Weather Alert in California
Flood Warning issued February 25 at 1:50PM PST until February 26 at 10:05PM PST by NWS Sacramento CA
AREAS AFFECTED: Butte, CA; Glenn, CA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in California... Sacramento River At Vina Woodson Bridge affecting Tehama County. Sacramento River At Tehama Bridge affecting Tehama County. Sacramento River At Ord Ferry affecting Glenn and Butte Counties. .Recent precipitation has lead to to minor flooding at Ord Ferry, Tehama Bridge and Vina Woodson Bridge on the Upper Sacramento River System. For the Upper Sacramento River...including Tehama Bridge, Vina Woodson Bridge, Ord Ferry...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Sacramento River at Ord Ferry. * WHEN...From this evening to late tomorrow evening. * IMPACTS...At 110.3 feet, Head cuts in 3Bs silt weir start overflow into Butte Basin, flooding dips on Ord Ferry Road west of River Road in Butte County. Persistent flows at or above this level increase flooding in Butte Basin. Ord Ferry Road and additional roads in Glenn and Colusa counties are closed due to flooding. At 112.0 feet, At 112 to 113 feet, water inundates portions of Ord Ferry Road (County Road 32) in Glenn County from CA-45 east to the county line at the Sacramento River. At 113.8 feet, Design overflow level for M&T, 3Bs and Goose Lake flood control facilities to divert flood flows into Butte Basin. M&T overflows close River Road from Ord Ferry Road to Chico Road. Ord Ferry Road is already closed. At 114.0 feet, Designated flood stage left bank. * ADDITIONAL DETAILS... - At 12:45 PM PST Wednesday the stage was 110.1 feet. - Bankfull stage is 114.0 feet. - Forecast...The river is expected to rise above flood stage late this evening to a crest of 114.9 feet tomorrow morning. It will then fall below flood stage tomorrow afternoon. - Flood stage is 114.0 feet. - Flood History...This crest compares to a previous crest of 114.8 feet on 03/20/2011. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. For more hydrologic information and stage definitions refer to the following web site: wrh.noaa.gov/sto/hydro_data.php The next statement will be issued Thursday afternoon at 200 PM PST.
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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