Tuesday, July 11, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, JULY 11, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0417E
SUNSET: 1922E
A MIX OF SUN AND CLOUDS TODAY WITH A WARM BREEZE….
Finally a day that didn’t start with fog, nor a wind off the
ocean! Sunshine has been fairly dominant today with only a
few clouds of varying amounts and types through the day. A
thin smoke layer has also returned aloft.
Temperatures have warmed into the low to mid 80s early this
afternoon. The dew point remains on the high side with values
in the mid 60s, so it still feels a bit sticky out there, but
there is at least a nice breeze blowing today.
As mentioned, the wind has been busier than in recent days.
The average speed so far for the day is around 11mph. The peak
gust so far is around 25mph.
Visibility has been very good today with 50- 60 miles being
seen all day!
The maximum temperature so far today is 83F, this is 1 degree
above the normal high of 82F. The minimum since midnight is 62F,
which is 2 degrees below the normal low of 64F.
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus/Castellanus, thin scattered cirrus,
few stratus fractus all quadrants, few stratocumulus all quadrants
Temperature: 66F; Dew Point: 64F; Relative Humidity: 93%
Wind: W @ 9G18 kts
Sea-level pressure: 1010.1 mb; 29.83 in. Hg: rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 66F
6-hr Min temp: 62F
24-hr Precip: 0.66 inches
BHO SA 1155 60 SCT 250 -SCT 60 101/66/64/2809G18/983/
FEW STFRA ALQDS FEW SC ALQDS/ 8/581 51012 70066 10066 20062
10 A.M.
Weather: Scattered stratocumulus, scattered altocumulus,
thin broken cirrus
Temperature: 75F; Dew Point: 66F; Relative Humidity: 74%
Wind: WNW @ 12G20 kts
Sea-level pressure: 1010.6 mb; 29.84 in. Hg: rising, then steady
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 35 SCT 60 SCT 300 -BKN 60 106/75/66/2912G20/984/
8/551 51005
1 P.M.
Weather: Clear, few small cumulus all quadrants, few altocumulus
distant E-SE, few cirrus distant E-SE, thin smoke layer aloft
all quadrants
Temperature: 82F; Dew Point: 65F; Relative Humidity: 56%
Wind: WNW @ 9G18 kts
Sea-level pressure: 1010.3mb; 29.83 in. Hg: rising, then falling
Visibility: 50 miles, hazy
6-hr Max temp: 83F
6-hr Min temp: 66F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 50 103/82/65/3009G18/983/ FEW SML CU ALQDS
FEW AC DSNT E-SE FEW CI DSNT E-SE THN K LYR ALF ALQDS HAZY/
8/151 58003 10083 20066
————————————————————–
SUMMARY FOR MONDAY, JULY 10, 2023
TEMPERATURE (DEGREES F)
MAX…….71 NORMAL…..82
MIN…….66 NORMAL…..64
MEAN……69 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-4
TOTAL DEPARTURE FOR THE MONTH…………………+16 [+1.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-3
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-3
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….4 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE MONTH……………86 DEPARTURE…….+13
TOTAL COOLING UNITS FOR THE SEASON………….214 DEPARTURE……..+2
TOTAL COOLING UNITS LAST SEASON TO DATE……..230 DEPARTURE…….-16
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)……….E22 ESE @ 11:28 A.M.
VECTOR #1 (1-Sec)……….21 ESE @ 10:37 A.M.
VECTOR #2 (1-Sec)……….21 ESE @ 11:26 A.M.
DAVIS #1……………….20 ESE @ 10:55 A.M.
DAVIS #2 ………………20 ESE @ 11:26 A.M.
RMY #1 (Instantaneous)…..22 ESE @ 10:37 A.M.
RMY #2 (Instantaneous)…..22 ESE @ 10:38 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……21 @ 10:37 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 ESE @ 11:29 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 11:28 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 10:38 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 ESE @ 11:29 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 ESE @ 10:39 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 ESE @ 11:28 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 ESE @ 10:38 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 @ 11:28 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………..7.9 ESE [189 total miles]
VECTOR #1…………………8.1
VECTOR #2…………………8.2
DAVIS #1………………….8.1 SE
DAVIS #2………………….8.1 SE
RMY #1……………………8.0 SE
RMY #2……………………8.2 SE
RICHARDS (C5C)…………….8.6
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.66 DEPARTURE…..+0.54
TOTAL PRECIPITATION FOR THE MONTH…………..2.23 DEPARTURE…..+1.13
TOTAL PRECIPITATION FOR THE YEAR…………..27.41 DEPARTURE…..-0.92
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
7/1 80/61/71/0/0.00/567/62 17 SSE VEC1 16 SSE RMY 17
7/2 74/63/69/-2/0.34/027/03 35 S VEC1 35 S RMY 35
7/3 79/63/72/-1/0.40/265/29 18 NNW VEC1 18 NNW RMY 17 TSTM
7/4 71/65/68/-4/0.81/000/00 17 NE VEC1 18 NE RMY 17 TSTM
7/5 88/66/77/+5/0.00/…/.. 17 S VEC1 16 SE RMY 15
7/6 92/69/81/+9/0.00/…/.. 23 SSW VEC1 22 SSW RMY 23
7/7 87/70/78/+6/0.00/…/.. 23 SW VEC1 22 SW RMY 23
7/8 84/70/77/+5/0.00/…/.. 20 W VEC1 20 W RMY 19
7/9 81/69/75/+2/T/…/.. 17 ESE VEC1 18 E RMY 17
7/10 71/66/69/-4/0.68/…/.. 22 ESE VEC1 21 ESE RMY 22
7/11 The low since midnight is 62, the daily normal low is 64F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JULY 11
HIGH 98F IN 1911
LOW 49F IN 1890
PRECIP 1.87 INS IN 1959
WIND 53 MPH NW IN 1988
RECORDS FOR JULY 12
HIGH 96F IN 1908
LOW 48F IN 1945
PRECIP 1.43 INS IN 1975
WIND 48e MPH SSW IN 1944
TODAY’S REPORT PREPARED BY: Matt Douglas
