Sunday, August 29, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, AUGUST 29, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0506E
SUNSET: 1823E
CONTINUED COOL AND COMFORTABLE UNDER MAINLY CLOUDY SKIES….
Today has again featured a lot of cloud cover, however with light wind
and comfortable humidity levels, it’s not a bad day at all. A brief
sprinkle moved through between 11am-12pm, otherwise it’s been dry.
Some showers moved through last evening bringing 0.02″ of rain to the
summit.
The wind has been light, but has slowly veered from the southeast to
southwest as the day has progressed. This is starting to usher in
higher dew point air as evident by the dew point rising from the mid
50s early this morning to the lower 60s by early this afternoon. For
now it still feels comfortable, however we’ll be back to high levels
by tomorrow.
Visibility today has been hanging around 40 miles!
The high so far today is 69F, this is 9 degrees below the daily
normal maximum of 78F. The low so far today is 59F, which is 2
degrees below the daily normal minimum of 61F.
Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus, few breaks in overcast all quadrants,
few lower stratocumulus distant all quadrants
Temperature: 62F; Dew Point: 57F; Relative Humidity: 83%
Wind: SE @ 6 kts
Sea-level pressure: 1025.5 mb; 30.28 in. Hg; falling, then rising
Visibility: 35 miles
6-hr Max temp: 62F
6-hr Min temp: 59F
24-hr Precip: 0.02 ins.
BHO SA 1155 E40 OVC 35 255/62/57/1406/028/ FEW BINOVC ALQDS FEW LWR SC DSNT ALQDS/
8/5// 55005 6000/ 70002 10062 20059
10 A.M.
Weather: Overcast stratus, few lower stratocumulus all quadrants
Temperature: 64F; Dew Point: 58F; Relative Humidity: 80%
Wind: S @ 5 kts, wind light
Sea-level pressure: 1025.4 mb; 30.28 in Hg; rising, then falling
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E40 OVC 40 254/64/58/1905/028/ FEW LWR SC ALQDS WND LGT/ 8/6// 58001
1 P.M.
Weather: Overcast stratus, few lower stratocumulus all quadrants
Temperature: 68F, Dew point: 61F; Relative Humidity: 78%
Wind: SW @ 2 kts, wind light and variable
Sea-level pressure: 1023.6 mb; 30.23 in Hg; falling, then more rapidly
Visibility: 40 miles
6-hr Max temp: 69F
6-hr Min temp: 62F
6-hr Precip: TRACE
BHO SA 1755 E30 OVC 40 236/68/61/2202/023/ FEW LWR SC ALQDS WND L/V/ 8/6//
58018 6000/ 10069 20062
SUMMARY FOR SATURDAY, AUGUST 28, 2021
TEMPERATURE (DEGREES F)
MAX…….70 NORMAL…..79
MIN…….59 NORMAL…..61
MEAN……65 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….. -5
TOTAL DEPARTURE FOR THE MONTH…………………..+65 [+2.1 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…………….0 DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE MONTH…………..251 DEPARTURE…….+57
TOTAL COOLING UNITS FOR THE SEASON………….630 DEPARTURE…….+49
TOTAL COOLING UNITS LAST SEASON TO DATE……..751 DEPARTURE……-121
PEAK WIND GUST (MPH):
Official……………….34 ENE @ 12:04 A.M.
AEROVANE (south tower)…..34 ENE @ 12:04 A.M.
VECTOR #2 (south tower)….36 @ 12:09 A.M.
DAVIS #2 (south tower)…..32 ENE @ 12:04 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………………25 E @ 12:14 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 @ 12:16 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 E @ 12:16 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…….10.9 ENE [262 total miles]
VECTOR #2……………..11.7
DAVIS #2………………11.7 E
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…….0.02 DEPARTURE….-0.10
TOTAL PRECIPITATION FOR THE MONTH………….5.37 DEPARTURE….+1.81
TOTAL PRECIPITATION FOR THE YEAR………….40.34 DEPARTURE….+6.34
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 The low since midnight is 59F, 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 29
HIGH 95F IN 1953
LOW 41F IN 1982
PRECIP 2.88 INCHES IN 1962
PEAK GUST 70e MPH S IN 1949
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
TODAY’S REPORT PREPARED BY: Matt Douglas and Augustin Busschaert
