Sunday, September 11, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, SEPTEMBER 11, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0520E
SUNSET: 1801E
CLOUDY AND HUMID WITH A FEW LIGHT RAIN SHOWERS DEVELOPING….
Cloudy skies have been the theme today with only a brief period
of some filtered sunshine during the mid morning hours. A few
light rain showers have been moving through starting during the
late morning hours into this afternoon. So far only a trace of
rain has been measured.
Temperatures did make it into the mid 70s before the showers
arrived. Since then the mercury has settled back to the low 70s.
The dew point has been on the rise all day as well with readings
pushing the mid 60s early this afternoon. As such, especially
when compared to the past few days, it feels pretty humid out
there today.
The wind has been quite light (translated: boring!) today with
an average speed only around 8mph.
Visibility has been limited to 40 miles all day due to the
increase in moisture in the air.
The high so far today is 76F, which is 1 degree above the
normal maximum of 75F. The low since midnight is 67F, which is
10 degrees above the normal minimum of 57F.
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus, overcast cirrostratus, few breaks
in overcast all quadrants
Temperature: 70F; Dew Point: 59F; Relative Humidity: 68%
Wind: NW @ 6 kts, wind light
Sea-level pressure: 1021.2 mb; 30.161 in. Hg: falling, then more slowly
Visibility: 40 miles
6-hr Max temp: 71F
6-hr Min temp: 67F
24-hr Precip: 0.00 ins.
BHO SA 1155 150 SCT E200 OVC 40 212/70/59/3106/016/ FEW BINOVC ALQDS
WND LGT/ 8/057 56004 10071 20067
10 A.M.
Weather: Broken altocumulus, overcast cirrostratus, few thin spots
in overcast overhead-N
Temperature: 75F; Dew Point: 63F; Relative Humidity: 67%
Wind: W @ 4 kts, wind light
Sea-level pressure: 1020.4 mb; 30.13 in Hg: falling, then more slowly
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E150 BKN 200 OVC 40 204/75/63/2804/013/ FEW THN SPTS IOVC
OVHD-N WND LGT/ 8/057 56008
1 P.M.
Weather: Broken altocumulus, overcast altostratus, very light rain shower
Temperature: 72F, Dew point: 64F; Relative Humidity: 76%
Wind: W @ 6 kts, wind light
Sea-level pressure: 1019.5 mb; 30.11 in Hg: falling, then more rapidly
Visibility: 40 miles
6-hr Max temp: 76F
6-hr Min temp: 70F
6-hr Precip: Trace
BHO SA 1755 E80 BKN 100 BKN 150 OVC 40RW- 195/72/64/2806/011/ RW-B21
PCPN VRY LGT WND LGT/ 8/07/ 58009 6000/ 10076 20070
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SUMMARY FOR SATURDAY, SEPTEMBER 10, 2022
TEMPERATURE (DEGREES F)
MAX…….85 NORMAL…..75
MIN…….61 NORMAL…..58
MEAN……73 NORMAL…..66
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+7
TOTAL DEPARTURE FOR THE MONTH………………….-4 [-0.6 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……..-6
TOTAL HEATING UNITS FOR THE SEASON……………7 DEPARTURE…….-24
TOTAL HEATING UNITS LAST SEASON TO DATE………36 DEPARTURE…….-29
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….8 DEPARTURE……..+5
TOTAL COOLING UNITS FOR THE MONTH……………30 DEPARTURE…….-10
TOTAL COOLING UNITS FOR THE SEASON………….866 DEPARTURE……+230
TOTAL COOLING UNITS LAST SEASON TO DATE……..672 DEPARTURE……+194
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….22 NW @ 3:39 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..22 @ 3:39 A.M.
DAVIS #2 ………………19 NW @ 12:28 A.M.
RMY #2 (Instantaneous)…..21 NW @ 3:39 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………………15 NW @ 1:01 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 3:41 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 NW @ 12:30 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 NW @ 3:41 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……..6.6 NW [158 total miles]
VECTOR #2………………7.6
DAVIS #2……………….7.2 NW
RMY #2…………………7.5 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…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..2.41 DEPARTURE…..+1.22
TOTAL PRECIPITATION FOR THE YEAR…………..25.99 DEPARTURE…..-9.81
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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/…/.. 36 WNW AERO N/A RMY 37
9/2 73/53/63/-6/0.00/…/.. 19 N AERO N/A RMY 19
9/3 80/59/70/+2/0.00/…/.. 23 S AERO N/A RMY 24
9/4 86/61/74/+6/0.00/…/.. 20 SSW AERO N/A RMY 20
9/5 75/60/68/0/0.83/…/.. 20 E AERO N/A RMY 19
9/6 63/60/62/-6/1.57/…/.. 27 NE AERO N/A RMY 26
9/7 70/57/64/-3/T/…/.. 22 NE AERO N/A RMY 21
9/8 71/56/64/-3/0.01/…/.. 20 ENE AERO N/A RMY 20
9/9 77/55/66/-1/0.00/…/.. 19 WNW AERO N/A RMY 19
9/10 85/61/73/+7/0.00/…/.. 22 NW AERO N/A RMY 21
9/11 The low since midnight is 67F, 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 11
HIGH 93F IN 1983, 2013
LOW 37F IN 1917
PRECIP 5.23 INCHES IN 1954 (HURRICANE EDNA)
PEAK GUST 101 MPH NW IN 1954 (HURRICANE EDNA)
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)
TODAY’S REPORT PREPARED BY: Matt Douglas
