Thursday, October 31, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, OCTOBER 31, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0617E
SUNSET: 1638E
MAINLY SUNNY WITH NEAR RECORD WARM TEMPERATURES ON THIS HALLOWEEN….
Other than cirrus clouds painting the sky, it has been a mainly
sunny day after some early morning patchy fog across the low lying
areas surrounding Blue Hill.
Temperatures started the day on the warm side, missing the record
high minimum for the day by only 2 degrees with a low of 57F. Of
course it was only up from there with readings reaching the low 70s
by late this morning, and getting into the mid 70s early this
afternoon. The record high for today is 79F set in 1946, but it
appears we’ll fall short of reaching this value today. Stay tuned!
The dew point has been holding in the mid 50s, so it does feel a bit
sticky, especially compared to earlier this week when dew point
values were in the 20s and 30s.
Winds have been fairly steady today, mainly out of the west-southwest
averaging at around 13mph. The peak gust so far for the day is 24mph,
which occurred way back at around 12:45am.
Visibility has been somewhat limited today, first by thin fog early
this morning, and then by general haziness for the balance of the
day. The view improved from 20 miles early this morning to around
35-40 miles by early this afternoon.
The maximum temperature so far today is 76F, which is 20 degrees
above the normal high of 56F. The minimum temperature since midnight
is 57F, which is 18 degrees above the normal low of 39F.
As we all know, it’s been a rather dry month across the region. The
month of October is currently ranking as 6th driest on record here
at Blue Hill. Here is the list of rankings as compiled by our Chief
Scientist Mike Iacono.
BHO Lowest October Precipitation, inches (1885-2024):
1) 0.22 in 1924
2) 0.39 in 1994
3) 0.50 in 1946
4) 0.61 in 1935
5) 0.63 in 1897
6) 0.76 in 2024
7) 0.79 in 2001
8) 1.09 in 2013
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Today’s Observations:
7 A.M.
Weather: Thin broken cirrus
Temperature: 58F; Dew Point: 53F; Relative Humidity: 82%
Wind: WSW @ 12 kts
Sea-level pressure: 1019.6 mb; 30.11 in. Hg: rising, then steady
Visibility: 20 miles, thin fog
6-hr Max temp: 58F
6-hr Min temp: 57F
24-hr Precip: 0.00 inches
BHO SA 1155 E250 -BKN 20 196/58/53/2512/011/ PTCHY GF SSE-WNW
THN F ALQDS/ 8/001 51001 10058 20057
10 A.M.
Weather: Thin broken cirrus
Temperature: 71F; Dew Point: 56F; Relative Humidity: 58%
Wind: W @ 7 kts
Sea-level pressure: 1019.6 mb; 30.11 in. Hg: rising, then falling
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E250 -BKN 30 196/71/56/2607/011/ HAZY/ 8/001 50000
1 P.M.
Weather: Broken altocumulus/castellanus, broken cirrus
Temperature: 75F; Dew Point: 55F; Relative Humidity: 51%
Wind: WSW @ 6 kts, wind light
Sea-level pressure: 1017.8 mb; 30.06 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 75F
6-hr Min temp: 58F
6-hr Precip: 0.00 inches
BHO SA 1755 E100 BKN 250 BKN 40 178/75/55/2406/006/ HAZY WND LGT/
8/081 58018 10075 20058
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SUMMARY FOR WEDNESDAY, OCTOBER 30, 2024
TEMPERATURE (DEGREES F)
MAX…….71 NORMAL…..56
MIN…….46 NORMAL…..39
MEAN……59 NORMAL…..48
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+11
TOTAL DEPARTURE FOR THE MONTH……………………..+69 [+2.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….6 DEPARTURE…….-12
TOTAL HEATING UNITS FOR THE MONTH…………..303 DEPARTURE…….-73
TOTAL HEATING UNITS FOR THE SEASON………….373 DEPARTURE……-121
TOTAL HEATING UNITS LAST SEASON TO DATE……..327 DEPARTURE…….+46
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….4 DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE SEASON………….761 DEPARTURE…….+84
TOTAL COOLING UNITS LAST SEASON TO DATE……..715 DEPARTURE…….+46
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)………..28 SSE @ 03:14 A.M.
VECTOR #1 (1-Sec)……….31 SSE @ 03:14 A.M.
