Thursday, August 13, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, AUGUST 13, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
DRY AND SEASONABLE TEMPERATURES TAKE HOLD
IN SOUTHERN NEW ENGLAND
Yesterday’s maximum temperature of 83F, reached around
2:30 PM EST, was just three degrees above the daily normal
maximum of 80F. Clear and normal temperatures in the lower 60s
allowed for comfortable viewing of this morning’s perseid meteor
showers. This morning’s minimum was 62F.
Excellent visibility has been reported this morning at
80 miles in all directions without any visible haze
or particulate matter. By the 1:00 PM EST observation cumulus
were scattered with scattered cirrus in the distance offshore.
A maximum temperature 80F was recorded with visibility of
80 miles still present.
Today’s Observations:
7 A.M.
Weather: Clear, few cumulus distant NW, few cirrus distant
ENE-SSE
Temperature: 67F; Dew Point: 59F; Wind: NW at 7 kts
Sea-level pressure: 29.99 ins. Hg, rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 67F
6-hr Min temp: 62F
24-hr precip: none
BHO SA 1155 CLR 80 157/67/59/3207/999/ FEW CU DSNT NW FEW CI
DSNT ENE-SSE/ 8/101 51015 10067 20062
10 A.M.
Weather: Clear, few small cumulus in all directions,
few cirrus distant ENE-SSE and NW
Temperature: 75F; Dew Point 58F; Wind: estimated WSW at 6 kts,
Wind Speed: Light
Sea-level pressure: 30.02 ins. Hg, rising, then steady
Visibility: 75 miles
BHO SA 1455 CLR 75 166/75/58/E2406/002/ FEW SML CU ALQDS FEW CI
DSNT ENE-SSE AND NW WND LGT/ 8/101 51009
1 P.M.
Weather: Scattered cumulus, scattered cirrus
Temperature: 80F; Dew Point: 57F; Wind: estimated NNW at 5 kts,
Wind Speed and Direction: Light and Variable
Sea-level pressure: 30.01 ins. Hg, steady, then falling
Visibility: 80 miles
6-hr Max temp: 80F
6-hr Min temp: 67F
BHO SA 1755 50 SCT 200 SCT 80 162/80/57/E3305/001/ WND LGT AND
VRB/ 8/101 58004 10080 20067
SUMMARY FOR WEDNESDAY, AUGUST 12, 2015
TEMPERATURE (DEGREES F)
MAX…..83 NORMAL…..80
MIN…..65 NORMAL…..62
MEAN….74 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL……………………+3
TOTAL DEPARTURE FOR THE MONTH……………………+6 [+0.3 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………9 DEPARTURE……….+2
TOTAL COOLING UNITS FOR THE MONTH…………..87 DEPARTURE……….+3
TOTAL COOLING UNITS FOR THE SEASON…………481 DEPARTURE………+46
TOTAL COOLING UNITS LAST SEASON TO DATE…….416 DIFFERENCE……..+65
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….22 W AT 3:38 P.M.
ASOS……………………23 W AT 3:38 P.M.
DAVIS…………………..19 W AT 5:13 P.M. RMY 20
FASTEST MILE FOR YESTERDAY…………………16 W AT 3:36 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………17 W AT 3:39 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..15 W AT 3:38 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.0 W
ASOS…………………..9.2
DAVIS………………….8.1 WNW [286 deg.]
* Last of several occurrences…
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 THE MONTH………..0.89 DEPARTURE…..-0.83
ASOS…………..0.91
TOTAL PRECIPITATION FOR THE YEAR………..28.25 DEPARTURE…..-4.46
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
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 88/68/78/+6/0.06/729/84 28 WNW RMY N/A
8/2 86/62/74/+2/0.00/865/100 24 SW RMY N/A
8/3 89/68/79/+7/0.00/690/80 31 S RMY N/A
8/4 86/66/76/+4/0.31/422/49 45 W RMY 50 TSTM
8/5 84/64/74/+2/0.00/765/89 28 WNW RMY 27
8/6 80/59/70/-2/0.00/685/80 22 W RMY 21
8/7 78/61/70/-2/0.00/845/99 20 ESE RMY 18
8/8 77/58/68/-4/0.00/741/87 18 E RMY N/A
8/9 72/59/66/-6/T/458/54 27 NNE RMY 26
8/10 84/58/71/0/0.00/…/.. 28 S RMY N/A
8/11 70/63/67/-4/0.52/000/00 32 SSE RMY 35
8/12 83/65/74/+3/0.00/…/.. 22 W RMY 20
8/13 low since midnight is 62F; normal low is now 62F
DAILY RECORDS FOR AUGUST 2015
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 13
HIGH 98F IN 1944, 2002
LOW 47F IN 1902, 1957
PRECIP 2.92 INCHES IN 1989
PEAK GUST 52 MPH SSE IN 1963
RECORDS FOR AUGUST 14
HIGH 99F IN 2002
LOW 46F IN 1964
PRECIP 3.06 INCHES IN 1919
PEAK GUST 61 MPH WNW IN 1963
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
