Saturday, June 26, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, JUNE 26, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0409E
SUNSET: 1925E
MOSTLY CLOUDY WITH THE WIND PICKING UP IN THE
AFTERNOON HOURS….
Today we are dealing with high humidity and mostly
cloudy skies. There is a significant breeze from the
southwest that gives some relief from a 70 degree dew
point. Visibility is limited to 40 miles at most,
being slightly lower due to a fog this morning that
seemed to hang around for most of the day. Humidity
is holding between 70% and 80%, making it a less than
favorable day for a hike.
Wind speeds are currently 20 mph, with frequent gusts around
30 mph. Pressure is on a steady drop, and building cumulus
can be seen across the sky. Showers to the west are being
seen.
The high temperature so far today is 81F, this is 3 degrees
above the normal maximum of 78F. The low temperature so
far today is 61F, which is a degree above the normal
minimum of 60F.
Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus
Temperature: 68F; Dew Point: 66F; Relative Humidity: 92%
Wind: SSW @ 11 kts
Sea-level pressure: 30.28 in. Hg; rising steadily
Visibility: 30 miles, thin fog
6-hr Max temp: 68F
6-hr Min temp: 61F
24-hr Precip: Trace
BHO SA 1155 15 OVC 30 255/68/66/2111/028/ THN F ALQDS/ 8/8//
51008 70000 10068 20061
10 A.M.
Weather: Broken stratocumulus and cirrostratus
Temperature: 78F; Dew Point: 70F; Relative Humidity: 77%
Wind: SSW @ 12G22 kts
Sea-level pressure: 30.26 in Hg; falling steadily
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 20 BKN 250 BKN 40 249/78/70/2112G22/026/ 8/801
58006
1 P.M.
Weather: Broken stratocumulus and cirrus, breaks in
overcast to the NE
Temperature: 78F, Dew point: 69F; Relative Humidity: 74%
Wind: SSW @ 18G26 kts, peak of 30 mph SSW at 12:51 P.M.
Sea-level pressure: 30.23 in Hg; falling steadily
Visibility: 40 miles
6-hr Max temp: 81F
6-hr Min temp: 68F
6-hr Precip: 0.00 ins.
BHO SA 1755 30 BKN 250 BKN 40 238/78/69/2018G26/023/ BINOVC
NE PK WND 2126/51/ 8/801 58011 10081 20068
SUMMARY FOR FRIDAY, JUNE 25, 2021
TEMPERATURE (DEGREES F)
MAX…….71 NORMAL…..78
MIN…….57 NORMAL…..60
MEAN……64 NORMAL…..69
DEPARTURE FROM 30-YEAR (1981-2010) NORMAL……..-5
TOTAL DEPARTURE FOR THE MONTH………………..+95 [+3.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL THRU JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………… 1 DEPARTURE……..0
TOTAL HEATING UNITS FOR THE MONTH……………19 DEPARTURE……-51
TOTAL HEATING UNITS FOR THE SEASON…………5597 DEPARTURE…..-775
TOTAL HEATING UNITS LAST SEASON TO DATE…….5852 DEPARTURE…..-255
COOLING DEGREE DAYS (SEASON JAN THRU DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………… 0 DEPARTURE…….-5
TOTAL COOLING UNITS FOR THE MONTH…………..125 DEPARTURE……+48
TOTAL COOLING UNITS FOR THE SEASON………….154 DEPARTURE……+53
TOTAL COOLING UNITS LAST SEASON TO DATE……..157 DEPARTURE…….-3
PEAK WIND GUST (MPH):
420C/Official…………..23 S @ 9:51 P.M.
AEROVANE (south tower)…..23 S @ 10:42 P.M.
ASOS…………………..22 S @ 9:50 P.M.
VECTOR #1………………23 @ 11:55 P.M.
VECTOR #2 (south tower)….23 @ 9:49 P.M.
DAVIS #1……………….20 SSW @ 10:03 P.M.
DAVIS #2 (south tower)…..24 SSE @ 8:38 P.M.
RMY……………………23 @ 9:49 P.M.
