Thursday, July 25, 2024
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, JULY 25, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0430E
SUNSET: 1911E
CLOUDS CONTINUE TO DOMINATE, BUT WARMER AND MORE HUMID TODAY….
Today has once again featured plenty of cloud cover after early
morning dense fog burned off. The sun is trying to shine through
the clouds, and is dimly visible early this afternoon. So far
there has been no rainfall, but a line of showers and
thunderstorms are developing off the west. We’ll see if any of
that activity reaches Blue Hill later this afternoon.
Despite the cloud cover, temperatures are warmer than they have
been the past couple of days. Readings have reached the upper
70s by early this afternoon. The dew point is also rising with
values reaching the low 70s, as such it feels quite muggy out
there, especially compared to the last couple of days.
The wind is a little stronger than it’s been the past few days.
The average speed so far for the day is around 7mph, but it has
been averaging closer to 10mph for the past couple of hours. The
peak gust for the day so far is 20mph, which occurred during
the 1pm observation.
Visibility has improved since early this morning, when it was
under 1/4 miles. By early this afternoon its up to around 30
miles with general haziness taking over following the fog.
The maximum temperature so far today is 79F, which is 3
degrees below the normal high of 82F. The minimum temperature
since midnight is 65F, which is 1 degree above the normal low
of 64F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft
Temperature: 68F; Dew Point: 68F; Relative Humidity: 100%
Wind: SSW @ 7 kts
Sea-level pressure: 1018.5 mb; 30.08 in. Hg: falling, then rising
Visibility: 1/8 mile, fog
6-hr Max temp: 68F
6-hr Min temp: 65F
24-hr Precip: 0.02 inches
BHO SA 1155 X W2 1/8F 185/68/68/2107/008/ 8//// 55003 70002 10068 20065
10 A.M.
Weather: Broken stratocumulus, overcast altostratus
Temperature: 73F; Dew Point: 70F; Relative Humidity: 89%
Wind: SW @ 7 kts
Sea-level pressure: 1018.1 mb; 30.06 in. Hg: falling, then steady
Visibility: 25 miles, thin fog
3-hr Precip: 0.00 inches
BHO SA 1455 E12 BKN 50 OVC 25 181/73/70/2307/006/ THN F ALQDS/ 8/52/
56004
1 P.M.
Weather: Broken cumulus, broken cirrocumulus, overcast cirrus,
sun dimly visible
Temperature: 78F; Dew Point: 72F; Relative Humidity: 81%
Wind: SW @ 9G17 kts
Sea-level pressure: 1015.7 mb; 29.99 in. Hg: falling, then more rapidly
Visibility: 30 miles, hazy
6-hr Max temp: 79F
6-hr Min temp: 68F
6-hr Precip: 0.00 inches
BHO SA 1755 E20 BKN 180 OVC 250 30 157/78/72/2309G17/999/
SUN DMLY VSBL HAZY/ 8/209 58024 10079 20068
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SUMMARY FOR WEDNESDAY, JULY 24, 2024
TEMPERATURE (DEGREES F)
MAX…….70 NORMAL…..82
MIN…….64 NORMAL…..64
MEAN……67 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-6
TOTAL DEPARTURE FOR THE MONTH…………………….
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……..-6
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-6
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY…………….2 DEPARTURE……..-7
TOTAL COOLING UNITS FOR THE MONTH…………..264 DEPARTURE…….+74
TOTAL COOLING UNITS FOR THE SEASON………….442 DEPARTURE……+113
TOTAL COOLING UNITS LAST SEASON TO DATE……..361 DEPARTURE…….+81
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)……….E16 ESE @ 07:11 A.M.
VECTOR #1 (1-Sec)……….16 ESE @ 04:12 A.M.
VECTOR #2 (1-Sec)……….17 ESE @ 04:11 A.M.
DAVIS #1……………….15 ESE @ 04:12 A.M.
DAVIS #2 ………………16 ESE @ 04:11 A.M.
RMY #1 (Instantaneous)…..15 ESE @ 04:12 A.M.
RMY #2 (Instantaneous)…..16 ESE @ 04:11 A.M.
MERLIN…………………15 SE
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………..
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..12 @ 04:13 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..12 @ 04:12 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………12 ESE @ 04:13 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………12 ESE @ 04:12 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 ESE @ 04:13 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..12 ESE @ 04:11 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….5.1 ENE [123 total miles]
VECTOR #1……………..5.5
VECTOR #2……………..5.9
DAVIS #1………………5.4 ESE
DAVIS #2………………5.4 ESE
RMY #1………………..5.5 E
RMY #2………………..5.9 E
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.09
TOTAL PRECIPITATION FOR THE MONTH…………..2.23 DEPARTURE…..-0.43
TOTAL PRECIPITATION FOR THE YEAR (2024)…….37.91 DEPARTURE…..+8.02
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PRELIMINARY CLIMATE SUMMARY FOR JULY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(
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/630/71 18 WSW VEC1 18 WSW RMY 18
7/22 83/66/75/+2/T/452/51 24 SSW VEC1 23 SSW RMY 23
7/23 75/65/70/-3/0.02/027/03 17 ESE VEC1 17 SSE RMY 17
7/24 70/64/67/-6/0.09/009/01 16 ESE VEC1 16 ESE RMY 15
7/25 The low since midnight is 65F, 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 25
HIGH 96F IN 2016
LOW 51F IN 1901,1953
PRECIP 2.25 INS IN 1990
PEAK GUST 88 MPH NW IN 1972
RECORDS FOR JULY 26
HIGH 97F IN 1963
LOW 47F IN 1920
PRE 2.05 INS IN 1899
WIND 74e MPH NNW IN 1940
TODAY’S REPORT PREPARED BY: Matt Douglas
