Tuesday, September 1, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, SEPTEMBER 1, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
ANOTHER PLEASANTLY MILD DAY WITH CONTINUED EXCELLENT
VISIBILITY….
A mix of sun and clouds has been the theme today, but
our pleasant air mass remains over the region with mild
temperatures and comfortable humidity levels. All in
all it’s been another splendid day to start the new
month!
The wind has been light, but steady out of the southeast
most of the day. Average wind speed since 7 A.M. has only
been around 8 mph with a peak gust thus far of 21 mph.
The visibility has been an excellent 60-70 miles all day.
The high so far today is 76F, which is the daily normal
maximum for today. The low since midnight is 59F, which is
is the normal minimum for today.
Today’s Observations:
7 A.M.
Weather: Thin broken cirrus, few cumulus offshore distant
E and distant S, few altocumulus/altocumulus castellanus
distant all quadrants
Temperature: 64F; Dew Point: 55F; Relative Humidity: 72%
Wind: SE at 8 kts
Sea-level pressure: 30.21 ins. Hg: rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 64F
6-hr Min temp: 59F
24-hr Precip: 0.00 ins.
BHO SA 1155 E250 -BKN 60 231/64/55/1208/021/ FEW CU OFFSHR DSNT E
AND DSNT S FEW AC/ACC DSNT ALQDS/ 8/281 51006 10064 20059
10 A.M.
Weather: Scattered cumulus, scattered altocumulus,
thin broken cirrus
Temperature: 71F; Dew Point: 56F; Relative Humidity: 59%
Wind: SE at 5 kts, wind light
Sea-level pressure: 30.22 ins. Hg: rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 30 SCT 100 SCT E250 -BKN 70 232/71/56/1405/022/
WND LGT/ 8/231 50001
1 P.M.
Weather: Scattered cumulus/stratocumulus, broken altocumulus,
thin broken cirrus
Temperature: 72F; Dew Point: 58F; Relative Humidity: 61%
Wind: SE at 7 kts
Sea-level pressure: 30.19 ins. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 76F
6-hr Min temp: 64F
6-hr Precip: 0.00 ins.
BHO SA 1755 35 SCT E60 BKN 250 -BKN 70 222/72/58/1307/019/
8/461 58010 10076 20064
SUMMARY FOR MONDAY, AUGUST 31, 2020
TEMPERATURE (DEGREES F)
MAX…..75 NORMAL…..77
MIN…..54 NORMAL…..60
MEAN….65 NORMAL…..68
DEPARTURE FROM 30-YEAR NORMAL…………….. -3
TOTAL DEPARTURE FOR THE MONTH……………..+95 [+2.9 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………. 0 DEPARTURE……-4
TOTAL COOLING UNITS FOR THE MONTH…………….270 DEPARTURE…..+84
TOTAL COOLING UNITS FOR THE SEASON……………757 DEPARTURE….+220
TOTAL COOLING UNITS LAST SEASON TO DATE……….622 DEPARTURE….+135
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..20 S AT 8:16 P.M.
AERO…………………….20 S AT 8:17 P.M.
ASOS…………………….20 S AT 8:15 P.M.
DAVIS……………………20 S AT 8:08 P.M.
RMY 20 MERLIN 20
FASTEST MILE FOR YESTERDAY………………….15 S AT 8:05 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….15 S AT 8:25 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………13 S AT 8:20 P.M.
AVERAGE WIND SPEED AND DIRECTION………….. 7.6 S
ASOS………………….. 8.1
DAVIS…………………. 7.6 SW [217 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……-0.29
ASOS…………..3.77
TOTAL PRECIPITATION FOR THE YEAR……….32.81 DEPARTURE……-2.24
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 75/54/65/-3/0.00/…/.. 20 S AERO 20 S RMY 20
09/01 The low since midnight is 59F, the daily normal low is 59F
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 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
RECORDS FOR SEPTEMBER 2
HIGH 99F IN 1953 (SEPTEMBER MAXIMUM RECORD)
LOW 44F IN 1909
PRECIP 2.73 INCHES IN 1947
PEAK GUST 55e MPH WNW IN 1944
TODAY’S REPORT PREPARED BY: Matt Douglas
