Saturday, April 26, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, APRIL 26, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0446E
SUNSET: 1839E
WINDY WITH PERIODS OF RAIN….
Rain began here mid morning, with the intensity being rather light.
The storm total precipitation so far is 0.37″, which will certainly
aid in reducing our rainfall deficit for the month. A lull in the rainfall
began around 10:30am, lasting until 12:30pm.
Temperatures have been stable, holding in the mid to upper 50s all day.
Though it may feel chilly compared to our recent warm stretch, this is
only slightly below climatology in terms of high temperature.
Winds picked up last night, and have remained elevated over the past
several hours. The average speed so far is 19mph, mostly out of the
south-southwest. Gusts have frequented the 30-40mph range, with a peak
gust of 41mph occurring 3 separate times.
Visibility remains poor due to fog and low clouds. Views have ranged from
1/16 to 10 miles.
The maximum temperature for today is 59F degrees, which is 2 degrees
below the normal high of 61F. The minimum temperature since midnight is
56F degrees, which is 14 degrees above the normal low of 42F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain and fog
Temperature: 57F; Dew Point: 57F; Relative Humidity: 100%
Wind: S @ 16G30 kts, peak wind SSW 35mph @ 6:52am
Sea-level pressure: 1013.6 mb; 29.93 in. Hg: falling, then more rapidly
Visibility: 1/8 mile, fog
6-hr Max temp: 57F
6-hr Min temp: 56F
24-hr Precip: 0.05 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 X W2 1/8R-F 136/57/57/1916G30/993/ PK WND 2030/52/ 8////
58020 6005/ 70005 10057 20056
10 A.M.
Weather: Sky obscured, vertical visibility 300ft, light rain and fog
Temperature: 58F; Dew Point: 58F; Relative Humidity: 100%
Wind: S @ 22G36 kts, peak wind SSW 41mph @ 9:47am
Sea-level pressure: 1010.6 mb; 29.84 in. Hg: falling unsteadily
Visibility: 2 miles, fog
3-hr Precip: 0.27 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 X W3 2R-F 106/58/58/1922G36/984/ PK WND 2036/47/ 8////
57030 6027/
1 P.M.
Weather: Sky obscured, vertical visibility 200ft, very light rain and fog
Temperature: 58F Dew Point: 58F; Relative Humidity: 100%
Wind: SSW @ 17G28 kts, peak wind SSW 39mph @ 11:56am
Sea-level pressure: 1008.6 mb; 29.78 in. Hg: falling, then more slowly
Visibility: 1/16 miles, fog
6-hr Max temp: 59F
6-hr Min temp: 57F
6-hr Precip: 0.32 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 X W2 1/16R-F 086/58/58/2017G28/978/ PCPN VRY LGT PK WND 2034/56/
8//// 56020 6032/ 10059 20057
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SUMMARY FOR FRIDAY, APRIL 25, 2025
TEMPERATURE (DEGREES F)
MAX…….78 NORMAL…..61
MIN…….52 NORMAL…..42
MEAN……65 NORMAL…..51
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+14
TOTAL DEPARTURE FOR THE MONTH………………………+41 [+1.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………..0 DEPARTURE…….-14
TOTAL HEATING UNITS FOR THE MONTH……………433 DEPARTURE…….-42
TOTAL HEATING UNITS FOR THE SEASON………….5362 DEPARTURE……-460
TOTAL HEATING UNITS LAST SEASON TO DATE……..5096 DEPARTURE……+266
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH……………..2 DEPARTURE………0
TOTAL COOLING UNITS FOR THE SEASON…………….2 DEPARTURE………0
TOTAL COOLING UNITS LAST SEASON TO DATE………..0 DEPARTURE……..+2
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)………..30 SSW @ 08:59 P.M.
VECTOR #1 (1-Sec)……….30 SSW @ 09:17 P.M.
VECTOR #2 (1-Sec)……….31 SSW @ 09:17 P.M.
