Friday, October 29, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, OCTOBER 29, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0614E
SUNSET: 1641E
CLOUDY AND COOL THE THEME AGAIN TODAY….
Today is overcast and cool alongside decent visibility. 85 miles
was noted at 7A, then slipping to 65 miles by early afternoon. A
batch of stratocumulus peeled away for a time last night allowing
temperatures to dip into upper-30s before filling right back in before
sunrise. Temps have remained abnormally cool throughout the daytime
hours with the mercury hanging in the mid-40s.
Looking at things in the wind department, the fierce gusts yielded by the
recent “bomb-cyclone” are well past us now. Peak gust thus far today
is 18 MPH from the NNE with an average speed of 10 MPH.
Of interest, the sun has been very hard to come by this week. In fact,
our Campbell-Stokes Sunshine Recorder has yet to detect any sunshine
since last Sunday…5 days ago!
With respect to this coming weekend, guidance is indicating another
soaking rainfall tomorrow (like we need it!). 1-2 (or more) inches
seems likely. However, the responsible low pressure should scoot out by
Saturday night, thus it appears outdoor Halloween plans on Sunday should
not be hindered by significant cold or precipitation. Highs are expected
in the mid-60s before falling back into the 50s during the evening under
some moonlight skies.
The high so far today is 48F, 8 degrees below the normal max of
56F. The low since midnight is 37F, 2 degrees below the normal low
of 39F.
Today’s Observations:
7 A.M.
Weather: Overcast Stratocumulus (breaks in overcast SW-NW)
Temperature: 41F; Dew Point: 36F; Relative Humidity: 83%
Wind: NNE @ 10G14 kts
Sea-level pressure: 1015.7 mb; 29.99 in. Hg: steady, then rising
Visibility: 85 miles
6-hr Max temp: 41F
6-hr Min temp: 37F
24-hr Precip: 0.00 ins.
BHO SA 1155 25 OVC 85 157/41/36/2010G14/999/ FEW BINOVC SW-NW/ 8/5//
53003 10041 20037
10 A.M.
Weather: Overcast Stratus
Temperature: 45F; Dew Point: 43F; Relative Humidity: 92%
Wind: N @ 6 kts (wind light)
Sea-level pressure: 1016.2 mb; 30.01 in Hg; rising insteadily
Visibility: 60 miles (thin fog)
3-hr Precip: 0.00 ins.
BHO SA 1455 25 OVC 60 162/45/43/3506/001/ THN F ALQDS WND LGT/ 8/6// 52005
1 P.M.
Weather: Overcast stratus
Temperature: 47F, Dew point: 42F; Relative Humidity: 83%
Wind: ENE @ 7G15 kts
Sea-level pressure: 1014.6 mb; 29.96 in Hg; falling, then falling more rapidly
Visibility: 65 miles (hazy)
6-hr Max temp: 48F
6-hr Min temp: 41F
6-hr Precip: 0.00 ins.
BHO SA 1755 25 OVC 65 146/47/42/6507G15/996/ HAZY/ 8/6// 58016 10048 20041
SUMMARY FOR THURSDAY, OCTOBER 28, 2021
TEMPERATURE (DEGREES F)
MAX…….48 NORMAL…..57
MIN…….39 NORMAL…..40
MEAN……44 NORMAL…..48
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………… -4
TOTAL DEPARTURE FOR THE MONTH……………………..+124 [+4.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………21 DEPARTURE……..+4
TOTAL HEATING UNITS FOR THE MONTH…………..213 DEPARTURE……-128
TOTAL HEATING UNITS FOR THE SEASON………….287 DEPARTURE……-172
TOTAL HEATING UNITS LAST SEASON TO DATE……..367 DEPARTURE…….-80
COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….3 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE SEASON………….717 DEPARTURE…….+40
TOTAL COOLING UNITS LAST SEASON TO DATE……..831 DEPARTURE……-114
PEAK WIND GUST (MPH):
Official……………….26 NNE @ 1:22 A.M.
AEROVANE (south tower)…..26 NNE @ 4:08 A.M.
VECTOR #2 (south tower)….29 @ 4:44 A.M.
DAVIS #2 (south tower)…..25 NE @ 4:10 A.M.
