Friday, November 3, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

FRIDAY, NOVEMBER 3, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0620E
SUNSET:  1635E

BREEZY CONDITIONS AND BRIGHT SUNSHINE ABOUND ON BLUE HILL TODAY…

This morning was a bit warmer than yesterday and started off with
light wind and mostly clear skies. By mid morning, we had some
increasing cloudiness and the wind speed began to increase. Most
of the clouds had moved on by the final observation for the day
and there was plenty of bright sunshine to bring some warmth and
a happy start to the weekend. Temperatures have remained near our
average for this time of year.

The wind has been fairly productive today, with the majority of
the breezy conditions starting late this morning and continuing
through the last daily observation time. The average speed so far
for the day is around 12mph. The current peak gust is about 31mph,
which occurred during the 10am hour.

Despite the comfortable dew points and crisp air, the maximum
visibility has only reached around 40 miles.

The maximum temperature so far today is 55F, which is the normal
high for today’s date. The minimum temperature since midnight is 36F,
which is 2 degrees below the normal low of 38F.

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PRELIMINARY STATS FOR OCTOBER 2023

TEMPERATURE, Deg. F
Avg. Max. 65.5 [+4.5] Avg. Min. 49.4 [+5.4] Mean      57.5 [+5.0] 24-hour corrected mean: 56.2
Max. for month: 81F on the 3rd and 4th
Min. for month: 35F on the 31st

HEATING DEGREE DAYS
Total heating units:    251 [-143] Total for the season:   350 [-162] Total for last season:  413

COOLING DEGREE DAYS
Total cooling units:    026 [+019] Total for the season:   715 [+038] Total for last season:  884

PRECIPITATION, Inches
Total: 1.97 [-3.52] Greatest in 24 hrs: 0.76 on the 21st

SNOWFALL, Inches
Total: 0.0 [-0.7] Greatest in 24 hrs: N/A

WIND, mph
Avg. uncorrected wind speed: 9.0 mph
Avg. corrected wind speed:   9.6 mph
Prevailing wind direction:   Southwest [13%] Peak gust and direction:  40 NW on the 21st

SUNSHINE:
Campbell-Stokes card minutes: 11160 of a possible 19824, or 56%
Astronomical total minutes: 11581 of a possible 20564, or 56%

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Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant sll quadrants, few
altocumulus E-SSE
Temperature: 38F; Dew Point: 30F; Relative Humidity: 73%
Wind: SW @ 6 kts, wind light
Sea-level pressure: 1032.3 mb; 30.48 in. Hg: steady, then rising
Visibility: 30 miles, thin smoke layer NNW-NNE, hazy
6-hr Max temp: 38F
6-hr Min temp: 36F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
BHO SA 1155 CLR 30 323/38/30/2306/048/ FEW SC DSNT ALQDS FEW AC E-SSE
THN K LYR NNW-NNE HAZY WND LGT/ 8/050 53002 10038 20036

10 A.M.
Weather: Scattered altostratus, few altocumulus NE-E, few cirrostratus
all quadrants
Temperature: 48F; Dew Point: 30F; Relative Humidity: 49%
Wind: SW @ 12 kts
Sea-level pressure: 1031.7 mb; 30.47 in. Hg: rising, then falling
Visibility: 40 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 250 SCT 40 317/48/30/2312/047/ FEW AC NE-E FEW CS ALQDS/
8/071 58006

1 P.M.
Weather: Clear, few cumulus SE-S-SSW, few cirrus W
Temperature: 53F; Dew Point: 27F; Relative Humidity: 35%
Wind: SSW @ 15G25 kts
Sea-level pressure: 1029.1 mb; 30.39 in. Hg: falling steadily
Visibility: 40 miles
6-hr Max temp: 55F
6-hr Min temp: 38F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
BHO SA 1755 CLR 40 291/53/27/2115G25/039/ FEW CU SE-S-SSW FEW CI W/
8/101 57026 10055 20038

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SUMMARY FOR THURSDAY, NOVEMBER 2, 2023

TEMPERATURE (DEGREES F)
MAX…….45   NORMAL…..55
MIN…….28   NORMAL…..38
MEAN……37   NORMAL…..47

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………-10
TOTAL DEPARTURE FOR THE MONTH…………………-20 [-9.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………28  DEPARTURE……. +9
TOTAL HEATING UNITS FOR THE MONTH……………28  DEPARTURE…….+19
TOTAL HEATING UNITS FOR THE SEASON………….406  DEPARTURE……-142
TOTAL HEATING UNITS LAST SEASON TO DATE……..426  DEPARTURE…….-20