DAVIS #1……………….30 S @ 08:32 P.M.
DAVIS #2 ………………31 S @ 08:37 P.M.
RMY #1 (Instantaneous)…..30 SSW @ 09:17 P.M.
RMY #2 (Instantaneous)…..32 SSW @ 09:17 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………21 SSW @ 09:00 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 @ 08:59 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 @ 08:59 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 S @ 08:46 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 S @ 08:37 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 SSW @ 08:59 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 SSW @ 08:59 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..10.3 SSW [248 total miles]
VECTOR #1………………10.6
VECTOR #2………………10.9
DAVIS #1……………….10.6 SSW
DAVIS #2……………….11.0 SSW
RMY #1…………………10.4 SSW
RMY #2…………………11.0 SSW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.05 DEPARTURE…..-0.09
TOTAL PRECIPITATION FOR THE MONTH…………..2.93 DEPARTURE…..-1.11
TOTAL PRECIPITATION FOR THE YEAR (2025)…….13.64 DEPARTURE…..-4.42
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH………………..1.7 DEPARTURE……-1.0
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……35.8 DEPARTURE…..-33.8
————————————————————–
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 45/34/40/-4/0.18/T/000/00 24 E VEC1 23 NNE RMY 23
4/8 40/26/33/-11/0.10/0.1/196/25 51 W VEC1 48 W RMY 51
4/9 46/24/35/-9/0.00/0.0/755/96 36 WNW VEC1 33 NW RMY 36
4/10 49/29/39/-6/0.01/0.0/569/72 23 SSW VEC1 23 SSW RMY 25
4/11 45/31/38/-7/0.39/1.2/024/03 25 ENE VEC1 27 ENE RMY 26
4/12 36/33/35/-11/0.46/0.4/000/00 39 ENE VEC1 40 E RMY 42
4/13 42/35/39/-7/0.16/0.0/000/00 38 NE VEC1 38 NE RMY 40
4/14 67/35/51/+4/0.00/0.0/745/93 29 WNW VEC1 29 NNW RMY 28
4/15 66/44/55/+8/0.04/0.0/209/26 53 NW VEC1 51 NW RMY 54 TSTM
4/16 51/37/44/-3/T/0.0/484/60 44 WNW VEC1 43 WNW RMY 47
4/17 59/35/47/-1/0.00/0.0/800/99 35 WNW VEC1 34 WNW RMY 34
4/18 66/38/54/+4/0.00/0.0/617/76 41 SSW VEC1 42 SSW RMY 43
4/19 82/52/67/+18/T/0.0/383/47 40 WNW VEC1 40 W RMY 40
4/20 67/45/56/+7/0.00/0.0/768/94 53 NW VEC1 54 NW RMY 56
4/21 63/37/50/0/0.00/0.0/566/69 30 SSW VEC1 28 SSW RMY 31
4/22 75/44/60/+10/0.26/0.0/452/55 30 SSW VEC1 30 SSW RMY 30
4/23 72/43/58/+8/0.00/0.0/792/96 24 NW VEC1 23 NW RMY 26
4/24 74/45/60/+9/0.00/0.0/…/.. 31 S VEC1 31 S RMY 30
4/25 78/52/65/+14/T/0.0/…/.. 30 SSW VEC1 30 SSW RMY 30
4/26 The low since midnight is 56F, the daily normal low is 42F.
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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 26
HIGH 88 IN 2009
LOW 23 IN 1919
PRECIP 1.64 IN. IN 1931
SNOWFALL 1.0 IN. IN 2000
PEAK GUST 53 MPH SSW IN 1996
RECORDS FOR APRIL 27
HIGH 93 IN 1990
LOW 28 IN 1919
PRECIP 1.89 IN 1979
SNOWFALL 2.7 IN. IN 1993
PEAK GUST 65e MPH N IN 1941
TODAY’S REPORT PREPARED BY: Joshua Polen
