Tuesday, November 2, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, NOVEMBER 2, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0619E
SUNSET: 1636E
SUNSHINE GIVING WAY TO CLOUDS, BUT SEASONABLE TEMPERATURES….
A mix of sun and clouds this morning has given way to overcast
skies early this afternoon. A solid layer of cirrostratus has
overtaken the sky, thus the lack of sunshine is making it feel a
bit chilly out there along with a bit of a breeze and dry air.
The wind started off on the light side this morning, but has
freshened this afternoon with frequent gusts over 20mph occurring.
The direction has been backing a bit from the west-southwest to
southwest. The clouds and southwest wind flow along with falling
air pressure suggests a cold front is approaching the area.
As mentioned, the air mass is dry with the dew point in the low 30s.
As a matter of fact, today is the first time so far this early
cool season we’ve measured a dew point below freezing!
Visibility has been excellent for the most part today, decreasing
from around 80 miles early this morning to 70 miles early this
afternoon.
The high so far today is 56F, 1 degree above the normal max of
55F. The low since midnight is 40F, 2 degrees above the normal low
of 38F.
Today’s Observations:
7 A.M.
Weather: Broken altocumulus, thin broken cirrus
Temperature: 42F; Dew Point: 31F; Relative Humidity: 64%
Wind: WSW @ 7 kts
Sea-level pressure: 1022.0 mb; 30.18 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 42F
6-hr Min temp: 40F
24-hr Precip: 0.00 ins.
BHO SA 1155 E100 BKN 250 -BKN 80 220/42/31/2507/018/ 8/051 51008 10042 20040
10 A.M.
Weather: Broken altocumulus, thin broken cirrus
Temperature: 50F; Dew Point: 34F; Relative Humidity: 53%
Wind: WSW @ 6 kts
Sea-level pressure: 1022.2 mb; 30.19 in Hg; rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E110 BKN 250 -BKN 70 222/50/34/2506/019/ 8/051 50002
1 P.M.
Weather: Scattered stratocumulus, broken cirrostratus, overcast cirrus
Temperature: 54F, Dew point: 30F; Relative Humidity: 39%
Wind: SW @ 14G21 kts
Sea-level pressure: 1020.1 mb; 30.12 in Hg; falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 56F
6-hr Min temp: 42F
6-hr Precip: 0.00 ins.
BHO SA 1755 55 SCT E180 BKN 250 OVC 70 201/54/30/2314G21/012/ 8/507
58021 10056 20042
SUMMARY FOR MONDAY, NOVEMBER 1, 2021
TEMPERATURE (DEGREES F)
MAX…….59 NORMAL…..55
MIN…….41 NORMAL…..38
MEAN……50 NORMAL…..47
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………… +3
TOTAL DEPARTURE FOR THE MONTH……………………… +3 [+2.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………15 DEPARTURE……. -3
TOTAL HEATING UNITS FOR THE MONTH………….. 15 DEPARTURE……. -3
TOTAL HEATING UNITS FOR THE SEASON………….342 DEPARTURE……-188
TOTAL HEATING UNITS LAST SEASON TO DATE……..474 DEPARTURE……-132
PEAK WIND GUST (MPH):
Official (1-Sec avg)…….38 WNW @ 10:31 A.M.
AEROVANE……………….39 WNW @ 10:31 A.M.
VECTOR #2 (Instantaneous)..39 @ 10:31 A.M.
DAVIS #2 ………………36 WNW @ 10:33 A.M.
