Tuesday, July 11, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JULY 11, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
MORE HUMID DAY WITH ON AND OFF RAIN SHOWERS
Rain began early this morning and has continued on and
off through the day. The daily total by 1:00PM EST was
0.25 inches with 0.20 inches falling before 7:00AM. Dew
points have measured in the upper 60s and low 70s for
most of the day, while temperatures rose to 79F.
Clouds and fog have been slow to clear. Distant fog was
still limiting visibility to just 10 miles in the north
through east south-east during the 1:00PM ob. Towering
cumulus were spotted from east to northwest at 1:00PM
Today’s Observations:
7 A.M.
Weather: Few stratus fractus E-NW, broken altocumulus, overcast
altostratus, patches of fog drifting below the summit
Temperature: 67F; Dew Point: 66F; Wind: S at 9 kts
Sea-level pressure: 29.96 ins. Hg, rising, then falling
Visibility: 10 miles, distant fog in all directions
6-hr Max temp: 69F
6-hr Min temp: 66F
24-hr precip: 0.20 inches
BHO SA 1155 E79 BKN 140 OVC 10 147/67/66/1709/996/ FEW STFRA E-NW
DSNT FG ALQDS PTCHS FG DRFTNG BLO SMT/ 8/73/ 58005 MANUAL 70020
ASOS 70020 10069 20066
10 A.M.
Weather: Broken stratus fractus, broken stratocumulus
Temperature: 73F; Dew Point: 70F; Wind: S at 6 kts,
Wind speed: Light
Sea-level pressure: 29.95 ins. Hg, rising then falling
Visibility: 10 miles, distant fog in all directions
3-hr precip: 0.05 inches
BHO SA 1455 E7 BKN 40 BKN 10 141/73/70/1706/995/ DSNT FG ALQDS WND LGT/
8/700 58006 MANUAL 6005/ ASOS 60006
1 P.M.
Weather: Towering cumulus E-NW, broken cumulus, broken cirrus
Temperature: 79F; Dew Point: 70F; Wind: WNW at 6 kts,
Wind: Light and variable
Sea-level pressure: 29.91 ins. Hg, falling, then more quickly
Visibility: 40 miles, except 10 miles N-ESE, distant fog in all directions
6-hr Max temp: 79F
6-hr Min temp: 66F
6-hr precip: 0.05 inches
BHO SA 1755 E60 BKN 250 BKN 40 128/79/70/2906/991/ TCU E-NW VSBY N-ESE 10
DSNT FG ALQDS WND L/V/ 8/201 58013 MANUAL 6005/ ASOS 60006 10079 20066
SUMMARY FOR MONDAY, JULY 10, 2017
TEMPERATURE (DEGREES F)
MAX…..85 NORMAL…..81
MIN…..63 NORMAL…..63
MEAN….74 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH……………………+19 [+1.7 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………9 DEPARTURE……….+2
TOTAL COOLING UNITS FOR THE MONTH…………..80 DEPARTURE………+16
TOTAL COOLING UNITS FOR THE SEASON…………281 DEPARTURE………+88
TOTAL COOLING UNITS LAST SEASON TO DATE…….213 DEPARTURE………+68
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….25 SW AT 2:11 P.M.
AERO……………………25 S AT 11:22 P.M.
ASOS……………………26 SW AT 2:11 P.M.
DAVIS…………………..27 SSW AT 2:10 P.M. RMY 26
FASTEST MILE FOR YESTERDAY…………………18 SSW AT 6:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………20 SW AT 2:11 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..19 SW AT 2:11 P.M.
AVERAGE WIND SPEED AND DIRECTION………….11.9 SW
ASOS………………….11.8
DAVIS…………………10.5 SW [227 DEG.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.20 DEPARTURE……+0.07
ASOS…………..0.20
TOTAL PRECIPITATION FOR THE MONTH……….0.98 DEPARTURE……-0.14
ASOS…………..0.96
TOTAL PRECIPITATION FOR THE YEAR……….32.15 DEPARTURE……+4.26
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR JULY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system 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
M: Missing data
7/1 85/67/76/+6/T/439/48 35 S AERO 37 S RMY 38
7/2 87/69/78/+8/T/785/86 25 W* AERO 28 W* RMY 27
7/3 85/67/76/+5/0.00/894/98 28 W* AERO 29 W RMY 30
7/4 84/62/73/+2/0.00/783/86 17 W AERO 17 W RMY 18
7/5 82/62/72/+1/0.00/855/94 20 S AERO 20 ENE RMY 20
7/6 82/60/71/+6/0.00/664/73 21 SSW AERO 22 SSW RMY 21
7/7 71/60/66/-5/0.63/000/00 28 ENE AERO 28 ENE RMY 27
7/8 84/61/73/+1/0.15/…/.. 30 SW* AERO 32 SSW RMY 33
7/9 81/60/71/-1/0.00/…/.. 26 W AERO 26 W RMY 26
7/10 85/63/74/+2/T/…/.. 25 SW AERO 25 S RMY 26
7/11 Low temp since midnight is 66F; normal low is now 63F
DAILY RECORDS FOR JULY
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 11
HIGH 98F IN 1911
LOW 49F IN 1890
PRECIP 1.87 INS IN 1959
WIND 53 MPH NW IN 1988
RECORDS FOR JULY 12
HIGH 97F IN 1943
LOW 48F IN 1945
PRECIP 1.43 INS IN 1975
WIND 48e MPH SSW IN 1944
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
