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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, DECEMBER 3, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0656E
SUNSET: 1612E
ANOTHER COLD DAY WITH A MIX OF SUN AND CLOUDS….
Skies started the day off clear, but a layer of stratocumulus did
overtake the sky for a few hours this morning before moving out.
As we moved into the early afternoon hours, sunshine is once again
in control, but it’s not doing much to warm things up today.
Temperatures were the coldest we’ve seen so far this season early
this morning with a low of 20F. Readings have risen into the mid
30s by early this afternoon. Another day with temperatures solidly
below normal. The dew point has been falling off since this morning
with values briefly getting to 20F before dropping back into the
teens. The air mass is quite dry for sure.
Winds started the day on the lighter side, but have increased as we
push through the early afternoon. The average speed for the day so
far is around 9mph, mainly out of the northwest. The peak gust for
the day so far is 21mph at 10:24am.
Visibility was a bit limited early this morning with pollution
trapped under an inversion, but the view quickly jumped to 80 miles
by mid morning and has been holding at that value since.
The maximum temperature for today is 36F degrees, which is 8 degrees
below the normal high of 44F. The minimum temperature since midnight
is 20F degrees, which is 9 degrees below the normal low of 29F.
————————————————————–
PRELIMINARY STATS FOR NOVEMBER 2024
TEMPERATURE, Deg. F
Avg. Max. 54.6 [+4.5]
Avg. Min. 37.4 [+3.6]
Mean 46.0 [+4.0]
24-hour corrected mean: 45.8
Max. for month: 80F on the 6th
Min. for month: 26F on the 30th
HEATING DEGREE DAYS
Total heating units: 570 [-122]
Total for the season: 943 [-261]
Total for last season: 1087
COOLING DEGREE DAYS
Total cooling units: 5 [+005]
Total for the season: 768 [+091]
Total for last season: 715
PRECIPITATION, Inches
Total: 3.67 [-0.64]
Greatest in 24 hrs: 1.61 on the 21st-22nd
SNOWFALL, Inches
Total: 0.0 [-1.8]
Greatest in 24 hrs: 0.0 on the N/A
WIND, mph
Avg. uncorrected wind speed: 12.5 mph
Avg. corrected wind speed: 12.9 mph
Prevailing wind direction: Northwest [22%]
Peak gust and direction: 52 WNW on the 24th
SUNSHINE:
Campbell-Stokes card minutes: 12282 of a possible 17010, or 72%
Astronomical total minutes: 12709 of a possible 17592 or 72%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus all quadrants
Temperature: 21F; Dew Point: 17F; Relative Humidity: 84%
Wind: NW @ 8 kts
Sea-level pressure: 1022.3 mb; 30.19 in. Hg: rising, then more rapidly
Visibility: 40 miles
6-hr Max temp: 24F
6-hr Min temp: 20F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 40 223/21/17/3208/019/ FEW SC ALQDS/ 8/500 53011
10024 20020
10 A.M.
Weather: Broken stratocumulus
Temperature: 29F; Dew Point: 16F; Relative Humidity: 59%
Wind: NW @ 9 kts
Sea-level pressure: 1023.5 mb; 30.22 in. Hg: rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E30 BKN 80 235/29/16/3109/022/ 8/500 51012
1 P.M.
Weather: Scattered stratocumulus, scattered cirrus
Temperature: 36F; Dew Point: 19F; Relative Humidity: 49%
Wind: NW @ 9G16 kts
Sea-level pressure: 1021.9 mb; 30.18 in. Hg: falling, then more slowly
Visibility: 80 miles
6-hr Max temp: 36F
6-hr Min temp: 21F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 40 SCT 250 SCT 80 219/36/19/3209G16/018/ 8/501 56016
10036 20021
————————————————————–
SUMMARY FOR MONDAY, DECEMBER 2, 2024
TEMPERATURE (DEGREES F)
MAX…….38 NORMAL…..44
MIN…….22 NORMAL…..29
MEAN……30 NORMAL…..37
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-7
TOTAL DEPARTURE FOR THE MONTH…………………….-14 [-7.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………35 DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE MONTH……………70 DEPARTURE…….+13
TOTAL HEATING UNITS FOR THE SEASON…………1013 DEPARTURE……-247
TOTAL HEATING UNITS LAST SEASON TO DATE…….1126 DEPARTURE……-113
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)………..18 W @ 03:34 A.M.
VECTOR #1 (1-Sec)……….18 W @ 03:34 A.M.
VECTOR #2 (1-Sec)……….19 W @ 03:34 A.M.
DAVIS #1……………….18 W @ 03:21 A.M.
DAVIS #2 ………………18 WNW @ 06:01 A.M.
RMY #1 (Instantaneous)…..18 W @ 03:26 A.M.
