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Wednesday, June 5, 2024

June 5, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, JUNE 5, 2024 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

WEDNESDAY, JUNE 5, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0408E
SUNSET:  1918E

CLOUDS AND A FEW LIGHT SHOWERS THIS MORNING, HAZY SUNSHINE RETURNS
THIS AFTERNOON WITH VERY WARM AIR….

An abundance of cloud cover moved through this morning along
with a few light rain showers. Some heavier showers passed by
the Hill to the west and southwest, but here on the summit only
a trace of rain occurred as we were only on the edge. The clouds
have decreased early this afternoon with plenty of sunshine
taking over.

Temperatures are responding quickly to the increased sunshine as
readings have pushed into the low 80s by the 1pm observation.
The dew point was heading upward through the late morning hours,
pushing the 60 degree mark, but has come back down early this
afternoon into the upper 50s as the atmosphere begins to mix from
aloft.

The wind had been fairly steady all morning, but is starting to
increase a bit this afternoon thanks to the aforementioned
mixing. The average speed for the day so far is around 11mph.
The peak gust to this point is 21mph, which occurred just after
midnight.

Visibility was around 35-40 miles all morning, but the pine
pollen started releasing in earnest once the sun came out, and
now the view is down to around 25-30 miles.

The maximum temperature so far today is 81F degrees, which is
9 degrees above the normal high of 72F. The minimum temperature
since midnight is 56F degrees, which is 2 degrees above the
normal low of 54F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered cumulonimbus, broken altocumulus/castellanus,
broken cirrus, virga WSW-W
Temperature: 64F; Dew Point: 57F; Relative Humidity: 78%
Wind: WSW @ 9 kts
Sea-level pressure: 1015.2 mb; 29.98 in. Hg: falling, then steady
Visibility: 35 miles, 7 miles WSW-W, hazy
6-hr Max temp: 64F
6-hr Min temp: 56F
24-hr Precip:  0.00 inches
BHO SA 1155 65 SCT E120 BKN 250 BKN 35 152/64/57/2509/998/
CB SW-W MOV SE VIRGA WSW-W VSBY 7 WSW-W HAZY/ 8/383 56003
10064 20056

10 A.M.
Weather: Overcast altocumulus/castellanus, few breaks in overcast
all quadrants, few lower altocumulus castellanus all quadrants
Temperature: 69F; Dew Point: 60F; Relative Humidity: 72%
Wind: SSW @ 8 kts
Sea-level pressure: 1013.9 mb; 29.94 in. Hg: falling, then more rapidly
Visibility: 35 miles, hazy
3-hr Precip:  Trace
BHO SA 1455 E130 OVC 35 139/69/60/2108/994/ FEW BINOVC ALQDS
FEW LWR ACC ALQDS HAZY/ 8/08/ 58013 6000/

1 P.M.
Weather: Scattered altocumulus, broken cirrostratus, broken cirrus,
few cumulus distant NNW-N
Temperature: 81F; Dew Point: 58F; Relative Humidity: 46%
Wind: WSW @ 12G17 kts
Sea-level pressure: 1012.2 mb; 29.89 in. Hg: falling, then more rapidly
Visibility: 25 miles, hazy
6-hr Max temp: 81F
6-hr Min temp: 64F
6-hr Precip:  Trace
BHO SA 1755 120 SCT E200 BKN 250 -BKN 25 122/81/58/2412G17/989/
FEW CU DSNT NNW-N HAZY/ 8/278 58017 6000/ 10081 20064

————————————————————–

SUMMARY FOR TUESDAY, JUNE 4, 2024

TEMPERATURE (DEGREES F)
MAX…….75   NORMAL…..72
MIN…….55   NORMAL…..54
MEAN……65   NORMAL…..63

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+2
TOTAL DEPARTURE FOR THE MONTH…………………….+18 [+4.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………….0  DEPARTURE…….-18
TOTAL HEATING UNITS FOR THE SEASON…………5379  DEPARTURE……-784
TOTAL HEATING UNITS LAST SEASON TO DATE…….5230  DEPARTURE……+149

COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH…………….7  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE SEASON…………..44  DEPARTURE……..+9
TOTAL COOLING UNITS LAST SEASON TO DATE………45  DEPARTURE……..-1

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)……….E20 SSW  @  06:33 P.M.
VECTOR #1 (1-Sec)……….19 SSW  @  11:57 P.M.
VECTOR #2 (1-Sec)……….20 S    @  06:32 P.M.
DAVIS #1……………….21 S    @  06:33 P.M.
DAVIS #2 ………………24 S    @  06:24 P.M.
RMY #1 (Instantaneous)…..19 SSW  @  06:33 P.M.
RMY #2 (Instantaneous)…..20 S    @  06:32 P.M.
MERLIN…………………19 SW
RICHARDS (C5C) (Inst)…….M

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 S    @  06:27 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15      @  11:59 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16      @  06:33 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 S    @  11:59 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 S    @  06:26 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 SSW  @  11:59 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 S    @  06:33 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……….M

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….7.2 ESE [172 total miles] VECTOR #1……………..7.6
VECTOR #2……………..8.0
DAVIS #1………………7.5 SE
DAVIS #2………………8.0 SE
RMY #1………………..7.5 SE
RMY #2………………..8.0 ESE
RICHARDS (C5C)…………..M

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..0.00 DEPARTURE…..-0.64
TOTAL PRECIPITATION FOR THE YEAR (2024)…….30.82 DEPARTURE…..+7.58

————————————————————–

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/…/..             18 WNW VEC1 20 NW  RMY 20
6/2  83/52/68/+6/0.00/…/..             21 W   VEC1 21 W   RMY 21
6/3  78/57/68/+6/0.00/…/..             22 NE  VEC1 22 NE  RMY 21
6/4  75/55/65/+2/0.00/…/..             20 SSW VEC1 19 SSW RMY 19

6/5 The low since midnight is 56F, the daily normal low is 54F.

————————————————————–

JUNE DAILY RECORDS TO DATE

NONE.

————————————————————–

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR JUNE 5
HIGH 95F IN 1930
LOW 41F IN 1891
PRECIP 2.83 INS IN 1982
PEAK GUST 57 MPH NNW IN 1988

RECORDS FOR JUNE 6
HIGH 95F IN 1925
LOW 42F IN 1885, 1894, 1945
PRECIP 3.61 INS IN 2000
PEAK GUST 58 MPH NE IN 2000

TODAY’S REPORT PREPARED BY: Matt Douglas

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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