Weather Alert in Illinois
Severe Thunderstorm Watch issued July 16 at 2:28PM CDT until July 16 at 8:00PM CDT by NWS Chicago IL
AREAS AFFECTED: Boone, IL; Cook, IL; De Kalb, IL; DuPage, IL; Grundy, IL; Kane, IL; Kankakee, IL; Kendall, IL; Lake, IL; La Salle, IL; McHenry, IL; Will, IL; Lake, IN; Porter, IN
DESCRIPTION: SEVERE THUNDERSTORM WATCH 518 REMAINS VALID UNTIL 8 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 12 COUNTIES IN NORTH CENTRAL ILLINOIS BOONE DE KALB LA SALLE IN NORTHEAST ILLINOIS COOK DUPAGE GRUNDY KANE KANKAKEE KENDALL LAKE IL MCHENRY WILL IN INDIANA THIS WATCH INCLUDES 2 COUNTIES IN NORTHWEST INDIANA LAKE IN PORTER THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE, BOLINGBROOK, BOURBONNAIS, BUFFALO GROVE, CAROL STREAM, CHESTERTON, CHICAGO, COAL CITY, CRYSTAL LAKE, DEKALB, DOWNERS GROVE, ELGIN, EVANSTON, GARY, GURNEE, HAMMOND, JOLIET, KANKAKEE, LA SALLE, LEMONT, LOMBARD, MARSEILLES, MCHENRY, MENDOTA, MERRILLVILLE, MINOOKA, MORRIS, MUNDELEIN, NAPERVILLE, OAK LAWN, ORLAND PARK, OSWEGO, OTTAWA, PARK FOREST, PLANO, PORTAGE, SCHAUMBURG, STREATOR, SYCAMORE, VALPARAISO, WAUKEGAN, WHEATON, WILMINGTON, WOODSTOCK, AND YORKVILLE.
INSTRUCTION: N/A
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Weather Topic: What are Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
Next Topic: Cirrostratus Clouds
Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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