Sunday, August 17, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 17, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
MOSTLY CLOUDY TODAY WITH A FEW SHOWERS EARLY THIS MORNING
A FEW MORE SHOWERS POPPING UP THIS AFTERNOON
A few light rain showers before sunrise today brought just 0.01 inches of
rain to the summit. These showers had pushed away by our 7:00 AM observation,
but mid-level clouds lingered, and we have had mostly cloudy skies for much
of the day. In addition, with a cold front nearby and temperatures rising
into the upper 70s by early afternoon, a few more showers have popped up,
with most of them being to our south. Just a light trace of rain has been
recorded here so far this afternoon. The wind has been steady today at about
10-15mph, mostly from the W-SW. Visibility has been in the range of 40 to 50
miles throughout the day with distant haze.
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, broken altocumulus, few altocumulus
castellanus NE-E, thin smoke layer along horizon W-NW
Temperature: 65F; Dew Point: 61F; Wind: SSW at 9 kts
Sea-level pressure: 29.86 ins. Hg, falling slightly
Visibility: 50 miles, distant haze
6-hr max temp: 65F
6-hr min temp: 62F
24-hr precip: 0.01 inches
BHO SA 1155 E55 BKN 120 BKN 50 113/65/61/2009/986/ FEW ACC NE-E
THN K LYR ALG HRZN W-NW DSNT HZ/ 8/580 56001 MANUAL 70001 10065 20062
10 A.M.
Weather: Broken altocumulus (2 levels), few distant cumulus, few altocumulus
lenticularis NW
Temperature: 74F; Dew Point: 59F; Wind: W at 10 kts
Sea-level pressure: 29.84 ins. Hg, falling then falling more slowly
Visibility: 40 miles, distant haze
3-hr precip: 0.00 inches
BHO SA 1455 E70 BKN 95 BKN 40 104/74/59/2610/984/ FEW DSNT CU FEW ACSL NW
DSNT HZ/ 8/140 56009
1 P.M.
Weather: Scattered cumulus, broken altocumulus, few moderate cumulus
Temperature: 75F; Dew Point: 61F; Wind: W at 11 kts
Sea-level pressure: 29.80 ins. Hg, falling then falling more slowly
Visibility: 40 miles, distant haze
6-hr max. temp: 78F
6-hr min. temp: 65F
6-hr precip: Trace
BHO SA 1755 40 SCT E80 BKN 40 092/75/61/2811/980/ FEW MDT CU DSNT HZ/
8/260 56012 MANUAL 6000/ 10078 20065
WEATHER SUMMARY FOR SATURDAY, AUGUST 16, 2014
TEMPERATURE (DEGREES F)
MAX…..76 NORMAL…..79
MIN…..56 NORMAL…..62
MEAN….66 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL…………………….-5
TOTAL DEPARTURE FOR THE MONTH……………………-26 [-1.8 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..1 DEPARTURE………..-5
TOTAL COOLING UNITS FOR THE MONTH………….80 DEPARTURE……….-29
TOTAL COOLING UNITS FOR THE SEASON………..417 DEPARTURE……….-43
TOTAL COOLING UNITS LAST SEASON TO DATE……548 DIFFERENCE……..-131
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………24 SW AT 12:32 P.M.
ASOS…………………..27 SW AT 1:47 P.M.
DAVIS………………….26 W AT 11:37 A.M. RMY 27
FASTEST MILE FOR YESTERDAY………………..19 SW AT 11:32 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..21 SSW AT 1:48 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….19 SW AT 11:33 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..11.8 WSW
ASOS…………………..11.3
DAVIS………………….10.6 SW [231 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01 DEPARTURE……….-0.12
ASOS…………..0.00
TOTAL PRECIPITATION FOR AUGUST………….1.38 DEPARTURE……….-0.85
ASOS…………..1.35
TOTAL PRECIPITATION FOR THE YEAR……….31.01 DEPARTURE……….-2.21
ASOS……………N/A
PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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 86/63/75/+3/0.00/598/69 25 S RMY 29
8/2 68/59/64/-8/0.11/009/01 21 ESE RMY 22
8/3 71/60/66/-6/0.01/104/12 12 SE RMY 12
8/4 83/64/74/+2/0.00/550/64 20 S RMY 21
8/5 87/66/77/+5/0.00/798/93 17 S RMY 19
8/6 79/64/72/0/0.07/462/54 23 WNW RMY 25
8/7 79/58/69/-3/T/589/69 22 NW RMY 24 TSTM
8/8 82/55/69/-3/0.00/817/96 20 WNW RMY 20
8/9 82/60/71/-1/0.00/730/86 16 WNW RMY 17
8/10 84/63/74/+3/0.00/770/91 15 W RMY N/A
8/11 85/63/74/+3/0.00/667/79 25 S RMY 29
8/12 81/64/73/+2/0.00/387/46 25 SSE RMY N/A
8/13 69/61/65/-6/1.09/000/00 35 ESE RMY 37
8/14 73/57/65/-6/0.00/828/99 27 W RMY 29
8/15 74/56/65/-6/0.09/…/.. 23 W RMY 23 TSTM
8/16 76/56/66/-5/…./…/.. 24 SW RMY 27
8/17 morning low of 62F; the normal low is now 62F
DAILY RECORDS FOR AUGUST 2014:
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 17
HIGH 97F IN 1944
LOW 48F IN 1902
PRECIP 2.17 INCHES IN 1998
PEAK GUST 50e MPH SSW IN 1952, 50 MPH WNW IN 1962
RECORDS FOR AUGUST 18
HIGH 93F IN 2002
LOW 47F IN 1824
PRECIP 5.75 INCHES IN 1955 [DIANE]
PEAK GUST 46 MPH WNW IN 2007
TODAY’S REPORT PREPARED BY: Jonathan O’Brien
