Saturday, October 14, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, OCTOBER 14, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0556E
SUNSET: 1704E
INCREASING CLOUDS ON BLUE HILL TODAY WITH A LIGHT BREEZE AND
SEASONAL TEMPERATURES…
This morning started off cool and crisp with a beautiful sun rise
and a mix of clouds throughout the sky. As the day progressed
there was an increase of altostratus and cirrostratus layers
obscuring the sun for most of the early afternoon. It’s still
been a comfortable day for most outdoor activities, even without
the sunshine.
Temperatures have been very similar to yesterday, with us again
just eclipsing 60F before dropping with the increasing cloud cover
this afternoon. With lower wind speeds it hasn’t felt as chilly
and the dew points remain in a comfortable range for us.
The wind was steady from the northwest this morning and once it
shifted from the west it decreased quite a bit. The average speed
so far for the day is about 10mph. Our peak gust currently is at
about 23mph which occurred in the early morning hours.
Visibility has been between 50-60 miles throughout the day.
Despite the increasing cloudiness and slight increase in dew point
we have been able to still take in the sights on the observatory’s
roof top.
The maximum temperature so far today has been 60F, which is 2
degrees below the normal high of 62F. The minimum temperature
since midnight is 44F, which is 1 degree below the normal low
of 45F.
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Today’s Observations:
7 A.M.
Weather: Broken cumulus, broken altocumulus, broken cirrus,
virga SSW-SW
Temperature: 46F; Dew Point: 42F; Relative Humidity: 84%
Wind: NW @ 8 kts
Sea-level pressure: 1013.7 mb; 29.94 in. Hg: steady, then
rising
Visibility: 60 miles
6-hr Max temp: 46F
6-hr Min temp: 44F
24-hr Precip: 0.00 inches
BHO SA 1155 E60 BKN 75 BKN 250 BKN 60 120/64/42/3108/988/
VIRGA SSW-SW 8/161 53005 10046 20044
10 A.M.
Weather: Scattered altocumulus, cirrostratus, few distant
cumulus S-W-NW
Temperature: 56F; Dew Point: 44F; Relative Humidity: 63%
Wind: NW @ 7 kts
Sea-level pressure: 1013.3 mb; 29.92in. Hg: falling, then more
slowly
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 100 SCT 60 102/56/44/3207/983/ FEW CU DSNT S-SW-NW
8/151 56018
1 P.M.
Weather: Broken altostratus, broken cirrostratus, few cumulus
all quadrants, sun dimly visible
Temperature: 56F; Dew Point: 44F; Relative Humidity: 64%
Wind: W @ 5 kts
Sea-level pressure: 1013.0 mb; 29.91 in. Hg: falling, then rising
Visibility: 60 miles
6-hr Max temp: 60F
6-hr Min temp: 46F
6-hr Precip: 0.00 inches
BHO SA 1755 E150 BKN 250 BKN 60 076/56/44/2705/975/ FEW CU ALQDS
SUN DMLY VSBL WND LGT/ 8/218 56026 10060 20046
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SUMMARY FOR FRIDAY, OCTOBER 13, 2023
TEMPERATURE (DEGREES F)
MAX…….61 NORMAL…..62
MIN…….43 NORMAL…..45
MEAN……52 NORMAL…..54
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-2
TOTAL DEPARTURE FOR THE MONTH…………………+67 [+5.0 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……………67 DEPARTURE…….-58
TOTAL HEATING UNITS FOR THE SEASON………….166 DEPARTURE…….-76
TOTAL HEATING UNITS LAST SEASON TO DATE……..221 DEPARTURE…….-55
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…….+10
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)……….E33 NW @ 02:50 P.M.
VECTOR #1 (1-Sec)……….31 NW @ 02:50 P.M.
VECTOR #2 (1-Sec)……….38 NW @ 03:33 P.M.
DAVIS #1……………….30 NW @ 02:50 P.M.
DAVIS #2 ………………33 NNW @ 03:33 P.M.
RMY #1 (Instantaneous)…..34 NW @ 02:50 P.M.
RMY #2 (Instantaneous)…..38 NW @ 03:33 P.M.
MERLIN…………………32 NW
RICHARDS (C5C) (Inst)……32 @ 03:32 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 NW @ 03:33 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 @ 03:18 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 @ 03:34 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 NW @ 03:18 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 NNW @ 03:34 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 NW @ 03:18 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 NW @ 03:34 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21 @ 03:18 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….11.6 NW [279 total miles]
VECTOR #1……………..11.5
VECTOR #2……………..12.2
DAVIS #1………………11.9 NW
DAVIS #2………………11.9 NNW
RMY #1………………..11.3 NW
RMY #2………………..11.9 NNW
RICHARDS (C5C)…………11.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..0.16 DEPARTURE…..-2.04
TOTAL PRECIPITATION FOR THE YEAR…………..47.38 DEPARTURE…..+6.51
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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 The low since midnight is 44F, the daily normal low is 45F
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OCTOBER DAILY RECORDS TO DATE
.NONE…
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 14
HIGH 79F IN 2000
LOW 28F IN 1958
PRECIP 2.69 INCHES IN 1990
SNOWFALL 2.0 INCHES IN 1913
PEAK GUST 63e W IN 1976
RECORDS FOR OCTOBER 15
HIGH 83F IN 1897
LOW 29F IN 1887,1937
PRECIP 4.58 INCHES IN 2005
SNOWFALL TRACE IN 1961,1972
PEAK GUST 69 MPH W IN 2003
TODAY’S REPORT PREPARED BY: Amanda Joly
