Monday, June 12, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JUNE 12, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
RECORD BREAKING HEAT AND HAZY CONDITIONS
Today’s maximum temperature by the 1:00 P.M. observation EST was 93F,
which breaks the previous record of 92F set in 1973. Today’s minimum
of 69F currently ties the previous high minimum record set in 1942.
If the temperature does not go over 93F or below 69F for the rest of
the day, the average temperature of 81F will be 16F above normal.
The air has been dry, with relative humidity at 33% at 1:00 P.M.
Winds today have been fairly calm out of the west. Pressure has
slowly been dropping. It has been sunny, with few cirrus and few
to scattered cumulus in the area. Despite the dry air and few clouds,
visibility has been very poor at 25-30 miles with haze lingering all day.
Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus W-NW, few cirrus in all directions
Temperature: 77F; Dew Point: 63F; Wind: W at 7 kts
Sea-level pressure: 29.99 ins. Hg, rising unsteadily
Visibility: 25 miles, hazy
6-hr Max temp: 72F
6-hr Min temp: 69F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 25 159/77/63/2807/999/ FEW AC W-NW FEW CI ALQDS
HAZY/ 8/031 52014 10072 20069
10 A.M.
Weather: Few cumulus NW-NE, few cirrus in all directions
Temperature: 81F; Dew Point: 70F; Wind: WSW at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.97 ins. Hg, falling, then more quickly
Visibility: 30 miles, hazy
BHO SA 1455 CLR 30 148/81/70/2506/997/ FEW CU NW-NE FEW CI ALQDS
HAZY WND LGT/ 8/101 58011
1 P.M.
Weather: Scattered cumulus, few cirrus in all directions
Temperature: 93F; Dew Point: 59F; Wind: WSW at 11G16 kts
Sea-level pressure: 29.92 ins. Hg, falling, then more quickly
Visibility: 30 miles, hazy
6-hr Max temp: 93F
6-hr Min temp: 77F
BHO SA 1755 50 SCT 30 132/93/59/2511G16/992/ FEW CI ALQDS HAZY/
8/101 58016 10093 20077
SUMMARY FOR SUNDAY, JUNE 11, 2017
TEMPERATURE (DEGREES F)
MAX…..89 NORMAL…..74
MIN…..64 NORMAL…..56
MEAN….77 NORMAL…..65
DEPARTURE FROM 30-YEAR NORMAL……………………+12
TOTAL DEPARTURE FOR THE MONTH……………………-20 [-3.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………0 DEPARTURE……….-3
TOTAL HEATING UNITS FOR THE MONTH…………..59 DEPARTURE………+19
TOTAL HEATING UNITS FOR THE SEASON………..5721 DEPARTURE……..-622
TOTAL HEATING UNITS LAST SEASON TO DATE……5270 DIFFERENCE…….+451
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..12 DEPARTURE……….+9
TOTAL COOLING UNITS FOR THE MONTH…………..21 DEPARTURE……….-3
TOTAL COOLING UNITS FOR THE SEASON………….77 DEPARTURE………+20
TOTAL COOLING UNITS LAST SEASON TO DATE……..67 DEPARTURE……….-2
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….29 SW AT 5:36 P.M.
AERO……………………32 WSW AT 5:27 P.M.
ASOS……………………32 SW AT 4:26 P.M.
DAVIS…………………..30 M AT 3:23 P.M. RMY 30
FASTEST MILE FOR YESTERDAY…………………24 SW AT 3:13 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………23 SW AT 4:26 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..22 M AT 3:46 P.M.
AVERAGE WIND SPEED AND DIRECTION………….14.8 SW
ASOS………………….14.6
DAVIS…………………13.2 (M)
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.12 DEPARTURE……+1.31
ASOS…………..3.20
TOTAL PRECIPITATION FOR THE YEAR……….28.46 DEPARTURE……+3.99
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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
6/1 78/55/67/+5/0.06/…/.. 39 NW AERO 39 NW RMY 41
6/2 70/50/60/-2/T/…/.. 32 WNW AERO 35 WNW RMY 34
6/3 66/47/57/-5/0.01/…/.. 23 NW AERO 25 NW RMY 24
6/4 71/49/60/-3/0.28/…/.. 21 SSE*AERO 21 SW RMY N/A
6/5 55/49/52/-11/1.20/000/00 32 NE AERO 35 NE RMY N/A
6/6 49/45/47/-16/…./000/00 40 ENE AERO 43 ENE RMY 43
6/7 65/47/56/-8/…./…/.. 21 NNE AERO 18 NE* RMY 20
6/8 76/52/64/0/0.00/…/.. 21 SSE AERO 21 SSE RMY 18
6/9 78/53/66/+2/…./…/.. 48 N AERO 54 N RMY 52 TSTM
6/10 83/59/71/+6/0.00/…/.. 25 SSW AERO 28 SSW RMY 27
6/11 89/64/77/+12/0.00/…/.. 29 SW AERO 32 WSW RMY 30
6/12 Low temp since midnight is 69F; normal low is now 56F
DAILY RECORDS FOR JUNE
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JUNE 11
HIGH 92F IN 1973, 1984
LOW 40F IN 1972
PRECIP 2.66 INCHES IN 1922
PEAK GUST 43e MPH S IN 1945
RECORDS FOR JUNE 13
HIGH 93F IN 1988
LOW 43F IN 1982
PRECIP 6.07 INS 1998 [Record for month]
PEAK GUST 69 MPH N IN 1956
TODAY’S REPORT PREPARED BY: Lizzy Suzedell
