Weather Alert in Iowa

Recent Locations: Luling, TX   Cedar Key, FL   Grundy Center, IA  

Heat Advisory issued August 14 at 3:20AM CDT until August 16 at 8:00PM CDT by NWS Omaha/Valley NE

AREAS AFFECTED: Monona; Montgomery; Fremont; Cedar; Thurston; Pierce; Wayne; Madison; Stanton; Cuming; Otoe

DESCRIPTION: * WHAT...Heat index values 104 to 107 expected. * WHERE...Portions of southwest and west central Iowa and northeast and southeast Nebraska. * WHEN...From 11 AM to 8 PM CDT Saturday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.

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Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

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