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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, FEBRUARY 3, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0656E
SUNSET: 1700E
CLOUDS GIVE WAY TO SOME MUCH WELCOMED SUNSHINE….
Sunshine has certainly been a luxury these past few days. Though
the morning began gray yet again due to a stratocumulus cloud deck
in place, this has broken up and moved off to the south by early
afternoon, allowing us to finally enjoy some rays.
Temperatures were slow to climb this morning under the cloud cover
and with northerly flow. It began in the mid 20s, and has since made
it to the mid 30s, giving a seasonable feel. The dew point has changed
little, and is holding in the low 20s.
Though the winds have not been particularly strong, they have been
consistent. We are currently at an average speed of 10mph, with a
peak gust of around 25mph a touch after 8:30am.
Visibility has been improving as the day goes on, rising from 40
miles this morning to 60 miles by afternoon.
The maximum temperature so far today is 35F degrees, which is
equal to the normal high of 35F. The minimum temperature
so far since midnight is 26F degrees, which is 8 degrees above
the normal low of 18F.
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PRELIMINARY STATS FOR JANUARY 2024
TEMPERATURE, Deg. F
Avg. Max. 36.4 [+1.7]
Avg. Min. 24.0 [+5.7]
Mean 30.2 [+3.7]
24-hour corrected mean: 29.8
Max. for month: 57F on the 13th
Min. for month: 10F on the 20th and 21st
HEATING DEGREE DAYS
Total heating units: 1070 [-123]
Total for the season: 2965 [-438]
Total for last season: 2823
COOLING DEGREE DAYS
Total cooling units: 000 [ 000]
Total for the season: 000 [ 000]
Total for last season: 000
PRECIPITATION, Inches
Total: 9.24 [+4.74]
Greatest in 24 hrs: 2.88 on the 9th-10th
SNOWFALL, Inches
Total: 20.6 [+2.0]
Greatest in 24 hrs: 13.2 on the 6th-7th
WIND, mph
Avg. uncorrected wind speed: 11.2 mph
Avg. corrected wind speed: 11.7 mph
Prevailing wind direction: Northwest [18%]
Peak gust and direction: 70 SSE on the 10th
SUNSHINE:
Campbell-Stokes card minutes: 5880 of a possible 17130, or 34%
Astronomical total minutes: 6056 of a possible 17652, or 34%
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Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, broken altocumulus/altostratus,
broken cirrostratus
Temperature: 27F; Dew Point: 21F; Relative Humidity: 78%
Wind: NNW @ 9 kts
Sea-level pressure: 1016.5 mb; 30.02 in. Hg: rising, then more rapidly
Visibility: 40 miles
6-hr Max temp: 30F
6-hr Min temp: 26F
24-hr Precip: 0.03 inches
24-hr Snowfall: Trace
Snow Depth: 0 inches
BHO SA 1155 40 SCT E110 BKN 250 BKN 40 165/27/21/3409/002/
TOTAL NEW SNW PST 24HRS TRACE/ 8/578 4/000 53019 70003 10030 20026
10 A.M.
Weather: Overcast stratocumulus, few breaks in overcast distant S-W-N-NE
Temperature: 27F; Dew Point: 20F; Relative Humidity: 74%
Wind: N @ 9 kts
Sea-level pressure: 1017.0 mb; 30.03 in. Hg: rising, then steady
Visibility: 60 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E22 OVC 60 170/27/20/3509/003/ FEW BINOVC DSNT S-W-N-NE/
8/5// 51005
1 P.M.
Weather: Scattered stratocumulus, few cirrus distant NE-SE and W-NNW
Temperature: 34F; Dew Point: 20F; Relative Humidity: 57%
Wind: N @ 10 kts
Sea-level pressure: 1015.7 mb; 29.99 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 35F
6-hr Min temp: 26F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E30 SCT 60 157/34/20/3510/999/ FEW CI DSNT NE-SE AND W-NNW/
8/501 4/000 58013 10035 20026
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SUMMARY FOR FRIDAY, FEBRUARY 2, 2024
TEMPERATURE (DEGREES F)
MAX…….39 NORMAL…..35
MIN…….31 NORMAL…..18
MEAN……35 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………+9
TOTAL DEPARTURE FOR THE MONTH……………………+18 [+8.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………30 DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH……………60 DEPARTURE…….-18
TOTAL HEATING UNITS FOR THE SEASON…………3025 DEPARTURE……-456
TOTAL HEATING UNITS LAST SEASON TO DATE…….2900 DEPARTURE……+125
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E23 N @ 11:44 P.M.
VECTOR #1 (1-Sec)……….24 N @ 11:50 P.M.
VECTOR #2 (1-Sec)……….23 NNW @ 11:51 P.M.
DAVIS #1……………….22 N @ 08:28 P.M.
DAVIS #2 ………………21 N @ 08:28 P.M.
RMY #1 (Instantaneous)…..25 N @ 11:50 P.M.
RMY #2 (Instantaneous)…..24 NNW @ 11:51 P.M.
