Sunday, August 11, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, AUGUST 11, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0448E
SUNSET: 1850E
PARTLY CLOUDY AND COOL WITH GOOD VISIBILITY WITH THE WIND
PICKING UP A BIT IN THE AFTERNOON….
We observed great weather conditions today for late summer,
being seasonable and dry with good visibility. The wind shifted
from northwesterly to southwesterly in terms of direction, with
an average speed of 10 knots in the afternoon hours. We are
experiencing frequent gusts of 20 kts following a much calmer
morning.
Visibility has been great, with the maximum being 80 miles at the
1 o’ clock observation. Dew points have stayed in the mid 50’s,
giving us some comfortable hiking weather!
The maximum temperature so far today is 81F, which is the same
as the normal high. The minimum temperature since midnight is 63F,
which is the same as the normal low.
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Today’s Observations:
7 A.M.
Weather: Scattered cirrocumulus, few altocumulus SE-S-SW
Temperature: 68F; Dew Point: 56F; Relative Humidity: 65%
Wind: WNW @ 7 kts
Sea-level pressure: 1016.1 mb ; 30.01 in. Hg: rising unsteadily
Visibility: 70 miles
6-hr Max temp: 68F
6-hr Min temp: 63F
24-hr Precip: 0.00 inches
BHO SA 1155 250 SCT 70 161/68/56/3007/001/ FEW AC SE-S-SW/ 8/089 52011
10068 20063 10068 20063
10 A.M.
Weather: Scattered cirrus, few altocumulus
Temperature: 78F; Dew Point: 56F; Relative Humidity: 47%
Wind: SSW @ 6 kts, wind light
Sea-level pressure: 1016.0 mb; 30.00 in. Hg: falling unsteadily
Visibility: 70 miles
3-hr Precip: 0.00 inches
BHO SA 1455 250 SCT 70 160/78/56/2005/000/ FEW AC ALQDS WND LGT/ 8/082 57001
1 P.M.
Weather: Scattered altocumulus, broken cirrus, few cumulus
Temperature: 81F; Dew Point: 54F; Relative Humidity: 40%
Wind: SW @ 8G15 kts
Sea-level pressure: 1014.9 mb; 29.97 in. Hg: falling, then more rapidly
Visibility: 80 miles
6-hr Max temp: 81F
6-hr Min temp: 68F
6-hr Precip: 0.00 inches
BHO SA 1755 110 SCT 250 BKN 80 149/81/54/2208G15/997/ FEW CU ALQDS/ 8/151
58011 10081 20068
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SUMMARY FOR SATURDAY, AUGUST 10, 2024
TEMPERATURE (DEGREES F)
MAX…….85 NORMAL…..81
MIN…….68 NORMAL…..63
MEAN……77 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+5
TOTAL DEPARTURE FOR THE MONTH…………………….+23 [+1.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….2 DEPARTURE………0
TOTAL HEATING UNITS FOR THE SEASON……………2 DEPARTURE……..-7
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE……..+2
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY……………12 DEPARTURE……..+5
TOTAL COOLING UNITS FOR THE MONTH…………..102 DEPARTURE…….+24
TOTAL COOLING UNITS FOR THE SEASON………….599 DEPARTURE……+135
TOTAL COOLING UNITS LAST SEASON TO DATE……..481 DEPARTURE……+118
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)……….E38 SSW @ 01:03 A.M.
VECTOR #1 (1-Sec)……….41 SSW @ 12:41 A.M.
VECTOR #2 (1-Sec)……….40 SSW @ 01:03 A.M.
DAVIS #1……………….40 S @ 01:02 A.M.
DAVIS #2 ………………39 S @ 12:26 A.M.
RMY #1 (Instantaneous)…..43 SSW @ 01:03 A.M.
RMY #2 (Instantaneous)…..41 SSW @ 01:03 A.M.
MERLIN………………..MISSING
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………29 SSW @ 01:15 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..28 @ 01:05 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30 @ 01:05 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………27 SSW @ 01:05 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………29 SSW @ 01:05 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..28 S @ 01:05 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..30 SSW @ 01:05 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……11.5 W [277 total miles]
VECTOR #1…………….11.8
VECTOR #2…………….12.6
DAVIS #1……………..12.0 WSW
DAVIS #2……………..12.2 W
RMY #1……………….11.4 W
RMY #2……………….12.5 W
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..1.89 DEPARTURE…..+0.57
TOTAL PRECIPITATION FOR THE YEAR (2024)…….40.14 DEPARTURE…..+8.12
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PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
8/1 92/71/82/+9/T/779/90 24 W VEC1 24 W RMY 23
8/2 94/73/84/+11/0.01/579/67 31 SSW VEC1 31 SSW RMY 30 TSTM
8/3 92/75/84/+11/0.00/612/71 29 W VEC1 28 W RMY 28
8/4 85/68/77/+4/0.20/318/37 29 WSW VEC1 29 WSW RMY 31 TSTM
8/5 90/67/79/+6/T/686/80 28 SSW VEC1 28 SSW RMY 29
8/6 73/60/67/-6/0.56/009/01 26 ENE VEC1 26 ENE RMY 26
8/7 69/57/63/-10/0.18/119/14 25 NE VEC1 23 NE RMY 23
8/8 72/58/65/-7/0.09/187/22 20 ESE VEC1 20 ESE RMY 19
8/9 82/62/72/0/…/…/.. 50 SSW VEC1 48 S RMY 50
8/10 85/68/77/+5/…/…/.. 38 SSW VEC1 41 SSW RMY 43
8/11 The low since midnight is 63F, the daily normal low is 63F.
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AUGUST DAILY RECORDS TO DATE
8/3 RECORD HIGH MINIMUM TEMPERATURE OF 75F,
TIED THE PREVIOUS RECORD SET IN 2020
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 11
HIGH 97F IN 1944
LOW 49F IN 1972
PRECIP 3.13 INCHES IN 1990
PEAK GUST 44 MPH SW IN 1971
RECORDS FOR AUGUST 12
HIGH 99F IN 1944
LOW 48F IN 1930
PRECIP 1.89 INCHES IN 1979
PEAK GUST 50 MPH NE IN 1983
TODAY’S REPORT PREPARED BY: Benjamin Turner
