Monday, August 30, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, AUGUST 30, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0508E
SUNSET: 1821E
WARMER AND MORE HUMID WEATHER RETURNS….
Today marks the 3rd day in a row that has again featured a lot of
cloud cover. However warmer and more humid air has returned to the
region with temperatures getting back into the low to mid 80s.
Humidity levels have returned to uncomfortable levels as the dew
point has risen from the upper 60s this morning to the low 70s this
afternoon.
Some saving grace has been the wind. A South to southwest wind has
been busy today averaging around 10-15mph since early this morning.
Frequent gusts of 20-25mph have been observed.
Visibility has been limited today thanks to the increase in moisture
in the air. Values have been hanging between 20-30 miles.
The high so far today is 84F, this is 6 degrees above the daily
normal maximum of 78F. The low so far today is 67F, which is 6
degrees above the daily normal minimum of 61F.
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, overcast cirrus, few thin spots in overcast,
few stratus fractus distant all quadrants
Temperature: 69F; Dew Point: 67F; Relative Humidity: 93%
Wind: SSW @ 12G17 kts
Sea-level pressure: 1014.8 mb; 29.97 in. Hg; steady, then falling
Visibility: 20 miles, thin fog
6-hr Max temp: 69F
6-hr Min temp: 67F
24-hr Precip: TRACE
BHO SA 1155 E50 BKN 250 OVC 20 148/69/67/2012G17/997/ FEW THN SPTS INOVC
FEW STFRA DSNT ALQDS THN F ALQDS SUN DMLY VSBL/ 8/502 58012 70000 10069 20067
10 A.M.
Weather: Broken stratocumulus, broken cumulus, broken cirrostratus,
overcast cirrus
Temperature: 77F; Dew Point: 71F; Relative Humidity: 82%
Wind: SSW @ 12G19 kts
Sea-level pressure: 1013.3 mb; 29.92 in Hg; falling unsteadily
Visibility: 30 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 E20 BKN 30 BKN 200 BKN 250 OVC 30 133/77/71/2112G19/992/ HAZY/
8/802 57015
1 P.M.
Weather: Scattered stratocumulus, broken cumulus, broken altocumulus,
thin overcast cirrus, towering cumulus all quadrants
Temperature: 83F, Dew point: 72F; Relative Humidity: 70%
Wind: SW @ 10G17 kts
Sea-level pressure: 1010.8 mb; 29.85 in Hg; falling, then more rapidly
Visibility: 20 miles, hazy
6-hr Max temp: 84F
6-hr Min temp: 69F
6-hr Precip: 0.00 ins.
BHO SA 1755 25 SCT E35 BKN 120 BKN 250 -OVC 20 108/83/72/2310G17/985/
TCU ALQDS HAZY/ 8/871 58025 10084 20069
SUMMARY FOR SUNDAY, AUGUST 29, 2021
TEMPERATURE (DEGREES F)
MAX…….72 NORMAL…..78
MIN…….59 NORMAL…..61
MEAN……66 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….. -4
TOTAL DEPARTURE FOR THE MONTH…………………..+61 [+1.9 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……..-9
TOTAL HEATING UNITS FOR THE SEASON…………..28 DEPARTURE…….+12
TOTAL HEATING UNITS LAST SEASON TO DATE……….3 DEPARTURE…….+25
COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021)
TOTAL COOLING UNITS FOR YESTERDAY…………….1 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE MONTH…………..252 DEPARTURE…….+53
TOTAL COOLING UNITS FOR THE SEASON………….631 DEPARTURE…….+45
TOTAL COOLING UNITS LAST SEASON TO DATE……..756 DEPARTURE……-125
PEAK WIND GUST (MPH):
Official……………….20 S @ 10:54 P.M.
AEROVANE (south tower)…..21 S @ 11:00 P.M.
VECTOR #2 (south tower)….21 @ 11:01 P.M.
DAVIS #2 (south tower)…..21 S @ 9:14 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………………16 S @ 11:00 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 11:00 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 S @ 10:31 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…….6.9 S [166 total miles]
VECTOR #2……………..8.1
DAVIS #2………………7.7 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……TRACE DEPARTURE….-0.12
TOTAL PRECIPITATION FOR THE MONTH………….5.37 DEPARTURE….+1.69
TOTAL PRECIPITATION FOR THE YEAR………….40.34 DEPARTURE….+6.22
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/+10/0.00/…/.. 17 SW AERO 18 SW RMY N/A
08/26 92/72/82/+12/0.00/…/.. 19 WSW AERO 18 WSW RMY N/A
08/27 89/70/80/+10/T/…/.. 30 ENE AERO 30 ENE RMY N/A
08/28 70/59/65/-5/0.02/…/.. 34 ENE AERO 34 ENE RMY N/A
08/29 72/59/66/-4/T/…/.. 20 S AERO 21 S RMY N/A
08/30 The low since midnight is 67F, the daily normal low is 61F
RECORDS FOR THE MONTH
08/22 NEW PEAK GUST RECORD OF 47 MPH,
BEATING THE OLD RECORD OF 44 MPH IN 1987
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW IN 1965
RECORDS FOR AUGUST 31
HIGH 94F IN 1953
LOW 42F IN 1976
PRECIP 2.46 INCHES IN 1954
PEAK GUST 125 MPH SE IN 1954 [CAROL – RECORD FOR MONTH]
TODAY’S REPORT PREPARED BY: Matt Douglas
