Wednesday, August 31, 2016
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, AUGUST 31, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
APPROACHING COLD FRONT LEAVES US WITH OVERCAST SKIES AND A TRACE OF
PRECIPITATION BEFORE THE 1:00PM EST OBSERVATION
Overcast skies were observed at each observation today. Visibility improved to
70 miles, but distant features were still hard to distinguish through the thick
haze. Dew points rose to the mid 60s as pressure continued to drop and the early
week’s high pressure system moved farther offshore. A very light rain fell before
the 1:00PM observation giving us only a trace of precipitation and it made no dent
in our 10 in. deficit for the year.
7 A.M.
Weather: Few cumulus in all directions, scattered altocumulus,
overcast cirrostratus
Temperature: 69F; Dew Point: 66F; Wind: SW at 9 kts
Sea-level pressure: 29.98 ins. Hg, falling, then less quickly
Visibility: 20 miles, distant fog in all directions
6-hr Max temp: 69F
6-hr Min temp: 65F
24-hr precip: 0.00 in.
BHO SA 1155 160 SCT E220 BKN 20 154/69/66/2309/998/ FEW CU ALQDS
DSNT FG ALQDS/ 8/166 56003 10069 20065
10 A.M.
Weather: Few cumulus ENE-SW, few altocumulus in all directions,
overcast altostratus
Temperature: 78F; Dew Point: 65F; Wind: SW at 10G15 kts
Sea-level pressure: 29.98 ins. Hg, steady, then falling
Visibility: 60 miles, hazy
BHO SA 1455 E180 OVC 60 151/78/65/2310G15/998/ FEW CU ENE-SW FEW
AC ALQDS HAZY/ 8/12/ 56003
1 P.M.
Weather: Light rain, few cumulus in all directions, scattered altocumulus,
overcast altostratus
Temperature: 79F; Dew Point: 63F; Wind: WSW at 8 kts
Sea-level pressure: 29.93 ins. Hg, falling, then less quickly
Visibility: 70 miles, hazy
6-hr Max temp: 79F
6-hr Min temp: 68F
BHO SA 1755 120 SCT E140 OVC 70R- 135/79/63/2508/993/ FEW CU ALQDS
HAZY/ 8/12/ 57016 MANUAL 600// 10079 20068
SUMMARY FOR TUESDAY, AUGUST 30, 2016
TEMPERATURE (DEGREES F)
MAX…..83 NORMAL…..77
MIN…..59 NORMAL…..60
MEAN….71 NORMAL…..68
DEPARTURE FROM 30-YEAR NORMAL……………………+3
TOTAL DEPARTURE FOR THE MONTH………………….+140 [+4.5 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………6 DEPARTURE……….+2
TOTAL COOLING UNITS FOR THE MONTH………….310 DEPARTURE……..+128
TOTAL COOLING UNITS FOR THE SEASON…………784 DEPARTURE……..+251
TOTAL COOLING UNITS LAST SEASON TO DATE…….653 DIFFERENCE…….+131
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….18 S AT 8:46 P.M.*
AEROVANE………………..14 SW AT 3:08 P.M.
ASOS……………………18 WSW AT 4:00 P.M.
DAVIS…………………..18 SSW AT 3:07 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………12 WSW AT 3:59 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………14 W AT 4:01 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..13 WSW AT 4:01 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..7.5 S
ASOS…………………..8.1
DAVIS………………….6.8 WSW [240 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……….1.78 DEPARTURE……-2.14
ASOS…………..1.76
TOTAL PRECIPITATION FOR THE YEAR……….24.97 DEPARTURE……-9.94
ASOS………….25.27
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 AERO 30 SW RMY 31
8/13 78/67/73/+2/0.16/201/24 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 87/63/75/+5/0.54/727/89 25 S AERO 22 SSE RMY N/A
8/22 78/59/69/-1/0.00/…/.. 31 NW AERO 29 NW RMY 32
8/23 80/54/67/-3/0.00/…/.. 23 WSW AERO 21 WSW RMY 23
8/24 87/62/75/+5/0.00/…/.. 22 W AERO 18 W RMY 20
8/25 86/65/76/+7/0.00/…/.. 28 SW AERO 23 SW RMY 27
8/26 88/70/79/+9/0.25/…/.. 23 W AER0 17 W RMY 21
8/27 86/66/76/+7/0.00/…/.. 14 SE AERO 12 SE RMY 15
8/28 86/66/76/+7/0.00/…/.. 25 SSE AERO 20 SSE RMY 27
8/29 89/64/77/+8/0.00/…/.. 28 WNW AERO 23 W RMY 29
8/30 83/59/71/+3/0.00/…/.. 18 S* AERO 14 SW RMY N/A
8/31 Low temp since midnight is 65F; normal low is now 60F
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
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
PRECIP 2.32 INCHES IN 2013
PEAK GUST 59e MPH S IN 1945, SSW IN 1965
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Lizzy Suzedell
