Wednesday, October 27, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, OCTOBER 27, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0612E
SUNSET: 1644E
WINDY AND RAINY FOLLOWING THE PASSAGE OF THE NOR’EASTER….
Today we observed a maximum visibility of 2 miles and frequent wind
gusts at or around 40 mph from the northeast. The max gust seen during
this event was 66 mph earlier this morning. Event total precipitation
is 2.19 inches at the 1 P.M. observation.
Pressure is rising rapidly, with an increase of over 10 millibars
since this morning.
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 45F, 5 degrees above the normal low
of 40F. Not much in the way of temperature variation!
Today’s Observations:
7 A.M.
Weather: Overcast stratus, light rain ending around 6:15 A.M.
Temperature: 47F; Dew Point: 47F; Relative Humidity: 100%
Wind: NE @ 27G48 kts, peak wind NNE 66 mph at 6:24 A.M.
Sea-level pressure: 998.8 mb; 29.49 in. Hg: rising, then more rapidly
Visibility: 1 mile, fog
6-hr Max temp: 48F
6-hr Min temp: 47F
24-hr Precip: 2.01 ins.
BHO SA 1155 15 OVC 1R-F 988/47/47/0527G48/949/ R-E15 PK WND 0357/24/
8/6// 53044 70201 10048 20047
10 A.M.
Weather: Overcast stratus, light rain
Temperature: 46F; Dew Point: 46F; Relative Humidity: 100%
Wind: NE @ 17G32 kts, peak of 55 mph at 9:15 A.M.
Sea-level pressure: 1003.4 mb; 29.63 in Hg; rising, then more rapidly
Visibility: 2 miles, fog
3-hr Precip: 0.10 ins.
BHO SA 1455 15 OVC 2R-F 034/46/46/0417G32/963/ R-CTD PK WND 0348/15/
8/6// 6010/ 53046
1 P.M.
Weather: Overcast stratus, drizzle
Temperature: 45F, Dew point: 45F; Relative Humidity: 100%
Wind: NNE @ 17G30 kts, peak wind ENE 41 mph at 12:47 P.M.
Sea-level pressure: 1005.7 mb; 29.70 in Hg; rising, then more rapidly
Visibility: 1 miles, fog
6-hr Max temp: 48F
6-hr Min temp: 45F
6-hr Precip: 0.18 ins.
BHO SA 1755 15 OVC 1LF 057/45/45/0317G30/970/ LCTD PK WND 0236/47/ 8/6//
6018/ 53023 10048 20045
SUMMARY FOR TUESDAY, OCTOBER 26, 2021
TEMPERATURE (DEGREES F)
MAX…….61 NORMAL…..57
MIN…….47 NORMAL…..40
MEAN……54 NORMAL…..49
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………… +5
TOTAL DEPARTURE FOR THE MONTH……………………..+131 [+4.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY……………11 DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE MONTH…………..173 DEPARTURE……-135
TOTAL HEATING UNITS FOR THE SEASON………….247 DEPARTURE……-179
TOTAL HEATING UNITS LAST SEASON TO DATE……..331 DEPARTURE…….-84
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……………….49 NNE @ 9:00 P.M.
AEROVANE (south tower)…..56 N @ 9:00 P.M.
VECTOR #2 (south tower)….60 @ 9:00 P.M.
DAVIS #2 (south tower)…..45 ENE @ 5:22 P.M.
RMY #2 (south tower)…….54 NNE @ 9:00 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………………31 NNE @ 7:32 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..31 @ 7:32 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 NE @ 7:32 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..30 NE @ 7:32 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…….20.2 NNE [484 total miles]
VECTOR #2……………..19.8
DAVIS #2………………19.8 ENE
RMY #2………………..19.3 ENE
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…….2.01 DEPARTURE….+1.83
TOTAL PRECIPITATION FOR THE MONTH………….5.79 DEPARTURE….+1.20
TOTAL PRECIPITATION FOR THE YEAR………….52.77 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 The low since midnight is 47F, 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 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
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
TODAY’S REPORT PREPARED BY: Benjamin Turner