MERLIN…………………23
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 S @ 11:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….16 S @ 11:57 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 11:55 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 E @ 4:08 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 S @ 10:39 P.M.
MAXIMUM 2-MINUTE RMY AVERAGE………………..16 SSW @ 11:56 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…… 7.8 ENE [188 total miles] ASOS………………… 8.0
VECTOR #1……………. 8.3
DAVIS #1…………….. 8.2 ESE
DAVIS #2…………….. 8.4 E
RMY…………………. 7.8 SE
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……TRACE DEPARTURE…..-0.12
ASOS………….0.00
TOTAL PRECIPITATION FOR THE MONTH………….2.18 DEPARTURE….-1.56
ASOS………….2.06
TOTAL PRECIPITATION FOR THE YEAR………….22.84 DEPARTURE….-3.56
ASOS………..22.92
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
06/01 74/50/62/0/0.00/425/47 20 WSW AERO 24 WSW RMY 22
06/02 80/55/68/+6/0.00/553/61 28 S AERO 25 S RMY 28
06/03 73/56/65/+3/0.01/073/08 29 SSW AERO 29 SSW RMY 29
06/04 77/61/69/+6/0.02/054/06 23 SW AERO 25 WSW RMY 25 TSTM
06/05 87/60/74/+11/0.00/801/88 32 SSW AERO 37 SSW RMY 35
06/06 91/69/80/+17/0.00/819/90 30 WSW AERO 31 WSW RMY 32
06/07 92/69/81/+17/0.00/838/92 31 SSW AERO 35 SSW RMY 34
06/08 92/69/81/+17/0.06/456/50 24 WSW AERO 25 WSW RMY 27 TSTM
06/09 88/70/79/+15/0.02/530/58 21 N AERO 23 NNW RMY 23
06/10 70/53/62/-3/0.00/795/87 28 NE AERO 28 NE RMY 28
06/11 70/51/61/-4/0.13/411/45 21 SSE AERO 22 SSE RMY 22
06/12 72/53/63/-2/0.43/430/47 20 WSW AERO 18 WSW RMY 20
06/13 82/56/69/+4/0.00/860/94 26 SSW AERO 29 SSW RMY 29
06/14 65/56/61/-5/0.63/027/03 28 S AERO 30 SSE RMY 29
06/15 77/61/69/+3/T/357/39 18 NE AERO 20 NE RMY 18 TSTM
06/16 73/56/65/-1/0.00/769/84 27 NNW AERO 31 NNW RMY 27
06/17 77/52/65/-2/0.00/880/96 21 WNW AERO 21 NW RMY 23
06/18 82/56/69/+2/T/789/86 26 WSW AERO 28 WSW RMY 30
06/19 86/63/75/+8/0.09/504/55 30 SW AERO 32 SW RMY 32
06/20 85/63/74/+6/0.00/816/89 24 S AERO 25 SSW RMY 25
06/21 83/65/74/+6/0.00/…/.. 37 SSW AERO 39 SSW RMY 39
06/22 84/58/71/+3/0.68/…/.. 30 NW AERO 31 NW RMY 31 TSTM
06/23 73/52/63/-5/0.00/…/.. 25 NW AERO 24 NW RMY 26
06/24 76/58/67/-2/0.00/…/.. 25 SE AERO 24 SE RMY 25
06/25 71/57/64/-5/T/…/.. 23 S AERO 23 S RMY 23
06/26 The low since midnight is 61F, the daily normal low is 60F
RECORDS FOR THE MONTH:
High minimum on the 7th of 69F, beating the old record of
66F set in 1922 and 1953.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JUNE 26
HIGH 96F IN 1952
LOW 45F IN 1986
PRECIP 1.22 INS IN 1938
PEAK GUST 48 MPH N IN 1998
RECORDS FOR JUNE 27
HIGH 93F IN 1999, 2007
LOW 46F IN 1897
PRECIP 1.72 INS IN 1938
PEAK GUST 55e N IN 1945
TODAY’S REPORT PREPARED BY: Benjamin Turner
