Weather Alert in Illinois
Hydrologic Outlook issued March 9 at 1:57PM CDT by NWS Chicago IL
AREAS AFFECTED: Cook, IL; De Kalb, IL; DuPage, IL; Ford, IL; Grundy, IL; Iroquois, IL; Kane, IL; Kankakee, IL; Kendall, IL; La Salle, IL; Lee, IL; Livingston, IL; Will, IL; Benton, IN; Jasper, IN; Lake, IN; Newton, IN; Porter, IN
DESCRIPTION: ESFLOT Waves of showers and thunderstorms are likely late Tuesday into Wednesday. Some storms may produce rainfall rates in excess of 1 to 2 inches per hour, which could lead to localized flooding. The locations with the highest risk of flooding are somewhat uncertain. The highest probability of heavy rainfall is generally along and south of I-80, but drought conditions worsen toward Livingston, Ford, Iroquois, and Benton counties. Drought conditions increase the rainfall rates needed to cause flood impact. Closer to the Chicago Metropolitan Area, lower rainfall rates would be required to cause flood impacts, but the probability of heavy rainfall there is lower. This outlook means that elevated water levels and potential impacts are possible, but not yet certain. Persons should closely monitor forecasts including the possibility of flood watches, warnings, and advisories. This product will be updated by tomorrow morning.
INSTRUCTION: N/A
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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