Wednesday, August 25, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, AUGUST 25, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0502E
SUNSET: 1830E
HOT AND HUMID WITH PARTLY CLOUDY SKIES….
Today was partly cloudy with an average visibility of 40 miles due
to haze. Wind was light and variable with an average speed of 3 mph and
a max gust of 14 mph much earlier on in the day. Pressure rose overnight,
but conditions remained humid with dew points hanging in the low 70’s and
upper 60’s. Not the best weather for a hike!
The high so far today is 89F, 10 degrees above the daily normal maximum
of 79F. The low so far today is 70F, which is 8 degrees above the daily
normal minimum of 62F.
Today’s Observations:
7 A.M.
Weather: scattered altocumulus/altostratus and cirrostratus
Temperature: 74F; Dew Point: 68F; Relative Humidity: 83%
Wind: N @ 8 kts
Sea-level pressure: 1019.4 mb; 30.10 in. Hg; rising then rising
more slowly
Visibility: 25 miles, Hazy
6-hr Max temp: 74F
6-hr Min temp: 70F
24-hr Precip: Trace
BHO SA 1155 65 SCT 250 SCT 25 194/74/68/0108/010/ HAZY/ 8/086
70000 51017 10074 20070
10 A.M.
Weather: scattered cirrus
Temperature: 83F; Dew Point: 70F; Relative Humidity: 67%
Wind: W @ 3 kts, light and variable
Sea-level pressure: 1019.8 mb; 30.11 in Hg; rising then steady
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 250 SCT 40 198/83/70/2703/011/ WND L/V/ 8/086
51004
1 P.M.
Weather: Scattered cumulus and cirrus
Temperature: 87F, Dew point: 69F; Relative Humidity: 56%
Wind: W @ 2 kts, light and variable
Sea-level pressure: 1019.5 mb; 30.10 in Hg; rising slightly then falling
Visibility: 45 miles
6-hr Max temp: 89F
6-hr Min temp: 74F
6-hr Precip: 0.00 ins.
BHO SA 1755 55 SCT 250 SCT 45 195/87/69/2602/010/ WND L/V/ 8/101
58003 10089 20074
SUMMARY FOR TUESDAY, AUGUST 24, 2021
TEMPERATURE (DEGREES F)
MAX…….86 NORMAL…..79
MIN…….67 NORMAL…..62
MEAN……77 NORMAL…..71
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..+6
TOTAL DEPARTURE FOR THE MONTH…………………..+38 [+1.4 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……..-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……………12 DEPARTURE……..+6
TOTAL COOLING UNITS FOR THE MONTH…………..206 DEPARTURE…….+34
TOTAL COOLING UNITS FOR THE SEASON………….585 DEPARTURE…….+27
TOTAL COOLING UNITS LAST SEASON TO DATE……..735 DEPARTURE……-150
PEAK WIND GUST (MPH):
Official……………….21 NNW @ 5:48 A.M.
AEROVANE (south tower)…..21 NNW @ 5:05 A.M.
VECTOR #2 (south tower)….24 @ 5:45 A.M.
DAVIS #2 (south tower)…..20 N @ 5:48 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…………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 NNW @ 5:52 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 5:53 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 N @ 5:53 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 AVERAGE……..OUT OF SERVICE D/T RENOVATIONS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.8 NW [188 total miles]
VECTOR #2……………..8.8
DAVIS #2………………8.5
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……TRACE DEPARTURE….-0.12
TOTAL PRECIPITATION FOR THE MONTH………….5.35 DEPARTURE….+2.27
TOTAL PRECIPITATION FOR THE YEAR………….40.32 DEPARTURE….+6.80
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 The low since midnight is 70F, 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 25
HIGH 93F IN 1947, 1948, 2007
LOW 41F IN 1940
PRECIP 2.69 INCHES IN 2010
PEAK GUST 60e MPH SSW IN 1941
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
TODAY’S REPORT PREPARED BY: Benjamin Turner and Augustin Busschaert
