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Warmer Temperatures, Low Rainfall, Cottonwoods, and Transitioning Grasslands

Warmer Temperatures and increased humidity coincide with the subtle onset of San Diego's spring season. By April's end, the intermittent showers, Santa Ana winds, cold nights, and crystal-clear, sun-drenched days of winter will likely be distant memories. The nocturnal, low overcast hugging the coast, which may linger until the late morning, will gradually build into "June gloom" -- the days-long episodes of perpetual overcast most common during May and June.

A Less-than-Spectacular Rainfall Season this year on top of a string of drought years has resulted in rather low springtime water levels in the county's reservoirs. At Lake Hodges (70 percent capacity), surface waters have withdrawn to a point west of the I-15 bridge in Escondido. The big El Capitan Reservoir near Lakeside currently holds 56 percent of its capacity. Lake Morena in far East County is a comparative puddle at 13 percent capacity. Some fishermen are happy with the situation. Less water means more fish in a smaller pond, and that makes for easier catches.

Fremont Cottonwoods along the San Diego River in Mission Gorge will show off their best iridescent green foliage this month. The Old Mission Dam parking area on Father Junipero Serra Trail, off Mission Gorge Road (west of Santee), is a good place to begin a stroll on trails near the riverbed. Be careful -- rattlesnakes may be out and about on warm days this time of year.

The Annual Green-to-Golden Transition of San Diego's wild grasslands typically starts during early April. North-facing hillsides and canyon slopes retain the green color longer, as they are less exposed to drying sunshine, Locally, most of the wild grasses are naturalized (non-native) annuals, the seeds of which were introduced along with hay and other grains brought in by the Spaniards during the 18th and 19th centuries. Some of the mountain meadows have remnants of native grasses, which remain more or less green almost the year round. These rare native grasslands can be found in certain parts of Cuyamaca Rancho State Park and more widely distributed at the Santa Rosa Plateau Ecological Reserve in the Santa Ana Mountains west of Temecula.

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Warmer Temperatures and increased humidity coincide with the subtle onset of San Diego's spring season. By April's end, the intermittent showers, Santa Ana winds, cold nights, and crystal-clear, sun-drenched days of winter will likely be distant memories. The nocturnal, low overcast hugging the coast, which may linger until the late morning, will gradually build into "June gloom" -- the days-long episodes of perpetual overcast most common during May and June.

A Less-than-Spectacular Rainfall Season this year on top of a string of drought years has resulted in rather low springtime water levels in the county's reservoirs. At Lake Hodges (70 percent capacity), surface waters have withdrawn to a point west of the I-15 bridge in Escondido. The big El Capitan Reservoir near Lakeside currently holds 56 percent of its capacity. Lake Morena in far East County is a comparative puddle at 13 percent capacity. Some fishermen are happy with the situation. Less water means more fish in a smaller pond, and that makes for easier catches.

Fremont Cottonwoods along the San Diego River in Mission Gorge will show off their best iridescent green foliage this month. The Old Mission Dam parking area on Father Junipero Serra Trail, off Mission Gorge Road (west of Santee), is a good place to begin a stroll on trails near the riverbed. Be careful -- rattlesnakes may be out and about on warm days this time of year.

The Annual Green-to-Golden Transition of San Diego's wild grasslands typically starts during early April. North-facing hillsides and canyon slopes retain the green color longer, as they are less exposed to drying sunshine, Locally, most of the wild grasses are naturalized (non-native) annuals, the seeds of which were introduced along with hay and other grains brought in by the Spaniards during the 18th and 19th centuries. Some of the mountain meadows have remnants of native grasses, which remain more or less green almost the year round. These rare native grasslands can be found in certain parts of Cuyamaca Rancho State Park and more widely distributed at the Santa Rosa Plateau Ecological Reserve in the Santa Ana Mountains west of Temecula.

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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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