Tuesday, October 11, 2022

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

TUESDAY, OCTOBER 11, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0553E
SUNSET:  1709E

A NICE FALL DAY WITH GOOD VISIBILITY AND A COOL
NORTHWESTERLY BREEZE….

We observed a visibility of 75 miles today, as dew
points dropped into the mid 30’s.

Today felt cooler than the day before thanks to a
cool and consistent northerly breeze.

Today is almost clear, touting cool and sunny conditions
as we enjoy the first consistent fall in years.

The low since midnight is 45F, a degree below the normal low.
The high so far today is 65F, which is 2 degrees above the
normal maximum of 63F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few small cumulus
Temperature: 46F; Dew Point: 46F; Relative Humidity: 99%
Wind: N @ 5 kts, wind light
Sea-level pressure: 1026.3 mb; 30.31 in. Hg: rising steadily
Visibility: 70 miles, thin smoke layer
6-hr Max temp: 50F
6-hr Min temp: 45F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 70 263/46/46/3605/031/ FEW SML CU ALQDS THN
K LYR ALQDS WND LGT/ 8/100 52012 10050 20045

10 A.M.
Weather: Scattered cirrus, few small cumulus
Temperature: 59F; Dew Point: 44F; Relative Humidity: 56%
Wind: WNW @ 8 kts
Sea-level pressure: 1026.8 mb; 30.32 in Hg: rising then falling
Visibility: 70 miles, thin smoke layer
3-hr Precip: 0.00 ins.
BHO SA 1455 250 SCT 70 268/59/44/3008/032/ FEW SML CU ALQDS THN
K LYR ALQDS/ 8/102 50005

1 P.M.
Weather: Clear, few small cumulus and few thin cirrus
Temperature: 64F, Dew point: 34F; Relative Humidity: 32%
Wind: NW @ 9G14 kts
Sea-level pressure: 1024.9 mb; 30.26 in Hg: falling, then more rapidly
Visibility: 75 miles
6-hr Max temp: 65F
6-hr Min temp: 46F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 75 249/64/34/3109G14/026/ FEW SML CU ALQDS FEW
THN CI ALQDS/ 8/101 58019 10065 20046

————————————————————–

SUMMARY FOR MONDAY, OCTOBER 10, 2022

TEMPERATURE (DEGREES F)
MAX…….65   NORMAL…..63
MIN…….45   NORMAL…..46
MEAN……55   NORMAL…..55

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..0
TOTAL DEPARTURE FOR THE MONTH………………….-19 [-2.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………10  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………..105  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE SEASON………….204  DEPARTURE……..-4
TOTAL HEATING UNITS LAST SEASON TO DATE……..139  DEPARTURE…….+64

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….0  DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE SEASON………….884  DEPARTURE……+210
TOTAL COOLING UNITS LAST SEASON TO DATE……..714  DEPARTURE……+170

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….24 SW  @ 11:51 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..25     @ 11:51 A.M.
DAVIS #2 ………………24 W   @  2:27 P.M.
RMY #2 (Instantaneous)…..24 SW  @ 11:51 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………………18 WSW @  2:48 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18     @  2:20 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 SW  @  2:20 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 WSW @  2:20 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…….7.8 W [187 total miles] VECTOR #2……………..8.4
DAVIS #2………………8.2 SSW
RMY #2………………..7.9 SSW
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…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..1.80 DEPARTURE…..+0.12
TOTAL PRECIPITATION FOR THE YEAR…………..29.79 DEPARTURE….-10.56

————————————————————–

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  56/52/54/-3/1.09/000/00           32 NNE  AERO N/A    RMY 32
10/6  72/56/64/+8/0.05/…/..           23 N    AERO N/A    RMY 23
10/7  77/52/65/+9/0.00/…/..           31 NW   AERO N/A    RMY 31
10/8  59/40/50/-5/0.02/…/..           23 NW   AERO N/A    RMY 23
10/9  61/36/49/-6/0.00/…/..           30 W    AERO N/A    RMY 30
10/10 65/45/55/0/0.00/…/..            24 SW   AERO N/A    RMY 24

10/11 The low since midnight is 45F, the daily normal low is 46F

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 11
HIGH 80F IN 1919,1949
LOW 28F IN 1993
PRECIP 1.36 INCHES IN 2019
SNOWFALL (NONE)
PEAK GUST 66e MPH WNW IN 1941

RECORDS FOR OCTOBER 12
HIGH 87F IN 1954
LOW 31F IN 1906
PRECIP 1.70 INCHES IN 1948
SNOWFALL TRACE IN 1904, 1941
PEAK GUST 55 MPH NW IN 1963

TODAY’S REPORT PREPARED BY: Benjamin Turner