Weather Alert in Illinois

Recent Locations: Chicago, IL  

Flood Warning issued April 29 at 9:43AM CDT until May 7 at 4:36AM CDT by NWS St Louis MO

AREAS AFFECTED: Clinton, IL

DESCRIPTION: ...The Flood Warning continues for the following rivers in Illinois... Kaskaskia River at Carlyle. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Kaskaskia River at Carlyle. * WHEN...Until Wednesday, May 07. * ADDITIONAL DETAILS... - At 9:30 AM CDT Tuesday the stage was 21.7 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Tuesday was 21.7 feet. - Forecast...The river will fall to 20.4 feet early Friday morning. It will then rise to 20.5 feet Friday morning. It will fall to 19.2 feet early Saturday morning. It will then rise to 19.3 feet Sunday morning. It will fall below flood stage late Monday evening. - Flood stage is 16.5 feet.

INSTRUCTION: Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

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North America Water Vapor (Moisture)

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Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Condensation Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds

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