Friday, November 6, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, NOVEMBER 6, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
CLOUDY START BREAKS FOR WARM SUNSHINE…
With a low temperature of just 55 degrees, it was off
to the races! Considerable cloudiness during the morning
prevented any rapid warming initially. However, around
late morning clouds eroded leading to sunny skies. Temperatures
responded sending the high so far to 71 degrees with more
warming likely! This ties the record high for the date –
which was seen in 1959 and in 2015. Latest guidance indicates
we will remain well above average through at least most of
the next work week.
We’ve also noted that dew points have been anomalously
high for this time of year. Dew points peaked yesterday in
the mid-50s! Today, a bit closer to normal – it has slipped
from the upper-40s to the low-40s.
Visibility has been very limited all day. Max distance so far
is 45 miles thanks to a good deal of haze. Winds have eased
from yesterday’s peak of 37 MPH and average speed of 18.2 MPH.
That mean speed indicates 437 miles of air passed over the
observatory from the SW! Today’s peak is 25 MPH with an
average of 12.1 MPH.
The high so far today is 71F, which is 18 degrees above the
daily normal maximum of 53F! The low since midnight is 55F,
which is 19 degrees above the daily normal minimum of 36F.
Today’s Observations:
7 A.M.
Weather: Broken Altostratus, (thin) Overcast Cirrus and Cirrostratus
(lone patch of cumulus SW-W; sun dimly visible)
Temperature: 55F; Dew Point: 49F; Relative Humidity: 80%
Wind: SSW at 13G18 kts
Sea-level pressure: 30.26 ins. Hg: falling unsteadily
Visibility: 35 miles (hazy)
6-hr Max temp: 57F
6-hr Min temp: 55F
24-hr Precip: 0.0
24-hr Snow: 0.0
Snow Depth: 0 ins.
BHO SA 1155 E200 BKN E250 -OVC 35 246/55/49/2113G18/026/
LONE PTCH CU SW-W SUN DMLY VSB HAZY/ 8/126 57005 10057 20055
10 A.M.
Weather: Scattered Altocumulus; (thin) Broken Cirrus and Cirrostratus
(clearing distant SW-NNW)
Temperature: 61F; Dew Point: 48F; Relative Humidity: 61%
Wind: SW at 11G18 kts
Sea-level pressure: 30.24 ins. Hg: steady, then falling
Visibility: 45 miles (hazy)
3-hr Precip: 0.00 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 160 SCT E250 BKN 45 239/61/48/2211G18/024/
CLRNG DSNT SW-NNW HAZY/ 8/026 58005
1 P.M.
Weather: Scattered Cirrus and Cirrostratus (clear skies SW-E)
Temperature: 70F; Dew Point: 42F; Relative Humidity: 36%
Wind: SW at 14G22
Sea-level pressure: 30.15 ins. Hg: falling, then falling more rapidly
Visibility: 45 miles (hazy)
6-hr Max temp: 71F
6-hr Min temp: 55F
6-hr Precip: 0.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E250 -SCT 45 210/70/42/2314G22/015/
CLR SKY SW-E HAZY/ 8/006 58024 10071 20055
SUMMARY FOR THURSDAY, NOVEMBER 5, 2020
TEMPERATURE (DEGREES F)
MAX…….69 NORMAL…..54
MIN…….49 NORMAL…..37
MEAN……59 NORMAL…..45
DEPARTURE FROM 30-YEAR NORMAL……………….+14
TOTAL DEPARTURE FOR THE MONTH……………….-12 [-2.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………….6 DEPARTURE……-14
TOTAL HEATING UNITS FOR THE MONTH…………..109 DEPARTURE……+13
TOTAL HEATING UNITS FOR THE SEASON………….561 DEPARTURE……-99
TOTAL HEATING UNITS LAST SEASON TO DATE……..537 DEPARTURE……+24
PEAK WIND GUST FOR YESTERDAY (MPH):
420C/Official…………..37 SSW AT 3:24 P.M.
AEROVANE (south tower)…..40 SSW AT 3:34 P.M.
ASOS…………………..37 SSW AT 3:25 P.M.
DAVIS #1……………….38 SW AT 3:13 P.M.
DAVIS #2 (south tower)…..37 WSW AT 1:12 P.M.
