Saturday, October 16, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, OCTOBER 16, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0558E
SUNSET: 1700E
WINDY AND WARM WITH LIMITED VISIBILITY AND SKIES CLOUDING
OVER IN THE AFTERNOON….
Today was mostly cloudy with an average visibility of 30 miles
due to either a thin fog in the morning or haze later on in the
day. Conditions are very windy with an average speed of over 20 mph
and a max gust of 43 mph. Wind has been southerly all day.
The high so far today is 73F, 12F degrees above the normal max of
61F. The low since midnight is 63F, 19 degrees above the normal
low of 44F.
Today’s Observations:
7 A.M.
Weather: Scattered Altocumulus & Altostratus, overcast
cirrostratus with breaks. Few stratus fractus
Temperature: 65F; Dew Point: 63F; Relative Humidity: 94%
Wind: SE @ 15G24 kts, peak of 35 mph S at 6:37 A.M.
Sea-level pressure: 1010.6 mb; 29.84 in. Hg: falling then rising
Visibility: 20 miles, thin fog
6-hr Max temp: 65F
6-hr Min temp: 63F
24-hr Precip: 0.00 ins.
BHO SA 1155 80 SCT 250 OVC 20 106/65/63/2015G24/984/ FEW STFRA
BINOVC THN F ALQDS PK WND 1830/37/ 8/676 50000 10065 20063
10 A.M.
Weather: Scattered altocumulus, broken cirrostratus,
few cumulus
Temperature: 71F; Dew Point: 62F; Relative Humidity: 74%
Wind: S @ 18G28 kts, peak of 31 mph S at 9:52 A.M.
Sea-level pressure: 1009.2 mb; 29.81 in Hg; falling, then more
slowly
Visibility: 35 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 75 SCT 250 BKN 35 092/71/62/1818G28/981/ FEW CU ALQDS
HAZY PK WND 1828/52/ 8/176 56014
1 P.M.
Weather: Scattered stratocumlus, broken altostratus, overcast
cirrostratus with a break to the NW
Temperature: 70F, Dew point: 62F; Relative Humidity: 76%
Wind: S @ 18G32 kts, peak of 43 mph S at 12:38 P.M.
Sea-level pressure: 1007.0 mb; 29.74 in Hg; falling, then more rapidly
Visibility: 40 miles
6-hr Max temp: 73F
6-hr Min temp: 65F
6-hr Precip: 0.00 ins.
BHO SA 1755 30 SCT 150 BKN 250 OVC 40 070/70/62/1818G32/974/ BINOVC NW
PK WND 1838/27/ 8/826 58022 10073 20065
SUMMARY FOR FRIDAY, OCTOBER 15, 2021
TEMPERATURE (DEGREES F)
MAX…….74 NORMAL…..61
MIN…….55 NORMAL…..44
MEAN……67 NORMAL…..53
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+14
TOTAL DEPARTURE FOR THE MONTH……………………..+75 [+4.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE…….-12
TOTAL HEATING UNITS FOR THE MONTH……………70 DEPARTURE…….-79
TOTAL HEATING UNITS FOR THE SEASON………….144 DEPARTURE……-123
TOTAL HEATING UNITS LAST SEASON TO DATE……..217 DEPARTURE…….-77
COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021)
TOTAL COOLING UNITS FOR YESTERDAY…………….2 DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE MONTH…………….2 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE SEASON………….716 DEPARTURE…….+40
TOTAL COOLING UNITS LAST SEASON TO DATE……..831 DEPARTURE……-115
PEAK WIND GUST (MPH):
Official……………….24 S @ 7:53 P.M.
AEROVANE (south tower)…..24 SSW @ 8:23 P.M.
VECTOR #2 (south tower)….26 @ 5:43 P.M.
DAVIS #2 (south tower)…..26 S @ 7:54 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…………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………18 S @ 7:36 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 @ 9:34 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 S @ 5:45 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 AVERAGE……..OUT OF SERVICE D/T RENOVATIONS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….. 7.8 S [188 total miles]
VECTOR #2……………… 8.6
DAVIS #2………………. 8.2 S
RMY……………..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….-0.18
TOTAL PRECIPITATION FOR THE MONTH………….2.10 DEPARTURE….-0.45
TOTAL PRECIPITATION FOR THE YEAR………….49.08 DEPARTURE….+8.12
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
10/01 64/44/54/-4/0.00/…/.. 20 WNW AERO 20 WNW RMY N/A
10/02 73/47/60/+2/0.00/…/.. 24 WSW AERO 23 WSW RMY N/A
10/03 65/55/60/+3/0.09/…/.. 19 E AERO 19 E RMY N/A
10/04 59/51/55/-2/1.69/…/.. 30 E AERO 30 E RMY N/A
10/05 58/50/54/-3/0.30/…/.. 22 NNE AERO 23 NE RMY N/A
10/06 69/50/60/+4/0.00/…/.. 15 N AERO 16 N RMY N/A
10/07 73/55/64/+8/0.00/…/.. 15 WSW AERO 15 W RMY N/A
10/08 69/55/62/+7/T/…/.. 24 ENE AERO 23 ENE RMY N/A
10/09 62/54/58/+3/0.01/…/.. 23 E AERO 23 E RMY N/A
10/10 62/54/58/+3/T/…/.. 22 E AERO 21 E RMY N/A
10/11 67/56/62/+8/0.01/…/.. 20 NE AERO 21 NE RMY N/A
10/12 72/54/63/+9/0.00/…/.. 15 SW AERO 15 SW RMY N/A
10/13 75/55/65/+11/0.00/…/.. 18 SW AERO 18 SW RMY N/A
10/14 73/56/65/+12/0.00/…/.. 19 N AERO 20 N RMY N/A
10/15 74/55/67/+14/0.00/…/.. 24 S AERO 24 SSW RMY N/A
10/16 The low since midnight is 63F, the daily normal low is 44F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 16
HIGH 86F IN 1897
LOW 28F IN 1886
PRECIP 2.82 INCHES IN 1974
SNOWFALL TRACE IN 2009
PEAK GUST 68e MPH SSE IN 1954 (HURRICANE HAZEL)
RECORDS FOR OCTOBER 17
HIGH 86F IN 1947
LOW 25F IN 1886
PRECIP 1.87 INCHES IN 1989
SNOWFALL TRACE IN 1970
PEAK GUST 61 MPH E IN 2019
TODAY’S REPORT PREPARED BY: Benjamin Turner
