Tuesday, August 19, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, AUGUST 19, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
ANOTHER COOL MORNING, 54F MINIMUM AT GREAT BLUE HILL,
43F RECORDED AT NORWOOD MEMORIAL AIRPORT
More cool air brought down from Canada arrived yesterday
and overnight, with yesterday’s predominant wind direction
of NW. Today’s daily record minimum of 48F, set in 1958, was
never in threat this morning with an overnight low of 54F
recorded just after 5:00 AM EST. A minimum of 43F, recorded
very nearby at Norwood Memorial Airport would have surely
done the trick however, with very cool air settling into
the valleys.
Clear skies and good visibility have prevailed once again
this morning, with small cumulus creeping in from the
distance, and visibilities of 70 miles in all direction.
Today’s Observations:
7 A.M.
Weather: Clear, few cirrus fibratus in all directions
Temperature: 60F; Dew Point: 50F; Wind: NNW at 7 kts
Sea-level pressure: 29.93 ins. Hg, rising, then more slowly
Visibility: 70 miles, light distant haze
6-hr max temp: 60F
6-hr min temp: 54F
24-hr precip: None
BHO SA 1155 CLR 70 134/60/50/3307/993/
FEW CI ALQDS LGT DSNT HZ ALQDS/ 8/001 51010 10060 20054
10 A.M.
Weather: Clear, few cumulus distant WNW-NE and ESE,
few dense cirrus WSW-W, few cirrus fibratus distant
in all directions
Temperature: 70F; Dew Point: 53F; Wind: estaimted W at 5 kts
Wind Speed: Light
Sea-level pressure: 29.95 ins. Hg, rising, then more slowly
Visibility: 70 miles, light distant haze
BHO SA 1455 CLR 70 141/70/53/E2805/993/
FEW CU DSNT WNW-NE AND ESE FEW DNS CI WSW-W FEW CI DSNT ALQDS
LGT DSNT HZ ALQDS WND LGT/ 8/101 51007
1 P.M.
Weather: Scattered cirrus fibratus, few small cumulus
in all directions
Temperature: 76F; Dew Point: 52F; Wind: estimated WNW at 6 kts
Wind Speed: Light
Sea-level pressure: 29.93 ins. Hg, falling then falling more slowly
Visibility: 70 miles, light distant haze
6-hr max. temp: 76F
6-hr min. temp: 60F
BHO SA 1755 250 SCT 70 135/76/52/3006/993/
FEW SML CU ALQDS LGT DSNT HZ ALQDS WND LGT/ 8/101 56006 10076 20060
WEATHER SUMMARY FOR MONDAY, AUGUST 18, 2014
TEMPERATURE (DEGREES F)
MAX…..77 NORMAL…..79
MIN…..56 NORMAL…..62
MEAN….67 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL…………………….-4
TOTAL DEPARTURE FOR THE MONTH……………………-32 [-2.0 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..4 DEPARTURE………..-2
TOTAL COOLING UNITS FOR THE MONTH………….86 DEPARTURE……….-35
TOTAL COOLING UNITS FOR THE SEASON………..423 DEPARTURE……….-49
TOTAL COOLING UNITS LAST SEASON TO DATE……557 DIFFERENCE……..-134
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………23 WNW AT 9:23 A.M.*
ASOS…………………..26 NW AT 9:24 A.M.
DAVIS………………….24 WNW AT 9:17 A.M. RMY 25
FASTEST MILE FOR YESTERDAY………………..16 NW AT 8:53 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..18 NW AT 8:56 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….16 NW AT 8:56 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.8 NW
ASOS…………………..9.8
DAVIS………………….8.5 NW [311 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 AUGUST………….1.38 DEPARTURE……….-1.11
ASOS…………..1.35
TOTAL PRECIPITATION FOR THE YEAR……….31.01 DEPARTURE……….-2.47
ASOS………….31.26
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 78/60/69/-2/…./…/.. 21 WNW RMY 23
8/18 77/56/67/-4/0.00/…/.. 23 WNW RMY 25
8/19 morning low of 54F; 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 19
HIGH 90F IN 1906, 1966, 2002
LOW 48F IN 1958
PRECIP 7.02 INCHES IN 1955 [DIANE – RECORD FOR MONTH]
PEAK GUST 78 MPH ENE IN 1991 [ HURRICANE BOB ]
RECORDS FOR AUGUST 20
HIGH 93F IN 1937
LOW 48F IN 1896, 1905, 1949
PRECIP 2.71 INCHES IN 1970
PEAK GUST 47 MPH W IN 1983
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
