Sunday, June 24, 2018
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JUNE 24, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME
MORNING BEGINS WITH LIGHT RAIN, OVERCAST SKIES
AND FOG BUT BEGINS TO CLEAR AS PRESSURE SLOWLY ROSE…
Rain showers began yesterday afternoon and we measured
0.03 ins., mostly falling yesterday afternoon, at the
7:00 A.M. observation. The rain was very light this
morning and ended around 7:45 A.M., for an additional
trace of precipitation measured so far today. High
temperatures so far today have been normal with a max of
78F so far by 1:00 P.M., the daily normal is also 78F.
Overcast skies cleared a bit by 10:00 A.M. and broken
stratus and stratocumulus were observed later in the day.
Visibility was limited to 3 miles this morning due to fog
in the area. A distant haze remained after the fog
dissipated which obscured visibility down to 40 miles at
each other observation. The wind shifted overnight to
coming from the S/SW and remained light for most of the
day. Humidity stayed pretty high today with dew points
ranging from 59-64F. This made for sticky feeling air in
the afternoon.
Today’s Observations:
7 A.M.
Weather: Very light rain and fog, overcast nimbostratus
Temperature: 60F; Dew Point: 59F; Wind: SW at 7 kts
Sea-level pressure: 29.83 ins. Hg, rising, then more quickly
Visibility: 3 miles
6-hr Max temp: 60F
6-hr Min temp: 56F
24-hr Precip: 0.03 ins.
BHO SA 1155 E6 OVC 3L-F 103/60/59/2207/983/ L-B15 PCPN
VRY LGT/ 8/02/ 53007 MANUAL 70003 ASOS 70003 10060 20056
10 A.M.
Weather: Broken stratus
Temperature: 68F; Dew Point: 61F; Wind: SW at 6 kts,
Wind: Light
Sea-level pressure: 29.85 ins. Hg, rising unsteadily
Visibility: 40 miles, distant haze in all directions
3-hr Precip: Trace
BHO SA 1455 E12 BKN 40 109/68/61/2306/985/ DSNT
HZ ALQDS WND LGT/ 8/600 51006 MANUAL 6000/
1 P.M.
Weather: Broken stratocumulus, broken cirrus
Temperature: 77F; Dew Point: 64F; Wind: SSW at 2 kts,
Wind: Light and variable, direction estimated
Sea-level pressure: 29.82 ins. Hg, falling, then more slowly
Visibility: 40 miles, distant haze in all directions
6-hr Max temp: 78F
6-hr Min temp: 59F
6-hr precip: Trace
BHO SA 1755 E25 BKN E250 BKN 40 097/77/64/E2002/982/ DSNT
HZ ALQDS WND L/V/ 8/401 58012 MANUAL 600// 10078 20059
SUMMARY FOR SATURDAY, JUNE 23, 2018
TEMPERATURE (DEGREES F)
MAX…..65 NORMAL…..77
MIN…..55 NORMAL…..59
MEAN….60 NORMAL…..68
DEPARTURE FROM 30-YEAR NORMAL…………………….-8
TOTAL DEPARTURE FOR THE MONTH…………………….-9 [-0.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..5 DEPARTURE………..+4
TOTAL HEATING UNITS FOR THE MONTH………….67 DEPARTURE…………0
TOTAL HEATING UNITS FOR THE SEASON……….5914 DEPARTURE………-456
TOTAL HEATING UNITS LAST SEASON TO DATE…..5724 DIFFERENCE……..+190
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE MONTH…………..61 DEPARTURE……….-7
TOTAL COOLING UNITS FOR THE SEASON…………123 DEPARTURE………+31
TOTAL COOLING UNITS LAST SEASON TO DATE…….167 DEPARTURE………-44
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..22 ENE AT 12:36 P.M.
AERO…………………….21 NE AT 2:20 P.M.
ASOS…………………….22 ENE AT 8:30 A.M.
DAVIS……………………20 M AT 4:43 P.M.** RMY 22
FASTEST MILE FOR YESTERDAY………………….14 E AT 7:37 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….15 ENE AT 4:46 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………14 M AT 7:38 A.M.**
AVERAGE WIND SPEED AND DIRECTION……………8.8 ENE
ASOS……………………9.1
DAVIS…………………..8.4
**Davis direction malfunctioning
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.03 DEPARTURE……-0.08
ASOS…………..0.03
TOTAL PRECIPITATION FOR THE MONTH……….1.16 DEPARTURE……-2.34
ASOS…………..1.18
TOTAL PRECIPITATION FOR THE YEAR……….28.48 DEPARTURE……+2.50
ASOS………….30.05
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
6/01 78/62/70/+8/T/009/01 21 S AERO 21 S RMY N/A
6/02 79/54/67/+5/T/353/39 26 ENE AERO 25 ENE RMY 27
6/03 59/45/52/-10/0.00/816/90 28 ENE AERO 25 ENE RMY N/A
6/04 52/45/49/-14/0.82/000/00 29 ENE AERO 26 ENE RMY 29
6/05 64/47/56/-7/0.19/173/19 24 N AERO 21 N RMY 23 TSTM
6/06 66/50/58/-5/0.00/373/41 23 S AERO 21 S RMY 22
6/07 69/50/60/-4/0.00/282/31 25 S AERO 25 S RMY 27
6/08 79/52/66/+2/0.00/684/75 20 SW AERO 17 SW RMY 18
6/09 79/58/69/+5/0.00/767/84 22 W AERO 21 W RMY 22
6/10 72/56/64/-1/0.00/593/65 20 S AERO 18 S RMY 17
6/11 68/51/60/-5/0.00/594/65 21 ENE AERO 20 SSW RMY N/A
6/12 77/49/63/-2/0.00/814/89 37 SW AERO 37 SW RMY 39
6/13 74/56/65/0/T/284/31 35 SW AERO 36 SW RMY 36
6/14 77/61/69/+3/0.00/495/54 35 W AERO 36 WNW RMY 37
6/15 68/53/61/-5/0.01/266/29 17 NNW AERO 16 WNW RMY 19
6/16 83/54/69/+3/0.00/…/.. 25 NNW AERO 24 NNW RMY 25
6/17 86/63/75/+8/0.00/…/.. 23 S AERO 22 S RMY N/A
6/18 86/64/75/+8/0.10/…/.. 37 SSW AERO 37 SSW RMY 40 TSTM
6/19 81/64/73/+6/0.01/…/.. 31 WSW AERO 32 WSW RMY 32
6/20 81/58/70/+2/0.00/…/.. 22 W AERO 21 W RMY 23
6/21 81/62/72/+4/0.00/…/.. 22 E AERO 18 E RMY 21
6/22 75/56/66/-2/0.00/…/.. 24 ESE AERO 22 ESE RMY 24
6/23 65/55/60/-8/…./…/.. 22 ENE AERO 21 NE RMY 22
6/24 Low temp since midnight is 56F; normal low is now 60F
DAILY RECORDS FOR JUNE 2018
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JUNE 24
HIGH 91F IN 1914,1976,2013
LOW 40F IN 1932
PRECIP 2.80 INS IN 1929
PEAK GUST 54 MPH WNW IN 2010
RECORDS FOR JUNE 25
HIGH 93F IN 1943,1980, 2005
LOW 47F IN 1903
PRECIP 1.38 INS IN 2012
PEAK GUST 51 MPH W IN 1960
TODAY’S REPORT PREPARED BY: Kaitlin Geagan
