Sunday, September 18, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, SEPTEMBER 18, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0527E
SUNSET: 1749E
BREEZY WITH WARM AND HUMID CONDITIONS RETURNING FOR A ONE DAY STANDY….
After a few very comfortable fall-like days, summer-like weather
has returned today with the temperature getting into the low 80s
and dew points into the mid 60s. Mainly high clouds have been
seen today allowing for filtered sunshine. Also a smoke layer
well up in the atmosphere is also adding a milky appearance to
the sky and is also filtering the sun to a degree. The smoke is
from wild fires out on the west coast.
The wind has also been busy today mainly out of a west-southwest
direction. Gusts have approached 30mph at times. The average
speed for the day has been around 14mph.
Visibility has been limited to 35 miles or less due to haziness,
likely a result of the added moisture in the air.
The high so far today is 81F, which is 9 degrees above the
normal maximum of 72F. The low since midnight is 57F, which is
2 degrees above the normal minimum of 55F.
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Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, few lower stratus fractus
all quadrants, smoke layer aloft
Temperature: 62F; Dew Point: 61F; Relative Humidity: 96%
Wind: SW @ 12G17 kts
Sea-level pressure: 1017.7 mb; 30.05 in. Hg: falling, then more slowly
Visibility: 20 miles, thin fog
6-hr Max temp: 62F
6-hr Min temp: 58F
24-hr Precip: 0.00 ins.
BHO SA 1155 35 SCT 20 177/62/61/2212G17/005/ FEW LWR STFRA ALQDS
THN F ALQDS K LYR ALF/ 8/500 56011 10062 20058
10 A.M.
Weather: Clear, few cirrus all quadrants, smoke layer aloft
Temperature: 73F; Dew Point: 61F; Relative Humidity: 66%
Wind: W @ 10G20 kts
Sea-level pressure: 1016.7 mb; 30.02 in Hg: falling, then more rapidly
Visibility: 30 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 30 167/73/61/2710G20/002/ FEW CI ALQDS K LYR ALF
HAZY/ 8/001 58010
1 P.M.
Weather: Thin broken cirrus, few small cumulus all quadrants,
smoke layer aloft
Temperature: 80F, Dew point: 64F; Relative Humidity: 59%
Wind: WSW @ 15G24 kts
Sea-level pressure: 1015.0 mb; 29.97 in Hg: falling, then more rapidly
Visibility: 35 miles, hazy
6-hr Max temp: 80F
6-hr Min temp: 62F
6-hr Precip: 0.00 ins.
BHO SA 1755 E250 -BKN 35 150/80/64/2515G24/997/ FEW SML CU ALQDS
K LYR ALF HAZY/ 8/101 58017 10080 20062
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SUMMARY FOR SATURDAY, SEPTEMBER 17, 2022
TEMPERATURE (DEGREES F)
MAX…….70 NORMAL…..72
MIN…….47 NORMAL…..55
MEAN……59 NORMAL…..64
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-5
TOTAL DEPARTURE FOR THE MONTH………………….-6 [-0.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….6 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH……………23 DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE SEASON…………..23 DEPARTURE…….-27
TOTAL HEATING UNITS LAST SEASON TO DATE………40 DEPARTURE…….-17
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH……………44 DEPARTURE…….-14
TOTAL COOLING UNITS FOR THE SEASON………….880 DEPARTURE……+226
TOTAL COOLING UNITS LAST SEASON TO DATE……..693 DEPARTURE……+187
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….24 SSW @ 7:07 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..25 @ 7:07 P.M.
DAVIS #2 ………………23 S @ 7:11 P.M.
RMY #2 (Instantaneous)…..24 SSW @ 7:08 P.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………………18 SSW @ 7:16 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 7:19 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 SSW @ 10:53 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 SSW @ 7:19 P.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………8.7 SW [208 total miles]
VECTOR #2……………….9.3
DAVIS #2………………..8.8 WSW
RMY #2………………….9.3 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…………..2.79 DEPARTURE…..+0.67
TOTAL PRECIPITATION FOR THE YEAR…………..26.37 DEPARTURE….-10.36
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PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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
9/1 78/59/69/0/0.00/757/96 36 WNW AERO N/A RMY 37
9/2 73/53/63/-6/0.00/762/97 19 N AERO N/A RMY 19
9/3 80/59/70/+2/0.00/673/86 23 S AERO N/A RMY 24
9/4 86/61/74/+6/0.00/554/71 20 SSW AERO N/A RMY 20
9/5 75/60/68/0/0.83/000/00 20 E AERO N/A RMY 19
9/6 63/60/62/-6/1.57/000/00 27 NE AERO N/A RMY 26
9/7 70/57/64/-3/T/309/40 22 NE AERO N/A RMY 21
9/8 71/56/64/-3/0.01/684/89 20 ENE AERO N/A RMY 20
9/9 77/55/66/-1/0.00/513/67 19 WNW AERO N/A RMY 19
9/10 85/61/73/+7/0.00/657/86 22 NW AERO N/A RMY 21
9/11 76/62/69/+3/0.06/015/02 22 WSW AERO N/A RMY 23
9/12 74/62/68/+2/0.04/121/16 14 WSW AERO N/A RMY 15
9/13 74/66/70/+5/0.28/…/.. 22 W AERO N/A RMY 22
9/14 78/56/67/+2/0.00/…/.. 29 WNW AERO N/A RMY 29
9/15 70/52/61/-4/0.00/…/.. 33 NW AERO N/A RMY 33
9/16 70/47/59/-5/0.00/…/.. 24 NNW AERO N/A RMY 24
9/17 70/47/59/-5/0.00/…/.. 24 SSW AERO N/A RMY 24
9/18 The low since midnight is 57F, the daily normal low is 55F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR SEPTEMBER 18
HIGH 88F IN 1906
LOW 36F IN 1919
PRECIP 4.25 INCHES IN 1996
PEAK GUST 77e MPH WNW IN 1948
RECORDS FOR SEPTEMBER 19
HIGH 87F IN 1906,1983
LOW 37F IN 1929
PRECIP 3.69 INCHES IN 1936
PEAK GUST 55 MPH S IN 2012
TODAY’S REPORT PREPARED BY: Matt Douglas
