Cumulonimbus Clouds, Or Thunderheads, Are Most Likely To Form over San Diego County’s deserts and mountains during the latter part of the summer season, beginning around late July. The clouds appear by mid-afternoon — often the result of moist, tropical air entering the county from the south or southeast. If intense, these cloud buildups can be accompanied by enough rain to flood the desert washes and mountain drainages. And when the weather pattern allows the movement of moist air beyond the mountain barriers, even coastal San Diego County can experience the cool spatter of raindrops and spectacular evening lightning displays.

Elderberry, Two Species Of Which Range Over Most Of San Diego County, is in full bloom this month. The flat-topped, creamy white blossoms of this large shrub (or small tree) can be seen in natural coastal canyon areas such as Tecolote Canyon and Los Peñasquitos Canyon Preserve, as well as in the more moist areas of the foothills and mountains. The elderberry’s tiny fruits, which ripen in late summer, have traditionally been used for various drinks and preserves.

July 24 Will Be The New Moon and the beginning of another lunar month. Unlike the calendar month, which averages 30.437 days long, the lunar month averages 29.531 days. So, on average, you'll see each moon phase about one calendar day earlier each month. According to the age-old practice of planting by the Moon, the ground is the most fertile the days leading up to and the days following the new Moon. It might be a good time to plant another round of Summer veggies — or your first round, if you live along the coast and have been waiting for the marine layer to burn off.
Grunion Runs Are Predicted To Occur during the late evening hours (generally 9:35-10:20 pm and before 1 am), following the nocturnal high tide, July 24 through July 27. The small, silvery grunion tend to spawn on wide, gently sloping beaches such as Silver Strand, Mission Beach, Pacific Beach, La Jolla Shores, and Del Mar. Open season for grunion started in March this year, skipped April-June and then resumes July-August. California law allows the taking of grunion in summer (except in those areas classified as ecological preserves). A California fishing license is required for persons 16 years and older — and south of Point Arguello, an Ocean Enhancement Validation is also required. Grunion may be taken by hand only. No holes may be dug in the beach to entrap them. Rule changes in June 2022 limit the daily bag and possession limit for grunion to 30 fish. Check wildlife.ca.gov/Fishing/Ocean/Grunion for more details.
The High Tides On July 23-25 Will Facilitate Grunion Hunting. Wednesday's tide will reach a high of 7.42 ft at 9:01 pm and a low of -1.54 feet at 3:35 am. Thursday's tide will reach a high of 1.34 feet at 9:45 pm and a low of -1.57 ft at 4:16 am. Friday will have a high of 7.02 feet at 10:26 pm and a low of -1.41 feet at 4:53 am.
Cumulonimbus Clouds, Or Thunderheads, Are Most Likely To Form over San Diego County’s deserts and mountains during the latter part of the summer season, beginning around late July. The clouds appear by mid-afternoon — often the result of moist, tropical air entering the county from the south or southeast. If intense, these cloud buildups can be accompanied by enough rain to flood the desert washes and mountain drainages. And when the weather pattern allows the movement of moist air beyond the mountain barriers, even coastal San Diego County can experience the cool spatter of raindrops and spectacular evening lightning displays.

Elderberry, Two Species Of Which Range Over Most Of San Diego County, is in full bloom this month. The flat-topped, creamy white blossoms of this large shrub (or small tree) can be seen in natural coastal canyon areas such as Tecolote Canyon and Los Peñasquitos Canyon Preserve, as well as in the more moist areas of the foothills and mountains. The elderberry’s tiny fruits, which ripen in late summer, have traditionally been used for various drinks and preserves.

July 24 Will Be The New Moon and the beginning of another lunar month. Unlike the calendar month, which averages 30.437 days long, the lunar month averages 29.531 days. So, on average, you'll see each moon phase about one calendar day earlier each month. According to the age-old practice of planting by the Moon, the ground is the most fertile the days leading up to and the days following the new Moon. It might be a good time to plant another round of Summer veggies — or your first round, if you live along the coast and have been waiting for the marine layer to burn off.
Grunion Runs Are Predicted To Occur during the late evening hours (generally 9:35-10:20 pm and before 1 am), following the nocturnal high tide, July 24 through July 27. The small, silvery grunion tend to spawn on wide, gently sloping beaches such as Silver Strand, Mission Beach, Pacific Beach, La Jolla Shores, and Del Mar. Open season for grunion started in March this year, skipped April-June and then resumes July-August. California law allows the taking of grunion in summer (except in those areas classified as ecological preserves). A California fishing license is required for persons 16 years and older — and south of Point Arguello, an Ocean Enhancement Validation is also required. Grunion may be taken by hand only. No holes may be dug in the beach to entrap them. Rule changes in June 2022 limit the daily bag and possession limit for grunion to 30 fish. Check wildlife.ca.gov/Fishing/Ocean/Grunion for more details.
The High Tides On July 23-25 Will Facilitate Grunion Hunting. Wednesday's tide will reach a high of 7.42 ft at 9:01 pm and a low of -1.54 feet at 3:35 am. Thursday's tide will reach a high of 1.34 feet at 9:45 pm and a low of -1.57 ft at 4:16 am. Friday will have a high of 7.02 feet at 10:26 pm and a low of -1.41 feet at 4:53 am.
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