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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, OCTOBER 4, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0545E
SUNSET: 1720E
WARMING TEMPERATURES CONTINUE AT BLUE HILL TODAY….
This morning we had some upper level clouds and fog and then
increasing cloudiness as the day progressed. Most of the clouds
were a result of the rapid warming during the late morning hours
and a south-westerly breeze brought even more warm air to the
area. We are well above the average temperatures again today and
it feels more like a spring or early summer day than fall.
Temperatures have warmed into the mid 70s by noon. The dew point
has also been high, holding in the upper 50s, which is partially
to blame for the hazy conditions here at Blue Hill. Though with
the increase in temperatures, the relative humidity has dropped
significantly, making it a great day for outdoor activities.
The wind was light for most of the morning but a few nice breezes
came through in the early afternoon. Wind has mostly been from the
WSW and south directions. The average speed for the day so far is
around 8mph. The peak gust so far is 22mph, which occurred just
before 12pm.
Visibility has been limited to around 30 miles throughout the day
due to haziness and higher dew point values.
The maximum temperature so far today is 74F, which is 8 degrees
above the normal high of 66F. The minimum temperature since midnight
is 54F, which is 5 degrees above the normal low of 49F.
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Today’s Observations:
7 A.M.
Weather: Broken cirrus, few altocumulus NNE-E-SE
Temperature: 56F; Dew Point: 55F; Relative Humidity: 95%
Wind: W @ 7 kts
Sea-level pressure: 1023.7 mb; 30.23 in. Hg: rising, then more slowly
Visibility: 30 miles, thin fog
6-hr Max temp: 56F
6-hr Min temp: 54F
24-hr Precip: 0.00 inches
BHO SA 1155 E250 BKN 30 237/56/55/2607/023/ FEW AC NNE-E-SE THN F ALQDS
8/051 51008 10056 20054
10 A.M.
Weather: Broken cirrostratus/cirrus
Temperature: 69F; Dew Point: 58F; Relative Humidity: 67%
Wind: S @ 6 kts, wind light
Sea-level pressure: 1023.7 mb; 30.23 in. Hg: rising, then falling
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E220 BKN 250 BKN 30 237/69/58/2006/023/ HAZY WND LGT/
8/008 50000
1 P.M.
Weather: Overcast cirrostratus, broken cumulus, few breaks in overcast
Temperature: 72F; Dew Point: 57F; Relative Humidity: 58%
Wind: S @ 8 kts
Sea-level pressure: 1022.6 mb; 30.20 in. Hg: falling unsteadily
Visibility: 30 miles, hazy
6-hr Max temp: 74F
6-hr Min temp: 56F
6-hr Precip: 0.00 inches
BHO SA 1755 E35 BKN 220 BKN 250 OVC 30 226/72/57/1908/020/ FEW BINOVC ALQDS
HAZY 8/208 57011 10074 20056
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SUMMARY FOR THURSDAY, OCTOBER 3, 2024
TEMPERATURE (DEGREES F)
MAX…….72 NORMAL…..66
MIN…….52 NORMAL…..49
MEAN……62 NORMAL…..57
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+5
TOTAL DEPARTURE FOR THE MONTH……………………..+9 [+2.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….3 DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE MONTH……………13 DEPARTURE…….-11
TOTAL HEATING UNITS FOR THE SEASON…………..83 DEPARTURE…….-58
TOTAL HEATING UNITS LAST SEASON TO DATE……..108 DEPARTURE…….-25
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH…………….0 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE SEASON………….757 DEPARTURE…….+85
TOTAL COOLING UNITS LAST SEASON TO DATE……..692 DEPARTURE…….+68
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated
F420C (Official)……….E23 S @ 06:04 P.M.
VECTOR #1 (1-Sec)……….23 S @ 06:20 P.M.
VECTOR #2 (1-Sec)……….23 S @ 06:05 P.M.
DAVIS #1……………….23 S @ 06:04 P.M.
DAVIS #2 ………………24 S @ 06:20 P.M.
RMY #1 (Instantaneous)…..23 S @ 06:20 P.M.
RMY #2 (Instantaneous)…..24 SSW @ 06:03 P.M.
MERLIN…………………23 SSW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 SSW @ 06:05 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..17 @ 06:05 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 06:05 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 S @ 06:05 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 S @ 06:05 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 SSW @ 06:05 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 S @ 06:05 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..6.3 SSW [150 total miles]
VECTOR #1………………7.2
VECTOR #2………………7.3
DAVIS #1……………….6.8 SSW
DAVIS #2……………….7.2 SSW
RMY #1…………………7.0 SW
RMY #2…………………7.3 SW
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH………….TRACE DEPARTURE…..-0.50
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.04 DEPARTURE…..+3.87
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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 66/55/61/+3/T/134/19 28 ENE VEC1 28 ENE RMY 29
10/2 66/52/59/+1/T/252/36 21 ENE VEC1 20 ENE RMY 20
10/3 72/52/62/+5/0.00/…/.. 23 S VEC1 23 S RMY 23
10/4 The low since midnight is 54F, the daily normal low is 49F.
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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 4
HIGH 84F IN 2007
LOW 28F IN 1888
PRECIP 1.87 INCHES IN 2011
PEAK GUST 59 MPH SSW IN 1990
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
TODAY’S REPORT PREPARED BY: Amanda Joly
