Weather Alert in Illinois

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Flash Flood Warning issued April 3 at 8:08PM CDT until April 4 at 2:00AM CDT by NWS Chicago IL

AREAS AFFECTED: Livingston, IL

DESCRIPTION: FFWLOT The National Weather Service in Chicago has issued a * Flash Flood Warning for... Western and Northwestern Livingston County in central Illinois... * Until 200 AM CDT. * At 808 PM CDT, Doppler radar indicated thunderstorms producing heavy rain is moving into the warned area with a history of producing flash flooding. Flash flooding is expected to begin shortly. HAZARD...Flash flooding. SOURCE...Radar. IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches, streets, underpasses, low-lying areas, and other poor drainage areas. * Some locations that will experience flash flooding include... Streator, Pontiac, Dwight, Flanagan, Odell, South Streator, Cornell and Long Point. Additional waves of showers and storms are expected late this evening through tonight.

INSTRUCTION: A Flash Flood Warning means rapid-onset flooding is imminent or may already be occurring. Persons along creeks, drainage ditches, and other waterways should take immediate precautions to protect life and property.

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Weather Topic: What are Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain

Weather Topic: What is Graupel?

Home - Education - Precipitation - Graupel

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

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