Areal Flood Advisory
Expires 11:00 PM CDT on August 01, 2014
Statement as of 7:55 PM CDT on August 1, 2014
The National Weather Service in Chicago has issued an
* Urban and Small Stream Flood Advisory for...
northern Boone County in north central Illinois...
northern McHenry County in northeast Illinois...
Northwestern Lake County in northeast Illinois...
* until 1100 PM CDT
* at 753 PM CDT... National Weather Service Doppler radar indicated
slow moving thunderstorms with very heavy rainfall moving south
across the advisory area. Doppler radar estimates that in excess
of 2 inches of rain may have fallen in the past hour in northern
McHenry County near the Wisconsin border.
* Runoff from this excessive rainfall will cause minor flooding to
occur... especially along small streams and near low water
crossings. Some locations that will experience minor flooding
include... Antioch... Fox Lake... Grayslake... Harvard... Island Lake...
Lake Villa... Long Lake... McHenry... Pistakee Highlands... Round
Lake... Venetian Village... Wonder Lake... Woodstock... Bull Valley and
Excessive runoff from this storm will cause elevated levels on small
creeks and streams... ponding of water on roads... urban areas...
highways... underpasses and low lying areas... .country roads... as
well as farmland along the banks of creeks and streams.
Lat... Lon 4228 8803 4226 8854 4231 8894 4248 8894
4250 8894 4250 8804
Expires 9:45 PM CDT on August 01, 2014
Statement as of 8:34 PM CDT on August 1, 2014
... Strong thunderstorms likely into mid evening...
A batch of showers and locally intense thunderstorms will continue
to affect portions of north central Illinois and the northern and
northwestern suburbs of Chicago through 930 PM CDT. The storms
will spread slowly southward into the western and closer in
northern suburbs of Chicago as well as back into De Kalb County.
The thunderstorms will produce torrential rainfall and continuous
lightning... in addition... isolated stronger storms could produce
hail as large as a half inch to an inch in diameter and wind gusts
over 40 mph.
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