Thursday, August 26, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, AUGUST 26, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0503E
SUNSET: 1829E
ALMOST CLEAR SKIES WITH MORE HEAT AND HUMIDITY….
Today was mostly sunny with an average visibility of 40 miles due
to haze. Wind was light and variable with an average speed of 4 mph and
a max gust of 15 mph much earlier on in the day. Pressure fell overnight,
but conditions remained humid with dew points hanging in the low 70’s and
upper 60’s. Still not the best weather for a hike!
Anybody else ready for fall?
The high so far today is 91F, 12 degrees above the daily normal maximum
of 79F. The low so far today is 72F, which is 11 degrees above the daily
normal minimum of 61F.
Today’s Observations:
7 A.M.
Weather: Few cirrus
Temperature: 75F; Dew Point: 67F; Relative Humidity: 76%
Wind: W @ 10 kts
Sea-level pressure: 1020.1 mb; 30.12 in. Hg; rising then falling
Visibility: 20 miles, hazy
6-hr Max temp: 75F
6-hr Min temp: 72F
24-hr Precip: 0.00 ins.
BHO SA 1155 CLR 20 201/75/67/2710/012/ FEW CI ALQDS HAZY/ 8/001
50008 10075 20072
10 A.M.
Weather: Few cirrus
Temperature: 86F; Dew Point: 66F; Relative Humidity: 52%
Wind: NW @ 4 kts, light and variable
Sea-level pressure: 1019.9 mb; 30.11 in Hg; falling steadily
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 40 199/86/66/3104/011/ FEW CI ALQDS WND L/V/ 8/001
57002
1 P.M.
Weather: Few cumulus
Temperature: 90F, Dew point: 72F; Relative Humidity: 56%
Wind: W @ 4 kts, light and variable
Sea-level pressure: 1018.8 mb; 30.08 in Hg; falling, then more rapidly
Visibility: 50 miles
6-hr Max temp: 91F
6-hr Min temp: 75F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 50 188/90/72/2704/008/ FEW CU ALQDS WND L/V/ 8/100 58011
10091 20075
SUMMARY FOR WEDNESDAY, AUGUST 25, 2021
TEMPERATURE (DEGREES F)
MAX…….89 NORMAL…..79
MIN…….70 NORMAL…..62
MEAN……80 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+10
TOTAL DEPARTURE FOR THE MONTH…………………..+48 [+1.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-7
TOTAL HEATING UNITS FOR THE SEASON…………..27 DEPARTURE…….+14
TOTAL HEATING UNITS LAST SEASON TO DATE……….1 DEPARTURE…….+28
COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021)
TOTAL COOLING UNITS FOR YESTERDAY……………15 DEPARTURE……..+9
TOTAL COOLING UNITS FOR THE MONTH…………..221 DEPARTURE…….+28
TOTAL COOLING UNITS FOR THE SEASON………….600 DEPARTURE…….+27
TOTAL COOLING UNITS LAST SEASON TO DATE……..746 DEPARTURE……-146
PEAK WIND GUST (MPH):
Official……………….17 SW @ 10:20 P.M.
AEROVANE (south tower)…..18 SW @ 10:21 P.M.
VECTOR #2 (south tower)….18 @ 10:20 P.M.
DAVIS #2 (south tower)…..18 SW @ 10:21 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………………12 SW @ 10:19 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13 @ 10:22 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 WSW @ 10:22 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…….6.5 W [155 total miles]
VECTOR #2……………..7.7
DAVIS #2………………7.4
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….-0.12
TOTAL PRECIPITATION FOR THE MONTH………….5.35 DEPARTURE….+2.15
TOTAL PRECIPITATION FOR THE YEAR………….40.32 DEPARTURE….+6.68
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/-1/0.12/203/24 19 S AERO 20 S RMY N/A
08/11 89/70/80/+8/0.00/667/79 29 SSW AERO 28 SSW RMY N/A
08/12 91/71/81/+9/T/580/69 36 WSW AERO 37 WSW RMY N/A TSTM
08/13 92/73/83/+11/0.00/696/83 18 WSW AERO 18 WSW RMY N/A
08/14 87/69/78/+6/T/601/72 25 W AERO 25 NNW RMY N/A
08/15 80/62/71/-1/0.00/800/96 19 NNW AERO 20 NNW RMY N/A
08/16 78/59/69/-3/0.00/564/68 15 S AERO 15 S RMY N/A
08/17 82/63/73/1/0.00/555/67 22 SSW AERO 23 SSW RMY N/A
08/18 86/66/76/+5/0.00/338/41 21 SSW AERO 22 SSW RMY N/A
08/19 81/69/75/+4/0.62/222/27 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 74/66/70/-1/0.78/…/.. 47 ESE AERO 48 ESE RMY N/A
08/23 83/68/76/+5/1.17/…/.. 25 SSE AERO 26 SSE RMY N/A TSTM
08/24 86/67/77/+6/0.01/…/.. 21 NNW AERO 21 NNW RMY N/A
08/25 89/70/80/+10/…./…/.. 17 SW AERO 18 SW RMY N/A
08/26 The low since midnight is 72F, the daily normal low is 61F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 26
HIGH 96F IN 1900, 1948
LOW 46F IN 1885
PRECIP 5.85 INCHES IN 1924
PEAK GUST 55e MPH NNW IN 1947
RECORDS FOR AUGUST 27
HIGH 99F IN 1948
LOW 44F IN 1885
PRECIP 2.77 INCHES IN 1946
PEAK GUST 48 MPH NW IN 1983
TODAY’S REPORT PREPARED BY: Benjamin Turner
