Monday, August 31, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, AUGUST 31, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
PLEASANTLY MILD WITH DRY AIR AND CONTINUED EXCELLENT
VISIBILITY….
Today has been another very pleasant day despite more in
the way of cloudiness this afternoon than yesterday. Mild
temperatures in the low to mid 70s and low humidity has
made for another glorious day.
The wind has been very light as well helping to keep the
air comfortable despite the relatively low dew point for
this time of year. Average wind speed since 7 A.M. has only
been around 4 mph with a peak gust thus far of only 14 mph.
The visibility has been an excellent 80 miles all day,
truly impressive for late August!
The high so far today is 75F, which is 2 degrees below
the daily normal maximum of 77F. The low since midnight
is 54F, which is 6 degrees below the average of 60F.
Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus
Temperature: 59F; Dew Point: 49F; Relative Humidity: 69%
Wind: NW at 5 kts, wind light
Sea-level pressure: 30.10 ins. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 59F
6-hr Min temp: 54F
24-hr Precip: 0.00 ins.
BHO SA 1155 250 -SCT 80 193/59/49/3305/010/ WND LGT/
8/001 51023 10059 20054
10 A.M.
Weather: Thin scattered cirrus, few cumulus all quadrants,
few cirrocumulus distant SW
Temperature: 71F; Dew Point: 50F; Relative Humidity: 48%
Wind: NW at 4 kts, wind light and variable
Sea-level pressure: 30.12 ins. Hg: rising, then steady
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 250 -SCT 80 199/71/50/3304/012/ FEW CU ALQDS
FEW CC DSNT SW WND L/V/ 8/209 51006
1 P.M.
Weather: Broken cumulus, thin broken cirrus
Temperature: 73F; Dew Point: 48F; Relative Humidity: 41%
Wind: SE at 4 kts, wind light and variable
Sea-level pressure: 30.11 ins. Hg: steady, then falling
Visibility: 80 miles
6-hr Max temp: 75F
6-hr Min temp: 59F
6-hr Precip: 0.00 ins.
BHO SA 1755 E55 BKN 250 -BKN 80 198/73/48/1304/011/ WND L/V/
8/201 56001 10075 20059
SUMMARY FOR SUNDAY, AUGUST 30, 2020
TEMPERATURE (DEGREES F)
MAX…..75 NORMAL…..77
MIN…..57 NORMAL…..60
MEAN….66 NORMAL…..68
DEPARTURE FROM 30-YEAR NORMAL…………….. -2
TOTAL DEPARTURE FOR THE MONTH……………..+98 [+3.1 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY………………1 DEPARTURE……-3
TOTAL COOLING UNITS FOR THE MONTH…………….270 DEPARTURE…..+88
TOTAL COOLING UNITS FOR THE SEASON……………757 DEPARTURE….+224
TOTAL COOLING UNITS LAST SEASON TO DATE……….617 DEPARTURE….+140
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..36 W AT 12:12 A.M.
AERO…………………….36 W AT 12:10 A.M.
ASOS…………………….37 W AT 12:13 A.M.
DAVIS……………………37 W AT 12:12 A.M.
RMY N/A MERLIN N/A
FASTEST MILE FOR YESTERDAY………………….28 W AT 12:14 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….26 W AT 12:13 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………28 WNW AT 12:13 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..14.8 WNW
ASOS…………………..14.2
DAVIS………………….14.3 WNW [303 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.11
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.74 DEPARTURE……-0.18
ASOS…………..3.77
TOTAL PRECIPITATION FOR THE YEAR……….32.81 DEPARTURE……-2.10
ASOS………….33.58
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 87/66/77/+5/0.00/…/.. 18 S AERO 21 S RMY 19
08/02 85/69/77/+5/0.02/…/.. 36 S AERO 37 S RMY 38
08/03 91/75/83/+11/0.00/715/83 36 WSW AERO 38 SW RMY 36
08/04 83/71/77/5/0.21/094/11 67 SSE AERO 71 S RMY 70
08/05 90/68/79/+7/0.00/668/78 28 SW AERO 30 SW RMY 29
08/06 84/65/75/3/0.00/701/82 20 W AERO 17 W RMY 19
08/07 79/65/72/0/T/136/16 16 NE AERO 16 NE RMY N/A
08/08 83/64/74/+2/0.00/612/72 20 S AERO 20 S RMY 19
08/09 90/65/78/+6/0.00/661/78 26 SSW AERO 26 SSW RMY 26
08/10 94/69/82/+11/0.00/727/86 22 W AERO 20 W RMY 20
08/11 92/72/82/+11/0.00/…/.. 31 SSW AERO 35 SSW RMY 31 TSTM
08/12 93/74/84/+13/0.00/…/.. 22 SSW AERO 22 SW RMY 19
08/13 88/71/80/+9/0.00/…/.. 18 ENE AERO 18 NE RMY 18
08/14 82/67/75/+4/0.00/…/.. 23 ENE AERO 23 ENE RMY N/A
08/15 67/62/65/-6/T/…/.. 33 NNE AERO 32 NNE RMY N/A
08/16 69/62/66/-5/…./…/.. 26 ENE AERO 28 ENE RMY 26
08/17 73/59/66/-5/…./…/.. 25 NE AERO 24 NE RMY N/A
08/18 84/63/74/+3/…./…/.. 23 W AERO 23 W RMY 24
08/19 81/59/70/0/0.03/…/.. 26 W AERO 28 W RMY 27
08/20 80/56/68/-2/0.00/…/.. 22 W AERO 21 W RMY 22
08/21 88/61/75/+5/0.00/…/.. 28 SW AERO 26 SW RMY 28
08/22 85/66/76/+6/0.26/…/.. 18 NNE AERO 16 S RMY 16
08/23 89/63/76/+6/2.21/…/.. 60 WNW AERO 53 WNW RMY 58 TSTM HAIL
08/24 87/67/77/+7/0.00/…/.. 18 S AERO 18 S RMY 19 TSTM
08/25 86/65/76/+7/0.01/…/.. 35 NNW AERO 37 NNW RMY 35
08/26 74/56/65/-4/0.00/…/.. 29 NW AERO 32 NW RMY N/A
08/27 68/57/63/-6/0.33/…/.. 18 SSE AERO 20 SSE RMY 20 TSTM
08/28 80/59/70/+1/0.00/…/.. 20 W AERO 20 W RMY N/A
08/29 74/65/70/+1/0.06/…/.. 32 W AERO 32 W RMY N/A
08/30 75/57/66/-2/0.00/…/.. 36 W AERO 36 W RMY N/A
08/31 The low since midnight is 54F, the daily normal low is 60F
DAILY RECORDS FOR AUGUST 2020
8/23/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 89F,
BREAKS PREVIOUS RECORD of 88F SET IN 1918, 1947, 1949, 1996
8/23/20: DAILY RECORD PRECIPITATION OF 2.21 INS,
BREAKS PREVIOUS RECORD OF 2.09 INS SET IN 2010
8/23/20: DAILY RECORD PEAK WIND GUST OF 60 MPH,
TIES PREVIOUS RECORD OF 60 MPH SET IN 1940
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
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]
RECORDS FOR SEPTEMBER 1
HIGH 93F IN 1969, 2010
LOW 47F IN 1975, 2017
PRECIP 2.32 INCHES IN 2013
PEAK GUST 59e MPH S IN 1945, SSW IN 1965
TODAY’S REPORT PREPARED BY: Matt Douglas
