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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, JULY 14, 2024
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0420E
SUNSET: 1919E
MOSTLY CLOUDY WITH HUMIDITY DROPPING OFF MOVING INTO THE AFTERNOON….
We observed 40 miles of visibility on average with mostly cloudy
skies and light and variable wind. The wind has picked up slightly,
but only to about 8 mph on average. Conditions were humid this
morning with dew points in the low 70’s, but have dried out a
little bit with a dew point in the mid 60’s by 1 PM.
Rainfall since yesterday morning amounted to 0.64 inches, bringing
us to an inch for the monthly total and 36.81 inches for the year.
That works out to an 8.13 inch surplus as we make our way into
mid July!
The maximum temperature so far today is 86F, which is 4 degrees
above the normal high of 82F. The minimum temperature since
midnight is 69F, which is 5 degrees above the normal low of 64F.
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Today’s Observations:
7 A.M.
Weather: Scattered cirrus, few altocumulus W-N
Temperature: 74F; Dew Point: 71F; Relative Humidity: 90%
Wind: NW @ 3 kts, light and variable
Sea-level pressure: 1017.9 mb; 30.06 in. Hg: rising, then steady
Visibility: 40 miles, hazy
6-hr Max temp: 74F
6-hr Min temp: 69F
24-hr Precip: 0.64 inches
BHO SA 1155 220 SCT 40 179/74/71/3103/006/ FEW AC W-N THN F ALQDS WND L/V/
8/081 51006 70064 10074 20069
10 A.M.
Weather: Scattered cumulus
Temperature: 82F; Dew Point: 68F; Relative Humidity: 63%
Wind: WNW @ 2 kts, light and variable
Sea-level pressure: 1017.4 mb; 30.05 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 40 SCT 40 174/82/68/3002/005/ HAZY WND L/V/ 8/200 58005
1 P.M.
Weather: Scattered cumulus
Temperature: 86F; Dew Point: 65F; Relative Humidity: 50%
Wind: W @ 9 kts
Sea-level pressure: 1015.4 mb; 29.99 in. Hg: falling unsteadily
Visibility: 40 miles, hazy
6-hr Max temp: 86F
6-hr Min temp: 74F
6-hr Precip: 0.00 inches
BHO SA 1755 40 SCT 40 154/86/65/2709/999/ HAZY/ 8/200 56020 10086 20074
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SUMMARY FOR SATURDAY, JULY 13, 2024
TEMPERATURE (DEGREES F)
MAX…….80 NORMAL…..82
MIN…….72 NORMAL…..64
MEAN……76 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+3
TOTAL DEPARTURE FOR THE MONTH…………………….+51 [+3.7 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……..-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 2024 THRU DEC 2024)
TOTAL COOLING UNITS FOR YESTERDAY……………11 DEPARTURE……..+3
TOTAL COOLING UNITS FOR THE MONTH…………..145 DEPARTURE…….+48
TOTAL COOLING UNITS FOR THE SEASON………….323 DEPARTURE…….+87
TOTAL COOLING UNITS LAST SEASON TO DATE……..252 DEPARTURE…….+71
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)……….E28 SW @ 12:02 A.M.
VECTOR #1 (1-Sec)……….25 SW @ 12:01 A.M.
VECTOR #2 (1-Sec)……….26 SW @ 12:38 A.M.
DAVIS #1……………….23 SW @ 12:02 A.M.
DAVIS #2 ………………24 SW @ 12:38 A.M.
RMY #1 (Instantaneous)…..26 SW @ 12:46 A.M.
RMY #2 (Instantaneous)…..26 SW @ 12:40 A.M.
MERLIN…………………21 SW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 SW @ 12:42 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..17 @ 12:03 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 12:40 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 S @ 01:57 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 SW @ 12:39 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 SW @ 12:40 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 SW @ 12:44 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….9.9 SSW [237 total miles]
VECTOR #1…………….10.3
VECTOR #2…………….10.8
DAVIS #1………………9.8 SSW
DAVIS #2……………..10.6 SW
RMY #1……………….10.2 SSW
RMY #2……………….10.9 SW
RICHARDS (C5C)…………OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.64 DEPARTURE…..+0.52
TOTAL PRECIPITATION FOR THE MONTH…………..1.13 DEPARTURE…..-0.32
TOTAL PRECIPITATION FOR THE YEAR (2024)…….36.81 DEPARTURE…..+8.13
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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/…/…/.. 32 SW VEC1 32 SW RMY 32
7/13 80/72/76/+3/…./…/.. 28 SW VEC1 25 SW RMY 26
7/14 The low since midnight is 69F, 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 14
HIGH 98F IN 1952
LOW 51F IN 1895, 1937
PRECIP 2.28 INS IN 1948
WIND 110e MPH NW IN 1942 [THUNDERSTORM GUST; RECORD FOR MONTH]
RECORDS FOR JULY 15
HIGH 94F IN 1995
LOW 50F IN 1929, 1930
PRECIP 1.64 INS IN 1896
WIND 71 MPH WNW IN 2002
TODAY’S REPORT PREPARED BY: Benjamin Turner
