Saturday, September 3, 2016
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, SEPTEMBER 3, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
COOL AND PLEASANT WEATHER CONTINUES,
OUTFLOW CIRRUS CLOUDS FROM HERMINE BLANKET THE SKY
High pressure continued to sit over the region today, bringing
with it another day of extremely pleasant weather. Skies were mostly
cloudy due to cirrus from Hermine reaching the New England area.
After a record-breaking August, temperatures have been slightly cooler
than average. The overnight low of 56F was 3F below normal.
The max. of 71F by 1:00PM is 5F below normal.
PRELIMINARY STATS FOR AUGUST 2016
TEMPERATURE, Deg. F
Avg. Max. 85.1 [+5.9]
Avg. Min. 65.0 [+3.2]
Mean 75.1 [+4.6]
24-hour corrected mean: 74.1
Max. for month: 95F on 12th
Min. for month: 54F on 23rd
HEATING DEGREE DAYS
Total heating units: 0 [-16]
Total for the season: 10 [-15]
Total for last season: 1
COOLING DEGREE DAYS
Total cooling units: 318 [+132]
Total for the season: 792 [+255]
Total for last season: 666
PRECIPITATION, Inches
Total: 1.78 [-2.25]
Greatest in 24 hrs: 0.55 in. on 13th and 14th
WIND, mph
Avg. uncorrected wind speed: 10.3
Avg. corrected wind speed: 10.8
Prevailing wind direction: SSW at 14%
Peak gust and direction: 40 SSW on 14th
SUNSHINE:
Campbell-Stokes card minutes: 17460 mins. of possible 24780 or 70%
Astronomical total minutes: 18130 mins. of possible 25714 or 71%
The 24-hour corrected mean temperature for August of 74.1 deg F breaks
the previous record of 72.6 deg F set in 2012 for the warmest August.
August 2016 was 1.5 deg F warmer than the second warmest August on record
while previous records were all within 0.1-0.2 deg F of each other. The
average maximum and minimum temperatures for August 2016 are also new records.
The previous high average max was 83.2 deg F set in August 2005; the previous
high average min was 64.9 deg F set in August 2001.
Summer 2016 was also the warmest summer on record with an average temperature
of 71.6 deg F. This breaks the previous record of 71.3 deg F set in 2012.
Even with the extreme drought in the Boston area, summer 2016 only ranks as
third driest.
BHO Warmest Augusts, deg F (1885-2016):
1) 74.1 in 2016
2) 72.6 in 2012
3) 72.5 in 1988
4) 72.4 in 2015
5) 72.3 in 2005
6) 72.1 in 2002
BHO Warmest Summers (Jun-Aug), deg F (1885-2016):
1) 71.6 in 2016
2) 71.3 in 2010
3) 70.8 in 1949
4) 70.6 in 1999
5) 70.4 in 1952
6) 70.2 in 2005
BHO Driest Summers (Jun-Aug), inches (1885-2016):
1) 3.48 in 1949
2) 3.54 in 1957
3) 4.90 in 2016
4) 5.24 in 1965
5) 5.43 in 1964
6) 5.45 in 1997
10 A.M.
Weather: Broken altostratus, broken cirrostratus
Temperature: 69F; Dew Point: 57F; Wind: ENE at 9 kts
Sea-level pressure: 30.24 ins. Hg, rising, then steady
Visibility: 70 miles
BHO SA 1455 E160 BKN 220 BKN 70 239/69/57/0709/024/ FEW CU ENE-SW/
8/117 50003
1 P.M.
Weather: Few cumulus in all directions, scattered cirrostratus,
broken cirrus
Temperature: 71F; Dew Point: 54F; Wind: ENE at 6 kts,
Wind Speed: Light
Sea-level pressure: 30.01 ins. Hg, falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 71F
6-hr Min temp: 59F
BHO SA 1755 220 SCT E260 BKN 70 162/71/54/0606/001/ FEW CU ALQDS WND LGT/
8/101 55002 10071 20059
SUMMARY FOR FRIDAY, SEPTEMBER 2, 2016
TEMPERATURE (DEGREES F)
MAX…..76 NORMAL…..76
MIN…..58 NORMAL…..59
MEAN….67 NORMAL…..68
DEPARTURE FROM 30-YEAR NORMAL……………………-1
TOTAL DEPARTURE FOR THE MONTH……………………-1 [-0.7 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………2 DEPARTURE……….-2
TOTAL COOLING UNITS FOR THE MONTH……………5 DEPARTURE……….-3
TOTAL COOLING UNITS FOR THE SEASON…………797 DEPARTURE……..+252
TOTAL COOLING UNITS LAST SEASON TO DATE…….686 DIFFERENCE…….+111
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….21 NNW AT 10:04 P.M.