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 NNW  @  12:05 A.M.
VECTOR #1 (1-Sec)……….23 NNW  @  12:05 A.M.
VECTOR #2 (1-Sec)……….22 NW   @  10:26 A.M.
DAVIS #1……………….22 NW   @  12:05 A.M.
DAVIS #2 ………………20 NW   @  10:48 A.M.
RMY #1 (Instantaneous)…..22 NNW  @  12:05 A.M.
RMY #2 (Instantaneous)…..22 NW   @  10:26 A.M.
MERLIN…………………18 NW
RICHARDS (C5C) (Inst)……21      @  12:05 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 NNW  @  02:31 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14      @  02:31 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14      @  10:49 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 NNW  @  02:32 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 NNW  @  02:23 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 NNW  @  02:31 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..14 NNW  @  02:23 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………14      @  02:31 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.3 NNW [198 total miles] VECTOR #1………………8.9
VECTOR #2………………9.3
DAVIS #1……………….9.0 WNW
DAVIS #2……………….9.1 NW
RMY #1…………………8.7 WNW
RMY #2…………………9.2 WNW
RICHARDS (C5C)………….9.1

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.01 DEPARTURE…..-0.29
TOTAL PRECIPITATION FOR THE YEAR…………..49.20 DEPARTURE…..+4.74

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.00 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…..TRACE DEPARTURE……-0.8

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PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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

10/1  68/50/59/+1/0.00/458/65             20 NNE VEC1 20 NNE RMY 19
10/2  68/55/62/+4/0.00/681/97             24 NE  VEC1 23 NE  RMY 24
10/3  81/54/68/+11/0.00/672/96            18 WSW VEC1 18 WSW RMY 18
10/4  81/64/73/+16/0.00/669/96            17 S   VEC1 17 S   RMY 16
10/5  77/59/68/+11/0.00/638/92            24 S   VEC1 24 S   RMY 23
10/6  71/60/66/+10/0.00/269/39            20 SE  VEC1 19 SE  RMY 18
10/7  68/54/61/+5/0.16/007/01             30 WNW VEC1 29 WNW RMY 29
10/8  63/48/56/+1/0.00/651/95             30 W   VEC1 30 WNW RMY 30
10/9  61/44/53/-2/0.00/532/78             25 WSW VEC1 24 WSW RMY 25
10/10 64/47/56/+1/T/245/36                23 W   VEC1 22 W   RMY 21
10/11 68/50/59/+5/0.00/393/58             23 SSW VEC1 22 SW  RMY 22
10/12 69/51/60/+6/0.00/479/71             18 NW  VEC1 18 NNW RMY 18
10/13 61/43/52/-2/0.00/638/95             33 NW  VEC1 31 NW  RMY 34
10/14 60/44/52/-1/0.00/247/37             24 NW  VEC1 23 NW  RMY 23
10/15 59/44/52/-1/0.00/226/34             24 NNW VEC1 25 NNW RMY 25
10/16 58/44/51/-1/0.07/166/25             17 WNW VEC1 17 WNW RMY 17
10/17 60/45/53/+1/T/211/32                15 N   VEC1 15 N   RMY 14
10/18 62/49/56/+4/0.00/079/12             15 SSW VEC1 15 SSW RMY 16
10/19 65/50/58/+8/0.00/557/85             31 SSW VEC1 30 SSW RMY 33
10/20 63/55/57/+6/0.01/000/00             28 SSE VEC1 26 SE  RMY 26
10/21 58/52/55/+4/0.76/000/00             40 NW  VEC1 41 NW  RMY 44
10/22 56/45/51/+1/0.00/382/59             36 WNW VEC1 35 WNW RMY 36
10/23 62/42/52/+2/0.01/386/60             24 NW  VEC1 22 NNW RMY 23
10/24 61/41/51/+1/0.00/424/66             28 SW  VEC1 26 SW  RMY 29
10/25 75/50/63/+14/0.00/472/74            26 SSW VEC1 26 SSW RMY 27
10/26 79/59/69/+20/0.00/515/81            20 WSW VEC1 19 WSW RMY 20
10/27 77/59/68/+19/0.00/380/60            23 WSW VEC1 22 WSW RMY 23
10/28 80/57/69/+21/0.00/625/99            31 W   VEC1 31 W   RMY 31
10/29 57/44/51/+3/0.41/000/00             25 E   VEC1 24 E   RMY 25
10/30 52/41/47/-1/0.55/000/00             25 NNW VEC1 25 NNW RMY 27
10/31 48/35/42/-5/0.00/579/93             25 NNW VEC1 24 NNW RMY 26

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OCTOBER DAILY RECORDS TO DATE

.NONE…

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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  42/31/37/-10/0.01/T/…/..          23 ENE VEC1 21 ENE RMY 23
11/2  45/28/37/-10/0.00/…/..            23 NNW VEC1 23 NNW RMY 22

11/3 The low since midnight is 37F, the daily normal low is 38F

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NOVEMBER DAILY RECORDS TO DATE

11/1 TIED RECORD FOR SNOWFALL WITH A TRACE, TIED WITH 1906, 1951

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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR NOVEMBER 3
HIGH 75 IN 1990
LOW 21 IN 1891
PRECIP 1.92 INCHES IN 1951
SNOWFALL 0.1 IN 1951
PEAK GUST 96e SSE IN 1951

RECORDS FOR NOVEMBER 4
HIGH 77 IN 1987
LOW 22 IN 1891
PRECIP 3.27 INCHES IN 1910
SNOWFALL 6.4 IN 1945
PEAK GUST 73 WNW IN 1965

TODAY’S REPORT PREPARED BY: Amanda Joly