Thursday, October 14, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, OCTOBER 14, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0553E
SUNSET: 1705E
A MOSTLY CLEAR DAY WITH LIMITED VISIBILITY ATOP GREAT BLUE HILL….
Today consisted of mostly clear skies and an average visibility
of 45 miles. Conditions were warm in the lower 70’s, but humidity
continued to drop as the day went on. Wind was below 10 mph on
average with a max gust so far today of 20 mph.
The month continues to be dry, but the annual rain surplus is
still 8.47 inches.
The high so far today is 73F, 11 degrees above the normal max of
62F. The low since midnight is 56F, 11 degrees above the normal
low of 45F.
Today’s Observations:
7 A.M.
Weather: Clear, few cirrus
Temperature: 58F; Dew Point: 58F; Relative Humidity: 97%
Wind: NW @ 11G17 kts
Sea-level pressure: 1013.0 mb; 29.91 in. Hg: rising then more rapidly
Visibility: 45 miles, thin smoke layer
6-hr Max temp: 58F
6-hr Min temp: 56F
24-hr Precip: 0.00 ins.
BHO SA 1155 CLR 45 130/58/58/3311G17/991/ FEW CI THN K LYR ALQDS/
8/001 53007 10058 20056
10 A.M.
Weather: Few cumulus and cirrus
Temperature: 70F; Dew Point: 64F; Relative Humidity: 71%
Wind: N @ 8G14 kts
Sea-level pressure: 1013.4 mb; 29.93 in Hg; rising, then more slowly
Visibility: 50 miles, thin smoke layer
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 50 134/70/64/3508G14/993/ FEW CU FEW CI THN K
LYR ALQDS/ 8/102 51004
1 P.M.
Weather: Few cumulus and cirrus
Temperature: 71F, Dew point: 59F; Relative Humidity: 67%
Wind: NE @ 7G14 kts
Sea-level pressure: 1012.7 mb; 29.91 in Hg; falling steadily
Visibility: 40 miles
6-hr Max temp: 73F
6-hr Min temp: 58F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 40 127/71/59/0507G14/991/ FEW CU FEW CI/ 8/101 57007
10073 20058
SUMMARY FOR WEDNESDAY, OCTOBER 13, 2021
TEMPERATURE (DEGREES F)
MAX…….75 NORMAL…..62
MIN…….55 NORMAL…..45
MEAN……65 NORMAL…..54
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+11
TOTAL DEPARTURE FOR THE MONTH……………………..+49 [+3.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE…….-11
TOTAL HEATING UNITS FOR THE MONTH……………70 DEPARTURE…….-55
TOTAL HEATING UNITS FOR THE SEASON………….144 DEPARTURE…….-98
TOTAL HEATING UNITS LAST SEASON TO DATE……..209 DEPARTURE…….-65
COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….0 DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE SEASON………….714 DEPARTURE…….+39
TOTAL COOLING UNITS LAST SEASON TO DATE……..831 DEPARTURE……-117
PEAK WIND GUST (MPH):
Official……………….18 SW @ 11:14 A.M.
AEROVANE (south tower)…..18 SW @ 6:03 P.M.
VECTOR #2 (south tower)….19 @ 11:14 A.M.
DAVIS #2 (south tower)…..18 WSW @ 11:14 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…………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 W @ 11:14 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14 @ 6:21 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 W @ 6:20 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 AVERAGE……..OUT OF SERVICE D/T RENOVATIONS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….. 8.3 WSW [198 total miles]
VECTOR #2……………… 9.1
DAVIS #2………………. 8.9 WSW
RMY……………..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….-0.17
TOTAL PRECIPITATION FOR THE MONTH………….2.10 DEPARTURE….-0.10
TOTAL PRECIPITATION FOR THE YEAR………….49.08 DEPARTURE….+8.47
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/…/.. 20 WNW AERO 20 WNW RMY N/A
10/02 73/47/60/+2/0.00/…/.. 24 WSW AERO 23 WSW RMY N/A
10/03 65/55/60/+3/0.09/…/.. 19 E AERO 19 E RMY N/A
10/04 59/51/55/-2/1.69/…/.. 30 E AERO 30 E RMY N/A
10/05 58/50/54/-3/0.30/…/.. 22 NNE AERO 23 NE RMY N/A
10/06 69/50/60/+4/0.00/…/.. 15 N AERO 16 N RMY N/A
10/07 73/55/64/+8/0.00/…/.. 15 WSW AERO 15 W RMY N/A
10/08 69/55/62/+7/T/…/.. 24 ENE AERO 23 ENE RMY N/A
10/09 62/54/58/+3/0.01/…/.. 23 E AERO 23 E RMY N/A
10/10 62/54/58/+3/T/…/.. 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 The low since midnight is 56F, the daily normal low is 45F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 14
HIGH 79F IN 2000
LOW 28F IN 1958
PRECIP 2.69 INCHES IN 1990
SNOWFALL 2.0 INCHES IN 1913
PEAK GUST 63e W IN 1976
RECORDS FOR OCTOBER 15
HIGH 83F IN 1897
LOW 29F IN 1887,1937
PRECIP 4.58 INCHES IN 2005
SNOWFALL TRACE IN 1961,1972
PEAK GUST 69 MPH W IN 2003
TODAY’S REPORT PREPARED BY: Benjamin Turner