AEROVANE………………..16 NNW AT 10:05 P.M.
ASOS……………………21 NNW AT 10:05 P.M.
DAVIS…………………..1P NNW AT 10:05 P.M. RMY 20
FASTEST MILE FOR YESTERDAY…………………13 NW AT 11:02 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………15 NNW AT 11:01 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..12 WSW AT 2:45 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..6.8 WSW
ASOS…………………..7.3
DAVIS………………….6.3 WSW [250 Deg.]
* Last of several occurrences
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……….0.09 DEPARTURE……-0.13
ASOS…………..0.10
TOTAL PRECIPITATION FOR THE YEAR……….25.06 DEPARTURE…..-10.18
ASOS………….25.37
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
8/1 75/65/70/-2/0.02/320/37 21 NE AERO 20 ENE RMY 20
8/2 71/63/67/-5/0.12/000/00 16 ENE AERO 16 ENE RMY 16
8/3 81/60/71/-1/0.00/603/70 18 S AERO 16 S RMY 17
8/4 86/61/74/+2/0.00/833/97 23 S AERO 22 S RMY 17
8/5 87/61/74/+2/0.00/823/96 29 S AERO 29 S RMY 30
8/6 88/67/78/+6/T/419/49 24 SSW AERO 23 SSW RMY 23
8/7 89/65/77/+5/0.00/784/92 26 WNW AERO 25 WNW RMY 26
8/8 87/63/75/+3/0.00/816/96 23 W AERO 21 W RMY 22
8/9 90/65/78/+6/0.00/789/93 25 SSW AERO 24 SSW RMY 25
8/10 76/66/71/+0/0.28/017/02 30 SSW AERO 31 SSW RMY 33
8/11 93/73/83/+12/T/666/79 22 SSW AERO 21 SSW RMY 22
8/12 95/74/85/+14/0.00/487/58 30 SW AER0 30 SW RMY 31
8/13 78/67/73/+1/0.16/201/24 25 NNW AERO 36 NNW RMY N/A TSTM
8/14 94/69/82/+11/0.39/701/84 39 SSW AERO 40 SSW RMY N/A TSTM
8/15 89/68/79/+8/0.00/758/91 25 W AERO 24 W RMY 28
8/16 83/69/76/+5/0.02/125/15 31 S AERO 30 S RMY N/A
8/17 84/68/76/+5/0.00/679/82 38 W* AERO 35 W RMY 39
8/18 89/65/77/+6/T/635/77 22 SW AERO 20 SW RMY 21
8/19 86/68/77/+7/0.00/674/82 17 S AERO 16 SSE RMY 17
8/20 86/65/76/+6/0.00/754/92 25 S AERO 23 S RMY 25
8/21 87/62/75/+5/0.54/727/89 25 S AERO 22 SSE RMY N/A
8/22 78/59/69/-1/0.00/774/95 31 NW AERO 29 NW RMY 32
8/23 80/54/67/-3/0.00/796/98 23 WSW AERO 21 WSW RMY 23
8/24 87/62/75/+5/0.00/809/100 22 W AERO 18 W RMY 20
8/25 86/65/76/+7/0.00/629/78 28 SW AERO 23 SW RMY 27
8/26 88/70/79/+9/0.25/458/57 23 W AER0 17 W RMY 21
8/27 86/66/76/+7/0.00/761/95 14 SE AERO 12 SE RMY 15
8/28 86/66/76/+7/0.00/718/90 25 SSE AERO 20 SSE RMY 27
8/29 89/65/77/+8/0.00/589/74 28 WNW AERO 23 W RMY 29
8/30 83/59/71/+3/0.00/785/99 18 S* AERO 14 SW RMY N/A
8/31 80/65/73/+5/T/000/00 21 SW AERO 16 SW RMY 20
DAILY RECORDS FOR AUGUST 2016
8/11/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 73F,
TIES PREVIOUS RECORD SET IN 1900 AND 1988
8/12/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 74F,
TIES PREVIOUS RECORD SET IN 1988
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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
9/1 72/64/68/0/0.09/…/.. 21 NNW AERO 16 NNW RMY 20
9/2 76/58/67/-1/0.00/…/.. 23 ENE AERO 17 NE RMY 23
9/3 Low temp since midnight is 56F; normal low is now 59F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR SEPTEMBER 3
HIGH 95F IN 1929
LOW 43F IN 1983
PRECIP 3.82 INCHES IN 1972 (TROPICAL STORM CARRIE)
PEAK GUST 58 MPH NNE IN 1972 (TROPICAL STORM CARRIE)
RECORDS FOR SEPTEMBER 4
HIGH 90F IN 1953, 1973
LOW 46F IN 1987
PRECIP 3.22 INCHES IN 1922
PEAK GUST 47 MPH SE IN 1966
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
