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Saturday, March 15, 2025

March 16, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SATURDAY, MARCH 15, 2025 ALL TIMES ARE…

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

SATURDAY, MARCH 15, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0556E
SUNSET:  1751E

MORNING CLOUDS AND FOG BURN OFF LEAVING US WITH MAINLY SUNNY SKIES
AND MILD TEMPERATURES….

We spent a good part of the morning in the clouds/dense fog limiting
our view to less than 1/4 of a mile. By the late morning hours, the
fog lifted and the stratus clouds began to burn off. Now we have a
pretty nice day in progress early this afternoon with plenty of sun
and very decent temperatures, especially for March standards.

Temperatures have warmed into the upper 50s early this afternoon
which is once again well above seasonal levels for today’s date.
Dew point readings have been in the 40s most of the day indicating
a decent amount of moisture in the air relative to the air
temperature.

Winds have been fairly steady out of the south and south-southwest
today. The average speed is around 12mph for the day so far. The peak
gust so far today is 28mph, which occurred just before 2pm.

As mentioned, visibility was limited early this morning, but improved
nicely as the fog and low clouds burned off. The view was under 1/4 of
a mile early this morning, but has improved to around 50-60 miles by
early this afternoon.

The maximum temperature for today is 59F degrees, which is 16 degrees
above the normal high of 43F. The minimum temperature since midnight
is 37F degrees, which is 11 degrees above the normal low of 26F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Sky obscured, vertical visibility 200ft
Temperature: 39F; Dew Point: 39F; Relative Humidity: 100%
Wind: S @ 8 ktst
Sea-level pressure: 1022.4 mb; 30.19 in. Hg: rising, then more slowly
Visibility: 1/8 mile, fog
6-hr Max temp: 39F
6-hr Min temp: 37F
24-hr Precip:  0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 X W2 1/8 F 224/39/39/1908/019/ 8//// 51013 10039 20037

10 A.M.
Weather: Overcast stratus
Temperature: 45F; Dew Point: 42F; Relative Humidity: 92%
Wind: S @ 10G17 kts
Sea-level pressure: 1022.3 mb; 30.19 in. Hg: rising, then falling
Visibility: 20 miles, thin fog
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E8 OVC 20 223/45/42/1910G17/019/ THN F ALQDS/ 8/6// 58001

1 P.M.
Weather: Thin scattered cirrus, few stratocumulus distant ESE-S-SW
Temperature: 59F; Dew Point: 43F; Relative Humidity: 54%
Wind: SSW @ 14G20 kts
Sea-level pressure: 1020.7 mb; 30.14 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 59F
6-hr Min temp: 39F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 250 -SCT 60 207/59/43/2014G20/014/ FEW SC DSNT ESE-S-SW/
8/501 58016 10059 20039

————————————————————–

SUMMARY FOR FRIDAY, MARCH 14, 2025

TEMPERATURE (DEGREES F)
MAX…….54   NORMAL…..43
MIN…….33   NORMAL…..26
MEAN……44   NORMAL…..35

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+9
TOTAL DEPARTURE FOR THE MONTH…………………….+65 [+4.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….21  DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH……………383  DEPARTURE…….-66
TOTAL HEATING UNITS FOR THE SEASON………….4564  DEPARTURE……-317
TOTAL HEATING UNITS LAST SEASON TO DATE……..4220  DEPARTURE……+344

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)………..22 SSW  @   11:58 P.M.
VECTOR #1 (1-Sec)……….22 SSW  @   11:58 P.M.
VECTOR #2 (1-Sec)……….20 SSW  @   11:58 P.M.
DAVIS #1……………….22 S    @   11:56 P.M.
DAVIS #2 ………………23 S    @   10:01 P.M.
RMY #1 (Instantaneous)…..22 SSW  @   11:58 P.M.
RMY #2 (Instantaneous)…..21 SSW  @   11:58 P.M.
MERLIN…………………20 SSW
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 SSW  @   11:20 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15      @   11:59 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16      @   11:59 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 S    @   11:45 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S    @   10:01 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 SSW  @   11:45 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 SSW  @   11:59 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………7.6 ENE [182 total miles] VECTOR #1……………….7.9
VECTOR #2……………….8.4
DAVIS #1………………..8.0 ESE
DAVIS #2………………..8.1 ESE
RMY #1………………….7.8 E
RMY #2………………….8.3 ENE
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..1.18 DEPARTURE…..-1.25
TOTAL PRECIPITATION FOR THE YEAR (2025)……..6.83 DEPARTURE…..-4.10

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.6
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-8.3
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-26.1

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR MARCH 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

3/1    50/21/36/+5/T/T/081/12            46 NW  VEC1 46 NW  RMY 49
3/2    28/14/21/-11/0.00/0.0/672/99      41 NW  VEC1 42 NW  RMY 43
3/3    31/8/20/-12/0.00/0.0/667/98       28 NW  VEC1 28 NW  RMY 31
3/4    48/23/36/+4/0.00/0.0/390/57       41 SW  VEC1 42 SW  RMY 43
3/5    54/41/48/+16/0.52/0.0/021/03      50 SSW VEC1 50 SSW RMY 55
3/6    55/32/44/+11/0.66/T/014/02        69 S   VEC1 69 S   RMY 68
3/7    41/25/33/0/T/T/638/92             60 WNW VEC1 61 WNW RMY 64
3/8    40/27/34/+1/0.00/0.0/619/89       55 W   VEC1 55 W   RMY 58
3/9    45/25/35/+2/0.00/0.0/544/78       40 W   VEC1 39 W   RMY 42
3/10   60/33/47/+13/0.00/0.0/680/97      38 WNW VEC1 38 WNW RMY 39
3/11   62/37/50/+16/0.00/0.0/676/96      39 SSW VEC1 40 SSW RMY 40
3/12   48/32/40/+6/T/T/544/77            29 N   VEC1 29 N   RMY 29
3/13   46/32/39/+5/0.00/0.0/483/68       25 ESE VEC1 26 ESE RMY 25
3/14   54/33/44/+9/0.00/0.0/570/80       22 SSW VEC1 22 SSW RMY 22

3/15 The low since midnight is 37F, the daily normal low is 26F.

————————————————————–

MARCH DAILY RECORDS TO DATE

NONE.

————————————————————–

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR MARCH 15
HIGH 80 IN 1990
LOW 6 IN 1993
PRE 2.86 INS. IN 2010
SNOW 12.0 INS. 1967
WIND 73e MPH ESE IN 1940

RECORDS FOR MARCH 16
HIGH 73 IN 1990
LOW 8 IN 1932
PRE 1.95 INS. IN 1900
SNOW 10.0 INS. IN 1896
WIND 79 MPH NE IN 1956

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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