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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, SEPTEMBER 12, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0521E
SUNSET: 1759E
DRIZZLE AND FOG THIS MORNING LIFTED, BUT SKIES REMAIN OVERCAST….
Clouds are once again ruling the sky locally today while
sunshine is being observed not too far away to the north of the
hill. So far we’ve yet to see even any dim sunshine as the low
clouds are hanging tough. Drizzle and fog overnight continued
into early this morning before lifting during the mid morning
hours. We did manage to pick up 0.09″ of rain overnight as a
few “heavier” rain showers moved through last evening. Another
0.01″ was measured between 7am and 10am this morning from
drizzle.
Temperatures have been held down thus far due to the overcast
skies. The high so far is only 71F degrees!
The dew point has been on the rise all day with readings reaching
the upper 60s by early this afternoon. As such, it feels pretty
humid out there today.
The wind has been quite light (almost non-existent at times) today
with an average speed only around 7mph and a peak of only 14mph
which occurred around midnight!
Visibility has been gradually increasing as the day progresses.
It was as low as 1/16th of a mile this morning, but has improved
to around 60 miles this afternoon despite the humid airmass in
place.
The high so far today is 71F, which is 3 degrees below the
normal maximum of 74F. The low since midnight is 62F, which is
5 degrees above the normal minimum of 57F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 100ft, very light drizzle
Temperature: 64F; Dew Point: 64F; Relative Humidity: 100%
Wind: SSW @ 6 kts, wind light
Sea-level pressure: 1012.5 mb; 29.90 in. Hg: falling, then more rapidly
Visibility: 1/8 mile, fog
6-hr Max temp: 64F
6-hr Min temp: 62F
24-hr Precip: 0.09 ins.
BHO SA 1155 X W1 1/8L-F 125/64/64/2006/990/ PCPN VRY LGT WND LGT/
8//// 58014 6003/ 70009 10064 20062
10 A.M.
Weather: Broken stratocumulus, overcast stratus
Temperature: 68F; Dew Point: 66F; Relative Humidity: 93%
Wind: S @ 7 kts, wind light
Sea-level pressure: 1012.3 mb; 29.89 in Hg: falling unsteadily
Visibility: 40 miles, thin fog
3-hr Precip: 0.01 ins.
BHO SA 1455 E5 BKN 25 OVC 40 123/68/66/1907/989/ THN F ALQDS WND LGT/
8/5// 57002 6001/
1 P.M.
Weather: Overcast stratocumulus
Temperature: 70F, Dew point: 67F; Relative Humidity: 90%
Wind: S @ 2 kts, light and variable
Sea-level pressure: 1011.0 mb; 29.85 in Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 71F
6-hr Min temp: 64F
6-hr Precip: 0.01 ins.
BHO SA 1755 E10 OVC 60 110/70/67/E1802/985/ L-B37E50 WND L/V/ 8/5//
58013 6001/ 10071 20064
————————————————————–
SUMMARY FOR SUNDAY, SEPTEMBER 11, 2022
TEMPERATURE (DEGREES F)
MAX…….76 NORMAL…..75
MIN…….62 NORMAL…..57
MEAN……69 NORMAL…..66
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+3
TOTAL DEPARTURE FOR THE MONTH………………….-1 [-0.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH…………….7 DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE SEASON……………7 DEPARTURE…….-26
TOTAL HEATING UNITS LAST SEASON TO DATE………38 DEPARTURE…….-31
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….4 DEPARTURE……..+1
TOTAL COOLING UNITS FOR THE MONTH……………34 DEPARTURE……..-9
TOTAL COOLING UNITS FOR THE SEASON………….870 DEPARTURE……+231
TOTAL COOLING UNITS LAST SEASON TO DATE……..672 DEPARTURE……+198
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….22 WSW @ 9:46 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..23 @ 9:43 P.M.
DAVIS #2 ………………21 WSW @ 10:05 P.M.
RMY #2 (Instantaneous)…..23 WSW @ 9:43 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………………14 WSW @ 9:46 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 9:47 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 WSW @ 9:47 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 WSW @ 9:47 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……..7.9 W [190 total miles]
VECTOR #2………………9.0
DAVIS #2……………….8.9 W
RMY #2…………………8.9 W
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……..0.09 DEPARTURE…..-0.03
TOTAL PRECIPITATION FOR THE MONTH…………..2.50 DEPARTURE…..+1.19
TOTAL PRECIPITATION FOR THE YEAR…………..26.08 DEPARTURE…..-9.84
————————————————————–
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 AERE N/A RMY 23
9/12 The low since midnight is 62F, the daily normal low is 57F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR SEPTEMBER 12
HIGH 92F IN 1961
LOW 42F IN 1958,1967,1985
PRECIP 2.79 INCHES IN 1960 (HURRICANE DONNA)
PEAK GUST 140 MPH SSE IN 1960 (HURRICANE DONNA)
RECORDS FOR SEPTEMBER 13
HIGH 91F IN 1957
LOW 40F IN 1985
PRECIP 3.10 INCHES IN 1987
PEAK GUST 44 MPH WNW IN 1986
TODAY’S REPORT PREPARED BY: Matt Douglas
