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Temperature inversions bring smoggy weather, "ankle biters" still biting

Near-new moon will lead to a dark Halloween

Santa Ana winds at sunrise in Oceanside - Image by Alex Baltov
Santa Ana winds at sunrise in Oceanside

The Smoggiest Days of the Year are most likely to occur during the next several weeks. Persistent temperature inversions (warmer air overlying cool marine air) are frequent this time of year, and those inversions conspire with the mountainous topography of East County to trap locally generated air pollution under a low-lying lid. During the worst episodes, San Diego County’s coastal area is the hapless recipient of additional smog sneaking down from the Los Angeles Basin. This often occurs when a Santa Ana wind condition begins to weaken: LA smog blown offshore by a Santa Ana may get pushed back our way when the normal sea breeze returns.

Also known as the “yellow fever mosquito”, Aedes Aegypti can spread many disease agents.
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The Aedes Aegypti Mosquito Is Still Common in most of central and coastal San Diego, though East County and higher elevation parts of the county have dryer and colder temps than they prefer. (However, their eggs can lay dormant for up to 8 months and they can survive in temperatures as low as 40º F.) These pesky little buggers, recognizable by the black and white markings on their legs, first showed up here in 2014 and can stick around all year, due to our moderate winters. All they need is wet soil from a morning sprinkler to lay their eggs, so while eliminating standing is good, it doesn’t guarantee a stop to their spread. They are also known as “ankle biters” due to their low-flying, indoor lives, and they can bite multiple times in one landing.

Crescent Moon by Alex Baltov Photography

Make Sure You Bring A Flashlight when you take your kids trick-or-treating this year. On Halloween, the moon will be a waning crescent, just one day away from the new Moon on Friday, November 1st, and less than 1% illuminated. If the new Moon had arrived on the 31st, it would’ve been a “Black Moon” — technically not a scientific term, but still a common title for the second new Moon in a calender month. The name is similar to “Blue Moon,” which describes the second full Moon in a calendar month. A Halloween “Black Moon” won’t occur until 2035; it’s even more rare than a Halloween full moon, which occurs every 18 or 19 years.

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O’side Tree Lighting & Gift Market, Holiday Lights at the Museum, The Elovaters and Little Stranger

Events December 5-December 6, 2024
Santa Ana winds at sunrise in Oceanside - Image by Alex Baltov
Santa Ana winds at sunrise in Oceanside

The Smoggiest Days of the Year are most likely to occur during the next several weeks. Persistent temperature inversions (warmer air overlying cool marine air) are frequent this time of year, and those inversions conspire with the mountainous topography of East County to trap locally generated air pollution under a low-lying lid. During the worst episodes, San Diego County’s coastal area is the hapless recipient of additional smog sneaking down from the Los Angeles Basin. This often occurs when a Santa Ana wind condition begins to weaken: LA smog blown offshore by a Santa Ana may get pushed back our way when the normal sea breeze returns.

Also known as the “yellow fever mosquito”, Aedes Aegypti can spread many disease agents.
Sponsored
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The Aedes Aegypti Mosquito Is Still Common in most of central and coastal San Diego, though East County and higher elevation parts of the county have dryer and colder temps than they prefer. (However, their eggs can lay dormant for up to 8 months and they can survive in temperatures as low as 40º F.) These pesky little buggers, recognizable by the black and white markings on their legs, first showed up here in 2014 and can stick around all year, due to our moderate winters. All they need is wet soil from a morning sprinkler to lay their eggs, so while eliminating standing is good, it doesn’t guarantee a stop to their spread. They are also known as “ankle biters” due to their low-flying, indoor lives, and they can bite multiple times in one landing.

Crescent Moon by Alex Baltov Photography

Make Sure You Bring A Flashlight when you take your kids trick-or-treating this year. On Halloween, the moon will be a waning crescent, just one day away from the new Moon on Friday, November 1st, and less than 1% illuminated. If the new Moon had arrived on the 31st, it would’ve been a “Black Moon” — technically not a scientific term, but still a common title for the second new Moon in a calender month. The name is similar to “Blue Moon,” which describes the second full Moon in a calendar month. A Halloween “Black Moon” won’t occur until 2035; it’s even more rare than a Halloween full moon, which occurs every 18 or 19 years.

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San Diego Holiday Experiences

As soon as Halloween is over, it's Christmas time in my mind
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Barrio Logan’s very good Dogg

Chicano comfort food proves plenty spicy
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4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs
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