Saturday, August 26, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, AUGUST 26, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
BEAUTIFUL LATE SUMMER DAY…
Much drier air has moved into New England today, and the
low temperature dropped to 55F this morning, the lowest of
the month so far. With dew points dropping to the low 40s, the
temperature fell to a low of 43F at nearby Norwood Airport
this morning. The sky was completely free of clouds early
today, though a haze layer aloft has filtered the sun somewhat
all day. A few cumulus clouds that began to form by late
morning are still just scattered at mid-afternoon. The
visibility has been very good today near 70 miles, and the
wind has remained generally light.
Today’s Observations:
7 A.M.
Weather: Clear, SKC (sky completely free of clouds),
haze aloft all quadrants
Temperature: 59F; Dew Point: 48F; Wind: NW at 8 kts
Sea-level pressure: 30.26 ins. Hg, rising, then more slowly
Visibility: 75 miles
6-hr Max temp: 59F
6-hr Min temp: 55F
24-hr Precip: Trace
BHO SA 1155 CLR 75 247/59/47/3208/026/ SKC HZ ALF ALQDS/ 51012
10059 20055
10 A.M.
Weather: Clear, few cumulus all quadrants, haze aloft
all quadrants
Temperature: 69F; Dew Point: 46F; Wind: NW at 8 kts,
Sea-level pressure: 30.27 ins. Hg, rising then steady
Visibility: 70 miles
BHO SA 1455 CLR 70 251/69/46/3108/027/ FEW CU/CUFRA ALQDS HZ
ALF ALQDS/ 8/100 51004
1 P.M.
Weather: Scattered cumulus and cumulus fractus
Temperature: 73F; Dew Point: 42F; Wind: NW at 5 kts
Wind: Light and variable
Sea-level pressure: 30.25 ins. Hg, falling
Visibility: 70 miles
6-hr Max temp: 73F
6-hr Min temp: 59F
BHO SA 1755 55 SCT 70 245/73/42/3205/025/ HZ ALF ALQDS WND LGT
AND VRB/ 8/100 56006 10073 20059
SUMMARY FOR FRIDAY, AUGUST 25, 2017
TEMPERATURE (DEGREES F)
MAX…..75 NORMAL…..78
MIN…..57 NORMAL…..61
MEAN….66 NORMAL…..69
DEPARTURE FROM 30-YEAR NORMAL…………………….-3
TOTAL DEPARTURE FOR THE MONTH……………………+33 [+1.1 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………1 DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE MONTH………….184 DEPARTURE………+25
TOTAL COOLING UNITS FOR THE SEASON…………605 DEPARTURE………+95
TOTAL COOLING UNITS LAST SEASON TO DATE…….730 DEPARTURE……..-125
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….21 NW AT 12:23 P.M.
AERO……………………21 NW AT 12:23 P.M.
ASOS……………………23 NW AT 12:23 P.M.
DAVIS…………………..20 NW AT 12:22 P.M. RMY 23
FASTEST MILE FOR YESTERDAY…………………14 NW AT 12:23 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………16 NW AT 12:24 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..15 WNW AT 12:23 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.8 NW
ASOS…………………..9.0
DAVIS………………….7.7 NNW [329 DEG.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….Trace DEPARTURE……-0.11
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….1.44 DEPARTURE……-1.92
ASOS…………..1.43
TOTAL PRECIPITATION FOR THE YEAR……….36.20 DEPARTURE……+1.85
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
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
8/1 87/65/76/+4/0.00/762/88 16 ESE*AERO 16 NNW RMY 16
8/2 86/65/76/+4/1.09/372/43 32 W AERO 36 W RMY 34 TSTM
8/3 83/65/74/+2/0.00/552/64 22 S AERO 23 S RMY 24
8/4 84/66/75/+3/0.00/697/81 26 S AERO 30 S RMY 29
8/5 75/63/69/-3/0.10/060/07 23 NW AERO 28 NW RMY 29
8/6 76/57/67/-5/0.00/795/93 30 NW AERO 32 NW RMY 31
8/7 76/60/68/-4/0.01/597/70 28 SSW AERO 28 SSW RMY 29
8/8 74/60/67/-5/0.02/000/00 17 S AERO 16 SSE RMY 16
8/9 83/58/71/-1/0.00/831/98 18 S AERO 18 S RMY 19
8/10 86/63/75/+4/T/643/76 20 S AERO 18 S RMY 20
8/11 82/63/73/+2/0.00/666/79 17 S AERO 16 S RMY 17
8/12 75/57/66/-5/0.17/294/35 22 SSW*AERO 22 SSW RMY 23
8/13 84/67/76/+5/0.00/796/95 26 WNW AERO 24 WNW RMY 26
8/14 82/67/75/+4/0.00/359/43 14 SSW*AERO 14 S RMY 15
8/15 79/64/72/+1/T/058/07 21 S AERO 21 S RMY 23
8/16 83/64/74/+3/0.00/698/84 23 NW* AERO 23 NW RMY 25
8/17 81/58/70/-1/0.00/…/.. 15 SSW AERO 14 SSW RMY N/A
8/18 79/63/71/0/0.01/…/.. 33 S AERO 35 S RMY 35
8/19 89/65/77/+7/0.00/…/.. 23 WSW AERO 23 WSW RMY 25
8/20 84/66/75/+5/0.00/…/.. 23 NW AERO 25 NW RMY 27
8/21 85/63/74/+5/0.00/…/.. 18 SW AERO 20 SW RMY 20
8/22 88/68/78/+8/0.00/…/.. 31 S AERO 35 S RMY 34
8/23 83/64/74/+4/0.04/…/.. 24 WNW*AERO 25 WNW RMY 27
8/24 80/59/70/0/0.00/…/.. 18 WNW*AERO 17 WNW RMY 21
8/25 75/57/66/-3/T/…/.. 21 NW AERO 21 NW RMY 23
8/26 Low temp since midnight is 57F; normal low is now 61F
DAILY RECORDS FOR AUGUST
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 26
HIGH 96F IN 1900, 1948
LOW 46F IN 1885
PRECIP 5.85 INCHES IN 1924
PEAK GUST 55e MPH NNW IN 1947
RECORDS FOR AUGUST 27
HIGH 99F IN 1948
LOW 44F IN 1885
PRECIP 2.77 INCHES IN 1946
PEAK GUST 48 MPH NW IN 1983
TODAY’S REPORT PREPARED BY: Mike Iacono
