Saturday, July 1, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, JULY 1, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0411E
SUNSET: 1925E
HAZINESS DUE TO WILDFIRE SMOKE CONTINUES TODAY, SIGNIFICANTLY
RESTRICTING VISIBILITY HERE AT BLUE HILL…
The morning started with dense fog, which limited the visibility
to between 1/8 to 1/2 of a mile for a while. The fog burned off
by mid morning, but the visibility only improved to around 6
miles, and this restriction was due to haze. The haziness is
a direct result of Canadian wildfire smoke returning to the
New England area.
Otherwise mainly sunny skies has been the theme once the fog
burned off. This has allowed temperatures to warm into the
upper 70s and low 80s across the area. However, a sea-breeze
is keeping temperatures on the lower side closer to the coast.
The dew-point remains in the mid 60s, so it does feel rather
sticky out there again today.
The wind has been light once again today, coming from variable
directions this morning before becoming solidly onshore by early
afternoon. The average speed for the day has only been around
5mph. The highest gust so far for the day has only been around
14mph! Definitely not a good kite flying day.
Visibility has been limited due to dense fog early this morning,
then haziness due to smoke thereafter. The view was generally
under 1/2 mile early, improving to only around 10 miles by early
this afternoon.
The maximum temperature so far today is 80F, this is equal to
the normal high of 80F. The minimum since midnight is 61F, which
is 1 degree below the normal low of 62F.
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PRELIMINARY STATS FOR JUNE 2023
TEMPERATURE, Deg. F
Avg. Max. 73.3 [-2.1]
Avg. Min. 56.2 [-1.4]
Mean 64.8 [-1.7]
24-hour corrected mean: 63.7
Max. for month: 91F on the 2nd
Min. for month: 43F on the 3rd and 4th
HEATING DEGREE DAYS
Total heating units: 99 [+033]
Total for the season: 5295 [-915]
Total for last season: 5610
COOLING DEGREE DAYS
Total cooling units: 97 [-014]
Total for the season: 128 [-011]
Total for last season: 155
PRECIPITATION, Inches
Total: 4.43 [-0.20]
Greatest in 24 hrs: 1.91 on the 17th-18th
SNOWFALL, Inches
Total: 0.0 [0.0]
Greatest in 24 hrs: N/A
WIND, mph
Avg. uncorrected wind speed: 8.5 mph
Avg. corrected wind speed: 9.2 mph
Prevailing wind direction: South-southwest [16%]
Peak gust and direction: 38 S on the 14th, SSE on the 27th
SUNSHINE:
Campbell-Stokes card minutes: 11718 of a possible 26376, or 44%
Astronomical total minutes: 12192 of a possible 27409, or 44%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Sky partially obscured, clear
Temperature: 66F; Dew Point: 65F; Relative Humidity: 96%
Wind: Calm
Sea-level pressure: 1019.8 mb; 30.12 in. Hg: rising, then more rapidly
Visibility: 1/4 mile, 1/8 variable 1/2 mile, fog
6-hr Max temp: 66F
6-hr Min temp: 61F
24-hr Precip: 0.00 inches
BHO SA 1155 -X CLR 1/4F 198/66/65/0000/012/ VSBY 1/8V1/2 WND CALM/
8/600 53006 10066 20061
10 A.M.
Weather: Clear, few cumulus all SE-SW, smoke layer all quadrants
Temperature: 72F; Dew Point: 64F; Relative Humidity: 77%
Wind: ENE @ 4 kts, wind light
Sea-level pressure: 1019.7 mb; 30.11 in. Hg: rising, then falling
Visibility: 6 miles, haze
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 6H 197/72/64/0704/011/ FEW CU SE-SW K LYR ALQDS
WND L/V/ 8/200 58001
1 P.M.
Weather: Thin scattered cirrus, few cumulus all quadrants,
smoke layer all quadrants
Temperature: 78F; Dew Point: 66F; Relative Humidity: 68%
Wind: ENE @ 5 kts, wind light
Sea-level pressure: 1018.4 mb; 30.07 in. Hg: falling, then more rapidly
Visibility: 10 miles, hazy
6-hr Max temp: 80F
6-hr Min temp: 66F
6-hr Precip: 0.00 inches
BHO SA 1755 250 -SCT 10 184/78/66/0705/007/ FEW CU ALQDS K LYR ALQDS
HAZY WND LGT/ 8/201 58013 10080 20066
————————————————————–
SUMMARY FOR FRIDAY, JUNE 30, 2023
TEMPERATURE (DEGREES F)
MAX…….82 NORMAL…..80
MIN…….63 NORMAL…..62
MEAN……73 NORMAL…..71
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+2
TOTAL DEPARTURE FOR THE MONTH………………..-46 [-1.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………99 DEPARTURE…….+33
TOTAL HEATING UNITS FOR THE SEASON…………5295 DEPARTURE……-915
TOTAL HEATING UNITS LAST SEASON TO DATE…….5610 DEPARTURE……-315
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….8 DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE MONTH……………97 DEPARTURE…….-14
TOTAL COOLING UNITS FOR THE SEASON………….128 DEPARTURE…….-11
TOTAL COOLING UNITS LAST SEASON TO DATE……..155 DEPARTURE…….-27
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)……….E18 E @ 12:55 P.M.
