Friday, June 15, 2018
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JUNE 15, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME
MORNING PRECIPITATION, COOLER TEMPERATURES, AND CALMER WINDS
0.01 ins. of rain fell this morning at Great Blue Hill. Light rain was observed falling at the 7:00 A.M. EST observation, but it stopped shortly after that and there has not been much more precipitation since then. Visibility this morning was low at 15 miles due to fog and falling rain, but visibility increased to 70 miles for the rest of the late morning and afternoon. Relative humidity lowered as the day went on with dew points remaining in the lower 50s as temperatures increased.
A maximum temperature of 64F was measured so far today, which is 11F below the normal maximum temperature of 75F for June 15th. The minimum recorded this morning of 53F is 5F below the normal low temperature of 57F. While today’s temperatures have been cool, yesterday ended up having slightly warmer than average temperatures. The average temperature of 69F was 3F above the normal temperature for June 14th. These warmer temperatures did not make much of a dent in the total temperature departure for the month. We are now 25F below normal for the month of June, or 2.0F degrees per day below normal.
Winds have been much calmer today. The peak gust yesterday was measured in the late morning at 35 MPH out of the west. The peak gust so far for today was 17 MPH out of the northeast very early this morning, and since then winds have been lighter. Around midnight last night, the wind shifted from the west-northwest to the northeast.
Today’s Observations:
7 A.M.
Weather: Light rain, overcast stratus
Temperature: 53F; Dew Point: 51F; Wind: ENE at 6 kts,
Wind speed: Light
Sea-level pressure: 29.92 ins. Hg, rising, then less quickly
Visibility: 15 miles, fog
6-hr Max temp: 55F
6-hr Min temp: 53F
24-hr Precip: 0.01 ins.
BHO SA 1155 E009 OVC R-F15 133/53/51/0606/992/ WND LGT/ 8/6//
51024 MANUAL 70001 10055 20053
10 A.M.
Weather: Overcast stratus
Temperature: 58F; Dew Point: 51F; Wind: E at 4 kts,
Wind speed: Light
Sea-level pressure: 29.93 ins. Hg, falling, then rising
Visibility: 70 miles, distant fog in all directions
3-hr Precip: Trace
BHO SA 1455 E010 OVC 70 136/58/51/1004/993/ DSNT FG ALQDS
WND LGT/ 8/6// 53003 MANUAL 6000/
1 P.M.
Weather: Scattered stratocumulus, broken stratus
Temperature: 63F; Dew Point: 52F; Wind: NE at 3 kts,
Wind speed: Light
Sea-level pressure: 29.93 ins. Hg, rising, then falling
Visibility: 70 miles, distant fog in all directions
6-hr Max temp: 64F
6-hr Min temp: 53F
6-hr precip: Trace
BHO SA 1755 008 SCT E025 BKN 70 136/63/52/0403/993/ DSNT FG ALQDS
WND LGT/ 8/600 58000 MANUAL 6000/ 10064 20053
SUMMARY FOR THURSDAY, JUNE 14, 2018
TEMPERATURE (DEGREES F)
MAX…..77 NORMAL…..74
MIN…..61 NORMAL…..57
MEAN….69 NORMAL…..66
DEPARTURE FROM 30-YEAR NORMAL…………………….+3
TOTAL DEPARTURE FOR THE MONTH……………………-25 [-2.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..0 DEPARTURE………..-3
TOTAL HEATING UNITS FOR THE MONTH………….58 DEPARTURE………..+7
TOTAL HEATING UNITS FOR THE SEASON……….5905 DEPARTURE………-449
TOTAL HEATING UNITS LAST SEASON TO DATE…..5721 DIFFERENCE……..+184
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………4 DEPARTURE……….+1
TOTAL COOLING UNITS FOR THE MONTH…………..16 DEPARTURE………-17
TOTAL COOLING UNITS FOR THE SEASON………….78 DEPARTURE………+21
TOTAL COOLING UNITS LAST SEASON TO DATE…….111 DEPARTURE………-33
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..35 W AT 11:08 A.M.
AERO…………………….36 WNW AT 9:38 A.M.
ASOS…………………….35 W AT 9:40 A.M.
DAVIS……………………37 M AT 9:26 A.M.** RMY 37
FASTEST MILE FOR YESTERDAY………………….28 WNW AT 9:38 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….26 W AT 9:40 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………27 M AT 9:39 A.M.**
AVERAGE WIND SPEED AND DIRECTION…………..14.9 W
ASOS…………………..14.4
DAVIS………………….13.8
**Davis direction malfunctioning
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01 DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.02 DEPARTURE……-1.26
ASOS…………..1.04
TOTAL PRECIPITATION FOR THE YEAR……….28.34 DEPARTURE……+3.58
ASOS………….29.91
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/…/.. 21 S AERO 21 S RMY N/A
6/02 79/54/67/+5/T/…/.. 26 ENE AERO 25 ENE RMY 27
6/03 59/45/52/-10/0.00/…/.. 28 ENE AERO 25 ENE RMY N/A
6/04 52/45/49/-14/…/…/.. 29 ENE AERO 26 ENE RMY 29
6/05 64/47/56/-7/…./…/.. 24 N AERO 21 N RMY 23 TSTM
6/06 66/50/58/-5/0.00/…/.. 23 S AERO 21 S RMY 22
6/07 69/50/60/-4/0.00/…/.. 25 S AERO 25 S RMY 27
6/08 79/52/66/+2/0.00/…/.. 20 SW AERO 17 SW RMY 18
6/09 79/58/69/+5/0.00/…/.. 22 W AERO 21 W RMY 22
6/10 72/56/64/-1/0.00/…/.. 20 S AERO 18 S RMY 17
6/11 68/51/60/-5/0.00/…/.. 21 ENE AERO 20 SSW RMY N/A
6/12 77/49/63/-2/0.00/…/.. 37 SW AERO 37 SW RMY 39
6/13 74/56/65/0/T/…/.. 35 SW AERO 36 SW RMY 36
6/14 77/61/69/+3/…./…/.. 35 W AERO 36 WNW RMY 37
6/15 Low temp since midnight is 53F; normal low is now 57F
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 15
HIGH 94F IN 1988
LOW 42F IN 1959, 1978
PRECIP 2.04 INS IN 1903
PEAK GUST 52 MPH SW IN 1972
RECORDS FOR JUNE 16
HIGH 92F IN 1891, 1967
LOW 44F IN 1926
PRECIP 2.17 INS IN 1931
PEAK GUST 55 MPH W IN 1958
TODAY’S REPORT PREPARED BY: Lizzy Suzedell
