Monday, April 7, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, APRIL 7, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0516E
SUNSET: 1817E
AS THE CALENDAR SAYS APRIL, THE WEATHER SAYS FEBRUARY….
The dreary weather pattern continues, except today we seemingly
took a step back to February as a mix of rain, sleet, and snow
has been falling for most of the day to this point. While there
has been no measurable frozen precipitation, it’s still a rather
rude slap in the face considering it was nearly 70F degrees just
3 days ago!
The precipitation that started just before 1am this morning has
amounted to 0.10″ of liquid equivalent through 1pm this afternoon.
As mentioned above, there has only been a trace of the frozen
precipitation types.
Temperatures were actually at the warmest for the day at midnight,
when it was 45F degrees. The mercury gradually dropped to the mid
30s by 6am this morning, and has been stuck there ever since.
Needless to say, it’s not a pleasant day to be outdoors!
Winds have been fairly steady today out of an easterly direction.
The average speed for the day so far is around 9mph. The peak gust
so far is 23mph, which occurred just after 4am.
Visibility has been variable due to the precipitation. The view has
ranged between 10-30 miles through most of the day, but has more
recently dropped to around 3 miles in time for the 1pm observation.
The maximum temperature for today is 45F degrees, which is 7 degrees
below the normal high of 52F. The minimum temperature since midnight
is 35F degrees, which is equal to the normal low of 35F.
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Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus, light rain and sleet (ice pellets)
Temperature: 36F; Dew Point: 34F; Relative Humidity: 93%
Wind: NE @ 5 kts, wind light
Sea-level pressure: 1013.2 mb; 29.92 in. Hg: rising, then more slowly
Visibility: 15 miles, thin fog
6-hr Max temp: 44F
6-hr Min temp: 35F
24-hr Precip: 0.16 inches
24-hr Snowfall: Trace
Snow Depth: 0 inches
BHO SA 1155 E13 OVC 15R-IP- 132/36/34/0505/992/ THN F ALQDS IP-B21
WND LGT TOTAL NEW SNW PST 24 HRS TRACE/ 8/5// 51013 6006/ 70016
10044 20035
10 A.M.
Weather: Overcast stratocumulus, few lower stratus fractus WSW-WNW
Temperature: 36F; Dew Point: 36F; Relative Humidity: 100%
Wind: ENE @ 8 kts
Sea-level pressure: 1011.8 mb; 29.88 in. Hg: falling, then more rapidly
Visibility: 30 miles, thin fog
3-hr Precip: 0.03 inches
3-hr Snowfall: Trace
BHO SA 1455 E8 OVC 30 118/36/36/0708/988/ FEW STFRA WSW-WNW THN F ALQDS
R-IP-E42 TOTAL NEW SNW PST 3 HRS TRACE/ 8/5// 58014 6003/
1 P.M.
Weather: Sky partially obscured, overcast stratocumulus, light drizzle
Temperature: 36F Dew Point: 36F; Relative Humidity: 100%
Wind: E @ 8G17 kts
Sea-level pressure: 1010.2 mb; 29.83 in. Hg: falling, then more rapidly
Visibility: 3 miles, fog
6-hr Max temp: 36F
6-hr Min temp: 34F
6-hr Precip: 0.04 inches
6-hr Snowfall: Trace
Snow Depth: 0 inches
BHO SA 1755 -X E2 OVC 3L-F 102/36/36/0808G17/983/ IP-E20 TOTAL NEW SNW
PST 6 HRS TRACE/ 8/5// 58016 6004/ 10036 20034
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SUMMARY FOR SUNDAY, APRIL 6, 2025
TEMPERATURE (DEGREES F)
MAX…….51 NORMAL…..52
MIN…….37 NORMAL…..34
MEAN……44 NORMAL…..43
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+1
TOTAL DEPARTURE FOR THE MONTH…………………….+18 [+2.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….21 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………120 DEPARTURE…….-18
TOTAL HEATING UNITS FOR THE SEASON………….5049 DEPARTURE……-436
TOTAL HEATING UNITS LAST SEASON TO DATE……..4794 DEPARTURE……+255
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 NNW @ 11:13 P.M.
VECTOR #1 (1-Sec)……….21 NNW @ 11:13 P.M.
VECTOR #2 (1-Sec)……….21 NNW @ 11:14 P.M.
DAVIS #1……………….20 NNW @ 11:11 P.M.
DAVIS #2 ………………20 N @ 11:12 P.M.
RMY #1 (Instantaneous)…..21 NNW @ 11:12 P.M.
RMY #2 (Instantaneous)…..22 NNW @ 11:12 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………13 NNW @ 11:24 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 11:13 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 11:13 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 NNW @ 11:13 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 N @ 11:13 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 NNW @ 11:13 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 NNW @ 11:13 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………6.3 WNW [152 total miles]
VECTOR #1……………….7.0
VECTOR #2……………….7.3
DAVIS #1………………..6.9 WNW
DAVIS #2………………..6.9 NW
RMY #1………………….6.8 WNW
RMY #2………………….7.2 WNW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.16 DEPARTURE……0.00
TOTAL PRECIPITATION FOR THE MONTH…………..1.34 DEPARTURE…..+0.33
TOTAL PRECIPITATION FOR THE YEAR (2025)…….12.05 DEPARTURE…..-2.98
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.2
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-1.1
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-33.9
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PRELIMINARY CLIMATE SUMMARY FOR APRIL 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
4/1 55/32/44/+3/0.17/0.0/512/67 38 NW VEC1 38 NW RMY 40
4/2 42/27/35/-6/0.11/T/584/76 29 NNW VEC1 28 NNW RMY 29
4/3 62/32/47/+5/0.31/0.0/000/00 38 SW VEC1 38 SW RMY 39
4/4 69/47/58/+16/0.00/0.0/456/59 31 NW VEC1 31 NW RMY 30
4/5 47/36/42/-1/0.49/0.0/000/00 25 ESE VEC1 29 SE RMY 25
4/6 51/37/44/+1/0.20/0.0/016/02 22 NNW VEC1 21 NNW RMY 21
4/7 The low since midnight is 35F, the daily normal low is 35F.
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APRIL 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 APRIL 7
HIGH 90 IN 2010
LOW 13 IN 1982
PRECIP 1.72 IN. IN 1924
SNOWFALL 4.5 IN. IN 1967, 1996
PEAK GUST 65 MPH WNW IN 1982
RECORDS FOR APRIL 8
HIGH 87 IN 1991
LOW 17 IN 1888
PRECIP 1.78 IN. IN 1956
SNOWFALL 9.3 IN. IN 1956
PEAK GUST 70 MPH S IN 2000
TODAY’S REPORT PREPARED BY: Matt Douglas