VECTOR #2 (1-Sec)……….28 SSE @ 05:00 A.M.
DAVIS #1……………….28 SSE @ 03:15 A.M.
DAVIS #2 ………………30 S @ 04:27 A.M.
RMY #1 (Instantaneous)…..28 SSE @ 05:02 A.M.
RMY #2 (Instantaneous)…..28 SSE @ 05:02 A.M.
MERLIN…………………26 SE
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 SSE @ 03:20 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 @ 05:02 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21 @ 04:56 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 SSE @ 05:02 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S @ 05:15 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..20 SSE @ 05:02 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 SSE @ 04:56 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.2 SSW [293 total miles]
VECTOR #1………………12.5
VECTOR #2………………12.8
DAVIS #1……………….12.0 S
DAVIS #2……………….12.5 S
RMY #1…………………12.1 S
RMY #2…………………12.9 S
RICHARDS (C5C)………….OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..0.76 DEPARTURE…..-4.55
TOTAL PRECIPITATION FOR THE YEAR (2024)…….43.80 DEPARTURE…..-0.18
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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/+7/0.00/452/65 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 64/45/55/0/0.00/663/97 21 NW VEC1 21 NW RMY 21
10/9 64/46/55/0/T/639/94 24 W VEC1 23 WNW RMY 23
10/10 60/42/51/-4/0.00/616/91 36 NW VEC1 36 NW RMY 38
10/11 67/40/54/0/0.00/635/94 28 WSW VEC1 27 WSW RMY 27
10/12 71/48/60/+6/0.00/652/97 44 NW VEC1 43 NW RMY 45
10/13 50/44/47/-7/0.20/007/01 32 ENE VEC1 32 ENE RMY 30
10/14 51/38/45/-8/0.06/000/00 35 NW VEC1 34 WNW RMY 36
10/15 55/35/45/-8/0.00/617/93 31 W VEC1 30 WNW RMY 31
10/16 56/38/47/-5/0.00/615/93 32 NW VEC1 31 NW RMY 32
10/17 54/35/45/-7/0.00/421/64 22 NE VEC1 22 NE RMY 20
10/18 59/40/50/-2/0.00/656/100 28 NNE VEC1 28 NE RMY 27
10/19 72/46/59/+8/0.00/653/100 20 WSW VEC1 19 WSW RMY 19
10/20 76/47/62/+11/0.00/650/100 21 WSW VEC1 22 WSW RMY 23
10/21 82/52/67/+16/0.00/628/97 25 WNW VEC1 25 W RMY 26
10/22 74/58/66/+16/0.00/632/98 18 WNW VEC1 17 WNW RMY 17
10/23 78/53/66/+16/0.00/571/89 35 SSW VEC1 35 SSW RMY 36
10/24 70/47/59/+9/T/346/54 26 NNW VEC1 26 NNW RMY 26
10/25 61/40/51/+2/0.00/636/100 20 NNW VEC1 21 NNW RMY 20
10/26 64/43/54/+5/0.00/495/78 37 W VEC1 39 W RMY 41
10/27 53/36/45/-4/0.00/625/99 28 W VEC1 29 WNW RMY 30
10/28 50/36/43/-5/0.00/560/89 20 NNW VEC1 21 NNW RMY 22
10/29 53/38/46/-2/0.01/157/25 24 SSE VEC1 25 SSE RMY 24
10/30 71/46/59/+11/0.22/249/40 28 SSE VEC1 31 SSE RMY 28
10/31 The low since midnight is 57F, the daily normal low is 39F.
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OCTOBER DAILY RECORDS TO DATE
10/21 RECORD HIGH TEMPERATURE OF 82F, OLD RECORD WAS 79F IN 1979
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 31
HIGH 79F IN 1946
LOW 22F IN 1904
PRECIP 3.74 INCHES IN 1991
SNOWFALL TRACE IN 1906
PEAK GUST 70e S IN 1945
RECORDS FOR NOVEMBER 1
HIGH 75 IN 2003
LOW 22 IN 1913,1923
PRECIP 2.37 INCHES IN 1988
SNOWFALL TRACE IN 1906,1951,2023
PEAK GUST 78 ESE IN 1997
TODAY’S REPORT PREPARED BY: Matt Douglas
