Sunday, August 22, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, AUGUST 22, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0459E
SUNSET: 1834E
TROPICAL STORM HENRI BRINGS SOME RAIN AND WIND TO BLUE HILL…
Tropical storm Henri approached and moved into southern New England
today, bringing periods of rain and gusty winds to the region.
0.15″ of rain was measured at 7 A.M. this morning, with an additional
0.63″ falling by 1 P.M. The storm through 1 P.M. stands at 0.78″. A
feeder band rolled through between 7 A.M. and 8 A.M. with heavy rain.
0.45″ of rain fell in that hour alone.
Gusty winds also moved through with frequent gusts between 35-45mph
being observed from mid morning into the early afternoon hours. The
peak gust so far is 47 mph! This actually has set a new record peak
gust for today’s date, beating the old record of 44 mph set in 1987!
The high so far today is 74F, 6 degree below the daily normal maximum
of 80F. The low so far today is 66F, which is 4 degrees above the daily
normal minimum of 62F.
Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200 ft, heavy rain
Temperature: 67F; Dew Point: 67F; Relative Humidity: 100%
Wind: NE at 16G28 kts, peak wind 35 mph at 6:12 A.M.
Sea-level pressure: 1010.5mb; 29.84 in. Hg; Falling, then more rapidly
Visibility: 1/4 mile, fog
6-hr Max temp: 69F
6-hr Min temp: 67F
24-hr Precip: 0.15 ins.
BHO SA 1155 X W2 1/4R+F 105/67/67/0416G28/984/ L-E43R-B43 PK WND 0330/12/
8//// 58024 6015/ 70015 10069 20067
10 A.M.
Weather: Sky obscured, vertical visibility 200 ft, light rain
Temperature: 67F; Dew Point: 67F; Relative Humidity: 100%
Wind: NE @ 21G40 kts, peak wind 46 mph at 9:46 A.M.
Sea-level pressure: 1009.2mb; 29.80 in Hg; Falling, then steady
Visibility: 1/4 mile, fog
3-hr Precip: 0.61 ins.
BHO SA 1455 X W2 1/4R-F 092/67/67/0521G40/980/ PK WND 0540/46/ 8//// 56013 6061/
1 P.M.
Weather: Broken stratus fractus, overcast stratus
Temperature: 72F, Dew point: 72F; Relative Humidity: 98%
Wind: E @ 20G33 kts, peak wind 42 mph at 12:25 P.M.
Sea-level pressure: 1007.3mb; 29.75 in Hg; Falling, then more rapidly
Visibility: 7 miles, thin fog
6-hr Max temp: 74F
6-hr Min temp: 66F
6-hr Precip: 0.63 ins.
BHO SA 1755 E4 BKN 10 OVC 7 073/72/72/0920G33/975/ THN F ALQDS PK WND 0936/25/ 8/6// 58019 6063/ 10074 20066
SUMMARY FOR SATURDAY, AUGUST 21, 2021
TEMPERATURE (DEGREES F)
MAX…….86 NORMAL…..80
MIN…….69 NORMAL…..62
MEAN……78 NORMAL…..71
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+7
TOTAL DEPARTURE FOR THE MONTH…………………..28 [+1.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE SEASON…………..28 DEPARTURE…….+16
TOTAL HEATING UNITS LAST SEASON TO DATE……….1 DEPARTURE…….+27
COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021)
TOTAL COOLING UNITS FOR YESTERDAY……………13 DEPARTURE……..+7
TOTAL COOLING UNITS FOR THE MONTH…………..178 DEPARTURE…….+25
TOTAL COOLING UNITS FOR THE SEASON………….557 DEPARTURE…….+17
TOTAL COOLING UNITS LAST SEASON TO DATE……..701 DEPARTURE……-144
PEAK WIND GUST (MPH):
Official……………….17 S @ 2:09 P.M.
AEROVANE (south tower)…..17 S @ 2:11 P.M.
VECTOR #2 (south tower)….18 @ 2:09 P.M.
DAVIS #2 (south tower)…..20 S @ 1:35 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………………11 NE @ 10:32 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13 @ 1:36 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 S @ 1:37 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…… 5.3 SSE [128 total miles]
VECTOR #2……………. 6.5
DAVIS #2…………….. 6.0 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…….0.15 DEPARTURE….+0.03
TOTAL PRECIPITATION FOR THE MONTH………….3.54 DEPARTURE….+0.83
TOTAL PRECIPITATION FOR THE YEAR………….38.51 DEPARTURE….+5.36
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
08/01 77/58/68/-5/T/589/68 23 SSW AERO 24 SSW RMY N/A
08/02 78/61/70/-3/T/821/95 28 WNW AERO 28 WNW RMY N/A
08/03 76/60/68/-5/0.00/302/35 15 N AERO 16 N RMY N/A
08/04 75/61/68/-5/0.71/077/09 21 ESE AERO 21 ESE RMY N/A
08/05 68/61/65/-8/1.68/000/00 28 NE AERO 28 NE RMY N/A
08/06 85/62/74/+1/0.00/727/85 19 S AERO 20 WSW RMY N/A
08/07 88/66/77/+4/0.00/520/61 23 SW AERO 23 SW RMY N/A
08/08 80/67/74/+2/T/128/15 16 SW AERO 16 WNW RMY N/A
08/09 75/64/70/-2/0.25/076/09 22 ENE AERO 21 NE RMY N/A
08/10 78/63/71/-1/0.12/…/.. 19 S AERO 20 S RMY N/A
08/11 89/70/80/+8/0.00/…/.. 29 SSW AERO 28 SSW RMY N/A
08/12 91/71/81/+9/T/…/.. 36 WSW AERO 37 WSW RMY N/A TSTM
08/13 92/73/83/+11/0.00/…/.. 18 WSW AERO 18 WSW RMY N/A
08/14 87/69/78/+6/T/…/.. 25 W AERO 25 NNW RMY N/A
08/15 80/62/71/-1/0.00/…/.. 19 NNW AERO 20 NNW RMY N/A
08/16 78/59/69/-3/0.00/…/.. 15 S AERO 15 S RMY N/A
08/17 82/63/73/1/0.00/…/.. 22 SSW AERO 23 SSW RMY N/A
08/18 86/66/76/+5/0.00/…/.. 21 SSW AERO 22 SSW RMY N/A
08/19 81/69/75/+4/0.62/…/.. 41 S AERO 43 S RMY N/A
08/20 78/70/74/+3/0.01/…/.. 21 WSW AERO N/A RMY N/A
08/21 86/69/78/+7/0.00/…/.. 17 S AERO 17 S RMY N/A
08/22 The low since midnight is 66F, the daily normal low is 62F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 22
HIGH 90F IN 1939
LOW 42F IN 1894
PRECIP 2.28 INCHES IN 1935
PEAK GUST 44 MPH SSW IN 1987
RECORDS FOR AUGUST 23
HIGH 89F IN 2020
LOW 45F IN 1923
PRECIP 2.21 INCHES IN 2020
PEAK GUST 60e MPH NW IN 1940, 60 WNW IN 2020* [*THUNDERSTORM]
TODAY’S REPORT PREPARED BY: Matt Douglas/Augustin Busscheart
