Saturday, August 15, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, AUGUST 15, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
OVERCAST AND COOL WITH TRACE AMOUNTS OF
RAINFALL….
Today was overcast, with some very light drizzle
falling between 5-10 A.M. Visibility was limited
to only 10 mph thanks to a distant fog. Wind is
more significant than previous days, reaching over
30 mph this morning. The breeze off the ocean is
coming in at around 18 mph, keeping temperatures
much cooler than seasonal averages.
The high so far today is 66F, 14 degrees below the
daily normal maximum of 80F. The low since midnight
is 63F, a degree above the normal minimum of 62F.
The summit of Blue Hill is reaching a drought, with
the monthly rain total being 1.74 inches below
normal. Supporting evidence is the annual rain
deficit of -3.66 inches.
Today’s Observations:
7 A.M.
Weather: Overcast stratus, very light drizzle
Temperature: 65F; Dew Point: 61F; Relative Humidity: 87%
Wind: NNE at 13G25 kts, peak of 33 NE at 6:52 A.M.
Sea-level pressure: 30.05 ins. Hg: Falling then rising
Visibility: 5 miles, fog
6-hr Max temp: 66F
6-hr Min temp: 63F
24-hr Precip: Trace
BHO SA 1155 10 OVC 5F 177/65/61/0413G25/005/ L-CTD PCPN
VRY LGT PK WND 0429/52/ 8/6// 51018 10066 20063
10 A.M.
Weather: Overcast stratus
Temperature: 66F; Dew Point: 62F; Relative Humidity: 90%
Wind: NNE at 12G24 kts
Sea-level pressure: 30.09 ins. Hg: Rising steadily
Visibility: 5 miles, fog
3-hr Precip: Trace
BHO SA 1455 20 OVC 5F 192/66/62/0312G24/009/ 8/6// 600//
51015
1 P.M.
Weather: Overcast stratus
Temperature: 65F; Dew Point: 61F; Relative Humidity: 86%
Wind: NNE at 13G23 kts
Sea-level pressure: 30.10 ins. Hg: rising, then steady
Visibility: 10 miles, thin fog
6-hr Max temp: 66F
6-hr Min temp: 64F
6-hr Precip: Trace
BHO SA 1755 20 OVC 10 194/65/61/0313G23/010/ THN FG ALQDS/
8/6// 600// 51002 10066 20064
SUMMARY FOR FRIDAY, AUGUST 14, 2020
TEMPERATURE (DEGREES F)
MAX…..82 NORMAL…..80
MIN…..67 NORMAL…..62
MEAN….75 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL……………..+4
TOTAL DEPARTURE FOR THE MONTH……………..+92 [+6.4 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………..10 DEPARTURE…….+4
TOTAL COOLING UNITS FOR THE MONTH…………….185 DEPARTURE……+88
TOTAL COOLING UNITS FOR THE SEASON……………672 DEPARTURE…..+224
TOTAL COOLING UNITS LAST SEASON TO DATE……….510 DEPARTURE…..+162
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..23 ENE AT 6:19 P.M.
AERO…………………….22 NE AT 8:27 A.M.
ASOS…………………….23 ENE AT 6:20 P.M.
DAVIS……………………23 E AT 6:20 P.M
RMY N/A MERLIN N/A
FASTEST MILE FOR YESTERDAY………………….15 NE AT 8:40 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….16 E AT 6:16 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………17 ENE AT 8:36 A.M.
