Saturday, August 12, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, AUGUST 12, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0448E
SUNSET: 1850E
BEAUTIFUL PARTLY CLOUDY DAY WITH GOOD VISIBILITY…
Today has been beautiful with changing clouds and excellent
visibility with low humidity. Mount Monadnock has been very
stark in the distance with limited haze all day. Wind has been
on the lighter side, with a peak gust of only up to about 19
miles per hour with nearly stagnant wind during the 6 o’clock
hour this morning.
Our high temperature today so far has been 84F, three degrees
above our normal max temperature of 80F, and our low since
midnight was 61F, 2 degrees below our normal low temperature of
63F.
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Today’s Observations:
7 A.M.
Weather: Scattered cirrus
Temperature: 69F; Dew Point: 55F; Relative Humidity: 52%
Wind: E @ 2 kts, Wind light and variable
Sea-level pressure: 1014.3 mb; 29.95 in. Hg: rising, then more quickly
Visibility: 80 miles
6-hr Max temp: 69F
6-hr Min temp: 61F
24-hr Precip: 0.00 ins.
BHO SA 1155 250 SCT 80 143/69/55/0902/995/WND L/V/ 8/003 53012
10069 20061
10 A.M.
Weather: Scattered altocumulus, scattered cirrus
Temperature: 78F; Dew Point: 55F; Relative Humidity: 45%
Wind: SSW @ 4 kts, Wind light
Sea-level pressure: 1014.1 mb; 29.95 in. Hg: falling, then more quickly
Visibility: 80 miles
3-hr Precip: 0.00 inches
BHO SA 1455 160 SCT 250 SCT 80 141/78/55/2104/995/ WND LGT/ 8/086
58002
1 P.M.
Weather: Scattered cumulus, scattered cirrocumulus
Temperature: 81F; Dew Point: 59F; Relative Humidity: 47%
Wind: S @ 7 kts
Sea-level pressure: 1012.8 mb; 29.91 in. Hg: falling unsteadily
Visibility: 80 miles
6-hr Max temp: 81F
6-hr Min temp: 59F
6-hr Precip: 0.00 inches
BHO SA 1755 60 SCT 250 SCT 80 128/81/59/1807/991/ 8/809 57013 10084
20069
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SUMMARY FOR FRIDAY, AUGUST 11, 2023
TEMPERATURE (DEGREES F)
MAX…….80 NORMAL…..81
MIN…….63 NORMAL…..63
MEAN……72 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………..0
TOTAL DEPARTURE FOR THE MONTH…………………-18 [-1.8 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…………….7 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH……………66 DEPARTURE…….-19
TOTAL COOLING UNITS FOR THE SEASON………….488 DEPARTURE…….+16
TOTAL COOLING UNITS LAST SEASON TO DATE……..668 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)……….E35 W @ 12:33 P.M.
VECTOR #1 (1-Sec)……….37 W @ 12:33 P.M.
VECTOR #2 (1-Sec)……….37 W @ 12:17 P.M.
DAVIS #1……………….35 W @ 12:31 P.M.
DAVIS #2 ………………35 W @ 01:34 P.M.
RMY #1 (Instantaneous)…..38 W @ 12:33 P.M.
RMY #2 (Instantaneous)…..36 W @ 01:34 P.M.
MERLIN…………………34 W
RICHARDS (C5C) (Inst)……35 @ 12:41 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 W @ 11:08 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..25 @ 12:41 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..27 @ 03:59 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………26 W @ 12:42 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 WNW @ 03:59 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..24 W @ 11:08 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 W @ 03:59 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………25 @ 12:41 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..13.4 WNW [321 total miles]
VECTOR #1………………13.1
VECTOR #2………………14.1
DAVIS #1……………….13.7 W
DAVIS #2……………….13.9 WNW
RMY #1…………………12.4 WNW
RMY #2…………………13.8 WNW
RICHARDS (C5C)………….13.2
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..0.70 DEPARTURE…..-0.75
TOTAL PRECIPITATION FOR THE YEAR…………..35.47 DEPARTURE…..+3.32
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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 80/63/72/+0/0.00/…/.. 35 W VEC1 37 W RMY 38
8/12 The low since midnight is 61F, the daily normal low is 63F
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
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
RECORDS FOR AUGUST 13
HIGH 98F IN 1944, 2002
LOW 47F IN 1902, 1957
PRECIP 2.92 INCHES IN 1989
PEAK GUST 52 MPH SSE IN 1963
TODAY’S REPORT PREPARED BY: Samantha Richard
