Tuesday, October 26, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, OCTOBER 26, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0610E
SUNSET: 1645E
WIND AND RAIN INCREASING AS STRONG NOR’EASTER GETS UNDERWAY….
An area of showers moved through the region last night, even
some thunder was involved for the Cape and Islands as well as
portions of the south coast. These showers were moderate to
heavy at times and amounted to 0.89″ of rainfall. The 24 hour
total ending at 7 A.M. was 0.95″.
Since 7 A.M. mainly drizzle and a few light rain showers have
moved through, but only amounting to a trace in the 6 hours
ending 1 P.M.
A strong storm system is gathering steam off the Mid Atlantic
coast this afternoon, with a central pressure already at 984mb
(29.06 in/hg) at 1 P.M. (18z). The pressure has been dropping
fairly rapidly here at Blue Hill today, losing 5 millibars in
the 6 hours between 7 A.M. and 1 P.M.
The wind has been gradually increasing this afternoon with more
frequent gusts exceeding 30mph. We did have an early morning
gust of 39mph, which is the peak for the day thus far. The
average speed for the day so far is around 18mph.
It’s fitting that this strong nor’easter is occurring this week.
The 30th anniversary of the “Perfect Storm” is approaching.
This storm impacted the region over a 4 day span between October
30th and November 2nd, 1991. 5.77″ of rain was measured here
at Blue Hill during the course of the event, with the majority
of that falling on the 31st (3.74″).
This just shows that New England is no stranger to severe coastal
storms during the last week of October!
The high so far today is 61F, 4 degrees above the normal max of
57F. The low since midnight is 53, 13 degrees above the normal low
of 40F.
Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 100ft, light drizzle
Temperature: 56F; Dew Point: 56F; Relative Humidity: 100%
Wind: NE @ 15G23 kts, peak wind NE 35mph at 5:58 A.M.
Sea-level pressure: 1005.6 mb; 29.70 in. Hg: falling, then more slowly
Visibility: 1/16 mile, fog
6-hr Max temp: 56F
6-hr Min temp: 53F
24-hr Precip: 0.95 ins.
BHO SA 1155 X W1 1/16L-F 056/56/56/0415G23/970/ PCPN VRY LGT PK WND 0430/58/
8//// 56022 6050/ 70095 10056 20053
10 A.M.
Weather: Broken stratus fractus, overcast stratus, light rain shower
Temperature: 60F; Dew Point: 59F; Relative Humidity: 97%
Wind: E @ 15G21 kts
Sea-level pressure: 1003.6 mb; 29.64 in Hg; falling, then more rapidly
Visibility: 8 miles, 10 miles ESE-S, 6 miles W-N
3-hr Precip: Trace
BHO SA 1455 E5 BKN 14 OVC 8RW- 036/60/59/0915G21/964/ RW-B03E07B55
PCPN VRY LGT VSBY 10 ESE-S 6 W-N/ 8/6// 58020 6000/
1 P.M.
Weather: Broken stratus fractus, overcast stratus, light rain shower
Temperature: 58F, Dew point: 56F; Relative Humidity: 93%
Wind: ENE @ 20G28 kts, peak wind ENE 34mph at 12:17 P.M.
Sea-level pressure: 1000.6 mb; 29.55 in Hg; falling, then more slowly
Visibility: 8 miles, thin fog
6-hr Max temp: 61F
6-hr Min temp: 56F
6-hr Precip: Trace
BHO SA 1755 E12 BKN 60 OVC 8RW- 006/58/56/0720G28/955/ THN F ALQDS
PK WND 0729/17/ 8/6// 56030 6000/ 10061 20056
SUMMARY FOR MONDAY, OCTOBER 25, 2021
TEMPERATURE (DEGREES F)
MAX…….56 NORMAL…..58
MIN…….47 NORMAL…..41
MEAN……52 NORMAL…..49
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………… +3
TOTAL DEPARTURE FOR THE MONTH……………………..+126 [+4.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………13 DEPARTURE……..-3
TOTAL HEATING UNITS FOR THE MONTH…………..162 DEPARTURE……-130
TOTAL HEATING UNITS FOR THE SEASON………….236 DEPARTURE……-174
TOTAL HEATING UNITS LAST SEASON TO DATE……..314 DEPARTURE…….-78
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……………….29 NE @ 1:52 P.M.
AEROVANE (south tower)…..30 NE @ 3:34 P.M.
VECTOR #2 (south tower)….32 @ 1:52 P.M.
DAVIS #2 (south tower)…..28 ENE @ 11:35 P.M.
RMY #2 (south tower)…….32 NE @ 11:47 P.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………………22 NE @ 10:06 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 @ 10:15 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 NE @ 10:16 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 NE @ 10:15 P.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…….12.6 NE [302 total miles]
VECTOR #2……………..13.0
DAVIS #2………………13.0 ENE
RMY #2………………..12.8 NE
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…….0.95 DEPARTURE….+0.76
TOTAL PRECIPITATION FOR THE MONTH………….3.78 DEPARTURE….-0.63
TOTAL PRECIPITATION FOR THE YEAR………….50.76 DEPARTURE….+7.94
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 The low since midnight is 53F, the daily normal low is 40F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 26
HIGH 80F IN 1963
LOW 24F IN 1921,1933
PRECIP 1.57 INCHES IN 1898
SNOW 3.0 INCHES IN 1962
WIND 59 MPH SSE IN 1967
RECORDS FOR OCTOBER 27
HIGH 83F IN 1963
LOW 21F IN 1936
PRECIP 2.08 INCHES IN 2018
SNOW 2.5 INCHES IN 2011
WIND 54 MPH WNW IN 1968, 54 NE IN 2018
TODAY’S REPORT PREPARED BY: Matt Douglas
