Saturday, October 12, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, OCTOBER 12, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0554E
SUNSET: 1706E
WARM AND WINDY CONDITIONS ON BLUE HILL TODAY….
An overall nice day today on Great Blue Hill, with mostly clear
skies and warm temperatures throughout the day. Wind has been
very active and dry today, though it’s been very pleasant overall.
Overnight temperatures were more mild, with temperatures in the
low 50’s. We quickly warmed up to 70F by late morning. It hasn’t
felt as warm, mostly because of the gusty winds, and the extremely
low dew point values.
Winds increased this morning with the passing of a front in our
region. Winds were quite gusty in the mid morning hours, with gusts
typically in the 20-25mph range. Wind has mostly been out of the
NW and WNW, bringing warm, dry air to the area. Our average so far
is around 16mph for the day and the peak gust so far for the day
occurred around 12:30pm at about 43 mph.
Visibility started around 40 miles and improved to 70 miles, mostly
due to the low dew point and clear skies.
The maximum temperature so far today is 70F, which is 12 degrees above
the normal high of 62F. The minimum temperature since midnight is 52F,
which is 7 degrees above the normal low of 45F.
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus distant SE-S, few cirrus E-S-W
Temperature: 55F; Dew Point: 45F; Relative Humidity: 68%
Wind: W @ 12G19 kts
Sea-level pressure: 1016.8 mb; 30.03 in. Hg: falling, then rising
Visibility: 40 miles
6-hr Max temp: 55F
6-hr Min temp: 52F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 40 065/55/45/2612G19/972/ FEW AC DSNT SE-S FEW CI
E-S-W 8/051 53003 10055 20052
10 A.M.
Weather: Clear, few cumulus all quadrants
Temperature: 69F; Dew Point: 39F; Relative Humidity: 33%
Wind: WNW @ 19G32 kts, peak wind WNW 38mph at 9:07 A.M.
Sea-level pressure: 1008.5 mb; 29.78 in. Hg: rising, the more
slowly
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 60 085/69/39/3019G32/978/ FEW CU ALQDS PK WND 3033/07/
8/100 51020
1 P.M.
Weather: Clear, few altocumulus SSE-S-WSW
Temperature: 69F; Dew Point: 28F; Relative Humidity: 22%
Wind: NW @ 19G33 kts, peak wind NW 43mph at 12:47 P.M.
Sea-level pressure: 1013.1 mb; 29.92 in. Hg: falling, then rising
Visibility: 70 miles
6-hr Max temp: 70F
6-hr Min temp: 55F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 70 095/69/28/3119G33/981/ FEW AC SSE-S-WSW PK WND
3137/47/ 8/050 53010 10070 20055
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SUMMARY FOR FRIDAY, OCTOBER 11, 2024
TEMPERATURE (DEGREES F)
MAX…….67 NORMAL…..63
MIN…….40 NORMAL…..46
MEAN……54 NORMAL…..54
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………0
TOTAL DEPARTURE FOR THE MONTH…………………….+17 [+1.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………11 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH……………80 DEPARTURE…….-22
TOTAL HEATING UNITS FOR THE SEASON………….150 DEPARTURE…….-69
TOTAL HEATING UNITS LAST SEASON TO DATE……..148 DEPARTURE……..+2
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….0 DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE SEASON………….757 DEPARTURE…….+82
TOTAL COOLING UNITS LAST SEASON TO DATE……..704 DEPARTURE…….+53
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)……….E28 WSW @ 09:38 P.M.
VECTOR #1 (1-Sec)……….27 WSW @ 09:42 P.M.
VECTOR #2 (1-Sec)……….27 WSW @ 09:57 P.M.
DAVIS #1……………….25 WSW @ 09:39 P.M.
DAVIS #2 ………………25 WSW @ 09:58 P.M.
RMY #1 (Instantaneous)…..27 SW @ 09:55 P.M.
RMY #2 (Instantaneous)…..27 SW @ 09:57 P.M.
MERLIN…………………27 W
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 WSW @ 09:39 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..18 @ 09:39 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 09:55 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 WSW @ 09:38 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 WSW @ 09:55 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 WSW @ 09:39 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 SW @ 09:55 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….11.5 W [275 total miles]
VECTOR #1……………..11.2
VECTOR #2……………..11.7
DAVIS #1………………11.7 W
DAVIS #2………………11.7 WNW
RMY #1………………..10.7 W
RMY #2………………..11.5 W
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..0.27 DEPARTURE…..-1.59
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.31 DEPARTURE…..+2.78
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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/+5/0.00/592/85 23 S VEC1 23 S RMY 23
10/4 74/54/64/+7/0.00/438/63 23 SW VEC1 22 SW RMY 22
10/5 72/52/62/+5/T/457/66 24 NNW VEC1 23 NNW RMY 24
10/6 65/47/56/0/0.00/655/95 20 SE VEC1 19 SE RMY 18
10/7 60/51/56/0/0.27/021/03 29 SSE VEC1 29 SSE RMY 31
10/8 64/45/55/0/0.00/649/95 21 NW VEC1 21 NW RMY 21
10/9 64/46/55/0/T/632/93 24 W VEC1 23 WNW RMY 23
10/10 60/42/51/-4/0.00/…/.. 36 NW VEC1 36 NW RMY 38
10/11 67/40/54/0/0.00/…/.. 28 WSW VEC1 27 WSW RMY 27
10/12 The low since midnight is 52F, 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 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
RECORDS FOR OCTOBER 13
HIGH 84F IN 1930,1954
LOW 29F IN 2012
PRECIP 5.87 INCHES IN 1895
SNOWFALL 4.2 INCHES IN 1934
PEAK GUST 46e MPH W IN 1950
TODAY’S REPORT PREPARED BY: Amanda Joly
