972
LOW -3 IN 1886
PRECIP 1.65 INS. IN 1900
SNOWFALL 9.4 INS. IN 1949
PEAK GUST 78 WSW IN 1966

TODAY’S REPORT PREPARED BY: Amanda Joly