Wednesday, March 26, 2025

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

WEDNESDAY, MARCH 26, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0537E
SUNSET:  1804E

MORE CLOUDS THAN SUN WITH SLIGHTLY ABOVE SEASONAL TEMPERATURES….

Today has featured a lot of cloud cover, mainly of the mid and
high variety, however some “higher” ceiling low clouds, in the
form of stratocumulus have developed as we reached the afternoon
hours. Virga has been observed as well early this afternoon, but
no precipitation has reached the ground.

Temperatures have finally reached the low 50s by the mid afternoon
hours, which is quite pleasant for this time of year. The dew
point however has generally remained in the 20s which is adding
a bit of a chill to the air, especially with the lack of sunshine.

Winds have been generally on the light side today with variable
directions. The average speed for the day so far is around 6mph.
The peak gust so far is 19mph, which occurred just after the 1pm
observation.

Visibility has been excellent all day despite the overcast sky.
The view reached 80 miles early this morning, but slipped to around
70 for the balance of the day.

The maximum temperature for today is 50F degrees, which is 3 degrees
above the normal high of 47F. The minimum temperature since midnight
is 36F degrees, which is 6 degrees above the normal low of 30F.

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Today’s Observations:

7 A.M.
Weather: Broken altocumulus/castellanus, broken cirrus, few lower
altocumulus castellanus distant ESE
Temperature: 39F; Dew Point: 26F; Relative Humidity: 60%
Wind: NW @ 6 kts, wind light
Sea-level pressure: 1016.2 mb; 30.01 in. Hg: falling, then rising
Visibility: 80 miles
6-hr Max temp: 39F
6-hr Min temp: 36F
24-hr Precip:  0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E90 BKN 250 BKN 80 162/39/26/3206/001/ FEW LWR ACC DSNT ESE
THN K LYR ALNG HRZN DSNT NNE-NE/ 8/081 55004 10039 20036

10 A.M.
Weather: Broken altocumulus/altostratus, overcast cirrostratus,
few stratocumulus distant SE-SSE and distant WNW-N
Temperature: 45F; Dew Point: 28F; Relative Humidity: 50%
Wind: W @ 2 kts, wind light and variable
Sea-level pressure: 1016.5 mb; 30.02 in. Hg: rising, then falling
Visibility: 70 miles
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E85 BKN 200 OVC 70 165/45/28/2602/002/ FEW SC DSNT DSNT
SE-SSE AND DSNT WNW-N WND L/V/ 8/577 50003

1 P.M.
Weather: Broken stratocumulus, broken nimbostratus, overcast cirrostratus,
few breaks in overcast distant SE and distant WNW-NNW, virga all quadrants
Temperature: 48F; Dew Point: 29F; Relative Humidity: 46%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1014.9 mb; 29.97 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 49F
6-hr Min temp: 39F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E55 BKN 80 BKN 200 OVC 70 149/48/29/2806/997/ FEW BINOVC
DSNT SE AND DSNT WNW-NNW VIRGA ALQDS WND LGT/ 8/527 58016 10049 20039

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SUMMARY FOR TUESDAY, MARCH 25, 2025

TEMPERATURE (DEGREES F)
MAX…….53   NORMAL…..47
MIN…….33   NORMAL…..30
MEAN……43   NORMAL…..38

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+5
TOTAL DEPARTURE FOR THE MONTH……………………+148 [+5.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….22  DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE MONTH……………612  DEPARTURE……-150
TOTAL HEATING UNITS FOR THE SEASON………….4793  DEPARTURE……-401
TOTAL HEATING UNITS LAST SEASON TO DATE……..4512  DEPARTURE……+281

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)………..32 WSW  @   11:36 A.M.
VECTOR #1 (1-Sec)……….33 WSW  @   11:35 A.M.
VECTOR #2 (1-Sec)……….33 WSW  @   11:35 A.M.
DAVIS #1……………….32 WSW  @   11:36 A.M.
DAVIS #2 ………………32 WSW  @   11:35 A.M.
RMY #1 (Instantaneous)…..34 WSW  @   11:35 A.M.
RMY #2 (Instantaneous)…..35 WSW  @   11:35 A.M.
MERLIN…………………32 W
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………22 W    @   09:27 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22      @   09:29 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23      @   09:27 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………24 W    @   09:28 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 W    @   09:27 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 W    @   09:26 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 W    @   09:26 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.1 W [219 total miles] VECTOR #1……………….9.4
VECTOR #2……………….9.7
DAVIS #1………………..9.5 WNW
DAVIS #2………………..9.4 WNW
RMY #1………………….9.1 WNW
RMY #2………………….9.6 WNW
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..4.53 DEPARTURE…..+0.06
TOTAL PRECIPITATION FOR THE YEAR (2025)…….10.18 DEPARTURE…..-2.79

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.3
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE…..-13.2
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-31.0

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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   59/37/48/+13/0.00/0.0/358/50      28 S   VEC1 28 S   RMY 28
3/16   67/44/56/+21/0.05/0.0/136/19      56 SSW VEC1 58 SSW RMY 58
3/17   58/38/48/+12/2.12/0.0/000/00      60 SSW VEC1 60 SSW RMY 60
3/18   48/34/41/+5/0.00/0.0/362/50       31 NNW VEC1 31 NNW RMY 32
3/19   52/34/43/+7/0.00/0.0/662/91       18 NE  VEC1 18 NE  RMY 17
3/20   55/36/46/+9/0.03/0.0/…/..       30 S   VEC1 30 S   RMY 30
3/21   46/36/41/+4/0.36/0.0/…/..       48 NW  VEC1 49 NW  RMY 54
3/22   62/33/48/+11/T/0.0/…/..         53 WNW VEC1 52 WNW RMY 58
3/23   44/25/35/-3/0.00/0.0/…/..       39 WNW VEC1 39 NW  RMY 40
3/24   43/31/37/-1/0.79/0.0/…/..       35 S   VEC1 35 S   RMY 36
3/25   53/33/43/+5/0.00/0.0/…/..       32 WSW VEC1 33 WSW RMY 34

3/26 The low since midnight is 36F, the daily normal low is 30F.

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MARCH DAILY RECORDS TO DATE

3/16 RECORD HIGH MINIMUM TEMP OF 44F;
OLD RECORD WAS 43F IN 1921, 1973

3/17 RECORD PRECIPITATION AMOUNT OF 2.12 INS;
OLD RECORD WAS 1.97 INS IN 1968

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

RECORDS FOR MARCH 26
HIGH 76 IN 1922, 1949
LOW 6 IN 1960
PRECIP 1.99 INS. IN 1988
SNOWFALL 5.4 INS. IN 2001
PEAK GUST 63 MPH S IN 1970

RECORDS FOR MARCH 27
HIGH 78 IN 1998
LOW 12 IN 1975
PRECIP 1.05 INS. IN 1913
SNOWFALL 6.6 INS. IN 1959
PEAK GUST 62 MPH NW IN 1965, SE IN 1992

TODAY’S REPORT PREPARED BY: Matt Douglas