Wednesday, October 5, 2022

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

WEDNESDAY, OCTOBER 5, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0546E
SUNSET:  1719E

DECENT SLUG OF RAIN OVERNIGHT, STILL DREARY AND COOL TODAY….

Periods of rain moved through the region overnight into this
morning. 1.06″ of rain was measured here on the hill through
the 7 A.M. observation this morning. Light rain and drizzle
has continued since with an additional 0.07″ falling through
the 1 P.M. observation.

Today is yet another day without any sunshine. As a matter of
fact we’ve only seen a total of 91 minutes of sunshine so far
for October! This will finally change starting tomorrow!

Temperatures have been holding in the low/mid 50s once again
thanks to the clouds and drizzle.

The wind is not as strong today as the past few days. The
average speed for the day so far is around 14mph. The peak
gust was early this morning registering at 32mph!

Visibility has of course been limited all day so far due to
being in the clouds, generally a 1/2 mile or less.

The high so far today is 55F, which is 10 degrees below the
normal maximum of 65F. The low since midnight is 52F, which is
4 degrees above the normal minimum of 48F.

————————————————————–

PRELIMINARY STATS FOR SEPTEMBER 2022

TEMPERATURE, Deg. F
Avg. Max. 71.8 [-0.9] Avg. Min. 54.4 [-1.2] Mean      63.1 [-1.1] 24-hour corrected mean: 62.5
Max. for month: 86F on the 4th
Min. for month: 42F on the 24th

HEATING DEGREE DAYS
Total heating units:     99 [-1] Total for the season:    99 [-19] Total for last season:   74

COOLING DEGREE DAYS
Total cooling units:     48 [-26] Total for the season:   884 [+215] Total for last season:  714

PRECIPITATION, Inches
Total: 4.41 [+0.35] Greatest in 24 hrs: 1.72 inches on the 5th-6th

WIND, mph
Avg. uncorrected wind speed:  9.6 mph
Avg. corrected wind speed:   10.3 mph
Prevailing wind direction:    W [10%] Peak gust and direction:  48 NW on the 23rd

SUNSHINE:
Campbell-Stokes card minutes: 12030 of a possible 51582, or 56%
Astronomical total minutes: 12496 of a possible 22443, or 56%

————————————————————–

Today’s Observations:

7 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain
Temperature: 52F; Dew Point: 52F; Relative Humidity: 100%
Wind: NNE @ 17G27 kts, peak wind NNE 31mph at 6:54 A.M.
Sea-level pressure: 1014.3 mb; 29.95 in. Hg: rising, then falling
Visibility: 1/4 mile, fog
6-hr Max temp: 53F
6-hr Min temp: 52F
24-hr Precip: 1.06 inches
BHO SA 1155 X W2 1/4R-F 143/52/52/0217G27/995/ PK WND 0227/54/
8//// 58002 6040/ 70106 10053 20052

10 A.M.
Weather: Sky obscured, vertical visibility 200ft, drizzle
Temperature: 54F; Dew Point: 54F; Relative Humidity: 100%
Wind: NNE @ 12G21 kts
Sea-level pressure: 1014.9 mb; 29.97 in Hg: rising, then falling
Visibility: 1/8 mile, fog
3-hr Precip: 0.06 ins.
BHO SA 1455 X W2 1/8LF 149/54/54/0312G21/997/ 8//// 50006 6006/

1 P.M.
Weather: Sky obscured, vertical visibility 300ft
Temperature: 55F, Dew point: 55F; Relative Humidity: 100%
Wind: NNE @ 13G24 kts
Sea-level pressure: 1012.8 mb; 29.91 in Hg: falling, then more rapidly
Visibility: 1/2 mile, fog
6-hr Max temp: 55F
6-hr Min temp: 52F
6-hr Precip: 0.07 ins.
BHO SA 1755 X W3 1/2F 128/55/55/0313G24/991/ L-E45/ 8//// 58021
6007/ 10055 20052

————————————————————–

SUMMARY FOR TUESDAY, OCTOBER 4, 2022

TEMPERATURE (DEGREES F)
MAX…….56   NORMAL…..66
MIN…….49   NORMAL…..49
MEAN……53   NORMAL…..57

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-4
TOTAL DEPARTURE FOR THE MONTH…………………-22 [-5.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………12  DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH……………52  DEPARTURE…….+20
TOTAL HEATING UNITS FOR THE SEASON………….151  DEPARTURE……..+1
TOTAL HEATING UNITS LAST SEASON TO DATE……..105  DEPARTURE…….+46

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH…………….0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE SEASON………….884  DEPARTURE……+211
TOTAL COOLING UNITS LAST SEASON TO DATE……..714  DEPARTURE……+170