RMY #2 (Instantaneous)…..19 W @ 06:01 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 W @ 05:55 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 @ 06:00 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14 @ 05:58 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 W @ 06:01 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 W @ 05:57 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..13 W @ 05:51 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..14 W @ 05:59 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.5 W [203 total miles]
VECTOR #1……………….8.7
VECTOR #2……………….9.1
DAVIS #1………………..9.0 WNW
DAVIS #2………………..8.8 NW
RMY #1………………….8.5 WNW
RMY #2………………….9.0 WNW
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…………..0.00 DEPARTURE…..-0.35
TOTAL PRECIPITATION FOR THE YEAR (2024)…….47.47 DEPARTURE…..-1.35
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.2
TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE SEASON (2024-2025)…….0.0 DEPARTURE……-2.9
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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
11/1 77/49/63/+16/0.00/0.0/347/56 36 WNW VEC1 36 WNW RMY 37
11/2 55/37/46/-1/0.00/0.0/228/37 21 N VEC1 23 N RMY 21
11/3 48/30/39/-7/0.00/0.0/595/97 20 NNW VEC1 21 NNW RMY 21
11/4 49/33/41/-5/0.00/0.0/061/10 20 SSE VEC1 21 SSE RMY 21
11/5 73/46/60/+14/0.00/0.0/505/83 35 SW VEC1 35 SW RMY 37
11/6 80/59/70/+25/0.00/0.0/558/92 39 WSW VEC1 39 WSW RMY 42
11/7 69/47/58/+13/0.00/0.0/519/86 37 WNW VEC1 35 WNW RMY 42
11/8 63/41/52/+7/0.00/0.0/572/95 42 WNW VEC1 42 WNW RMY 47
11/9 50/36/43/-1/0.00/0.0/599/100 40 NW VEC1 42 NW RMY 43
11/10 60/32/46/+2/T/0.0/388/65 29 WSW VEC1 29 SW RMY 31
11/11 66/50/58/+15/0.08/0.0/457/77 40 SW VEC1 42 SW RMY 43
11/12 54/33/44/+1/0.00/0.0/545/92 48 NNW VEC1 50 NNW RMY 56
11/13 43/28/36/-7/0.00/0.0/584/99 32 N VEC1 33 N RMY 31
11/14 42/27/35/-7/0.00/0.0/542/92 22 NE VEC1 22 NE RMY 22
11/15 58/27/43/+1/0.00/0.0/580/99 28 NW VEC1 28 NW RMY 30
11/16 60/38/49/+7/0.00/0.0/572/98 33 NNW VEC1 35 NNW RMY 35
11/17 62/40/51/+10/0.00/0.0/553/95 26 NW VEC1 26 NW RMY 26
11/18 61/43/52/+11/T/0.0/418/72 29 NW VEC1 28 NW RMY 31
11/19 56/39/48/+7/0.00/0.0/565/98 29 NW VEC1 29 NW RMY 30
11/20 52/36/44/+4/T/0.0/564/98 21 E VEC1 21 E RMY 21
11/21 44/43/44/+4/1.27/0.0/000/00 51 ENE VEC1 50 ENE RMY 52
11/22 52/40/46/+6/0.55/0.0/372/65 44 E VEC1 47 E RMY 45
11/23 44/38/41/+2/0.71/0.0/000/00 46 NW VEC1 45 NW RMY 49
11/24 48/35/42/+3/0.00/0.0/523/92 52 WNW VEC1 53 WNW RMY 53
11/25 49/32/41/+2/0.00/0.0/556/98 33 WNW VEC1 34 WNW RMY 34
11/26 44/35/40/+2/0.37/0.0/062/11 28 WNW VEC1 29 NW RMY 28
11/27 49/33/41/+3/0.00/0.0/513/91 25 W VEC1 25 W RMY 25
11/28 45/36/41/+3/0.69/0.0/000/00 35 NW VEC1 35 NW RMY 35
11/29 44/32/38/0/0.00/0.0/410/73 36 WNW VEC1 36 WNW RMY 37
11/30 40/26/33/-4/0.00/0.0/521/93 23 W VEC1 23 W RMY 23
————————————————————–
NOVEMBER DAILY RECORDS TO DATE
11/1 RECORD HIGH TEMPERATURE OF 77F, OLD RECORD WAS 75F IN 2003.
11/6 RECORD HIGH TEMPERATURE OF 80F, OLD RECORD WAS 74F IN 2022.
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 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
12/1 37/23/30/-7/0.00/0.0/…/.. 21 WSW VEC1 21 WSW RMY 21
12/2 38/22/30/-7/0.00/0.0/…/.. 18 W VEC1 18 W RMY 18
12/3 The low since midnight is 20F, the daily normal low is 29F.
————————————————————–
DECEMBER DAILY RECORDS TO DATE
NONE.
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR DECEMBER 3
HIGH 67 IN 2009
LOW -1 IN 1890
PRECIP 2.10 INS. IN 1986
SNOWFALL 6.0 INS. IN 1963
PEAK GUST 73e MPH W IN 1942
RECORDS FOR DECEMBER 4
HIGH 67 IN 1998
LOW -4 IN 1940
PRECIP 1.87 INS. IN 1968
SNOWFALL 6.0 INS. IN 1907
PEAK GUST 73 MPH WNW IN 1980
TODAY’S REPORT PREPARED BY: Matt Douglas
