Sunday, November 5, 2023

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

SUNDAY, NOVEMBER 5, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0622E
SUNSET:  1633E

A MIX OF SUN AND CLOUDS, AND PLEASANTLY MILD ON THIS SUNDAY…

Not a bad day at all for early November with partial sunshine
and unseasonably mild temperatures. The mercury has reached the
low 60s early this afternoon. Definitely a pleasant feel to the
air especially with a light wind blowing out there.

As mentioned, the temperature has reached the lower 60s, which
is solidly more than 5 degrees above the expected high for this
time of year. The dew point has been rising slightly from the
mid 30s to around 40, so the air mass is still on the dry side.

The wind has been quite light today, even going calm for a time
this morning. The average speed so far for the day is around
7mph. The peak gust for the day so far has only been around
20mph, occurring around 1am.

Despite the comfortable dew points and crisp air, the maximum
visibility has only reached around 40 miles once again today
due to general haziness.

The maximum temperature so far today is 61F, which is 7 degrees
above the normal high of 54F. The minimum temperature since
midnight is 45F, which is 8 degrees above the normal low of 37F.

————————————————————–

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%

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, broken altocumulus, broken cirrus
Temperature: 47F; Dew Point: 36F; Relative Humidity: 65%
Wind: ESE @ 5 kts, wind light
Sea-level pressure: 1016.5 mb; 30.02 in. Hg: falling, then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 48F
6-hr Min temp: 45F
24-hr Precip: Trace
24-hr Snowfall: 0.0 inches
BHO SA 1155 70 SCT E120 BKN 250 BKN 30 165/47/36/1105/002/
HAZY WND LGT/ 8/071 56010 70000 10048 20045

10 A.M.
Weather: Broken altocumulus, broken cirrocumulus, broken cirrus
Temperature: 55F; Dew Point: 40F; Relative Humidity: 57%
Wind: WNW @ 2 kts, wind light
Sea-level pressure: 1016.8 mb; 30.03 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E120 BKN 200 BKN 250 BKN 40 168/55/40/3002/003/
FEW LWR AC DSNT W-NE HAZY WND LGT/ 8/079 50003

1 P.M.
Weather: Broken altocumulus lenticularis, broken altocumulus,
broken cirrus
Temperature: 59F; Dew Point: 39F; Relative Humidity: 46%
Wind: NW @ 6 kts, wind light
Sea-level pressure: 1014.6 mb; 29.96 in. Hg: falling, then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 61F
6-hr Min temp: 47F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
BHO SA 1755 E60 BKN 120 BKN 250 BKN 40 146/59/39/3206/996/
ACSL ALQDS HAZY WND LGT/ 8/041 56012 10061 20047

————————————————————–

SUMMARY FOR SATURDAY, NOVEMBER 4, 2023

TEMPERATURE (DEGREES F)
MAX…….59   NORMAL…..54
MIN…….44   NORMAL…..37
MEAN……52   NORMAL…..46

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+6
TOTAL DEPARTURE FOR THE MONTH…………………-14 [-3.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………13  DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE MONTH……………88  DEPARTURE…….+13
TOTAL HEATING UNITS FOR THE SEASON………….438  DEPARTURE……-149
TOTAL HEATING UNITS LAST SEASON TO DATE……..439  DEPARTURE……..-1

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)……….E32 SW   @  12:00 A.M.
VECTOR #1 (1-Sec)……….31 SW   @  12:00 A.M.
VECTOR #2 (1-Sec)……….31 SW   @  12:03 A.M.
DAVIS #1……………….30 SW   @  12:00 A.M.
DAVIS #2 ………………30 SW   @  12:00 A.M.
RMY #1 (Instantaneous)…..32 SW   @  12:00 A.M.
RMY #2 (Instantaneous)…..32 SW   @  12:03 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……29      @  12:00 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 SW   @  12:08 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21      @  12:01 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22      @  12:01 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………21 SSW  @  12:15 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 SW   @  12:02 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 SW   @  01:00 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 SW   @  12:01 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………18      @  12:40 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.8 SW [212 total miles] VECTOR #1……………….9.6
VECTOR #2………………10.0
DAVIS #1………………..9.2 SW
DAVIS #2………………..9.8 SW
RMY #1………………….9.5 SW
RMY #2…………………10.1 SW
RICHARDS (C5C)…………..9.1

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.01 DEPARTURE…..-0.59
TOTAL PRECIPITATION FOR THE YEAR…………..49.20 DEPARTURE…..+4.44

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

————————————————————–

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

————————————————————–

OCTOBER DAILY RECORDS TO DATE

.NONE…

————————————————————–

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/-10/0.00/0.0/…/..        23 NNW VEC1 23 NNW RMY 22
11/3  55/36/46/0/0.00/0.0/…/..          32 SW  VEC1 33 SSW RMY 33
11/4  59/44/52/+6/0.00/0.0/…/..         32 SW  VEC1 31 SW  RMY 32

11/5 The low since midnight is 45F, the daily normal low is 37F

————————————————————–

NOVEMBER DAILY RECORDS TO DATE

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

————————————————————–

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

RECORDS FOR NOVEMBER 5
HIGH 76 IN 1994
LOW 18 IN 1908
PRECIP 4.26 INCHES IN 1955
SNOWFALL 2.0 IN 1894
PEAK GUST 69 W IN 2004

RECORDS FOR NOVEMBER 6
HIGH 72 IN 2020
LOW 22 IN 1951
PRECIP 1.72 INCHES IN 1907
SNOWFALL 6.0 IN 1894
PEAK GUST 63 W IN 1973

TODAY’S REPORT PREPARED BY: Matt Douglas