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….39 ENE @ 11:26 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..42     @ 11:26 A.M.
DAVIS #2 ………………34 ENE @ 11:26 A.M.
RMY #2 (Instantaneous)…..38 ENE @ 11:26 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………………25 NE  @  9:45 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24     @ 12:09 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 NE  @ 12:90 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 NE  @ 12:09 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…….16.0 NE [385 total miles] VECTOR #2……………..16.0
DAVIS #2………………16.1 ENE
RMY #2………………..15.5 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……..1.06 DEPARTURE…..+0.90
TOTAL PRECIPITATION FOR THE MONTH…………..1.08 DEPARTURE…..+0.42
TOTAL PRECIPITATION FOR THE YEAR…………..29.07 DEPARTURE….-10.26

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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

9/1   78/59/69/0/0.00/757/96            36 WNW  AERO N/A    RMY 37
9/2   73/53/63/-6/0.00/762/97           19 N    AERO N/A    RMY 19
9/3   80/59/70/+2/0.00/673/86           23 S    AERO N/A    RMY 24
9/4   86/61/74/+6/0.00/554/71           20 SSW  AERO N/A    RMY 20
9/5   75/60/68/0/0.83/000/00            20 E    AERO N/A    RMY 19
9/6   63/60/62/-6/1.57/000/00           27 NE   AERO N/A    RMY 26
9/7   70/57/64/-3/T/309/40              22 NE   AERO N/A    RMY 21
9/8   71/56/64/-3/0.01/684/89           20 ENE  AERO N/A    RMY 20
9/9   77/55/66/-1/0.00/513/67           19 WNW  AERO N/A    RMY 19
9/10  85/61/73/+7/0.00/657/86           22 NW   AERO N/A    RMY 21
9/11  76/62/69/+3/0.06/015/02           22 WSW  AERO N/A    RMY 23
9/12  74/62/68/+2/0.04/121/16           14 WSW  AERO N/A    RMY 15
9/13  74/66/70/+5/0.28/015/02           22 W    AERO N/A    RMY 22
9/14  78/56/67/+2/0.00/663/88           29 WNW  AERO N/A    RMY 29
9/15  70/52/61/-4/0.00/713/95           33 NW   AERO N/A    RMY 33
9/16  70/47/59/-5/0.00/568/76           24 NNW  AERO N/A    RMY 24
9/17  70/47/59/-5/0.00/684/92           24 SSW  AERO N/A    RMY 24
9/18  81/57/69/+6/0.04/542/73           28 WSW  AERO N/A    RMY 29
9/19  66/56/61/-2/0.22/000/00           22 SW   AERO N/A    RMY 22 TSTM
9/20  63/56/60/-3/0.05/000/00           19 NW   AERO N/A    RMY 19
9/21  68/54/61/-1/0.03/190/26           27 SSW  AERO N/A    RMY 28
9/22  68/50/59/-3/1.07/000/00           36 NW   AERO N/A    RMY 37 TSTM
9/23  59/45/52/-10/0.00/705/97          48 NNW  AERO N/A    RMY 48
9/24  68/42/55/-6/0.00/681/94           37 NW   AERO N/A    RMY 39
9/25  69/50/60/-1/0.01/144/20           28 S    AERO N/A    RMY 28
9/26  73/56/65/+5/0.20/531/74           35 SSW  AERO N/A    RMY 37
9/27  73/53/63/+3/0.00/551/77           33 SW   AERO N/A    RMY 33
9/28  70/50/60/+1/0.00/606/85           22 W    AERO N/A    RMY 23
9/29  65/47/56/-3/0.00/497/70           23 NNW  AERO N/A    RMY 22
9/30  60/44/52/-7/0.00/361/51           17 ENE  AERO N/A    RMY 18

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

10/1  56/48/52/-6/0.02/000/00           26 NE   AERO N/A    RMY 27
10/2  55/48/52/-6/0.00/077/11           53 ENE  AERO N/A    RMY 55
10/3  54/48/51/-6/0.00/014/02           41 ENE  AERO N/A    RMY 41
10/4  56/49/53/-4/0.62/000/00           39 ENE  AERO N/A    RMY 38

10/5  The low since midnight is 52F, the daily normal low is 48F

DAILY RECORDS

10/02/2022: NEW PEAK WIND GUST RECORD OF 53 MPH ENE,
PREVIOUS RECORD WAS 52e MPH S IN 1952 AND
52 MPH NNW IN 1984.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR OCTOBER 5
HIGH 86F IN 2007
LOW 29F IN 1965
PRECIP 3.17 INCHES IN 1962
PEAK GUST 64e MPH S IN 1979

RECORDS FOR OCTOBER 6
HIGH 83F IN 1990, 2007
LOW 26F IN 1965
PRECIP 3.78 INCHES IN 1962
PEAK GUST 60e MPH S IN 1942

TODAY’S REPORT PREPARED BY: Matt Douglas