Monday, June 17, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, JUNE 17, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0407E
SUNSET: 1924E
INCREASING CLOUD COVER, BUT OVERALL A FAIRLY DECENT DAY AHEAD OF
AN EXPECTED HEATWAVE….
Sunshine ruled during the morning hours, however clouds are pushing
into the area early this afternoon as a weak disturbance aloft
pinwheels down on a northwest flow on the periphery of a large
upper level ridge building into the region.
Temperatures have warmed into the upper 70s to near 80, so all in
all, a very comfortable day. The dew point has been hanging out
in the upper 50s most of the day, finally reaching 60F at 1pm, so
for now, the humidity level isn’t too bad. Enjoy this air while it
lasts however, as big changes arrive by tomorrow.
The wind has been a bit busy today with an average speed of around
13mph so far for the day. The direction has been mainly south-
southwest. The peak gust so far is 28mph, which occurred just
before the 1pm observation.
Visibility has been limited most of the day due to haziness. The
view has been between 30-40 miles all day.
The maximum temperature so far today is 80 degrees, which is
4 degrees above the normal high of 76F. The minimum temperature
since midnight is 56F, which is 2 degrees below the normal
low of 58F.
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Today’s Observations:
7 A.M.
Weather: Thin broken cirrus, few stratocumulus distant S-W-N,
few altocumulus castellanus distant WNW-NW
Temperature: 62F; Dew Point: 57F; Relative Humidity: 84%
Wind: SSW @ 10G17 kts
Sea-level pressure: 1024.6 mb; 30.26 in. Hg: rising, then steady
Visibility: 30 miles, hazy
6-hr Max temp: 62F
6-hr Min temp: 56F
24-hr Precip: 0.00 inches
BHO SA 1155 E250 -BKN 30 246/62/57/2010G17/026/ FEW SC DSNT S-W-N
FEW ACC DSNT WNW-NW HAZY/ 8/581 51003 10062 20056
10 A.M.
Weather: Scattered altocumulus castellanus, thin broken cirrus,
few cumulus distant SW
Temperature: 74F; Dew Point: 58F; Relative Humidity: 58%
Wind: SSW @ 9G18 kts
Sea-level pressure: 1023.6 mb; 30.23 in. Hg: falling, then more slowly
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 70 SCT E250 -BKN 40 236/74/58/2009G18/023/ FEW CU DSNT SW
HAZY/ 8/281 57010
1 P.M.
Weather: Broken altocumulus, thin broken cirrus, few cumulus distant
SW-NW-NNE
Temperature: 78F; Dew Point: 60F; Relative Humidity: 56%
Wind: SSW @ 15G24 kts
Sea-level pressure: 1023.1 mb; 30.21 in. Hg: falling, then rising
Visibility: 40 miles, hazy
6-hr Max temp: 79F
6-hr Min temp: 62F
6-hr Precip: 0.00 inches
BHO SA 1755 E150 BKN 250 -BKN 40 231/78/60/2115G24/021/
FEW CU DSNT SW-NW-NNE HAZY/ 8/251 55005 10079 20062
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SUMMARY FOR SUNDAY, JUNE 16, 2024
TEMPERATURE (DEGREES F)
MAX…….72 NORMAL…..76
MIN…….51 NORMAL…..58
MEAN……62 NORMAL…..67
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-5
TOTAL DEPARTURE FOR THE MONTH…………………….+39 [+2.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….3 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH……………11 DEPARTURE…….-42
TOTAL HEATING UNITS FOR THE SEASON…………5390 DEPARTURE……-807
TOTAL HEATING UNITS LAST SEASON TO DATE…….5274 DEPARTURE……+116
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE MONTH……………37 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE SEASON…………..74 DEPARTURE……..+5
TOTAL COOLING UNITS LAST SEASON TO DATE………68 DEPARTURE……..+6
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)……….E22 SSE @ 05:13 P.M.
VECTOR #1 (1-Sec)……….23 S @ 07:19 P.M.
VECTOR #2 (1-Sec)……….23 S @ 07:19 P.M.
DAVIS #1……………….23 SE @ 05:13 P.M.
DAVIS #2 ………………29 S @ 07:19 P.M.
RMY #1 (Instantaneous)…..23 S @ 07:19 P.M.
RMY #2 (Instantaneous)…..24 S @ 07:19 P.M.
MERLIN…………………21 S
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 S @ 08:06 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 09:21 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 @ 07:21 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 S @ 09:22 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S @ 07:57 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 S @ 09:49 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 S @ 07:57 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.8 N [186 total miles]
VECTOR #1……………..8.4
VECTOR #2……………..8.8
DAVIS #1………………8.2 ESE
DAVIS #2………………8.7 ESE
RMY #1………………..8.2 E
RMY #2………………..8.8 ENE
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…………..1.38 DEPARTURE…..-1.21
TOTAL PRECIPITATION FOR THE YEAR (2024)…….32.20 DEPARTURE…..+7.01
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PRELIMINARY CLIMATE SUMMARY FOR JUNE 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
6/1 79/53/66/+4/0.00/878/97 18 WNW VEC1 20 NW RMY 20
6/2 83/52/68/+6/0.00/780/86 21 W VEC1 21 W RMY 21
6/3 78/57/68/+6/0.00/626/69 22 NE VEC1 22 NE RMY 21
6/4 75/55/65/+2/0.00/817/90 20 SSW VEC1 19 SSW RMY 19
6/5 84/56/70/+7/T/564/62 29 SW VEC1 28 SW RMY 29
6/6 74/60/67/+4/0.01/064/07 20 SSE VEC1 20 SSE RMY 20
6/7 80/60/70/+6/0.14/410/45 26 WNW VEC1 27 WNW RMY 27
6/8 73/54/64/0/T/767/84 48 W VEC1 49 W RMY 47
6/9 67/55/61/-3/0.25/292/32 29 WNW VEC1 28 WNW RMY 26
6/10 75/54/65/0/T/868/95 28 W VEC1 27 W RMY 27
6/11 71/53/62/-3/0.00/320/35 16 WNW VEC1 15 WNW RMY 15
6/12 76/59/68/+3/0.00/531/58 16 S VEC1 16 SSE RMY 17
6/13 82/57/70/+4/0.00/…/.. 28 SW VEC1 27 SW RMY 28
6/14 84/63/74/+9/0.75/…/.. 50 NW VEC1 50 NW RMY 53 TSTM
6/15 75/54/66/0/0.23/…/.. 23 NNW VEC1 27 NW RMY 26
6/16 72/51/62/-5/0.00/…/.. 22 SSE VEC1 23 S RMY 23
6/17 The low since midnight is 56F, the daily normal low is 58F.
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JUNE 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 JUNE 17
HIGH 93F IN 1894
LOW 44F IN 1920
PRECIP 2.79 INS 2001 (Sub-Tropical storm ALLISON)
PEAK GUST 55e MPH S IN 1977
RECORDS FOR JUNE 18
HIGH 93F IN 1929, 1994
LOW 39F IN 1920
PRECIP 3.36 INS 1998
PEAK GUST 48e MPH W IN 1943
TODAY’S REPORT PREPARED BY: Matt Douglas
