Monday, October 16, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, OCTOBER 16, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0558E
SUNSET: 1701E
MAINLY CLOUDY AND COOL ONCE AGAIN WITH SCATTERED RAIN SHOWERS…
Clouds are once again hanging around today. Any sun has been
brief and far between so far today. Scattered rain showers
moved through early this morning, however more showers have
developed late this morning and early this afternoon with
a few coming through just before the 1pm observation. 0.04″
of rain was left in the gauge early this morning, with only
an additional trace so far since then.
Temperatures are again on the chilly side with readings only
reaching the mid to upper 50s. The dew point has been holding
in the mid 40s. With the abundant cloud cover and dampness in
the air, it does feel a bit raw out there.
The wind has been generally on the light side most of the day
with an average speed so far of around 8mph. Our peak gust so
far is around 17mph, occurring just before 5:30am this morning.
Visibility has been excellent today, except where rain showers
are passing by in the distance. The view has ranged between
60-70 miles for the most part, all in all a very good view
today from the tower roof!
The maximum temperature so far today has been 58F, which is 3
degrees below the normal high of 61F. The minimum temperature
since midnight is 44F, which is equal to the normal low of 44F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, broken stratocumulus,
virga distant NNE-E
Temperature: 47F; Dew Point: 46F; Relative Humidity: 97%
Wind: NW @ 7 kts
Sea-level pressure: 999.6 mb; 29.52 in. Hg: rising, then more rapidly
Visibility: 60 miles
6-hr Max temp: 47F
6-hr Min temp: 44F
24-hr Precip: 0.04 inches
BHO SA 1155 30 SCT 50 BKN 60 996/47/46/3107/952/ VIRGA DSNT NNE-E
RW-B59E39/ 8/500 53008 6004/ 70004 10047 20044
10 A.M.
Weather: Scattered cumulus, broken stratocumulus, broken cirrus,
stratocumulus lenticularis distant NW-N, virga distant W-N
Temperature: 53F; Dew Point: 45F; Relative Humidity: 74%
Wind: N @ 5 kts, wind light
Sea-level pressure: 1000.7 mb; 29.55 in. Hg: rising unsteadily
Visibility: 70 miles
3-hr Precip: 0.00 inches
BHO SA 1455 30 SCT E50 BKN 250 BKN 70 007/53/45/3505/955/
SCSL DSNT NW-N VIRGA DSNT W-N WND LGT/ 8/802 52011
1 P.M.
Weather: Scattered cumulus, broken stratocumulus, broken altocumulus,
very light rain showers, virga all quadrants
Temperature: 53F; Dew Point: 46F; Relative Humidity: 78%
Wind: NE @ 2 kts, wind light
Sea-level pressure: 1001.5 mb; 29.57 in. Hg: rising unsteadily
Visibility: 60 miles, 10 miles SW-WSW
6-hr Max temp: 58F
6-hr Min temp: 47F
6-hr Precip: Trace
BHO SA 1755 20 SCT E30 BKN 50 BKN 60RW- 015/53/46/0402/957/
PCPN VRY LGT VIRGA ALQDS RW-B49 VSBY 10 SW-WSW WND LGT/
8/860 52008 6000/ 10058 20047
————————————————————–
SUMMARY FOR SUNDAY, OCTOBER 15, 2023
TEMPERATURE (DEGREES F)
MAX…….59 NORMAL…..61
MIN…….44 NORMAL…..44
MEAN……52 NORMAL…..53
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-1
TOTAL DEPARTURE FOR THE MONTH…………………+65 [+4.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………13 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH……………93 DEPARTURE…….-56
TOTAL HEATING UNITS FOR THE SEASON………….192 DEPARTURE…….-75
TOTAL HEATING UNITS LAST SEASON TO DATE……..233 DEPARTURE…….-41
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH……………15 DEPARTURE……..+9
TOTAL COOLING UNITS FOR THE SEASON………….704 DEPARTURE…….+28
TOTAL COOLING UNITS LAST SEASON TO DATE……..884 DEPARTURE……-180
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E24 NNW @ 08:25 A.M.
VECTOR #1 (1-Sec)……….25 NNW @ 08:04 A.M.
VECTOR #2 (1-Sec)……….25 NNW @ 08:23 A.M.
DAVIS #1……………….24 NNW @ 08:04 A.M.
DAVIS #2 ………………24 N @ 08:21 A.M.
RMY #1 (Instantaneous)…..25 NNW @ 08:25 A.M.
RMY #2 (Instantaneous)…..29 N @ 08:21 A.M.
MERLIN…………………24 NW
RICHARDS (C5C) (Inst)……24 @ 08:04 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 NNW @ 08:05 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 07:53 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 08:06 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 NNW @ 08:05 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 N @ 08:05 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 NNW @ 07:53 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 N @ 08:06 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17 @ 07:53 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.8 N [234 total miles]
VECTOR #1………………10.4
VECTOR #2………………10.7
DAVIS #1……………….10.2 NNW
DAVIS #2……………….10.4 NNW
RMY #1………………….9.8 NNW
RMY #2…………………10.4 NNW
RICHARDS (C5C)………….10.4
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.04 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..0.20 DEPARTURE…..-2.35
TOTAL PRECIPITATION FOR THE YEAR…………..47.42 DEPARTURE…..+6.20
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
10/1 68/50/59/+1/0.00/458/65 20 NNE VEC1 20 NNE RMY 19
10/2 68/55/62/+4/0.00/681/97 24 NE VEC1 23 NE RMY 24
10/3 81/54/68/+11/0.00/672/96 18 WSW VEC1 18 WSW RMY 18
10/4 81/64/73/+16/0.00/669/96 17 S VEC1 17 S RMY 16
10/5 77/59/68/+11/0.00/638/92 24 S VEC1 24 S RMY 23
10/6 71/60/66/+10/0.00/269/39 20 SE VEC1 19 SE RMY 18
10/7 68/54/61/+5/0.16/007/01 30 WNW VEC1 29 WNW RMY 29
10/8 63/48/56/+1/0.00/651/95 30 W VEC1 30 WNW RMY 30
10/9 61/44/53/-2/0.00/532/78 25 WSW VEC1 24 WSW RMY 25
10/10 64/47/56/+1/T/245/36 23 W VEC1 22 W RMY 21
10/11 68/50/59/+5/0.00/393/58 23 SSW VEC1 22 SW RMY 22
10/12 69/51/60/+6/0.00/…/.. 18 NW VEC1 18 NNW RMY 18
10/13 61/43/52/-2/0.00/…/.. 33 NW VEC1 31 NW RMY 34
10/14 60/44/52/-1/0.00/…/.. 24 NW VEC1 23 NW RMY 23
10/15 59/44/52/-1/0.00/…/.. 24 NNW VEC1 25 NNW RMY 25
10/16 The low since midnight is 44F, the daily normal low is 44F
————————————————————–
OCTOBER DAILY RECORDS TO DATE
.NONE…
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 16
HIGH 86F IN 1897
LOW 28F IN 1886
PRECIP 2.82 INCHES IN 1974
SNOWFALL TRACE IN 2009
PEAK GUST 68e MPH SSE IN 1954 (HURRICANE HAZEL)
RECORDS FOR OCTOBER 17
HIGH 86F IN 1947
LOW 25F IN 1886
PRECIP 1.87 INCHES IN 1989
SNOWFALL TRACE IN 1970
PEAK GUST 61 MPH E IN 2019
TODAY’S REPORT PREPARED BY: Matt Douglas
