Weather Alert in California

Red Flag Warning issued June 30 at 7:28PM PDT until July 1 at 11:00PM PDT by NWS Eureka CA

AREAS AFFECTED: Lower Middle Klamath; Hoopa; Van Duzen/Mad River; W Mendocino NF/E Mendocino Unit; Trinity

DESCRIPTION: ...SCATTERED DRY LIGHTNING IS LIKELY MONDAY AND TUESDAY AFTERNOON ACROSS THE INTERIOR MOUNTAINS... .A pulse of moisture moving up the Central Valley combined with very hot and dry surface conditions and moderate easterly winds will combined to form scattered, mostly dry thunderstorms over Trinity, Humboldt, and Del Norte counties Monday. Some isolated nocturnal redevelop is possible tonight. Scattered thunderstorms will redevelop Tuesday. These storms will be slower moving to stationary and are most likely to form over Trinity, Northern Mendocino and possibly Del Norte. Storms may also originate in northern Lake County. * OUTFLOW WINDS...Gusty and erratic outflow winds are possible up to 50 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

INSTRUCTION: A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.

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Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Evaporation Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog

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