Friday, June 24, 2016

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JUNE 24, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

VERY SUNNY, DRY STRETCH OF PLEASANT WEATHER CONTINUES
Temperatures rise from 58F this morning to 76F by the
early afternoon with dew points in low 50’s to upper 40’s
as northeast winds veer to east.  It is just a perfect
late June day. Visibility has been prevailing at 60 miles
with just some light distant haze.

Today’s Observations:

7 A.M.
Weather: Clear, sky SKC
Temperature: 68F; Dew Point: 53F; Wind: NE at 6 kts
Sea-level pressure: 30.03 in. Hg, rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 68F
6-hr Min temp: 58F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 60 170/68/53/0406/003/ SKC LGT DSNT HZ/
51025 10068 20058

10 A.M.
Weather: Clear, few small cumulus forming distant NNW-N
Temperature: 70F; Dew Point: 50F; Wind: NE at 8 kts,
Wind: Direction variable NNE-E
Sea-level pressure: 30.09 in. Hg, rising then more slowly
Visibility:  65 miles, except 70 miles NW, light distant haze
BHO SA 1455 CLR 65 190/70/50/0508/009/ FEW SML CU FRMG DSNT
NNW-N VSBY NW 70 LGT DSNT HZ WND 02V08/ 8/100 51020

1 P.M.
Weather: Clear, small cumulus distant SSW-W-NNW, few cirrus
distant SSE-S
Temperature: 75F; Dew Point: 52F; Wind: ENE at 9 kts
Wind: Direction variability NE-ESE
Sea-level pressure: 30.10 in. Hg, rising then falling but still higher
than 3 hours ago
Visibility: 60 miles, light distant haze
6-hr Max temp: 76F
6-hr Min temp: 68F
BHO SA 1755 CLR 60 194/75/52/0709/010/ SML CU DSNT SSW-W-NNW
FEW CI DSNT SSE-S LGT DSNT HZ WND 04V110/ 8/101 50004 10076 20068

SUMMARY FOR THURSDAY, JUNE 23, 2016

TEMPERATURE (DEGREES F)
MAX…..84   NORMAL…..77
MIN…..56   NORMAL…..59
MEAN….70   NORMAL…..68

DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH……………………+21 [+0.7 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………-33
TOTAL HEATING UNITS FOR THE SEASON………..5282   DEPARTURE…….-1088
TOTAL HEATING UNITS LAST SEASON TO DATE……6491   DIFFERENCE……-1209

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………5   DEPARTURE……….+1
TOTAL COOLING UNITS FOR THE MONTH…………..58   DEPARTURE………-10
TOTAL COOLING UNITS FOR THE SEASON…………106   DEPARTURE………+14
TOTAL COOLING UNITS LAST SEASON TO DATE…….120   DIFFERENCE……..-14

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….17 S   AT 12:46 P.M.
ASOS……………………18 S   AT 12:47 P.M.
DAVIS…………………..17 S   AT 12:46 P.M. RMY 18
FASTEST MILE FOR YESTERDAY…………………N/A
MAXIMUM 2-MINUTE ASOS AVERAGE………………13 SW  AT  5:15  P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..13 S   AT 12:48  P.M.
AVERAGE WIND SPEED AND DIRECTION……………7.3 WSW
ASOS……………………7.7
DAVIS…………………..6.6 WSW [240 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.11
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.46  DEPARTURE……-2.04
ASOS…………1.51
TOTAL PRECIPITATION FOR THE YEAR……….21.53  DEPARTURE……-4.63
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 low temp since midnight is 58F; 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 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: Robert Skilling