RMY #2 (Instantaneous)…..39 WNW @ 10:31 A.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………28 WNW @ 10:34 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..27 @ 10:33 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 WNW @ 10:34 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 WNW @ 10:33 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE…….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE…..OUT OF SERVICE D/T RENOVATIONS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….13.8 WNW [330 total miles]
VECTOR #2……………..14.4
DAVIS #2………………14.4 WNW
RMY #2………………..14.2 WNW
RMY #1…………..OUT OF SERVICE D/T RENOVATIONS
ASOS…………….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1………..OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…………OUT OF SERVICE D/T RENOVATIONS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00 DEPARTURE….-0.15
TOTAL PRECIPITATION FOR THE MONTH………….0.00 DEPARTURE….-0.15
TOTAL PRECIPITATION FOR THE YEAR………….54.85 DEPARTURE…+10.80
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0 DEPARTURE……0.0
TOTAL SNOWFALL FOR THE MONTH……………….0.0 DEPARTURE……0.0
TOTAL SNOWFALL FOR THE SEASON (2021-2022)……0.0 DEPARTURE…..-0.7
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
10/01 64/44/54/-4/0.00/583/83 20 WNW AERO 20 WNW RMY N/A
10/02 73/47/60/+2/0.00/567/81 24 WSW AERO 23 WSW RMY N/A
10/03 65/55/60/+3/0.09/070/10 19 E AERO 19 E RMY N/A
10/04 59/51/55/-2/1.69/000/00 30 E AERO 30 E RMY N/A
10/05 58/50/54/-3/0.30/000/00 22 NNE AERO 23 NE RMY N/A
10/06 69/50/60/+4/0.00/407/59 15 N AERO 16 N RMY N/A
10/07 73/55/64/+8/0.00/550/80 15 WSW AERO 15 W RMY N/A
10/08 69/55/62/+7/T/616/90 24 ENE AERO 23 ENE RMY N/A
10/09 62/54/58/+3/0.01/273/40 23 E AERO 23 E RMY N/A
10/10 62/54/58/+3/T/000/00 22 E AERO 21 E RMY N/A
10/11 67/56/62/+8/0.01/…/.. 20 NE AERO 21 NE RMY N/A
10/12 72/54/63/+9/0.00/…/.. 15 SW AERO 15 SW RMY N/A
10/13 75/55/65/+11/0.00/…/.. 18 SW AERO 18 SW RMY N/A
10/14 73/56/65/+12/0.00/…/.. 19 N AERO 20 N RMY N/A
10/15 74/55/67/+14/0.00/…/.. 24 S AERO 24 SSW RMY N/A
10/16 73/59/66/+14/0.06/…/.. 43 S AERO 50 S RMY 44
10/17 62/47/55/+3/0.25/…/.. 32 WNW AERO 31 WNW RMY 31
10/18 60/42/51/-1/0.01/…/.. 31 NW AERO 32 NW RMY 33
10/19 59/40/50/-1/0.00/…/.. 35 WNW AERO 37 W RMY 38
10/20 70/49/60/+9/0.00/…/.. 23 W AERO 23 W RMY 23
10/21 74/56/65/+14/0.00/…/.. 30 SSW AERO 32 S RMY 32
10/22 71/51/61/+11/0.00/…/.. 27 S AERO 30 S RMY 29
10/23 60/44/52/+2/0.00/…/.. 24 NW AERO 22 NW RMY 24
10/24 57/37/47/-3/0.01/…/.. 25 NNW AERO 25 NNW RMY 25
10/25 56/47/52/+3/0.63/…/.. 29 NE AERO 30 NE RMY 32
10/26 61/47/54/+5/2.23/…/.. 49 NNE AERO 56 N RMY 54
10/27 48/44/46/-3/0.87/…/.. 66 NNE AERO 74 NNE RMY 65
10/28 48/39/44/-4/0.00/…/.. 26 NNE AERO 26 NNE RMY 28
10/29 49/37/43/-5/0.00/…/.. 25 ENE AERO 24 ENE RMY 24
10/30 59/49/54/+7/1.02/…/.. 33 E AERO 32 E RMY 33
10/31 64/51/58/+11/0.69/…/.. 33 WNW AERO 35 SW RMY 35
RECORDS FOR THE MONTH:
Peak Gust of 66 MPH NNE on the 27th, beating the old record of
54 WNW, NE set in 1968 and 2018.
Daily Precipitation of 2.23 inches on the 26th, beating the old
record of 1.57 inches in 1898.
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
11/01 59/41/50/+3/0.00/0.0/…/.. 38 WNW AERO 39 WNW RMY 39
11/02 The low since midnight is 40F, the daily normal low is 38F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR NOVEMBER 2
HIGH 81 IN 1950
LOW 22 IN 1965
PRECIP 1.67 INCHES IN 1970
SNOWFALL 1.8 IN 2014
PEAK GUST 63 WSW IN 1973
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
TODAY’S REPORT PREPARED BY: Matt Douglas
