Saturday, August 8, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, AUGUST 8, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
A DRY DAY WITH VERY FEW CLOUDS IN THE AFTERNOON….
Today was fair, with the humidity dipping down to
35% by the 1 P.M. observation. We started off
mostly cloudy, but skies cleared up significantly
as the day went on. Wind has been light and
northeasterly, making for a cool ocean breeze in
conjunction with a dryer than normal summer day.
Pressure was on the rise this morning, but has
began to drop off slightly since 11 A.M. Visibility
also reached 70 miles, which is much more than
what the visibility has been in the preceding
days. Great day for a tour! We’re open until 4 P.M.
The high so far today is 83F, which is 3 degrees
below the daily normal high of 80F. The low since
midnight is 64F, which is a degree above the
daily normal low of 63F.
PRELIMINARY STATS FOR JULY 2020
TEMPERATURE, Deg. F
Avg. Max. 83.5 [+2.7]
Avg. Min. 66.0 [+3.1]
Mean 74.8 [+2.9]
24-hour corrected mean: 73.6
Max. for month: 95F on the 28th
Min. for month: 57F on the 16th
COOLING DEGREE DAYS
Total cooling units: 303 [+81]
Total for the season: 487 [+136]
Total for last season: 411
PRECIPITATION, Inches
Total: 1.72 [-2.30]
Greatest in 24 hrs: N/A
WIND, mph
Avg. uncorrected wind speed: 9.1 mph
Avg. corrected wind speed: 9.8 mph
Prevailing wind direction: S [12%]
Peak gust and direction: 39 S on the 11th
SUNSHINE:
Campbell-Stokes card minutes: N/A
Astronomical total minutes: N/A
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, broken altocumulus and
cirrostratus
Temperature: 68F; Dew Point: 62F; Relative Humidity: 80%
Wind: NE at 4 kts, wind light and variable
Sea-level pressure: 30.19 ins. Hg: Rising steadily
Visibility: 40 miles
6-hr Max temp: 68F
6-hr Min temp: 64F
24-hr Precip: Trace
BHO SA 1155 55 SCT 130 BKN 220 BKN 40 224/68/62/0604/019/
WND L/V/ 8/855 53011 10068 20064
10 A.M.
Weather: Scattered stratocumulus, broken Altocumulus
/Altostratus
Temperature: 74; Dew Point: 58F; Relative Humidity: 58%
Wind: ENE at 4 kts (wind light and variable)
Sea-level pressure: 30.21 ins. Hg: rising steadily
Visibility: 50 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 50 SCT 130 BKN 50 230/74/58/0704/021/ WND L/V/
8/850 53006
1 P.M.
Weather: Few cumulus and cirrostratus
Temperature: 82F; Dew Point: 54F; Relative Humidity: 38%
Wind: ENE at 7 kts
Sea-level pressure: 30.16 ins. Hg: falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 83F
6-hr Min temp: 68F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 70 215/82/54/0307/016/ FEW CU/CS ALQDS/ 8/108
56015 10083 20068
SUMMARY FOR FRIDAY, AUGUST 7, 2020
TEMPERATURE (DEGREES F)
MAX…..79 NORMAL…..81
MIN…..65 NORMAL…..63
MEAN….72 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL………………0
TOTAL DEPARTURE FOR THE MONTH……………..+36 [+4.9 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY………………7 DEPARTURE…….0
TOTAL COOLING UNITS FOR THE MONTH……………..85 DEPARTURE……+35
TOTAL COOLING UNITS FOR THE SEASON……………572 DEPARTURE…..+171
TOTAL COOLING UNITS LAST SEASON TO DATE……….468 DEPARTURE…..+104
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..16 NE AT 12:30 P.M.
AERO…………………….16 ENE AT 12:28 P.M.
ASOS…………………….16 ENE AT 7:00 A.M.
DAVIS……………………17 ENE AT 5:14 A.M
RMY N/A MERLIN N/A
FASTEST MILE FOR YESTERDAY………………….13 E AT 12:30 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….13 E AT 7:00 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………14 E AT 9:37 P.M.
