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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, OCTOBER 20, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0603E
SUNSET: 1654E
ANOTHER COOL AND DRY AUTUMN DAY….
Today was cool and dry with wind picking up in the
afternoon hours. The average wind speed was 15 mph with
frequent gusts above 20 mph; from the southwest.
Visibility was great at 80 miles, and clouds were
few; consisting of small cumulus and cirrus clouds.
Weather conditions were fair and dry, with the dew point
dropping to the upper 20’s. Another gorgeous day for hiking!
The high so far today is 58F, which is 2 degrees below the
normal maximum of 60F. The low since midnight is 39F,
which is 3 degrees below the normal low of 42F.
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Today’s Observations:
7 A.M.
Weather: Few small cumulus NE-E-S, few thin cirrus
Temperature: 40F; Dew Point: 34F; Relative Humidity: 77%
Wind: WSW @ 13G18 kts
Sea-level pressure: 1014.3 mb; 29.95 in. Hg: rising, then more
rapidly
Visibility: 75 miles
6-hr Max temp: 42F
6-hr Min temp: 39F
24-hr Precip: 0.00 ins.
BHO SA 1155 CLR 75 143/40/34/2513G18/995/ FEW SML CU NE-E-S
FEW THN CI ALQDS/ 8/101 53013 10042 20039
10 A.M.
Weather: Few small cumulus
Temperature: 50F; Dew Point: 33F; Relative Humidity: 51%
Wind: SW @ 14G20 kts
Sea-level pressure: 1014.9 mb; 29.97 in Hg: rising then falling
Visibility: 75 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 75 149/50/33/2314G20/997/ FEW SML CU ALQDS/
8/100 50006
1 P.M.
Weather: Few small cumulus distant E-SE
Temperature: 56F, Dew point: 27F; Relative Humidity: 32%
Wind: WSW @ 15G23 kts
Sea-level pressure: 1013.7 mb; 29.93 in Hg: falling, then more
rapidly
Visibility: 80 miles
6-hr Max temp: 58F
6-hr Min temp: 40F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 80 137/56/27/2515G23/993/ FEW SML CU DSNT E-SE/
8/100 58012 10058 20040
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SUMMARY FOR WEDNESDAY, OCTOBER 19, 2022
TEMPERATURE (DEGREES F)
MAX…….56 NORMAL…..60
MIN…….38 NORMAL…..43
MEAN……47 NORMAL…..51
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..-4
TOTAL DEPARTURE FOR THE MONTH………………….+26 [+1.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………18 DEPARTURE……..+4
TOTAL HEATING UNITS FOR THE MONTH…………..178 DEPARTURE…….-24
TOTAL HEATING UNITS FOR THE SEASON………….277 DEPARTURE…….-43
TOTAL HEATING UNITS LAST SEASON TO DATE……..183 DEPARTURE…….+94
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……..-6
TOTAL COOLING UNITS FOR THE SEASON………….884 DEPARTURE……+208
TOTAL COOLING UNITS LAST SEASON TO DATE……..717 DEPARTURE……+167
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….32 WSW @ 10:10 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..35 @ 9:54 A.M.
DAVIS #2 ………………31 W @ 10:10 A.M.
RMY #2 (Instantaneous)…..34 WSW @ 9:43 A.M.
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 WSW @ 10:10 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 @ 10:07 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 WSW @ 10:05 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 WSW @ 10:08 A.M.
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…….11.7 WSW [281 total miles]
VECTOR #2……………..12.5
DAVIS #2………………12.6 WSW
RMY #2………………..12.5 WSW
RMY #1……….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…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..4.56 DEPARTURE…..+1.27
TOTAL PRECIPITATION FOR THE YEAR…………..32.55 DEPARTURE…..-9.41
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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/+8/0.05/566/82 23 N AERO N/A RMY 23
10/7 77/52/65/+9/0.00/632/92 31 NW AERO N/A RMY 31
10/8 59/40/50/-5/0.02/596/87 23 NW AERO N/A RMY 23
10/9 61/36/49/-6/0.00/648/95 30 W AERO N/A RMY 30
10/10 65/45/55/0/0.00/231/34 24 SW AERO N/A RMY 24
10/11 65/45/55/1/0.00/623/92 22 WSW AERO N/A RMY 22
10/12 74/51/63/+9/0.00/612/91 29 SW AERO N/A RMY 29
10/13 66/54/60/+6/1.20/074/11 39 SSE AERO N/A RMY 39
10/14 66/54/60/+7/0.97/107/16 41 SE AERO N/A RMY 42
10/15 69/47/58/+5/0.00/632/95 18 SSW AERO N/A RMY 19
10/16 69/50/60/+8/0.00/564/85 17 W AERO N/A RMY 18
10/17 59/50/55/+3/0.38/007/01 29 SSE AERO N/A RMY 30
10/18 66/42/54/+2/…./…/.. 34 SSW AERO N/A RMY 36
10/19 56/38/47/-4/0.00/…/.. 32 WSW AERO N/A RMY 34
10/20 The low since midnight is 39F, the daily normal low is 42F
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 20
HIGH 78F IN 1965,1984
LOW 24F IN 1972
PRECIP 7.10 INCHES IN 1996 (RECORD FOR MONTH)
SNOWFALL TRACE IN 1934,1943
PEAK GUST 63 MPH W IN 1966
RECORDS FOR OCTOBER 21
HIGH 79F IN 1979
LOW 24F IN 1974
PRECIP 2.34 INCHES IN 1944
SNOWFALL TRACE IN 1895,1907,1941
PEAK GUST 69e MPH S IN 1976
TODAY’S REPORT PREPARED BY: Benjamin Turner
