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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JUNE 25, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
MORNING TEMPERATURE INVERSION–60F MINIMUM HERE, 46F AT NORWOOD AIRPORT
YET ANOTHER SUNNY, DRY DAY WITH 50-60 MILES VISIBILITY
TEMPERATURES RISE TO 80F BY EARLY AFTERNOON–DEW POINT NEAR 50F
Clear sky and near calm winds overnight with unusually dry air
for late June led to a night of strong radiational cooling.
While the minimum temperature did not drop below 60F here at
the summit a low of 46F was recorded in the low-lying area
of Norwood Airport, just to our southwest.
Under a very sunny sky the temperature had re-bounded to near
80F by early this afternoon with visibility 50-60 miles.
This area is now very close to being placed in an area of moderate
drought by the U.S. Drought Monitor. June rainfall has been
very much on the light side with only a half inch of rainfall
since June 5th.
Today’s Observations:
7 A.M.
Weather: Clear, few cirrus distant WNW
Temperature: 68F; Dew Point: 52F; Wind: SE at 2 kts (estimated)
Wind: Light and variable
Sea-level pressure: 30.22 in. Hg, rising, then more slowly
Visibility: 50 miles, except NE-SE 20 miles, W-NW 60 miles,
hazy NE-SE, light distant haze W-NW
6-hr Max temp: 68F
6-hr Min temp: 60F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 50 234/68/52/E1302/022/ FEW CI DSNT WNW VSBY NE-SE 20 HZY
VSBY W-WNW 60 LGT DSNT HZ WND L/V/ 8/001 51015 10068 20060
10 A.M.
Weather: Clear, few moderate cumulus distant NW, few cirrus WSW-NNW
Temperature: 75F; Dew Point: 48F; Wind: E at 2 kts (estimated)
Wind: Light variable
Sea-level pressure: 30.23 in. Hg, rising slightly
Visibility: 50 miles, except 60 miles W-NW, 40 miles NE-SE distant haze
BHO SA 1455 CLR 50 237/75/48/E1002/023/ FEW MDT CU DSNT NW FEW CI WSW-NNW
VSBY NE-SE 40 W=NW 60 DSNT HZ WND L/V/ 8/201 53003
1 P.M.
Weather: Clear, small cumulus distant SW-NW, lone patch cirrus vicinity
of station NE
Temperature: 80F; Dew Point: 50F; Wind: ENE at 8 kts
Wind: Direction variability NNE-E
Sea-level pressure: 30.22 in. Hg, falling then rising slightly
Visibility: 60 miles, except 65 miles NW, ight distant haze
6-hr Max temp: 80F
6-hr Min temp: 68F
BHO SA 1755 CLR 55 233/80/50/0708/022/ SML CU DSNT SW-NW LONE PTCH CI
VC NE VSBY NW 65 LGT DSNT HZ WND 03V10/ 8/101 55004 10080 20068
SUMMARY FOR FRIDAY, JUNE 24, 2016
TEMPERATURE (DEGREES F)
MAX…..77 NORMAL…..78
MIN…..58 NORMAL…..60
MEAN….68 NORMAL…..69
DEPARTURE FROM 30-YEAR NORMAL…………………….-1
TOTAL DEPARTURE FOR THE MONTH……………………+20 [+0.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………0 DEPARTURE……….-1
TOTAL HEATING UNITS FOR THE MONTH…………..34 DEPARTURE………-35
TOTAL HEATING UNITS FOR THE SEASON………..5282 DEPARTURE…….-1089
TOTAL HEATING UNITS LAST SEASON TO DATE……6491 DIFFERENCE……-1209
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………3 DEPARTURE……….-2
TOTAL COOLING UNITS FOR THE MONTH…………..61 DEPARTURE………-12
TOTAL COOLING UNITS FOR THE SEASON…………109 DEPARTURE………+12
TOTAL COOLING UNITS LAST SEASON TO DATE…….127 DIFFERENCE……..-18
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….20 NE AT 7:44 A.M. *
ASOS……………………21 NE AT 7:42 A.M.
DAVIS…………………..19 SE AT 4:54 P.M. RMY 20
FASTEST MILE FOR YESTERDAY…………………13 E AT 3:38 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………15 E AT 3:39 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..14 E AT 3:35 P.M.
AVERAGE WIND SPEED AND DIRECTION……………9.5 NE
ASOS…………………..10.0
DAVIS…………………..8.5 ENE [070 Deg.]
* Last of several occurrences
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.12
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.46 DEPARTURE……-2.16
ASOS…………1.51
TOTAL PRECIPITATION FOR THE YEAR……….21.53 DEPARTURE……-4.75
ASOS………….21.95
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
6/1 71/54/63/+1/0.00/860/95 26 NE AERO 30 NE RMY N/A
6/2 68/54/61/-1/0.00/444/49 21 NE AERO 22 NE RMY 21
6/3 70/57/64/+2/T/173/19 16 SSW AERO 17 SSW RMY 16
6/4 81/61/71/+8/0.00/491/54 18 S AERO 21 S RMY 20
6/5 67/60/64/+1/0.76/000/00 32 SSE AERO 36 SSE RMY 34
6/6 80/63/72/+9/0.00/747/82 26 W AERO 28 W RMY 27
6/7 83/58/71/+7/0.18/602/66 32 WNW AERO 36 WNW RMY 33 TSTM
6/8 72/52/62/-2/0.05/684/75 37 WNW AERO 41 WNW RMY 38 TSTM
6/9 67/48/58/-6/0.00/466/51 41 WNW AERO 45 WNW RMY 40
6/10 71/50/61/-4/0.00/841/92 25 W AERO 28 W RMY 26
6/11 68/52/60/-5/0.06/…/.. 30 SSW AERO 35 SSW RMY 31
6/12 76/51/64/-1/T/…/.. 41 W AERO 48 W RMY 42
6/13 70/49/60/-5/0.00/…/.. 36 NW AERO 46 NW RMY 38
6/14 77/50/64/-2/0.00/…/.. 32 NNW AERO 38 NNW RMY 33
6/15 83/60/72/+6/0.00/…/.. 22 NW AERO 26 NW RMY 25
6/16 82/62/72/+6/0.00/…/.. 26 E AERO 28 E RMY 27
6/17 77/59/68/+1/T/…/.. 25 E AERO 28 E RMY 23 TSTM
6/18 75/55/65/-2/0.00/…/.. 22 SSW AERO 24 SSE RMY N/A
6/19 79/55/67/+0/0.00/…/.. 32 S AERO 35 S RMY 36
6/20 81/57/69/+1/0.00/…/.. 25 S AERO 28 S RMY 27
6/21 82/61/72/+1/0.40/…/.. 30 WSW AERO 31 W* RMY 33
6/22 79/59/69/+1/0.01/…/.. 31 NW AERO 35 NW RMY 31
6/23 84/56/70/+2/0.00/…/.. 17 S AERO 18 S RMY 18
6/24 77/58/68/-1/0.00/…/..
6/25 low temp since midnight is 60F; normal low now 60F
DAILY RECORDS FOR JUNE 2016
None so far
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
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
RECORDS FOR JUNE 26
HIGH 96F IN 1952
LOW 45F IN 1986
PRECIP 1.52 INS IN 1945
PEAK GUST 48 MPH N IN 1998
TODAY’S REPORT PREPARED BY: Robert Skilling
