Thursday, July 2, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, JULY 2, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
PARTLY CLOUDY WITH AN INCREASE OF VISIBILITY
AFTER SOME MORNING FOG….
We observed fog and low clouds this morning that
dissipated quickly after the 7 A.M. observation.
Visibility increased from 15 miles this morning
to 50 miles in the afternoon, with a distant
cumulonimbus cloud being seen to the northwest at
1 P.M. Wind remained low today, only reaching a max
of 12 mph. The average wind speed was 6 mph or
less.
The high so far today is 84 degrees, this is 5
degrees below the daily normal high of 79F. The low
since midnight is 61F, which is a degree below the
daily normal low of 62F.
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus
Temperature: 66F; Dew Point: 65F; Relative Humidity: 97%
Wind: W at 3 kts, wind light and variable
Sea-level pressure: 29.84 ins. Hg: rising, then more slowly
Visibility: 15 miles, hazy
6-hr Max temp: 66F
6-hr Min temp: 61F
24-hr Precip: 0.01 ins.
24-hr Frozen: 0.0 ins.
BHO SA 1155 20 SCT 15 104/66/65/2703/984/ WND L/V HAZY/
8/400 70001 50005 10066 20061
10 A.M.
Weather: Scattered cumulus
Temperature: 77F; Dew Point: 64F; Relative Humidity: 65%
Wind: SW at 3 kts, wind light and variable
Sea-level pressure: 29.82 ins. Hg: falling steadily
Visibility: 40 miles
3-hr Precip: 0.00 ins.
3-hr Frozen: 0.0 ins.
BHO SA 1455 40 SCT 40 096/77/64/2203/982/ WND L/V/ 8/100
58008
1 P.M.
Weather: Scattered cumulus, distant cumulonimbus to
the NW
Temperature: 84F; Dew Point: 63F; Relative Humidity: 50%
Wind: W at 5 kts, light
Sea-level pressure: 29.79 ins. Hg: falling steadily
Visibility: 50 miles
6-hr Max temp: 84F
6-hr Min temp: 66F
6-hr Precip: 0.00 ins.
6-hr Frozen: 0.0 ins.
BHO SA 1755 40 SCT 50 089/84/63/2705/979/ DSNT CB NW WND
LGT/ 8/300 58007 10084 20066
SUMMARY FOR WEDNESDAY, JULY 1, 2020
TEMPERATURE (DEGREES F)
MAX…..76 NORMAL…..79
MIN…..63 NORMAL…..61
MEAN….70 NORMAL…..70
DEPARTURE FROM 30-YEAR NORMAL…………….. 0
TOTAL DEPARTURE FOR THE MONTH…………….. 0 [-0.2 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………. 5 DEPARTURE……. -1
TOTAL COOLING UNITS FOR THE MONTH……………..5 DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE SEASON…………..189 DEPARTURE…….+54
TOTAL COOLING UNITS LAST SEASON TO DATE……….95 DEPARTURE…….+94
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..16 E AT 12:57 P.M.
AERO…………………….14 E AT 12:57 P.M.
ASOS…………………….16 ENE AT 12:55 P.M.
DAVIS……………………15 E AT 12:49 P.M RMY 14
FASTEST MILE FOR YESTERDAY………………….10 E AT 1:18 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….13 E AT 12:58 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………13 E AT 12:57 P.M.
AVERAGE WIND SPEED AND DIRECTION………….. 3.9 SSW
ASOS………………….. 4.8
DAVIS…………………. 4.5 SSW [204 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01 DEPARTURE……-0.10
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.01 DEPARTURE……-0.10
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE YEAR……….27.36 DEPARTURE……+0.38
ASOS………….28.01
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 64/42/53/-9/T/0.0/000/00 28 WNW AERO 29 WNW RMY 28
06/02 72/45/59/-3/…./0.0/689/76 28 W AERO 27 W RMY 28
06/03 79/55/67/+5/T/0.0/400/44 29 W AERO 28 W RMY 26
06/04 87/62/75/+12/…./0.0/673/74 26 W AERO 25 S RMY N/A
06/05 80/65/73/+10/…./0.0/300/33 28 SSW AERO 28 SSW RMY N/A TSTM
06/06 86/57/72/+9/…./0.0/301/33 55 SW AERO 59 SW RMY 59 TSTM
06/07 68/54/61/-3/0.00/0.0/255/28 24 NW AERO 24 NW RMY N/A
06/08 77/51/64/0/0.00/0.0/866/95 25 W AERO 24 W RMY 25
06/09 77/60/69/+5/T/0.0/110/12 23 E AERO 21 E RMY N/A
06/10 70/58/64/-1/T/0.0/658/72 25 E AERO 24 E RMY N/A
06/11 71/64/68/+3/0.62/0.0/165/18 40 S AERO 40 S RMY 42
06/12 82/63/73/+8/0.00/0.0/705/77 26 W AERO 25 W RMY 27
06/13 71/53/62/-3/0.00/0.0/669/73 21 WNW AERO 20 WNW RMY N/A
06/14 67/49/58/-8/0.00/0.0/852/93 21 E AERO 21 ENE RMY 21
06/15 67/53/60/-6/5/0/0.0/705/77 21 NE AERO 16 ENE RMY 20
06/16 73/54/64/-2/0.00/0.0/889/97 18 E AERO 18 E RMY 18
06/17 78/57/68/+1/0.00/0.0/889/97 20 S AERO 20 S RMY 20
06/18 86/59/73/+6/0.00/0.0/715/78 22 S AERO 22 SSW RMY 22
06/19 86/66/76/+9/0.00/0.0/789/86 22 S AERO 22 S RMY 21
06/20 90/65/78/+10/0.00/0.0/834/91 22 S AERO 21 S RMY 21
06/21 90/66/78/+10/0.83/0.0/514/56 33 ESE AERO 35 ESE RMY 33 TSTM
06/22 77/65/71/+3/0.00/0.0/…/.. 15 E AERO 17 S RMY 14
06/23 85/65/75/+7/0.00/0.0/…/.. 27 S AERO 24 S RMY 26
06/24 84/66/75/+6/0.00/0.0/…/.. 25 S AERO 24 S RMY 25
06/25 84/63/74/+5/0.00/0.0/…/.. 29 W AERO 29 W RMY 29
06/26 83/65/74/+5/0.02/0.0/…/.. 25 S AERO 25 S RMY 27
06/27 82/65/74/+5/0.05/0.0/…/.. 21 S AERO 20 S RMY 20
06/28 84/62/73/+3/3.27/0.0/…/.. 35 W AERO 33 N RMY 37 TSTM
06/29 71/61/66/-4/…./0.0/…/.. 18 NE AERO 18 NE RMY 18 TSTM
06/30 68/62/65/-5/…./…/…/.. 14 ENE AERO 14 ENE RMY 13
Record rainfall on the 28th of 3.27″. Old record 2.09″ in 1938
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
07/01 76/63/70/0/0.01/…/…/.. 16 E AERO 14 E RMY 14
07/02 The low since midnight is 63F, the daily normal low is 61F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 2
HIGH 95F IN 1963
LOW 47F IN 1988
PRECIP 1.42 INS IN 1986
PEAK GUST 45 MPH SW IN 1999
RECORDS FOR JULY 3
HIGH 99F IN 1911
LOW 47F IN 1914
PRECIP 1.36 IN 1985
PEAK GUST 52 MPH NW IN 1963
TODAY’S REPORT PREPARED BY: Benjamin Turner
