Wednesday, June 7, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, JUNE 7, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0408E
SUNSET: 1919E
CLOUDY SKIES, CONTINUED VISIBILITY IMPACTED BY CANADIAN
WILDFIRES…
This morning started off with sunshine but very limited visibility
due to the smoke aloft from the Canadian wildfires. As the day
progressed, visibility slowly increased to about 40 miles despite
increased cloudiness in the area.
Temperatures remained below average today, with a high at the last
observation of only 61F. The dew point remained steady in the upper
40s with relative humidity in the upper 50s to low 60s. A very
comfortable and breezy day on Great Blue Hill!
The wind has been generally out of the northwest to west-
northwest again today with an average speed around 12mph. The peak
gust so far has been around 31mph.
The high temperature so far today is 61F, this is 12 degrees
below the normal maximum of 73F. The low since midnight is 50F,
this is 5 degrees below the normal minimum of 55F.
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Today’s Observations:
7 A.M.
Weather: Few stratocumulus all quadrants, smoke layer aloft
Temperature: 57F; Dew Point: 48F; Relative Humidity: 71%
Wind: WNW @ 10G17 kts
Sea-level pressure: 1000.1 mb; 29.53 in. Hg: falling unsteadily
Visibility: 12 miles, hazy
6-hr Max temp: 57F
6-hr Min temp: 50F
24-hr Precip: Trace
BHO SA 1155 80 SCT 12 001/57/48/3010G17/953/ FEW SC ALQDS K LYR ALF
HAZY/ 8/551 52008 10057 20050
10 A.M.
Weather: Broken cumulus, few stratocumulus all quadrants, thin smoke
layer aloft
Temperature: 61F; Dew Point: 46F; Relative Humidity: 64%
Wind: WNW @ 21G23 kts, peak wind NW 29 mph @ 9:13am
Sea-level pressure: 1000.3 mb; 29.54 in. Hg: decreasing steadily
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E40 BKN 50 BKN 30 003/61/46/3221G23/954/ FEW SC ALQDS THN
K LYR ALF HAZY PK WND 3129/13/ 8/250 57002
1 P.M.
Weather: Broken cumulus, broken stratocumulus, broken altocumulus
Temperature: 61F; Dew Point: 49F; Relative Humidity: 66%
Wind: NW @ 7 kts
Sea-level pressure: 1000.5 mb; 29.55 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 61F
6-hr Min temp: 50F
6-hr Precip: 0.00 inches
BHO SA 1755 E40 BKN 50 BKN 65 BKN 40 010/61/49/3007/956/ HAZY/ 8/850
53007 10061 20050
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SUMMARY FOR TUESDAY, JUNE 6, 2023
TEMPERATURE (DEGREES F)
MAX…….72 NORMAL…..72
MIN…….50 NORMAL…..55
MEAN……61 NORMAL…..63
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………-2
TOTAL DEPARTURE FOR THE MONTH………………..-21 [-3.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….4 DEPARTURE……..+0
TOTAL HEATING UNITS FOR THE MONTH……………50 DEPARTURE…….+24
TOTAL HEATING UNITS FOR THE SEASON…………5246 DEPARTURE……-924
TOTAL HEATING UNITS LAST SEASON TO DATE…….5589 DEPARTURE……-343
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH……………14 DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE SEASON…………..45 DEPARTURE……..+5
TOTAL COOLING UNITS LAST SEASON TO DATE………63 DEPARTURE…….-18
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)……….E25 NNW @ 02:05 P.M.
VECTOR #1 (1-Sec)……….25 NNW @ 02:05 P.M.
VECTOR #2 (1-Sec)……….27 NNW @ 02:15 P.M.
DAVIS #1……………….25 NW @ 02:15 P.M.
DAVIS #2 ………………20 N @ 01:40 A.M.
RMY #1 (Instantaneous)…..26 NNW @ 02:05 P.M.
RMY #2 (Instantaneous)…..26 NNW @ 02:15 P.M.
MERLIN…………………25 NW
RICHARDS (C5C) (Inst)……25 @ 02:05 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 NW @ 02:19 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..18 @ 02:17 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 @ 02:17 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 NW @ 02:17 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 N @ 01:42 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 NW @ 02:17 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 NNW @ 02:17 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………18 @ 02:17 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……….9.3 WNW [223 total miles]
VECTOR #1………………..9.6
VECTOR #2……………….10.5
DAVIS #1…………………9.3 WNW
DAVIS #2…………………7.8 N
RMY #1…………………..9.2 WNW
RMY #2………………….10.3 NW
RICHARDS (C5C)……………9.6
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..0.94 DEPARTURE…..-0.02
TOTAL PRECIPITATION FOR THE YEAR…………..21.69 DEPARTURE…..-1.87
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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 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/-02/…/…/.. 31 NNW VEC1 31 NNW RMY 26 TSTM
6/7 The low since midnight is 50F, the daily normal low is 55F
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 7
HIGH 93F IN 1999
LOW 40F IN 1932
PRECIP 4.01 INS IN 2006
PEAK GUST 58 MPH NE IN 1982
RECORDS FOR JUNE 8
HIGH 94F IN 1984
LOW 37F IN 1932
PRECIP 1.11 INS IN 1923
PEAK GUST 86e MPH WNW IN 1946 [Record for month]
TODAY’S REPORT PREPARED BY: Amanda Joly