MERLIN…………………37
RMY……………………38
VECTOR…………………41
FASTEST MILE FOR YESTERDAY:
CONTACTING/OFFICIAL………………………..29 SSW AT 3:24 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….25 SSW AT 3:29 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………27 SW AT 2:51 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 SSW AT 3:24 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL… …18.2 SSW [437 total miles]
DAVIS #1………………17.4 SW [417 total miles]
DAVIS #2 (south tower)….18.5 SW [444 total miles]
ASOS………………….18.5 [444 total miles]
VECTOR………………..18.3 [439 total miles]
MERLIN………………..15.7 [377 total miles]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00 DEPARTURE….-0.15
ASOS………….0.00
TOTAL PRECIPITATION FOR THE MONTH………….0.69 DEPARTURE….-0.09
ASOS………….0.71
TOTAL PRECIPITATION FOR THE YEAR………….41.86 DEPARTURE….-2.69
ASOS………..42.66
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M………..0.0 DEPARTURE….. 0.0
TOTAL SNOWFALL FOR THE MONTH……………..Trace DEPARTURE…..-0.2
TOTAL SNOWFALL FOR THE SEASON………………6.5 DEPARTURE…..+6.0
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
10/01 75/56/66/+9/0.00/591/84 28 SW AERO 28 SW RMY N/A
10/02 63/49/56/-1/0.02/203/29 20 NW AERO 21 NW RMY 20
10/03 65/45/55/-1/0.00/676/97 19 WNW AERO 19 WNW RMY 19
10/04 65/45/55/-1/0.00/659/95 17 ESE AERO 18 ESE RMY 18
10/05 62/52/57/+1/0.00/277/40 17 ENE AERO 17 ENE RMY N/A
10/06 69/51/60/+5/0.00/503/73 28 S AERO 28 S RMY 29
10/07 73/50/62/+7/0.14/316/46 76 W AERO 74 W RMY 70 TSTM
10/08 61/42/52/-2/0.00/676/99 41 W AERO 41 W RMY N/A
10/09 60/37/49/-5/0.00/646/95 25 SSW AERO 28 SSW RMY N/A
10/10 75/52/64/+10/0.00/549/81 40 SSW AERO 40 SSW RMY 38
10/11 64/47/56/+3/0.00/574/85 32 NNW AERO 35 NNW RMY N/A
10/12 52/48/50/-3/T/000/00 28 E AERO 27 E RMY N/A
10/13 57/49/53/0/1.74/000/00 32 E AERO 33 E RMY N/A
10/14 67/47/57/+5/0.00/606/91 23 WNW AERO 25 WNW RMY N/A
10/15 71/50/61/+9/0.00/511/77 43 S AERO 46 S RMY 42
10/16 68/48/58/+7/1.00/020/03 28 S AERO 30 S RMY N/A
10/17 56/39/48/-3/1.24/480/73 35 WNW AERO 40 WNW RMY 37
10/18 60/46/53/+2/0.00/622/95 20 ESE AERO 21 ESE RMY 20
10/19 61/46/54/+4/0.00/575/88 16 ESE AERO 16 SSE RMY N/A
10/20 66/49/58/+8/0.00/065/10 22 S AERO 22 S RMY 22
10/21 71/56/64/+14/0.06/000/00 26 SSW AERO 26 SSW RMY 26
10/22 70/54/62/+13/0.00/471/73 18 SSW AERO 17 SSW RMY N/A
10/23 68/52/60/+11/0.00/340/53 18 ESE AERO 18 ESE RMY 18
10/24 68/42/55/+6/0.00/217/34 32 NNW AERO 32 NNW RMY 32
10/25 50/40/45/-4/0.00/134/21 19 NNW AERO 19 NNW RMY N/A
10/26 52/43/48/0/0.02/000/00 20 E AERO 18 ESE RMY 20
10/27 52/43/48/0/T/…/.. 22 NNW AERO 22 NNW RMY N/A
10/28 49/42/46/-2/0.33/…/.. 18 W AERO 18 W RMY 18
10/29 46/41/44/-3/1.26/…/.. 39 NE AERO 38 NE RMY 38
10/30 41/26/34/-13/0.94/…/.. 37 NNE AERO 44 NNE RMY N/A
10/31 39/24/32/-15/0.00/…/.. 18 SSE AERO 20 SSE RMY 17
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
11/01 49/36/43/-3/0.69/0.0/…/.. 38 W AERO 40 W RMY 39
11/02 40/31/36/-10/T/T/…/.. 61 WNW AERO 62 WNW RMY 62
11/03 43/29/36/-10/0.00/0.0/…/.. 48 WNW AERO 53 WNW RMY 48
11/04 54/30/42/-3/0.00/0.0/…/.. 30 SSW AERO 30 SSW RMY 30
11/05 69/49/59/+14/0.00/0.0/…/.. 37 SSW AERO 40 SSW RMY 38
11/06 The low since midnight is 55F, the daily normal low is 36F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR NOVEMBER 6
HIGH 71 IN 1959, 2015
LOW 22 IN 1951
PRECIP 1.72 INCHES IN 1907
SNOWFALL 8.0 IN 1894
PEAK GUST 63 W IN 1973
RECORDS FOR NOVEMBER 7
HIGH 75 IN 1938
LOW 21 IN 1930
PRECIP 2.02 INCHES IN 1953
SNOWFALL 3.5 IN 2012
PEAK GUST 69e ENE IN 1953
TODAY’S REPORT PREPARED BY: Andrew Swanson
