Weather Alert in Illinois
Flood Warning issued May 17 at 9:16PM CDT until May 21 at 7:00AM CDT by NWS St Louis MO
AREAS AFFECTED: Pike, IL; Marion, MO
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Louisiana. Mississippi River at Clarksville. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Hannibal. * WHEN...Until Tuesday morning. * IMPACTS...At 17.0 feet, John Hay Recreation Area on east side (inside the Illinois Sny Levee) begins flooding. * ADDITIONAL DETAILS... - At 8:15 PM CDT Friday the stage was 17.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:15 PM CDT Friday was 17.5 feet. - Forecast...The river is expected to fall below flood stage early Monday morning and continue falling to 15.8 feet Thursday evening. - Flood stage is 17.0 feet.
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Be especially cautious at night when it is harder to recognize the dangers of flooding. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
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Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