VECTOR #1 (1-Sec)……….17 SSE @ 05:03 P.M.
VECTOR #2 (1-Sec)……….17 ESE @ 01:51 P.M.
DAVIS #1……………….17 SE @ 04:59 P.M.
DAVIS #2 ………………19 S @ 06:43 P.M.
RMY #1 (Instantaneous)…..17 SSE @ 05:01 P.M.
RMY #2 (Instantaneous)…..17 ESE @ 01:51 P.M.
MERLIN…………………15 SE
RICHARDS (C5C) (Inst)……16 @ 01:26 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………11 ESE @ 12:59 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..12 @ 05:00 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13 @ 12:56 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 E @ 12:55 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 E @ 12:56 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 E @ 12:54 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..13 E @ 12:56 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………12 @ 12:54 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………..6.2 S [148 total miles]
VECTOR #1…………………6.7
VECTOR #2…………………7.0
DAVIS #1………………….6.3 S
DAVIS #2………………….6.7 S
RMY #1……………………6.6 S
RMY #2……………………7.0 S
RICHARDS (C5C)…………….7.2
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..4.43 DEPARTURE…..-0.20
TOTAL PRECIPITATION FOR THE YEAR…………..25.18 DEPARTURE…..-2.05
————————————————————–
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/582/64 31 NNW VEC1 31 NNW RMY 26 TSTM
6/7 65/50/58/-6/0.00/301/33 28 NW VEC1 29 NW RMY 29
6/8 64/51/58/-6/T/191/21 13 WNW VEC1 13 WNW RMY 10
6/9 64/49/57/-7/0.47/210/23 20 WNW VEC1 21 ESE RMY 20 TSTM
6/10 67/51/59/-6/0.05/365/40 26 WNW VEC1 26 WNW RMY 26 TSTM
6/11 80/55/68/+3/0.00/823/90 23 S VEC1 24 S RMY 24
6/12 79/60/70/+5/0.15/439/48 32 SSE VEC1 33 SSE RMY 31
6/13 78/59/69/+3/0.03/421/46 26 SE VEC1 27 SE RMY 24
6/14 78/57/68/+2/0.06/448/49 38 S VEC1 39 S RMY 39 TSTM
6/15 77/56/67/+1/0.00/559/61 23 WNW VEC1 22 WNW RMY 22
6/16 81/61/71/+4/T/513/56 20 W VEC1 19 SSW RMY 19
6/17 64/55/60/-7/1.86/000/00 21 NE VEC1 21 NE RMY 21
6/18 70/56/63/-4/0.05/321/35 20 WNW VEC1 20 WNW RMY 20
6/19 67/54/61/-7/0.00/284/31 20 SE VEC1 20 SE RMY 18
6/20 71/53/62/-6/T/367/40 20 ESE VEC1 20 ESE RMY 20
6/21 69/53/61/-7/0.00/826/90 20 E VEC1 20 NE RMY 20
6/22 70/58/62/-7/0.01/789/86 22 ENE VEC1 23 NE RMY 22
6/23 80/58/69/+0/0.04/303/33 18 SSW VEC1 19 SSW RMY 19
6/24 77/66/72/+3/0.12/220/24 29 SW VEC1 29 SW RMY 31
6/25 85/67/76/+6/0.00/660/72 21 SSW VEC1 21 S RMY 21 TSTM
6/26 82/66/74/+4/T/385/42 23 S VEC1 27 S RMY 25
6/27 77/65/71/+1/0.38/275/30 38 SSW VEC1 39 SSW RMY 39 TSTM
6/28 78/66/72/+2/0.25/238/26 29 SSW VEC1 29 SSW RMY 28 TSTM
6/29 81/64/73/+2/0.02/494/54 18 S VEC1 21 S RMY 22
6/30 52/63/73/+2/0.00/649/71 18 E VEC1 17 SSE RMY 17
7/1 The low since midnight is 61F, the daily normal low is 62F
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 JULY 1
HIGH 98F IN 1964
LOW 44F IN 1988 [RECORD FOR MONTH]
PRECIP 4.46 INS IN 1915 [RECORD FOR MONTH]
PEAK GUST 52 MPH WNW IN 1974
RECORDS FOR JULY 2
HIGH 95F IN 1963
LOW 47F IN 1988
PRECIP 1.49 INS IN 2021
PEAK GUST 45 MPH SW IN 1999
TODAY’S REPORT PREPARED BY: Matt Douglas