RMY #2 (south tower)…….28 NNE @ 4:44 A.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 NNE @ 4:12 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 4:08 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 NNE @ 4:08 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 NNE @ 4:08 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE…….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE…..OUT OF SERVICE D/T RENOVATIONS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….9.8 N [234 total miles]
VECTOR #2……………..10.4
DAVIS #2………………10.0 NNE
RMY #2………………..10.1 N
RMY #1…………..OUT OF SERVICE D/T RENOVATIONS
ASOS…………….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1………..OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…………OUT OF SERVICE D/T RENOVATIONS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00 DEPARTURE….-0.19
TOTAL PRECIPITATION FOR THE MONTH………….6.16 DEPARTURE….+1.20
TOTAL PRECIPITATION FOR THE YEAR………….53.14 DEPARTURE….+9.77
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 64/44/54/-4/0.00/583/83 20 WNW AERO 20 WNW RMY N/A
10/02 73/47/60/+2/0.00/567/81 24 WSW AERO 23 WSW RMY N/A
10/03 65/55/60/+3/0.09/070/10 19 E AERO 19 E RMY N/A
10/04 59/51/55/-2/1.69/000/00 30 E AERO 30 E RMY N/A
10/05 58/50/54/-3/0.30/000/00 22 NNE AERO 23 NE RMY N/A
10/06 69/50/60/+4/0.00/407/59 15 N AERO 16 N RMY N/A
10/07 73/55/64/+8/0.00/550/80 15 WSW AERO 15 W RMY N/A
10/08 69/55/62/+7/T/616/90 24 ENE AERO 23 ENE RMY N/A
10/09 62/54/58/+3/0.01/273/40 23 E AERO 23 E RMY N/A
10/10 62/54/58/+3/T/000/00 22 E AERO 21 E RMY N/A
10/11 67/56/62/+8/0.01/…/.. 20 NE AERO 21 NE RMY N/A
10/12 72/54/63/+9/0.00/…/.. 15 SW AERO 15 SW RMY N/A
10/13 75/55/65/+11/0.00/…/.. 18 SW AERO 18 SW RMY N/A
10/14 73/56/65/+12/0.00/…/.. 19 N AERO 20 N RMY N/A
10/15 74/55/67/+14/0.00/…/.. 24 S AERO 24 SSW RMY N/A
10/16 73/59/66/+14/0.06/…/.. 43 S AERO 50 S RMY 44
10/17 62/47/55/+3/0.25/…/.. 32 WNW AERO 31 WNW RMY 31
10/18 60/42/51/-1/0.01/…/.. 31 NW AERO 32 NW RMY 33
10/19 59/40/50/-1/0.00/…/.. 35 WNW AERO 37 W RMY 38
10/20 70/49/60/+9/0.00/…/.. 23 W AERO 23 W RMY 23
10/21 74/56/65/+14/0.00/…/.. 30 SSW AERO 32 S RMY 32
10/22 71/51/61/+11/0.00/…/.. 27 S AERO 30 S RMY 29
10/23 60/44/52/+2/0.00/…/.. 24 NW AERO 22 NW RMY 24
10/24 57/37/47/-3/0.01/…/.. 25 NNW AERO 25 NNW RMY 25
10/25 56/47/52/+3/0.63/…/.. 29 NE AERO 30 NE RMY 32
10/26 61/47/54/+5/…./…/.. 49 NNE AERO 56 N RMY 54
10/27 48/44/46/-3/…./…/.. 66 NNE AERO 74 NNE RMY 65
10/28 48/39/44/-4/0.00/…/.. 26 NNE AERO 26 NNE RMY 28
10/29 The low since midnight is 37F, the daily normal low is 39F
RECORDS FOR THE MONTH:
Peak gust of 66 NNE on the 27th, beating the old record of
54 WNW, NE set in 1968 and 2018.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 29
HIGH 74F IN 1989
LOW 23F IN 1891
PRECIP 2.42 INCHES IN 2012
SNOWFALL 4.0 INCHES IN 2011
PEAK GUST 76 E IN 2012
RECORDS FOR OCTOBER 30
HIGH 75F IN 1946,1989
LOW 21F IN 1928
PRECIP 1.85 INCHES IN 1917
SNOWFALL 6.5 INCHES IN 2020
PEAK GUST 73 SE IN 2017
TODAY’S REPORT PREPARED BY: Andrew Swanson
