Friday, August 11, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, AUGUST 11, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0447E
SUNSET: 1851E
MAINLY SUNNY, WARM, AND BREEZY WITH LOWERING HUMIDITY…
Sunshine has been the theme today with clear skies this
morning becoming decorated with some fair weather cumulus
clouds this afternoon. Temperatures have warmed into the
upper 70s and low 80s across the area with a brisk westerly
wind helping to dry out the air.
As mentioned, the humidity level has been gradually easing
today with the dew point dropping from the mid 60s this
morning to the upper 50s early this afternoon.
The wind has been on the busy side with an average speed of
around 13mph and frequent gusts between 25-30mph. The peak
gust so far for the day is 36mph, occurring at 12:33pm.
Visibility has been gradually improving as the day moves on.
We started with 30 miles early this morning, but it’s now
around 50 miles early this afternoon.
The maximum temperature so far today is 78F, which is 3
degrees below the normal high of 81F. The minimum temperature
today is 63F, which is equal to the normal low of 63F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Clear
Temperature: 65F; Dew Point: 62F; Relative Humidity: 90%
Wind: W @ 11G18 kts
Sea-level pressure: 1005.3 mb; 29.69 in. Hg: rising unsteadily
Visibility: 30 miles, thin fog
6-hr Max temp: 66F
6-hr Min temp: 63F
24-hr Precip: 0.09 ins.
BHO SA 1155 CLR 30 053/65/62/2811G18/969/ THN F ALQDS/
8/000 52028 70009 10066 20063
10 A.M.
Weather: Clear, few cumulus all quadrants, few cirrus distant SSW-SW
Temperature: 73F; Dew Point: 60F; Relative Humidity: 63%
Wind: W @ 14G28 kts, peak wind WNW 35mph at 9:43 A.M.
Sea-level pressure: 1006.1 mb; 29.71 in. Hg: rising, then more slowly
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 40 061/73/60/2714G28/971/ FEW CU ALQDS
FEW CI DSNT SSW-SW HAZY PK WND 2930/43/ 8/201 51008
1 P.M.
Weather: Broken cumulus
Temperature: 77F; Dew Point: 58F; Relative Humidity: 51%
Wind: W @ 19G30 kts, peak wind W 36 mph at 12:33 P.M.
Sea-level pressure: 1006.8mb; 29.73 in. Hg: rising, then more slowly
Visibility: 50 miles, hazy
6-hr Max temp: 78F
6-hr Min temp: 65F
6-hr Precip: 0.00 inches
BHO SA 1755 E55 BKN 50 068/77/58/2819G30/973/ HAZY PK WND 2631/33/
8/200 51007 10078 20065
————————————————————–
SUMMARY FOR THURSDAY, AUGUST 10, 2023
TEMPERATURE (DEGREES F)
MAX…….83 NORMAL…..81
MIN…….64 NORMAL…..63
MEAN……74 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+2
TOTAL DEPARTURE FOR THE MONTH…………………-18 [-2.0 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……..-2
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-9
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….9 DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE MONTH……………59 DEPARTURE…….-19
TOTAL COOLING UNITS FOR THE SEASON………….481 DEPARTURE…….+17
TOTAL COOLING UNITS LAST SEASON TO DATE……..661 DEPARTURE……-180
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)……….E28 SSW @ 03:04 P.M.
VECTOR #1 (1-Sec)……….27 SSW @ 03:04 P.M.
VECTOR #2 (1-Sec)……….28 SSW @ 03:03 P.M.
DAVIS #1……………….28 S @ 10:58 P.M.
DAVIS #2 ………………30 S @ 09:16 P.M.
RMY #1 (Instantaneous)…..28 SSW @ 09:05 P.M.
RMY #2 (Instantaneous)…..29 SSW @ 03:03 P.M.
MERLIN…………………25 SW
RICHARDS (C5C) (Inst)……26 @ 09:05 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 SSW @ 08:56 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 @ 09:18 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21 @ 03:05 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 S @ 09:18 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 S @ 08:24 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 SSW @ 09:18 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 SSW @ 03:05 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………18 @ 09:18 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.4 SSW [298 total miles]
VECTOR #1………………12.5
VECTOR #2………………13.1
DAVIS #1……………….12.4 SW
DAVIS #2……………….13.0 SW
RMY #1…………………12.0 SW
RMY #2…………………13.1 SW
RICHARDS (C5C)………….12.0
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.09 DEPARTURE…..-0.04
TOTAL PRECIPITATION FOR THE MONTH…………..0.70 DEPARTURE…..-0.62
TOTAL PRECIPITATION FOR THE YEAR…………..35.47 DEPARTURE…..+3.45
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
8/1 76/58/67/-6/0.00/763/88 24 NW VEC1 24 NW RMY 24
8/2 75/54/65/-8/0.00/830/96 23 SSW VEC1 22 SSW RMY 23
8/3 79/59/69/-4/0.00/725/84 32 SSW VEC1 34 SSW RMY 34
8/4 77/62/70/-3/T/172/20 29 SSW VEC1 29 SSW RMY 29
8/5 83/66/75/+2/0.00/523/61 18 NW VEC1 16 WNW RMY 17
8/6 82/60/71/-2/0.00/839/98 20 W VEC1 19 W RMY 19
8/7 72/65/69/-4/0.14/034/04 29 SSE VEC1 30 SSE RMY 29
8/8 82/68/75/+3/0.47/187/22 39 S VEC1 42 S RMY 42
8/9 82/66/74/+2/0.00/756/89 39 WNW VEC1 38 WNW RMY 38
8/10 83/64/74/+2/0.02/254/30 28 SSW VEC1 27 SSW RMY 28
8/11 The low since midnight is 63F, the daily normal low is 63F
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR AUGUST 11
HIGH 97F IN 1944
LOW 49F IN 1972
PRECIP 3.13 INCHES IN 1990
PEAK GUST 44 MPH SW IN 1971
RECORDS FOR AUGUST 12
HIGH 99F IN 1944
LOW 48F IN 1930
PRECIP 1.89 INCHES IN 1979
PEAK GUST 50 MPH NE IN 1983
TODAY’S REPORT PREPARED BY: Matt Douglas
