Saturday, March 29, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, MARCH 29, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0531E
SUNSET: 1807E
DRIZZLE AND FALLING TEMPERATURES MAKE FOR A DREARY DAY….
Following the passage of a frontal boundary early this morning, cold air
continues to filter in from the northeast. Light rain associated with said
front left us with 0.06″ in the rain gauge. Around sunrise, the sun
made a brief appearance before being obscured by low clouds. Fog and drizzle
have been the theme since, the latter accumulating an additional 0.02″.
Temperatures were warmest around midnight, with a high of 48F. With
flow now out of the northeast, we have cooled off significantly, now
holding just above freezing at 33F.
The wind was light overnight, but has picked up a bit in recent hours.
The average speed so far is 12mph. The peak gust occurred at 5:42am,
with a speed of 37mph.
Visibility was best around sunrise, at 20 miles. Since then, low clouds
and fog have limited views to between 2-10 miles.
The maximum temperature for today is 48F degrees, which is equal to
the normal high of 48F. The minimum temperature since midnight
is 33F degrees, which is 2 degrees above the normal low of 31F.
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Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, scattered nimbostratus,
broken altocumulus/altostratus, broken cirrus
Temperature: 37F; Dew Point: 34F; Relative Humidity: 89%
Wind: ENE @ 16G24 kts, peak wind NE 32mph @ 6:40am
Sea-level pressure: 1014.3 mb; 29.95 in. Hg: falling, then rising
Visibility: 20 miles, virga distant W-N-ENE, thin fog all quadrants
6-hr Max temp: 48F
6-hr Min temp: 36F
24-hr Precip: 0.06 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 20 SCT 30 SCT E100 BKN 250 BKN 20 143/37/34/0616G24/995/
VIRGA DSNT W-N-ENE THN F ALQDS PK WND 0528/40/ 8/571 53007 70006 10048
20036
10 A.M.
Weather: Overcast stratus, light drizzle and fog
Temperature: 35F; Dew Point: 35F; Relative Humidity: 100%
Wind: ENE @ 11G20 kts
Sea-level pressure: 1017.7 mb; 30.05 in. Hg: rising unsteadily
Visibility: 2 miles, fog
3-hr Precip: Trace
3-hr Snowfall: 0.0 inches
BHO SA 1455 E5 OVC 2L-F 177/35/35/0611G20/005/ 8/6// 52034 6000/
1 P.M.
Weather: Overcast stratus, light drizzle
Temperature: 33F; Dew Point: 33F; Relative Humidity: 100%
Wind: ENE @ 9 kts
Sea-level pressure: 1019.4 mb; 30.10 in. Hg: rising unsteadily
Visibility: 10 miles, thin fog all quadrants
6-hr Max temp: 38F
6-hr Min temp: 33F
6-hr Precip: 0.02 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E8 OVC 10L- 194/33/33/0709/010/ THN F ALQDS/ 8/6// 52017 6002/
10038 20033
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SUMMARY FOR FRIDAY, MARCH 28, 2025
TEMPERATURE (DEGREES F)
MAX…….58 NORMAL…..48
MIN…….35 NORMAL…..31
MEAN……47 NORMAL…..39
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+8
TOTAL DEPARTURE FOR THE MONTH……………………+160 [+5.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….18 DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE MONTH……………678 DEPARTURE……-162
TOTAL HEATING UNITS FOR THE SEASON………….4859 DEPARTURE……-413
TOTAL HEATING UNITS LAST SEASON TO DATE……..4582 DEPARTURE……+277
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)………..38 WNW @ 08:42 A.M.
VECTOR #1 (1-Sec)……….37 WNW @ 08:39 A.M.
VECTOR #2 (1-Sec)……….41 WNW @ 08:06 A.M.
DAVIS #1……………….38 W @ 08:39 A.M.
DAVIS #2 ………………38 WNW @ 08:39 A.M.
RMY #1 (Instantaneous)…..40 WNW @ 08:40 A.M.
RMY #2 (Instantaneous)…..42 WNW @ 08:39 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………27 WNW @ 08:42 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..27 @ 08:41 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30 @ 08:41 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………29 W @ 08:41 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………31 WNW @ 08:41 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..26 WNW @ 08:41 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..30 WNW @ 08:41 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.7 WNW [304 total miles]
VECTOR #1………………12.5
VECTOR #2………………13.2
DAVIS #1……………….12.9 W
DAVIS #2……………….13.0 W
RMY #1…………………12.1 W
RMY #2…………………13.0 W
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.06 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH…………..4.59 DEPARTURE…..-0.42
TOTAL PRECIPITATION FOR THE YEAR (2025)…….10.24 DEPARTURE…..-3.27
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…..-14.2
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-32.0
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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/+9/0.03/0.0/044/06 30 S VEC1 30 S RMY 30
3/21 46/36/41/+4/0.36/0.0/220/30 48 NW VEC1 49 NW RMY 54
3/22 62/33/48/+11/T/0.0/545/74 53 WNW VEC1 52 WNW RMY 58
3/23 44/25/35/-3/0.00/0.0/694/94 39 WNW VEC1 39 NW RMY 40
3/24 43/31/37/-1/0.79/0.0/000/00 35 S VEC1 35 S RMY 36
3/25 53/33/43/+5/0.00/0.0/558/75 32 WSW VEC1 33 WSW RMY 34
3/26 51/36/44/+5/0.00/0.0/217/29 25 WNW VEC1 25 NW RMY 27
3/27 49/27/38/-1/0.00/0.0/…/.. 30 WNW VEC1 30 W RMY 33
3/28 58/35/47/+8/0.00/0.0/…/.. 38 WNW VEC1 37 WNW RMY 40
3/29 The low since midnight is 34F, the daily normal low is 31F.
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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 29
HIGH 85 IN 1945
LOW -2 IN 1923
PRECIP 2.78 INS. IN 1984
SNOWFALL 13.5 INS. IN 1984
PEAK GUST 95 MPH ENE IN 1984
RECORDS FOR MARCH 30
HIGH 83 IN 1977
LOW 10 IN 1887
PRECIP 2.92 INS. IN 2010
SNOWFALL 3.9 INS. IN 1957
PEAK GUST 60 MPH NW IN 1999
TODAY’S REPORT PREPARED BY: Joshua Polen
