Wednesday, June 28, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 28, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
DRY AIR FOLLOWS EVENING THUNDERSTORMS
Thunderstorms north of Boston and west of the observatory
passed through the area last evening. Areas north of
Boston saw hail as large a 0.90 inches in diameter, but
only 0.11 in. of rain fell at BHO. Winds were gusting up
to 35 MPH.
High pressure and dry air has made today quite pleasant.
Skies were clear most of the morning. Scattered cumulus
appeared in the afternoon. Visibility remained at 70 miles.
By 1:00PM, temperatures had reached 74F and dew points had
fallen into the upper 40s.
Today’s Observations:
7 A.M.
Weather: Few distant cumulus NW, few distant cirrus E-S
Temperature: 58F; Dew Point: 53F; Wind: W at 10G16 kts
Sea-level pressure: 30.03 ins. Hg, rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 58F
6-hr Min temp: 52F
24-hr precip: 0.11 in.
BHO SA 1155 CLR 70 169/58/53/2810G16/003/ FEW DSNT CU NW FEW DSNT
CI E-S/ 8/101 51009 MANUAL 70011 ASOS 70010 10058 20052
10 A.M.
Weather: Few cumulus in all directions, few distant cirrus E-SE
Temperature: 69F; Dew Point: 53F; Wind: W at 10G16 kts
Sea-level pressure: 30.03 ins. Hg, rising then falling
Visibility: 70 miles
BHO SA 1455 CLR 70 169/69/53/2810G16/003/ FEW CU ALQDS
FEW DSNT CI E-SE/ 8/101 50000
1 P.M.
Weather: Scattered cumulus, fire SE of observatory causing smoke
Temperature: 74F; Dew Point: 49F; Wind: WNW at 10G17 kts
Sea-level pressure: 30.05 ins. Hg, steady then rising
Visibility: 70 miles
6-hr Max temp: 74F
6-hr Min temp: 58F
6-hr precip: Trace
BHO SA 1755 49 SCT 70 177/74/49/2910G17/005/ FIRE SE OF OBSVTRY
CAUSING SMK/ 8/100 53008 10074 20058
SUMMARY FOR TUESDAY, JUNE 27, 2017
TEMPERATURE (DEGREES F)
MAX…..74 NORMAL…..78
MIN…..55 NORMAL…..60
MEAN….65 NORMAL…..69
DEPARTURE FROM 30-YEAR NORMAL…………………….-4
TOTAL DEPARTURE FOR THE MONTH……………………+51 [+1.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………0 DEPARTURE……….-1
TOTAL HEATING UNITS FOR THE MONTH…………..62 DEPARTURE……….-9
TOTAL HEATING UNITS FOR THE SEASON………..5724 DEPARTURE……..-650
TOTAL HEATING UNITS LAST SEASON TO DATE……5282 DIFFERENCE…….+442
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE……….-5
TOTAL COOLING UNITS FOR THE MONTH………….132 DEPARTURE………+44
TOTAL COOLING UNITS FOR THE SEASON…………188 DEPARTURE………+76
TOTAL COOLING UNITS LAST SEASON TO DATE…….129 DEPARTURE………+59
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….43 S AT 2:32 P.M.
AERO……………………45 S AT 2:31 P.M.
ASOS……………………46 S AT 2:27 P.M.
DAVIS…………………..43 S AT 2:31 P.M. RMY 45
FASTEST MILE FOR YESTERDAY…………………34 S AT 2:59 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………32 S AT 3:00 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..29 S AT 2:31 P.M.
AVERAGE WIND SPEED AND DIRECTION………….11.3 S
ASOS…………………….M
DAVIS………………….9.4 SSW [212 DEG.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.11 DEPARTURE……-0.01
ASOS…………..0.10
TOTAL PRECIPITATION FOR THE MONTH……….5.92 DEPARTURE……+1.94
ASOS…………..5.98
TOTAL PRECIPITATION FOR THE YEAR……….31.26 DEPARTURE……+4.62
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/+5/0.06/706/78 39 NW AERO 39 NW RMY 41
6/2 70/50/60/-2/T/652/72 32 WNW AERO 35 WNW RMY 34
6/3 66/47/57/-5/0.01/472/52 23 NW AERO 25 NW RMY 24
6/4 71/49/60/-3/0.28/490/54 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/-16/1.36/000/00 40 ENE AERO 43 ENE RMY 43
6/7 65/47/56/-8/0.05/519/57 21 NNE AERO 18 NE* RMY 20
6/8 76/52/64/0/0.00/602/66 21 SSE AERO 21 SSE RMY 18
6/9 78/53/66/+2/0.16/438/48 48 N AERO 54 N RMY 52 TSTM
6/10 83/59/71/+6/0.00/722/79 25 SSW AERO 28 SSW RMY 27
6/11 89/64/77/+12/0.00/704/77 29 SW AERO 32 WSW RMY 30
6/12 94/69/82/+17/0.00/851/93 28 W AERO 29 W RMY 28
6/13 92/67/80/+15/0.03/796/87 25 W AERO 28 WNW RMY 28
6/14 78/56/67/+1/0.02/889/97 20 S AERO 20 S RMY 20
6/15 75/54/65/-1/0.00/870/95 25 SSW AERO 29 S RMY 30
6/16 70/56/63/-3/2.14/073/08 28 S AERO 29 S RMY N/A
6/17 70/58/64/-3/0.01/000/00 18 S AERO 18 S RMY N/A
6/18 82/65/74/+7/T/394/43 33 SSW*AERO 35 SSW RMY 37
6/19 82/67/75/+8/0.05/312/34 40 S AERO 43 S RMY 43
6/20 84/66/75/+7/0.25/651/71 38 SW AERO 44 SW RMY 40
6/21 83/64/74/+6/0.00/734/80 29 W AERO 30 W RMY 30
6/22 83/59/71/+3/0.00/779/85 23 W AERO 22 W RMY 21
6/23 88/66/77/+9/0.00/…/.. 33 S AERO 36 S RMY 36
6/24 84/68/76/+7/0.19/…/.. 28 WNW AERO 31 WNW RMY 32
6/25 83/61/72/+3/T/…/.. 29 WNW AERO 35 WNW RMY 34
6/26 79/57/68/-1/0.00/…/.. 24 W AERO 24 W RMY 23
6/27 74/55/65/-4/0.11/…/.. 43 S AERO 45 S RMY 45
6/28 Low temp since midnight is 52F; normal low is now 61F
DAILY RECORDS FOR JUNE
6/12/17: DAILY RECORD MAXIMUM TEMPERATURE OF 94F,
BREAKS PREVIOUS RECORD OF 92F SET IN 1973
6/12/17: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 69F,
TIES PREVIOUS RECORD SET IN 1942
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JUNE 28
HIGH 95F IN 1991
LOW 47F IN 1970
PRECIP 2.09 INS IN 1938
PEAK GUST 52 MPH WSW IN 1993
RECORDS FOR JUNE 29
HIGH 93F IN 1933
LOW 42F IN 1919
PRECIP 1.60 INS IN 1889
PEAK GUST 49 MPH S IN 1957
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
