Tuesday, September 13, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, SEPTEMBER 13, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0522E
SUNSET: 1757E
SOME BREAKS OF SUN DEVELOPING AFTER A PERIOD OF RAIN THIS MORNING….
A period of rain this morning brought a nice soaking to the hill
with 0.26″ being measured between 7am and 1pm. This brings the
monthly total to 2.78″ and potentially more to come this evening
as a cold front approaches the region.
The rain ended before noon. Clouds have been attempting to break
a bit since with a few brief splashes of sunshine being noted.
Temperatures are starting to respond to the solar insolation with
readings into the low 70s by the 1pm observation.
The dew point remains on the high side with readings around 70F,
as such, it feels quite humid out there today.
The wind has been light again today, however it has shown signs
of increasing a bit this afternoon. The average speed has only
been around 6mph so far today, but a gust of 18mph has been
measured just before the 1pm observation.
Visibility has been gradually improving now that the fog has
burned off. It was as low as 1/16th of a mile this morning, but
has improved to around 30 miles this afternoon.
The high so far today is 72F, which is 2 degrees below the
normal maximum of 74F. The low since midnight is 66F, which is
9 degrees above the normal minimum of 57F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 100ft, light rain
Temperature: 67F; Dew Point: 67F; Relative Humidity: 100%
Wind: S @ 4 kts, wind light
Sea-level pressure: 1010.1 mb; 29.83 in. Hg: falling, then rising
Visibility: 1/16 mile, fog
6-hr Max temp: 67F
6-hr Min temp: 66F
24-hr Precip: 0.02 ins.
BHO SA 1155 X W1 1/16R-F 101/67/67/1904/983/ L-E10 R-B55 WND LGT/
8//// 53003 6001/ 70002 10067 20066
10 A.M.
Weather: Broken stratus fractus, overcast nimbostratus, light rain
Temperature: 68F; Dew Point: 68F; Relative Humidity: 100%
Wind: SE @ 5 kts, wind light
Sea-level pressure: 1010.1 mb; 29.83 in Hg: falling, then rising
Visibility: 2 miles, fog
3-hr Precip: 0.24 ins.
BHO SA 1455 E3 BKN 15 OVC 2R-F 101/68/68/1305/983/ WND LGT/
8/7// 55000 6024/
1 P.M.
Weather: Scattered stratus fractus, broken stratocumulus, broken cumulus,
broken altocumulus
Temperature: 72F, Dew point: 69F; Relative Humidity: 90%
Wind: S @ 9G16 kts
Sea-level pressure: 1009.3 mb; 29.80 in Hg: falling, then more rapidly
Visibility: 30 miles, thin fog
6-hr Max temp: 72F
6-hr Min temp: 67F
6-hr Precip: 0.26 ins.
BHO SA 1755 E6 SCT 15 BKN 30 BKN 100 BKN 30 093/72/69/1709G16/980/
THN F ALQDS/ 8/870 58008 6026/ 10072 20067
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SUMMARY FOR MONDAY, SEPTEMBER 12, 2022
TEMPERATURE (DEGREES F)
MAX…….74 NORMAL…..74
MIN…….62 NORMAL…..57
MEAN……68 NORMAL…..66
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+2
TOTAL DEPARTURE FOR THE MONTH………………….+1 [-0.1 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……..-7
TOTAL HEATING UNITS FOR THE SEASON……………7 DEPARTURE…….-29
TOTAL HEATING UNITS LAST SEASON TO DATE………38 DEPARTURE…….-31
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….3 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH……………37 DEPARTURE……..-9
TOTAL COOLING UNITS FOR THE SEASON………….873 DEPARTURE……+231
TOTAL COOLING UNITS LAST SEASON TO DATE……..677 DEPARTURE……+196
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….14 WSW @ 12:01 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..14 @ 12:04 A.M.
DAVIS #2 ………………16 S @ 7:59 A.M.
RMY #2 (Instantaneous)…..15 WSW @ 12:04 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………………10 SW @ 1:50 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..11 @ 12:01 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………11 WSW @ 12:05 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..11 SSW @ 8:22 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……..4.9 SSW [117 total miles]
VECTOR #2………………5.8
DAVIS #2……………….5.3 SSW
RMY #2…………………5.9 SSW
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……..0.02 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..2.52 DEPARTURE…..+1.08
TOTAL PRECIPITATION FOR THE YEAR…………..26.10 DEPARTURE…..-9.95
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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 The low since midnight is 66F, 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 13
HIGH 91F IN 1957
LOW 40F IN 1985
PRECIP 3.10 INCHES IN 1987
PEAK GUST 44 MPH WNW IN 1986
RECORDS FOR SEPTEMBER 14
HIGH 90F IN 1931
LOW 34F IN 1911
PRECIP 2.90 INCHES IN 1944 (Great Atlantic Hurricane in 1944)
PEAK GUST 96e MPH E IN 1944 (Great Atlantic Hurricane in 1944)
TODAY’S REPORT PREPARED BY: Matt Douglas
