Saturday, July 4, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, JULY 4, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
FOGGY IN THE MORNING, WITH PARTLY
CLOUDY SKIES IN THE AFTERNOON….
There was a significant fog this morning,
limiting visibility to only a mile. As the
day went on, visibility rose to 45 miles
with a distant haze. Skies also became
partly cloudy, with wind being very light
from the north. Fireworks were seen in all
directions, starting around 7:30 P.M.
The high so far today is 77 degrees,
this is 3 degrees below the daily normal
high of 80F. The low since midnight is 60F,
which is 2 degrees below the daily normal
low of 62F.
Happy 4th of July!!!!!
Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus
Temperature: 61F; Dew Point: 61F; Relative Humidity: 100%
Wind: NNE at 4 kts, light and variable
Sea-level pressure: 29.95 ins. Hg: steady, then rising
Visibility: 1 mile, fog
6-hr Max temp: 61F
6-hr Min temp: 60F
24-hr Precip: 0.00 ins.
BHO SA 1155 E15 OVC 1F 143/61/61/0304/995/ WND L/V/ 8/4//
51012 10061 20060
10 A.M.
Weather: Broken stratocumulus, cirrus
Temperature: 68F; Dew Point: 62F; Relative Humidity: 81%
Wind: NNE at 4 kts, light and variable
Sea-level pressure: 29.97 ins. Hg: rising, then more slowly
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 20 BKN 250 BKN 40 148/68/62/0304/997/ WND L/V/
8/402 53005
1 P.M.
Weather: Scattered cumulus and cirrus
Temperature: 76F; Dew Point: 64F; Relative Humidity: 67%
Wind: NE at 2 kts, light and variable
Sea-level pressure: 29.95 ins. Hg: falling, then steady
Visibility: 45 miles
6-hr Max temp: 77F
6-hr Min temp: 61F
6-hr Precip: 0.00 ins.
BHO SA 1755 40 SCT 250 SCT 45 142/76/64/0402/995/ WND L/V/
8/102 58006 10077 20061
SUMMARY FOR FRIDAY, JULY 3, 2020
TEMPERATURE (DEGREES F)
MAX…..73 NORMAL…..80
MIN…..60 NORMAL…..62
MEAN….67 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL…………….. -4
TOTAL DEPARTURE FOR THE MONTH…………….. 0 [-0.2 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………….2 DEPARTURE…….. +4
TOTAL COOLING UNITS FOR THE MONTH…………….16 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE SEASON………….. 200 DEPARTURE…….+53
TOTAL COOLING UNITS LAST SEASON TO DATE……….117 DEPARTURE…….+83
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..30 NE AT 8:15 A.M.
AERO…………………….28 NE AT 8:15 A.M.
ASOS…………………….30 NE AT 8:15 A.M.
DAVIS……………………30 ENE AT 8:15 A.M RMY 30
FASTEST MILE FOR YESTERDAY………………….20 NE AT 8:16 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….20 NE AT 8:16 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………21 NE AT 8:16 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..10.8 NE
ASOS…………………..10.9
DAVIS………………….11.2 NE [36 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.11
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….0.00 DEPARTURE……-0.22
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE YEAR……….27.35 DEPARTURE……+0.16
ASOS………….28.02
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 76/63/70/0/0.00/…/…/.. 16 E AERO 14 E RMY 14
07/02 86/61/74/4/0.00/…/…/.. 30 WSW AERO 25 WSW RMY 33
07/03 73/60/67/-4/0.00/…/…/.. 30 NE AERO 28 NE RMY 30
07/04 The low since midnight is 60F, the daily normal low is 62F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 4
HIGH 98F IN 1911, 1919, 1949
LOW 48F IN 1914
PRECIP 2.48 IN 2014
PEAK GUST 50e MPH WNW IN 1949
RECORDS FOR JULY 5
HIGH 98F IN 1911
LOW 48F IN 1920, 1927 & 1979
PRECIP 1.45 INS IN 1922
PEAK GUST 44e N IN 1944
TODAY’S REPORT PREPARED BY: Benjamin Turner
