Sunday, June 11, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, JUNE 11, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0407E
SUNSET: 1921E
MAINLY SUNNY AND WARM WITH INCREASING HIGH THIN CLOUDS AND SOME
DEVELOPING CUMULUS….
Hazy sunshine has been the theme today with an increasing amount
of cirrus clouds as we work into the afternoon hours. Some cumulus
have also popped up thanks to the strong surface heating today.
Temperatures have risen quite easily into the upper 70s to low
80s across the area this afternoon. The dew point has been holding
in the mid 50s, so there is a touch of a humid feel in the air,
but it’s nothing too tough to take for this time of year.
The wind has been light and variable so far today. The average
speed has only been around 7mph with a peak gust of only 10-15mph
since 7am this morning.
Visibility has been limited today due to increasing haziness. We
started the day being able to see around 40 miles, but decreased
to around 25-30 miles by early this afternoon.
The high temperature so far today is 79F, this is 5 degrees above
the normal maximum of 74F. The low since midnight is 55F, this is
1 degree below the normal minimum of 56F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus
Temperature: 63F; Dew Point: 54F; Relative Humidity: 71%
Wind: NW @ 5 kts, wind light
Sea-level pressure: 1013.5 mb; 29.93 in. Hg: rising, then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 63F
6-hr Min temp: 55F
24-hr Precip: 0.05 ins.
BHO SA 1155 250 -SCT 40 135/63/54/3105/993/ HAZY WND LGT/
8/001 51012 70005 10063 20055
10 A.M.
Weather: Thin scattered cirrus, thin smoke layer aloft all quadrants
Temperature: 72F; Dew Point: 55F; Relative Humidity: 54%
Wind: WNW @ 2 kts, wind light and variable
Sea-level pressure: 1013.7 mb; 29.93 in. Hg: steady, then rising
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 250 -SCT 30 137/72/55/3002/993/ THN K LYR ALF ALQDS
HAZY WND L/V/ 8/001 53002
1 P.M.
Weather: Scattered cumulus, thin broken cirrus, thin smoke layer
aloft all quadrants
Temperature: 78F; Dew Point: 55F; Relative Humidity: 46%
Wind: WSW @ 2 kts, wind light and variable
Sea-level pressure: 1012.9 mb; 29.91 in. Hg: falling, then more rapidly
Visibility: 30 miles, hazy
6-hr Max temp: 79F
6-hr Min temp: 63F
6-hr Precip: 0.00 inches
BHO SA 1755 35 SCT E250 -BKN 30 129/78/55/2502/991/ THN K LYR ALF
ALQDS HAZY WND L/V/ 8/201 58008 10079 20063
————————————————————–
SUMMARY FOR SATURDAY, JUNE 10, 2023
TEMPERATURE (DEGREES F)
MAX…….67 NORMAL…..74
MIN…….51 NORMAL…..56
MEAN……59 NORMAL…..65
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………-6
TOTAL DEPARTURE FOR THE MONTH………………..-46 [-4.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….6 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH……………78 DEPARTURE…….+39
TOTAL HEATING UNITS FOR THE SEASON…………5274 DEPARTURE……-910
TOTAL HEATING UNITS LAST SEASON TO DATE…….5589 DEPARTURE……-315
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE MONTH……………14 DEPARTURE……..-8
TOTAL COOLING UNITS FOR THE SEASON…………..45 DEPARTURE……..-5
TOTAL COOLING UNITS LAST SEASON TO DATE………78 DEPARTURE…….-33
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E26 WNW @ 01:00 P.M.
VECTOR #1 (1-Sec)……….26 WNW @ 01:00 P.M.
VECTOR #2 (1-Sec)……….28 WNW @ 01:01 P.M.
DAVIS #1……………….27 W @ 01:00 P.M.
DAVIS #2 ………………26 WNW @ 12:58 P.M.
RMY #1 (Instantaneous)…..26 WNW @ 01:01 P.M.
RMY #2 (Instantaneous)…..27 WNW @ 01:01 P.M.
MERLIN…………………25 W
RICHARDS (C5C) (Inst)……27 @ 01:00 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 WNW @ 01:01 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 @ 01:01 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 01:02 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 W @ 01:00 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 WNW @ 01:00 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 WNW @ 01:01 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 W @ 01:03 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19 @ 01:01 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……….5.1 NNW [123 total miles]
VECTOR #1………………..5.6
VECTOR #2………………..5.9
DAVIS #1…………………5.1 WNW
DAVIS #2…………………5.3 NW
RMY #1…………………..5.5 NW
RMY #2…………………..5.8 NW
RICHARDS (C5C)……………6.1
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.05 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..1.46 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE YEAR…………..22.21 DEPARTURE…..-2.00
————————————————————–
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 88/56/72/+10/0.00/859/95 21 WSW VEC1 21 WSW RMY 21
6/2 91/53/72/+10/0.53/634/70 37 ENE VEC1 39 ENE RMY 37 TSTM
6/3 53/43/48/-14/0.16/000/00 36 NE VEC1 38 NE RMY 36
6/4 52/43/48/-15/0.17/009/01 30 N VEC1 32 N RMY 29
6/5 58/47/53/-10/0.08/027/03 22 N VEC1 24 N RMY 23
6/6 72/50/61/-2/T/…/.. 31 NNW VEC1 31 NNW RMY 26 TSTM
6/7 65/50/58/-6/0.00/…/.. 28 NW VEC1 29 NW RMY 29
6/8 64/51/58/-6/T/…/.. 13 WNW VEC1 13 WNW RMY 10
6/9 64/49/57/-7/0.47/…/.. 20 WNW VEC1 21 ESE RMY 20 TSTM
6/10 67/51/59/-6/0.05/…/.. 26 WNW VEC1 26 WNW RMY 26 TSTM
6/11 The low since midnight is 55F, the daily normal low is 56F
DAILY RECORDS
06/02/2023: TIED RECORD HIGH MAXIMUM TEMPERATURE OF 91F,
ALSO SET IN 1895
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JUNE 11
HIGH 92F IN 1973, 1984, 1997
LOW 40F IN 1972
PRECIP 2.66 INCHES IN 1922
PEAK GUST 43e MPH S IN 1945
RECORDS FOR JUNE 12
HIGH 94F IN 2017
LOW 40F IN 1906
PRECIP 1.79 INS 1955
PEAK GUST 58 MPH NW IN 1991
TODAY’S REPORT PREPARED BY: Matt Douglas
