Tuesday, August 8, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, AUGUST 8, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
GRADUAL CLEARING AS LOW PRESSURE PASSES
AND HIGH PRESSURE MOVES IN
Yesterday’s anticipated heavy rain was not able to pass into
southern New England due to convection over the mid-Atlantic.
Instead, we received light rain showers and light drizzle which
totaled 0.03 in. at 7:00AM EST. Light drizzle continued for a
brief period of time between 7:00AM and 10:00AM leaving a trace.
Foggy and overcast conditions began to clear before the morning
observation. Skies eventually became broken with multiple cloud
layers. Visibility had improved to 50 miles by early afternoon.
Temperatures remained low with a max. of 71F by 1:00PM. Humid
conditions remained in place in spite of the clearing as dew points
measured in the low 60s all day.
Today’s Observations:
7 A.M.
Weather: Fog, patches of fog drifting below the summit, broken stratus
fractus, overcast stratus
Temperature: 62F; Dew Point: 60F; Wind: estimated NNE at 2 kts,
Wind: Light and variable
Sea-level pressure: 29.90 ins. Hg, steady
Visibility: 4 miles, except 15 miles ESE-SSW
6-hr Max temp: 62F
6-hr Min temp: 60F
24-hr precip: 0.03 in.
BHO SA 1155 E8 BKN 16 OVC 4F 126/62/60/E0202/990/ VSBY ESE-SSW 15
PTCHS FG DRFTG BLO SMT WND L/V/ 8/7// 54000 MANUAL 70003 ASOS 70003
10062 20060
10 A.M.
Weather: Broken stratus fractus, overcast stratus
Temperature: 64F; Dew Point: 62F; Wind: estimated N at 2 kts,
Wind: Light and variable
Sea-level pressure: 29.92 ins. Hg, rising, then more quickly
Visibility: 40 miles, distant fog in all directions
3-hr precip: Trace
BHO SA 1455 E9 BKN 15 OVC 40 133/64/62/E3602/992/ DSNT FG ALQDS
WND L/V/ 8/7// 53007 MANUAL 600//
1 P.M.
Weather: Scattered cumulus, broken stratocumulus, broken altocumulus,
broken cirrus
Temperature: 71F; Dew Point: 61F; Wind: NNW at 5 kts,
Wind speed: Light
Sea-level pressure: 29.95 ins. Hg, rising, then more quickly
Visibility: 50 miles
6-hr Max temp: 71F
6-hr Min temp: 61F
6-hr precip: Trace
BHO SA 1755 18 SCT E38 BKN 130 BKN 200 BKN 50 141/71/61/3405/995/
WND LGT/ 8/532 53008 MANUAL 600// 10071 20061
SUMMARY FOR MONDAY, AUGUST 7, 2017
TEMPERATURE (DEGREES F)
MAX…..76 NORMAL…..81
MIN…..60 NORMAL…..63
MEAN….68 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL…………………….-4
TOTAL DEPARTURE FOR THE MONTH…………………….+1 [-0.1 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………3 DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE MONTH…………..50 DEPARTURE………..0
TOTAL COOLING UNITS FOR THE SEASON…………471 DEPARTURE………+70
TOTAL COOLING UNITS LAST SEASON TO DATE…….530 DEPARTURE………-59
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….28 SSW AT 5:50 P.M.
AERO……………………28 SSW AT 5:50 P.M.
ASOS……………………28 SSW AT 5:59 P.M.
DAVIS…………………..29 SSW AT 5:59 P.M. RMY 29
FASTEST MILE FOR YESTERDAY…………………21 SSW AT 6:07 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………22 SSW AT 6:07 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..21 SSW AT 5:55 P.M.
AVERAGE WIND SPEED AND DIRECTION………….10.0 SSW
ASOS………………….10.2
DAVIS………………….8.5 SW [221 DEG.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.03 DEPARTURE……-0.11
ASOS…………..0.03
TOTAL PRECIPITATION FOR THE MONTH……….1.22 DEPARTURE……+0.18
ASOS…………..1.22
TOTAL PRECIPITATION FOR THE YEAR……….35.98 DEPARTURE……+3.95
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
8/1 87/65/76/+4/0.00/…/.. 16 ESE*AERO 16 NNW RMY 16
8/2 86/65/76/+4/1.09/…/.. 32 W AERO 36 W RMY 34 TSTM
8/3 83/65/74/+2/0.00/…/.. 22 S AERO 23 S RMY 24
8/4 84/66/75/+3/0.00/…/.. 26 S AERO 30 S RMY 29
8/5 75/63/69/-3/0.10/…/.. 23 NW AERO 28 NW RMY 29
8/6 76/57/67/-5/0.00/…/.. 30 NW AERO 32 NW RMY 31
8/7 76/60/68/-4/…./…/.. 28 SSW AERO 28 SSW RMY 29
8/8 Low temp since midnight is 60F; normal low is now 63F
DAILY RECORDS FOR AUGUST
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 8
HIGH 93F IN 1909,1949
LOW 47F IN 1903
PRECIP 3.08 INCHES IN 1976
PEAK GUST 45 MPH WNW IN 1958
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
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
