Weather Alert in Iowa
Special Weather Statement issued August 22 at 3:07AM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Buchanan; Delaware; Dubuque; Benton; Linn; Jones; Jackson; Iowa; Johnson; Cedar; Clinton; Muscatine; Scott; Keokuk; Washington; Louisa; Jefferson; Henry; Des Moines; Van Buren; Lee; Jo Daviess; Stephenson; Carroll; Whiteside; Rock Island; Henry; Bureau; Putnam; Mercer; Henderson; Warren; Hancock; McDonough; Scotland; Clark
DESCRIPTION: Patchy fog, some dense at time with visibilities of 1/4 mile or less, is possible this morning. The dense fog will be transient and visbilities may bounce around. If dense fog becomes more widespread and less transient a dense fog advisory may become needed. Those out driving this morning, be prepared for rapid changes in visibility and use your low beam headlights.
INSTRUCTION: N/A
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Weather Topic: What are Altocumulus Clouds?
Home - Education - Cloud Types - Altocumulus Clouds
Next Topic: Altostratus Clouds
Similar to cirrocumulus clouds, altocumulus clouds are
characterized by cloud patches. They are distinguished by larger cloudlets
than cirrocumulus clouds but are still smaller than stratocumulus clouds.
Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km)
and may resemble, at times, the shape of a flying saucer.
These uncommon formations, called altocumulus lenticularis, are created by uplift
in the atmosphere and are most often seen in close proximity to mountains.
Next Topic: Altostratus Clouds
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
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