Friday, August 14, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, AUGUST 14, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
HIGH PRESSURE CRESTS OVER THE REGION,
BLUE SKIES AND DRY CONDITIONS CONTINUE
Sea level pressure at this morning’s 7:00 AM EST observation
rose to 30.16 inches, as the center of high pressure has
slowly made its way across New England. This reading is the
highest pressure reading so far for the month of August,
and has allowed for mostly clear and dry conditions since
earlier this week. Precipitation for the month of August
is at nearly 1 inch below normal so far, along with an annual
departure of 4.58 inches below normal through yesterday.
Clear conditions have been visible all morning into this
afternoon. By the 1:00 PM EST observation only a few small
cumulus in all directions with some cirrus barely visible
offshore. Light distant haze had reduced visibility down
to 65 miles, with a maximum temperature of 85F recorded
so far.
Today’s Observations:
7 A.M.
Weather: Clear, few cirrus distant E-S
Temperature: 70F; Dew Point: 56F; Wind: WSW at 7 kts
Sea-level pressure: 30.16 ins. Hg, rising, then more slowly
Visibility: 70 miles, light distant haze
6-hr Max temp: 70F
6-hr Min temp: 63F
24-hr precip: none
BHO SA 1155 CLR 70 212/70/56/2507/016/ FEW CI DSNT E-S LGT DSNT
HZ ALQDS/ 8/001 51011 10070 20063
10 A.M.
Weather: Clear, few small cumulus distant SE-SW and WNW-NNE,
few cirrus distant E-S
Temperature: 81F; Dew Point 56F; Wind: SSW at 9G15 kts,
Sea-level pressure: 30.16 ins. Hg, rising, then falling but higher still
Visibility: 70 miles, light distant haze
BHO SA 1455 CLR 70 214/81/56/2009G15/016/ FEW SML CU DSNT SE-SW
AND WNW-NNE FEW CI DSNT E-S LGT DSNT HZ ALQDS/ 8/101 50002
1 P.M.
Weather: Clear, few small cumulus in all directions,
few cirrus distant E-SSW
Temperature: 83F; Dew Point: 54F; Wind: SW at 9 kts,
Sea-level pressure: 30.14 ins. Hg, falling, then more quickly
Visibility: 65 miles, light distant haze
6-hr Max temp: 85F
6-hr Min temp: 70F
BHO SA 1755 CLR 65 205/83/54/2209/014/ FEW SML CU ALQDS FEW CI
DSNT E-SSW LGT DSNT HZ ALQDS/ 8/1001 58009 10085 20070
SUMMARY FOR THURSDAY, AUGUST 13, 2015
TEMPERATURE (DEGREES F)
MAX…..83 NORMAL…..80
MIN…..62 NORMAL…..62
MEAN….73 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL……………………+2
TOTAL DEPARTURE FOR THE MONTH……………………+8 [+0.4 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………8 DEPARTURE……….+2
TOTAL COOLING UNITS FOR THE MONTH…………..95 DEPARTURE……….+4
TOTAL COOLING UNITS FOR THE SEASON…………489 DEPARTURE………+47
TOTAL COOLING UNITS LAST SEASON TO DATE…….416 DIFFERENCE……..+73
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….18 WNW AT 10:53 A.M.
ASOS……………………19 W AT 10:54 P.M.
DAVIS…………………..17 WNW AT 10:53 P.M. RMY 18
FASTEST MILE FOR YESTERDAY…………………12 WNW AT 5:59 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………14 W AT 10:55 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..12 NW AT 12:13 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..7.6 NNW
ASOS…………………..8.1
DAVIS………………….6.8 NW [314 deg.]
* Last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.00 DEPARTURE…..-0.12
ASOS……………0.00
TOTAL PRECIPITATION FOR THE MONTH………..0.89 DEPARTURE…..-0.95
ASOS…………..0.91
TOTAL PRECIPITATION FOR THE YEAR………..28.25 DEPARTURE…..-4.58
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 83/62/73/+2/0.00/…/.. 18 WNW RMY 18
8/14 low since midnight is 63F; 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 14
HIGH 99F IN 2002
LOW 46F IN 1964
PRECIP 3.06 INCHES IN 1919
PEAK GUST 61 MPH WNW IN 1963
RECORDS FOR AUGUST 15
HIGH 95F IN 1928
LOW 47F IN 1964
PRECIP 1.89 INCHES IN 2011
PEAK GUST 44e MPH S IN 1941
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
