Thursday, October 28, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, OCTOBER 28, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0613E
SUNSET: 1642E
COOL AND CLOUDY AFTER SOME OVERNIGHT RAIN AND RECORD-BREAKING
WIND….
Today was overcast and cool with perfect visibility at the 7 A.M.
observation. Visibility was great today with 80 miles being seen
on average. Wind was northerly with an average speed of 10 mph and
a max gust so far of 25 mph.
Event total precipitation for the October Nor’Easter came to 2.38 inches.
We broke a wind record with this storm:
Peak gust of 66 NNE on the 27th, beating the old record of
54 WNW, NE set in 1968 and 2018.
Conditions have remained abnormally cool throughout the course of the
day, with temperatures hanging in the mid 40’s.
The high so far today is 48F, 9 degrees below the normal max of
57F. The low since midnight is 42F, 2 degrees above the normal low
of 40F.
Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus, break in overcast along
horizon S-W-N-NE
Temperature: 42F; Dew Point: 40F; Relative Humidity: 85%
Wind: N @ 9G16 kts
Sea-level pressure: 1014.5 mb; 29.96 in. Hg: rising unsteadily
Visibility: 90 miles, except 40 miles NE-SE
6-hr Max temp: 43F
6-hr Min temp: 42F
24-hr Precip: 0.37 ins.
BHO SA 1155 15 BKN 45 BKN 90 145/42/40/3509G16/996/ BINOVC ALG HRZN
S-W-N-NE VSBY 40 NE-SE/ 8/800 52015 70037 10043 20042
10 A.M.
Weather: Overcast stratocumulus
Temperature: 44F; Dew Point: 42F; Relative Humidity: 82%
Wind: N @ 10G17 kts
Sea-level pressure: 1015.8 mb; 30.00 in Hg; rising, then steady
Visibility: 70 miles, except 20 miles N-E
3-hr Precip: 0.00 ins.
BHO SA 1455 24 OVC 70 158/44/42/36010G17/000/ VSBY 20 N-E/ 8/6// 51013
1 P.M.
Weather: Overcast stratus
Temperature: 46F, Dew point: 41F; Relative Humidity: 79%
Wind: N @ 7G17 kts
Sea-level pressure: 1015.1 mb; 29.98 in Hg; rising then falling
Visibility: 80 miles
6-hr Max temp: 48F
6-hr Min temp: 42F
6-hr Precip: 0.00 ins.
BHO SA 1755 25 OVC 80 151/46/41/36007G17/998/ 8/6// 55007 10048 20042
SUMMARY FOR WEDNESDAY, OCTOBER 27, 2021
TEMPERATURE (DEGREES F)
MAX…….48 NORMAL…..57
MIN…….42 NORMAL…..40
MEAN……46 NORMAL…..49
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………… -3
TOTAL DEPARTURE FOR THE MONTH……………………..+128 [+4.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………19 DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE MONTH…………..192 DEPARTURE……-133
TOTAL HEATING UNITS FOR THE SEASON………….266 DEPARTURE……-176
TOTAL HEATING UNITS LAST SEASON TO DATE……..348 DEPARTURE…….-82
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……………….66 NNE @ 5:04 A.M.
AEROVANE (south tower)…..74 NNE @ 4:40 A.M.
VECTOR #2 (south tower)….79 @ 5:04 A.M.
DAVIS #2 (south tower)…..62 NE @ 5:04 A.M.
RMY #2 (south tower)…….76 NNE @ 4:40 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………………37 NNE @ 4:49 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..39 @ 4:48 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………39 NE @ 4:48 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..38 NE @ 4:48 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…….21.5 N [515 total miles]
VECTOR #2……………..21.2
DAVIS #2………………20.8 NE
RMY #2………………..20.4 NNE
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…….0.37 DEPARTURE….+0.19
TOTAL PRECIPITATION FOR THE MONTH………….6.16 DEPARTURE….+1.39
TOTAL PRECIPITATION FOR THE YEAR………….53.14 DEPARTURE….+9.96
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 The low since midnight is 42F, the daily normal low is 40F
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 28
HIGH 81F IN 1919
LOW 23F IN 1914
PRECIP 2.46 INCHES IN 2006
SNOWFALL TRACE IN 1891,1934,1957,1979
PEAK GUST 71 MPH SSW IN 1995
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
TODAY’S REPORT PREPARED BY: Augustin Busschaert / Benjamin Turner