AVERAGE WIND SPEED AND DIRECTION…………….10.0 NE
ASOS…………………….10.3
DAVIS……………………10.6 NE [53 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.13
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.23 DEPARTURE……-1.74
ASOS…………..0.23
TOTAL PRECIPITATION FOR THE YEAR……….29.30 DEPARTURE……-3.66
ASOS………….30.04
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
07/01 76/63/70/0/0.01/228/25 16 E AERO 14 E RMY 14 TSTM
07/02 86/61/74/+4/0.00/803/88 30 WSW AERO 25 WSW RMY 33
07/03 73/60/67/-4/0.00/091/10 30 NE AERO 28 NE RMY 30
07/04 79/60/70/-1/0.00/565/62 16 S AERO 16 S RMY 16
07/05 83/63/73/+2/0.54/373/41 24 NW AERO 30 NW RMY 26 TSTM
07/06 73/60/67/-4/0.00/482/53 20 ENE AERO 16 NNE RMY 18
07/07 78/60/69/-2/0.00/454/50 25 S AERO 25 S RMY 26
07/08 83/64/74/+2/0.00/227/25 32 SSW AERO 32 SSW RMY 32
07/09 89/70/80/+8/0.00/834/92 24 S AERO 23 S RMY 22
07/10 83/70/77/+5/0.05/109/12 30 SSE AERO 32 SSE RMY N/A
07/11 85/70/78/+6/0.00/614/68 39 S AERO 39 S RMY 38
07/12 86/70/78/+6/0.00/830/92 28 WSW AERO 28 WSW RMY 29
07/13 82/69/76/+4/0.23/306/34 30 SSE AERO 31 SSE RMY 30 TSTM
07/14 78/63/71/-1/0.00/369/41 26 ENE AERO 25 ENE RMY 26
07/15 72/59/66/-6/0.00/539/60 21 NE AERO 21 NE RMY N/A
07/16 73/57/65/-7/0.00/815/91 21 E AERO 21 E RMY 19
07/17 71/57/64/-8/0.19/027/03 24 SSW AERO 24 SSW RMY 25
07/18 89/66/78/+6/0.00/822/92 18 W AERO 17 W RMY 19
07/19 92/69/81/+9/0.00/722/81 28 S AERO 28 S RMY 26
07/20 91/72/82/+10/T/481/54 25 SSW AERO 25 SSW RMY N/A
07/21 88/68/78/+6/0.00/799/90 25 W AERO 25 W RMY 24
07/22 80/67/74/+2/0.17/275/31 16 ENE AERO M M RMY 16
07/23 88/68/78/+6/0.48/203/23 31 N AERO 32 N RMY 31 TSTM
07/24 81/68/75/+3/0.00/476/54 15 ENE AERO 15 ENE RMY 16
07/25 88/67/78/+6/0.00/845/96 18 W AERO 18 WNW RMY N/A
07/26 89/70/80/+8/0.00/632/72 27 W AERO 28 W RMY 27
07/27 94/72/83/+11/0.00/823/94 23 SW AERO 25 SW RMY N/A
07/28 95/74/85/+13/0.01/621/71 28 WSW AERO 25 WSW RMY 25
07/29 90/68/79/+7/0.00/698/80 23 SSW AERO 25 SSW RMY 24
07/30 88/71/80/+8/0.00/252/29 29 W AERO 28 W RMY 29
07/31 84/69/77/+5/0.00/564/65 14 ENE AERO 14 ENE RMY 15
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/…/.. 36 WSW AERO 38 SW RMY 36
08/04 83/71/77/5/0.21/…/.. 67 SSE AERO 71 S RMY 70
08/05 90/68/79/+7/0.00/…/.. 28 SW AERO 30 SW RMY 29
08/06 84/65/75/3/0.00/…/.. 20 W AERO 17 W RMY 19
08/07 79/65/72/0/T/…/.. 16 NE AERO 16 NE RMY N/A
08/08 83/64/74/+2/0.00/…/.. 20 S AERO 20 S RMY 19
08/09 90/65/78/+6/0.00/…/.. 26 SSW AERO 26 SSW RMY 26
08/10 94/69/82/+11/0.00/…/.. 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 The low since midnight is 63F, 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 15
HIGH 95F IN 1928
LOW 47F IN 1964
PRECIP 1.89 INCHES IN 2011
PEAK GUST 44e MPH S IN 1941
RECORDS FOR AUGUST 16
HIGH 95F IN 1944
LOW 50F IN 1927
PRECIP 1.47 INCHES IN 1926
PEAK GUST 45e MPH N IN 1951
TODAY’S REPORT PREPARED BY: Benjamin Turner
