Monday, July 22, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, JULY 22, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0427E
SUNSET: 1913E
WARM AND HUMID WITH INCREASING CLOUDINESS AND VERY LIGHT WIND….
We started the day with plenty of sunshine, however high clouds
have increased and thickened as we moved into the early afternoon
hours. The clouds have thickened enough that the sun is now very
much filtered.
Despite the increasing clouds, the temperature remains on the
warm side with values into the low 80s. The dew point however has
been increasing, as such it’s starting to feel more humid out
there this afternoon. The dew point has risen from the low 60s
early this morning to the upper 60s early this afternoon.
The wind has been on the light side again today with an average
speed of only around 5mph. The peak gust for the day so far is
a measly 12mph, which occurred just after noon time.
Visibility has been limited today, and actually decreasing.
The view was around 40 miles early this morning, but dropped
to around 30 miles by late this morning, where it still stands
into early this afternoon.
The maximum temperature so far today is 83F, which is 1 degree
above the normal high of 82F. The minimum temperature since
midnight is 66F, which is 2 degrees above the normal low of 64F.
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Today’s Observations:
7 A.M.
Weather: Thin broken cirrus
Temperature: 72F; Dew Point: 62F; Relative Humidity: 69%
Wind: ENE @ 5 kts, wind light
Sea-level pressure: 1020.1 mb; 30.12 in. Hg: rising, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 72F
6-hr Min temp: 66F
24-hr Precip: 0.00 inches
BHO SA 1155 250 -BKN 40 201/72/62/0705/012/ HAZY WND LGT/
8/001 53010 10072 20066
10 A.M.
Weather: Broken cirrus, few cumulus distant SE-S
Temperature: 80F; Dew Point: 64F; Relative Humidity: 58%
Wind: SE @ 2 kts, wind light
Sea-level pressure: 1020.0 mb; 30.12 in. Hg: rising, then falling
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 250 BKN 30 200/80/64/1402/012/ FEW CU DSNT SE-S HAZY
WND LGT/ 8/204 58001
1 P.M.
Weather: Broken cumulus, overcast cirrostratus
Temperature: 82F; Dew Point: 68F; Relative Humidity: 65%
Wind: ENE @ 2 kts, wind light and variable
Sea-level pressure: 1019.0 mb; 30.09 in. Hg: falling, then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 83F
6-hr Min temp: 72F
6-hr Precip: 0.00 inches
BHO SA 1755 E60 BKN 200 OVC 30 190/82/68/0702/009/ HAZY WND L/V/
8/207 56010 10083 20072
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SUMMARY FOR SUNDAY, JULY 21, 2024
TEMPERATURE (DEGREES F)
MAX…….86 NORMAL…..82
MIN…….68 NORMAL…..64
MEAN……77 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+4
TOTAL DEPARTURE FOR THE MONTH…………………….+89 [+4.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-5
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY……………12 DEPARTURE……..+3
TOTAL COOLING UNITS FOR THE MONTH…………..247 DEPARTURE…….+83
TOTAL COOLING UNITS FOR THE SEASON………….425 DEPARTURE……+122
TOTAL COOLING UNITS LAST SEASON TO DATE……..332 DEPARTURE…….+93
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated
F420C (Official)……….E18 WSW @ 01:53 A.M.
VECTOR #1 (1-Sec)……….18 WSW @ 01:53 A.M.
VECTOR #2 (1-Sec)……….18 NW @ 12:38 P.M.
DAVIS #1……………….18 WSW @ 01:53 A.M.
DAVIS #2 ………………17 NW @ 12:38 P.M.
RMY #1 (Instantaneous)…..18 W @ 12:09 A.M.
RMY #2 (Instantaneous)…..18 NW @ 12:38 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………11 W @ 01:39 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..12 @ 01:46 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13 @ 02:01 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 WSW @ 01:15 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………13 WNW @ 02:01 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 NW @ 12:47 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..13 WNW @ 02:01 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….5.3 WNW [127 total miles]
VECTOR #1……………..6.2
VECTOR #2……………..6.3
DAVIS #1………………5.9 WNW
DAVIS #2………………5.7 WNW
RMY #1………………..5.9 WNW
RMY #2………………..6.2 WNW
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..2.12 DEPARTURE…..-0.21
TOTAL PRECIPITATION FOR THE YEAR (2024)…….37.80 DEPARTURE…..+8.24
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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 77/63/70/-1/0.07/722/79 29 N VEC1 27 N RMY 28 TSTM
7/2 80/60/70/-1/0.00/886/97 20 N VEC1 20 N RMY 19
7/3 84/62/73/+1/0.00/856/94 25 S VEC1 25 S RMY 26
7/4 85/62/74/+2/0.04/392/43 28 SSW VEC1 28 SSW RMY 28
7/5 84/68/76/+4/0.22/146/16 29 SSW VEC1 29 SSW RMY 29
7/6 77/71/74/+2/0.10/009/01 31 SW VEC1 33 SSW RMY 33
7/7 88/72/80/+8/0.00/345/38 15 SW VEC1 15 SW RMY 14
7/8 91/71/81/+9/0.00/780/86 17 NW VEC1 18 NW RMY 18
7/9 88/72/80/+7/T/534/59 26 SSW VEC1 27 SSW RMY 29
7/10 88/72/80/+7/0.00/552/61 38 SSW VEC1 37 SSW RMY 38
7/11 87/71/79/+6/0.01/470/52 41 SSW VEC1 40 SSW RMY 41
7/12 85/69/77/+4/0.05/478/53 32 SW VEC1 32 SW RMY 32
7/13 80/72/76/+3/0.64/234/26 28 SW VEC1 25 SW RMY 26
7/14 88/69/79/+6/0.00/809/90 18 SW VEC1 18 SW RMY 19
7/15 92/70/81/+8/0.07/539/60 28 WSW VEC1 27 WSW RMY 28 TSTM
7/16 92/72/82/+9/T/797/89 33 SW VEC1 34 SW RMY 34
7/17 89/71/80/+7/0.37/599/67 38 W VEC1 36 W RMY 37 TSTM
7/18 85/68/77/+4/0.55/429/48 37 W VEC1 37 W RMY 38 TSTM
7/19 82/61/72/-1/0.00/864/97 24 N VEC1 24 NNW RMY 23
7/20 85/63/74/+1/T/747/84 30 WSW VEC1 31 WSW RMY 32
7/21 86/68/77/+4/T/…/.. 18 WSW VEC1 18 WSW RMY 18
7/22 The low since midnight is 66F, the daily normal low is 64F.
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JULY DAILY RECORDS TO DATE
NONE.
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JULY 22
HIGH 99F IN 1926, 2011
LOW 52F IN 1890
PRECIP 1.73 INS IN 1887
PEAK GUST 55 MPH IN 1983
RECORDS FOR JULY 23
HIGH 99F IN 1952
LOW 51F IN 1923,1977
PRECIP 1.82 INS IN 1953
PEAK GUST 54e MPH S IN 1946
TODAY’S REPORT PREPARED BY: Matt Douglas
