Weather Alert in Washington
Flood Warning issued March 19 at 1:23AM PDT until March 22 at 11:18AM PDT by NWS Seattle WA
AREAS AFFECTED: Snohomish, WA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Washington... Snohomish River At Snohomish affecting Snohomish County. .Heavy rain over the Central Cascades combined with higher snow levels pushed the Snohomish River at Snohomish above flood stage late Wednesday afternoon. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Snohomish River at Snohomish. * WHEN...Until late Sunday morning. * IMPACTS...At 25.0 feet, the Snohomish River will cause minor flooding of lowlands not protected by levees and on the Old Snohomish-Monroe highway. A stage of 25 feet on the Snohomish River corresponds to a Phase 2 in the Snohomish County flood program. * ADDITIONAL DETAILS... - At 1:00 AM PDT Thursday the stage was 26.3 feet. - Flood stage is 25.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:00 AM PDT Thursday was 26.3 feet. - Forecast...The river will crest between 26.5 and 26.9 feet this morning. The river will begin receding this afternoon and could briefly fall below flood stage Friday afternoon and evening before rising back above flood stage Friday night. The river is forecast to crest again near 26.2 feet Saturday afternoon. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued by this morning at 930 AM PDT.
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Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
Weather Topic: What are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
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