Weather Alert in Illinois
Severe Thunderstorm Warning issued July 16 at 3:11PM CDT until July 16 at 3:45PM CDT by NWS Chicago IL
AREAS AFFECTED: Cook, IL; DuPage, IL; Will, IL
DESCRIPTION: At 310 PM CDT, severe thunderstorms were located along a line extending from near Woodridge to Romeoville to Crest Hill, moving east at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Trained weather spotters. At 3:07 PM, a 62 mph wind gust was reported in Naperville. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Justice, Joliet, Clarendon Hills, Plainfield, Crest Hill, Orland Hills, La Grange, Naperville, Tinley Park, Burr Ridge, Palos Hills, Orland Park, New Lenox, Crystal Lawns, Willowbrook, Westmont, Fairmont, Ingalls Park, Western Springs, Indian Head Park, Hinsdale, Hodgkins, Darien, Woodridge, and Downers Grove.
INSTRUCTION: For your protection move to an interior room on the lowest floor of a building.
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North America Water Vapor (Moisture)
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Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
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