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Flood Warning

Flood Statement
National Weather Service Chicago/Romeoville IL
450 PM CDT Fri Jul 21 2017

...The Flood Warning continues for the following rivers in
Illinois...
  Fox River at Algonquin Tailwater affecting Kane and McHenry
  Counties
  Fox River at Montgomery affecting Kane and Kendall Counties


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Safety message...If you encounter a flooded roadway...turn around and
find an alternate route.

&&

ILC089-093-221150-
/O.CON.KLOT.FL.W.0098.000000T0000Z-000000T0000Z/
/MNGI2.2.ER.170712T2137Z.170723T0600Z.000000T0000Z.UU/
450 PM CDT Fri Jul 21 2017

The Flood Warning continues for
  The Fox River at Montgomery.
* until further notice.
* At  415 PM Friday the stage was 13.7 feet.
* Flood stage is 13.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue rising to near 14.4 feet by
  early Sunday morning then begin falling.

&&

LAT...LON 4194 8827 4169 8826 4154 8860 4163 8860
      4173 8838 4195 8838

$$





Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
421 PM CDT Fri Jul 21 2017

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
222130-
Winnebago-Boone-McHenry-Lake Illinois-Ogle-Lee-De Kalb-Kane-
DuPage-Cook-La Salle-Kendall-Grundy-Will-Kankakee-Livingston-
Iroquois-Ford-Lake Indiana-Porter-Newton-Jasper-Benton-
421 PM CDT Fri Jul 21 2017 /521 PM EDT Fri Jul 21 2017/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...Tonight.

WEATHER HAZARDS EXPECTED:
  Significant Thunderstorm Risk...with an associated:
      Elevated Tornado Risk Along and West of I-39.
      Elevated Hail Risk...up to quarter size.
      Significant Thunderstorm Wind Damage Risk...up to 70
MPH.
  Significant Flooding Risk.
  Significant Excessive Heat Risk.

DISCUSSION:

Severe thunderstorms expected early this evening through late
evening across the entire outlook area, with damaging winds the
primary severe weather threat. In addition, there is an isolated
tornado threat, mainly along and west of I-39. Also, torrential
rainfall will be possible with any storm. Behind the initial
complex of storms, additional heavy rain producing thunderstorms
will likely develop overnight, especially across northern
Illinois. Heaviest rainfall amounts, of 1 to 3 inches or more,
are expected to occur primarily over northern Illinois north of
Interstate 80.

In addition, flooding will continue along portions of the Des
Plaines, Fox, and Kishwaukee rivers.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Limited Flooding Risk.
  Elevated Severe Thunderstorm Risk.
  Elevated Excessive Heat Risk.
Sunday...
  Limited Severe Thunderstorm Risk.
Thursday...
  Limited Thunderstorm Risk.

In addition, flooding will continue along portions of the Des
Plaines, Fox, Kishwaukee, Rock, and Pecatonica rivers.

.SPOTTER INFORMATION STATEMENT...

Spotters will likely be needed early this evening and overnight.

GENERAL STORM MOTION OF THE DAY:

Toward the east-southeast at 30 to 40 mph.

&&

$$



Flash Flood Watch

Flood Watch
National Weather Service Chicago/Romeoville IL
310 PM CDT Fri Jul 21 2017

ILZ003>006-008-010>014-019>022-220415-
/O.CON.KLOT.FF.A.0004.170721T2100Z-170722T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-
Including the cities of Rockford, Belvidere, Woodstock, Waukegan,
Oregon, Dixon, Dekalb, Aurora, Elgin, Wheaton, Chicago, Ottawa,
Oswego, Morris, and Joliet
310 PM CDT Fri Jul 21 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of north central Illinois and northeast Illinois,
  including the following areas, in north central Illinois,
  Boone, De Kalb, La Salle, Lee, Ogle, and Winnebago. In
  northeast Illinois, Cook, DuPage, Grundy, Kane, Kendall, Lake
  IL, McHenry, and Will.

* Through Saturday morning.

* Multiple rounds of thunderstorms producing torrential rainfall
  with rates up to two inches per hour are likely to move across
  portions of north central and northeast Illinois late this
  afternoon through early Saturday morning.

* Additional heavy rainfall could exacerbate flooding already
  occurring across portions of northern Illinois...producing new
  rises on area rivers and creeks. With the ground already
  saturated in many areas...heavy rainfall will likely quickly
  produce runoff and produce flash flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

Rodriguez




U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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