Sunday, August 9, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 9, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
STORM AT SEA BRINGS ONSHORE WIND, CLOUDS, AND DRIZZLE
The outer fringes of an ocean storm have been affecting the region today.
While the bulk of this storm’s rainfall remained well offshore, it has
created an onshore flow that has brought clouds and some drizzle to areas
near the coast. Here at Blue Hill, a trace of rainfall was recorded this
morning, and temperatures were held in the low-mid 60s for several hours.
By afternoon, however, the clouds began to slowly break up, and a little bit of
sunshine has been observed. Temperatures have remained on the cool side, with
a high of only 72F through 2PM EDT. This will likely be the fourth straight
day of below normal temperatures, after a warm start to the month. Our yearly
precipitation deficit is now close to 4.50 inches.
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus (2 layers), few altocumulus castellanus distant
NW-NNE, Sun occasionally dimly visible
Temperature: 62F; Dew Point: 59F; Wind: NNE at 9 kts
Sea-level pressure: 30.02 ins. Hg, steady then rising
Visibility: 60 miles, except 35 miles E-ESE
6-hr Max temp: 62F
6-hr Min temp: 59F
24-hr precip: 0.00 ins.
BHO SA 1155 E40 BKN 55 BKN 60 166/62/59/0309/002/ FEW ACC DSNT NW-NNE
SUN OCNLY DMLY VSBL VSBY E-ESE 35/ 8/580 53007 10062 20059
10 A.M.
Weather: Light drizzle, overcast stratocumulus, thin fog SW
Temperature: 65F; Dew Point 60F; Wind: NNE at 10G19 kts
Sea-level pressure: 30.05 ins. Hg, rising then steady
Visibility: 35 miles, except 20 miles S-SSW, 5 miles SW
3-hr precip: Trace
BHO SA 1455 E10 OVC 35L- 177/65/60/0310G19/005/ PCPN VRY LGT THN FG SW
VSBY S-SSW 20 SW 5/ 8/5// 51011 MANUAL 6000/
1 P.M.
Weather: Broken stratocumulus (2 layers)
Temperature: 70F; Dew Point: 59F; Wind: NNE at 13G20 kts
Sea-level pressure: 30.05 ins. Hg, about steady
Visibility: 45 miles
6-hr Max temp: 72F
6-hr Min temp: 62F
6-hr precip: Trace
BHO SA 1755 E20 BKN 35 BKN 45 177/70/59/0313G20/005/ 8/500 53000
MANUAL 6000/ 10072 20062
SUMMARY FOR SATURDAY, AUGUST 8, 2015
TEMPERATURE (DEGREES F)
MAX…..77 NORMAL…..80
MIN…..58 NORMAL…..63
MEAN….68 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL……………………-4
TOTAL DEPARTURE FOR THE MONTH…………………..+13 [+1.4 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………3 DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE MONTH…………..69 DEPARTURE………+12
TOTAL COOLING UNITS FOR THE SEASON…………463 DEPARTURE………+55
TOTAL COOLING UNITS LAST SEASON TO DATE…….384 DIFFERENCE……..+79
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….18 E AT 11:29 A.M. *
ASOS……………………18 E AT 11:27 A.M.
DAVIS…………………..15 E AT 10:31 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………13 E AT 11:28 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………14 ENE AT 11:30 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..12 E AT 11:29 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..8.0 E
ASOS…………………..8.6
DAVIS………………….7.4 ENE [061 deg.]
* Last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.00 DEPARTURE…..-0.14
ASOS……………0.00
TOTAL PRECIPITATION FOR THE MONTH………..0.37 DEPARTURE…..-0.81
ASOS……………0.38
TOTAL PRECIPITATION FOR THE YEAR………..27.73 DEPARTURE…..-4.44
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/…/.. 28 WNW RMY N/A
8/2 86/62/74/+2/0.00/…/.. 24 SW RMY N/A
8/3 89/68/79/+7/0.00/…/.. 31 S RMY N/A
8/4 86/66/76/+4/0.31/…/.. 45 W RMY 50 TSTM
8/5 84/64/74/+2/0.00/…/.. 28 WNW RMY 27
8/6 80/59/70/-2/0.00/…/.. 22 W RMY 21
8/7 78/61/70/-2/0.00/…/.. 20 ESE RMY 18
8/8 77/58/68/-4/0.00/…/.. 18 E RMY N/A
8/9 low since midnight is 59F; normal low is now 63F
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 9
HIGH 100F IN 1949
LOW 49F IN 1899
PRE 2.65 INS IN 1976
PEAK GUST 90 MPH SW IN 1968
RECORDS FOR AUGUST 10
HIGH 101F IN 1949 [STATION RECORD MAXIMUM – Tied with 8/2/1975]
LOW 49F IN 1964
PRE 2.27 INS IN 1952
PEAK GUST 88e MPH S IN 1976
TODAY’S REPORT PREPARED BY: Jonathan O’Brien