AVERAGE WIND SPEED AND DIRECTION……………8.1 NE
ASOS……………………8.4
DAVIS…………………..8.7 ENE [75 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…Trace DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.23 DEPARTURE……-0.81
ASOS…………..0.23
TOTAL PRECIPITATION FOR THE YEAR……….29.30 DEPARTURE……-2.73
ASOS………….30.04
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 76/63/70/0/0.00/228/25 16 E AERO 14 E RMY 14 TSTM
07/02 86/61/74/+4/0.00/803/88 30 WSW AERO 25 WSW RMY 33
07/03 73/60/67/-4/0.00/091/10 30 NE AERO 28 NE RMY 30
07/04 79/60/70/-1/0.00/565/62 16 S AERO 16 S RMY 16
07/05 83/63/73/+2/0.54/373/41 24 NW AERO 30 NW RMY 26 TSTM
07/06 73/60/67/-4/0.00/482/53 20 ENE AERO 16 NNE RMY 18
07/07 78/60/69/-2/0.00/454/50 25 S AERO 25 S RMY 26
07/08 83/64/74/+2/0.00/227/25 32 SSW AERO 32 SSW RMY 32
07/09 89/70/80/+8/0.00/834/92 24 S AERO 23 S RMY 22
07/10 83/70/77/+5/0.05/109/12 30 SSE AERO 32 SSE RMY N/A
07/11 85/70/78/+6/0.00/614/68 39 S AERO 39 S RMY 38
07/12 86/70/78/+6/0.00/830/92 28 WSW AERO 28 WSW RMY 29
07/13 82/69/76/+4/0.23/306/34 30 SSE AERO 31 SSE RMY 30 TSTM
07/14 78/63/71/-1/0.00/369/41 26 ENE AERO 25 ENE RMY 26
07/15 72/59/66/-6/0.00/539/60 21 NE AERO 21 NE RMY N/A
07/16 73/57/65/-7/0.00/815/91 21 E AERO 21 E RMY 19
07/17 71/57/64/-8/0.19/027/03 24 SSW AERO 24 SSW RMY 25
07/18 89/66/78/+6/0.00/822/92 18 W AERO 17 W RMY 19
07/19 92/69/81/+9/0.00/722/81 28 S AERO 28 S RMY 26
07/20 91/72/82/+10/T/481/54 25 SSW AERO 25 SSW RMY N/A
07/21 88/68/78/+6/0.00/799/90 25 W AERO 25 W RMY 24
07/22 80/67/74/+2/…./275/31 16 ENE AERO M M RMY 16
07/23 88/68/78/+6/0.48/203/23 31 N AERO 32 N RMY 31 TSTM
07/24 81/68/75/+3/0.00/476/54 15 ENE AERO 15 ENE RMY 16
07/25 88/67/78/+6/0.00/845/96 18 W AERO 18 WNW RMY N/A
07/26 89/70/80/+8/0.00/632/72 27 W AERO 28 W RMY 27
07/27 94/72/83/+11/0.00/823/94 23 SW AERO 25 SW RMY N/A
07/28 95/74/85/+13/0.01/…/.. 28 WSW AERO 25 WSW RMY 25
07/29 90/68/79/+7/0.00/…/.. 23 SSW AERO 25 SSW RMY 24
07/30 88/71/80/+8/0.00/…/.. 29 W AERO 28 W RMY 29
07/31 84/69/77/+5/0.00/…/.. 14 ENE AERO 14 ENE RMY 15
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
08/01 87/66/77/+5/0.00/…/.. 18 S AERO 21 S RMY 19
08/02 85/69/77/+5/0.02/…/.. 36 S AERO 37 S RMY 38
08/03 91/75/83/+11/0.00/…/.. 36 WSW AERO 38 SW RMY 36
08/04 83/71/77/5/0.21/…/.. 67 SSE AERO 71 S RMY 70
08/05 90/68/79/+7/0.00/…/.. 28 SW AERO 30 SW RMY 29
08/06 84/65/75/3/0.00/…/.. 20 W AERO 17 W RMY 19
08/07 79/65/72/0/T/…/.. 16 NE AERO 16 NE RMY N/A
08/08 The low since midnight is 64F, the daily normal low is 63F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 8
HIGH 93F IN 1909,1949
LOW 47F IN 1903
PRECIP 3.08 INCHES IN 1976
PEAK GUST 45 MPH WNW IN 1958
RECORDS FOR AUGUST 9
HIGH 100F IN 1949
LOW 49F IN 1899
PRE 2.65 INS IN 1976
PEAK GUST 90 MPH SW IN 1968
TODAY’S REPORT PREPARED BY: Benjamin Turner
