Saturday, September 17, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, SEPTEMBER 17, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0526E
SUNSET: 1750E
COOL AND AUTUMN-LIKE WITH SUNNY CONDITIONS ALL DAY….
We observed amazing weather today, with visibility of 85 miles
and nearly cloudless skies. Wind was lighter in comparison to
previous days, shifting from NE to SW as the day went on. The
average speed was around 5 mph.
Weather remains quiet as our rainfall deficit builds. Our
rain deficit as of today is -10.21 inches on the year. Dew
points dropped into the upper 30’s today!
The high so far today is 67F, which is 5 degrees below the
normal maximum of 72F. The low since midnight is 47F, which is
8 degrees below the normal minimum of 55F.
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Today’s Observations:
7 A.M.
Weather: Clear, few thin cirrocumulus
Temperature: 51F; Dew Point: 43F; Relative Humidity: 72%
Wind: NNE @ 7 kts
Sea-level pressure: 1025.7 mb; 30.29 in. Hg: rising, then
more slowly
Visibility: 85 miles
6-hr Max temp: 53F
6-hr Min temp: 47F
24-hr Precip: 0.00 ins.
BHO SA 1155 CLR 85 257/51/43/0207/029/ FEW THN CC ALQDS/
8/009 51012 10053 20047
10 A.M.
Weather: Clear, few small cumulus and thin cirrus
Temperature: 62F; Dew Point: 39F; Relative Humidity: 42%
Wind: ENE @ 5 kts, light
Sea-level pressure: 1024.9 mb; 30.27 in Hg: falling, then
more slowly
Visibility: 85 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 85 249/62/39/0605/027/ FEW SML CU FEW THN CI
ALQDS WND LGT/ 8/101 56008
1 P.M.
Weather: Scattered thin cirrus, few small cumulus
Temperature: 67F, Dew point: 42F; Relative Humidity: 40%
Wind: SW @ 5 kts, light
Sea-level pressure: 1023.0 mb; 30.19 in Hg: falling, then
more rapidly
Visibility: 85 miles
6-hr Max temp: 67F
6-hr Min temp: 51F
6-hr Precip: 0.00 ins.
BHO SA 1755 250 -SCT 85 230/67/42/2205/019/ FEW SML CU ALQDS WND LGT/
8/101 58019 10067 20051
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SUMMARY FOR FRIDAY, SEPTEMBER 16, 2022
TEMPERATURE (DEGREES F)
MAX…….70 NORMAL…..73
MIN…….47 NORMAL…..56
MEAN……59 NORMAL…..64
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-5
TOTAL DEPARTURE FOR THE MONTH………………….-1 [-0.5 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……………17 DEPARTURE…….-11
TOTAL HEATING UNITS FOR THE SEASON…………..17 DEPARTURE…….-29
TOTAL HEATING UNITS LAST SEASON TO DATE………38 DEPARTURE…….-21
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…….-12
TOTAL COOLING UNITS FOR THE SEASON………….880 DEPARTURE……+229
TOTAL COOLING UNITS LAST SEASON TO DATE……..693 DEPARTURE……+187
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….24 NNW @ 9:20 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..26 @ 9:22 P.M.
DAVIS #2 ………………22 N @ 9:38 A.M.
RMY #2 (Instantaneous)…..24 NNW @ 9:38 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………………16 NW @ 9:23 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 1:11 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 NW @ 1:02 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 NW @ 1:11 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………9.8 NW [236 total miles]
VECTOR #2………………10.5
DAVIS #2……………….10.3 NNW
RMY #2…………………10.3 NW
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…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..2.79 DEPARTURE…..+0.82
TOTAL PRECIPITATION FOR THE YEAR…………..26.37 DEPARTURE….-10.21
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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/…./…/.. 22 W AERO N/A RMY 22
9/14 78/56/67/+2/…./…/.. 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 The low since midnight is 47F, 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 17
HIGH 87F IN 2015
LOW 38F IN 1959
PRECIP 2.73 INCHES IN 1933
PEAK GUST 60 MPH WNW IN 1999
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
TODAY’S REPORT PREPARED BY: Benjamin Turner