MERLIN…………………25 N
RICHARDS (C5C) (Inst)……24 @ 11:43 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 NNW @ 08:34 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 08:29 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 08:35 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 N @ 08:29 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 N @ 08:35 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 N @ 08:29 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 NNW @ 08:35 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 @ 08:29 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.0 N [167 total miles]
VECTOR #1……………..7.3
VECTOR #2……………..7.5
DAVIS #1………………6.9 NNW
DAVIS #2………………7.1 NNW
RMY #1………………..7.2 NNW
RMY #2………………..7.5 NNW
RICHARDS (C5C)…………7.8
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.03 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..0.03 DEPARTURE…..-0.25
TOTAL PRECIPITATION FOR THE YEAR (2024)……..9.27 DEPARTURE…..+4.49
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE……-1.4
TOTAL SNOWFALL FOR THE SEASON (2023-2024)……20.9 DEPARTURE…..-14.2
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PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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
2/1 40/30/35/+9/0.00/0.0/…/.. 25 SW VEC1 24 SW RMY 26
2/2 39/31/35/+9/0.03/T/…/.. 23 N VEC1 24 N RMY 25
2/3 The low since midnight is 26F, the daily normal low is 18F
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FEBRUARY DAILY RECORDS TO DATE
NONE…
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PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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
1/1 37/25/31/+2/0.00/0.0/296/54 15 N VEC1 14 N RMY 15
1/2 39/19/29/+1/0.00/0.0/550/100 17 WNW VEC1 17 WNW RMY 17
1/3 42/25/34/+6/0.00/0.0/347/63 20 WNW VEC1 21 WNW RMY 21
1/4 42/21/32/+4/T/T/237/43 37 NNW VEC1 36 NNW RMY 39
1/5 32/17/25/-3/0.00/0.0/542/98 40 NW VEC1 39 NW RMY 39
1/6 34/24/29/+1/0.11/0.2/022/04 36 E VEC1 36 E RMY 36
1/7 33/21/27/0/0.84/13.0/000/00 38 ENE VEC1 37 ENE RMY 42
1/8 32/21/27/0/0.00/0.0/406/73 28 NW VEC1 28 NW RMY 31
1/9 40/23/32/+5/0.98/T/000/00 46 SE VEC1 49 SE RMY 46
1/10 53/41/47/+20/1.90/0.0/201/36 70 SSE VEC1 69 SSE RMY 75
1/11 43/35/39/+12/0.00/0.0/162/29 45 WNW VEC1 43 WNW RMY 47
1/12 47/33/40/+13/0.00/0.0/533/95 29 SE VEC1 28 ESE RMY 28
1/13 57/36/47/+21/1.72/0.0/146/26 47 ESE VEC1 51 ESE RMY 49
1/14 39/22/31/+5/0.02/0.4/328/58 53 WNW VEC1 52 WNW RMY 54
1/15 31/17/24/-2/T/T/475/84 30 WNW VEC1 29 WNW RMY 30
1/16 34/19/27/+1/0.61/3.2/000/00 36 NW VEC1 33 NW* RMY 31*
1/17 25/13/19/-7/0.00/0.0/529/93 29 NW VEC1 28 W* RMY 27*
1/18 26/13/20/-6/0.00/0.0/069/12 30 WSW VEC1 30 WSW RMY 29
1/19 27/16/22/-4/T/T/000/00 31 NW VEC1 30 NW RMY 34
1/20 20/10/15/-11/0.05/0.7/172/30 30 NW VEC1 30 NW RMY 31
1/21 25/10/18/-8/0.00/0.0/513/89 30 NW VEC1 31 NW RMY 32
1/22 37/13/25/-1/0.00/0.0/416/72 35 SW VEC1 35 SW RMY 36
1/23 38/30/34/+8/0.07/0.5/006/01 30 WSW VEC1 30 WSW RMY 31
1/24 39/29/34/+8/0.40/0.7/000/00 26 S VEC1 26 S RMY 26
1/25 50/38/44/+18/0.18/0.0/088/15 35 SW VEC1 34 SSW RMY 36
1/26 40/35/38/+12/0.69/0.0/000/00 23 ESE VEC1 23 ESE RMY 23
1/27 36/33/35/+9/0.06/0.0/000/00 20 NNE VEC1 20 NNE RMY 19
1/28 35/31/33/+7/0.70/0.6/000/00 33 NNE VEC1 33 NNE RMY 35
1/29 34/29/32/+6/0.13/0.9/018/03 38 N VEC1 38 N RMY 39
1/30 30/21/26/0/0.06/0.4/000/00 26 ENE VEC1 26 ENE RMY 28
1/31 32/23/28/+2/0.00/0.0/000/00 14 SW VEC1 13 SW RMY 14
* Reading impacted by icing
————————————————————–
JANUARY DAILY RECORDS TO DATE
1/13: RECORD PRECIPITATION OF 1.72 INS,
BEATS PREVIOUS RECORD OF 1.54 INS SET IN 1979
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR FEBRUARY 3
HIGH 58F IN 1991
LOW -11F IN 2023
PRECIP 2.14 INS. IN 1970
SNOWFALL 7.0 INS. IN 1913
PEAK GUST 102 MPH S IN 1970 [RECORD FOR MONTH]
RECORDS FOR FEBRUARY 4
HIGH 63F IN 1991
LOW -14F IN 2023
PRECIP 1.80 INS. IN 1926
SNOWFALL 15.0 INS. IN 1961
PEAK GUST 89 MPH SSE IN 1972
TODAY’S REPORT PREPARED BY: Joshua Polen
