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2 products issued by NWS for: Amf Ohare IL
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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
407 AM CDT Thu Jul 18 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
190915-
Winnebago-Boone-McHenry-Lake-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Porter-Newton-Jasper-Benton-
407 AM CDT Thu Jul 18 2019 /507 AM EDT Thu Jul 18 2019/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Significant Thunderstorm Risk...with an associated:
     Limited hail risk...up to quarter size.
     Elevated damaging wind risk...up to 60 to 70 mph.
  Elevated Flooding Risk.
  Significant Excessive heat Risk.

DISCUSSION...

A complex of thunderstorms will move southeast out of Iowa early
this morning, and reach northern Illinois by around dawn. Expect
these storms to continue moving into remaining areas in northeast
Illinois and northwest Indiana through mid to late morning.
Strong to severe storms will be possible, with the main threats being
damaging winds and heavy rainfall with localized flooding.

Heat indices will rise into the 105 to 110 degree range late this
afternoon, especially for locales south and west of a Rockford to
Joliet to Valparaiso line.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...
  Limited Thunderstorm Risk.
  Extreme Excessive Heat Risk.
Saturday...
  Limited Severe Thunderstorm Risk.
  Elevated Flooding Risk.
  Significant Excessive Heat Risk.
Sunday...
  Limited Thunderstorm Risk.
  Limited Excessive Heat Risk.

DISCUSSION:

Heat will build to dangerous levels for the entire area Friday
through Saturday. Heat indices look to climb in excess of 105
degrees for much of the area. Very warm overnight temperatures
will offer little relief from the heat and humidity, especially in
the urban heat island of Chicago.

.SPOTTER INFORMATION STATEMENT...

  Spotters will likely be needed this morning.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east southeast at 40 to 45 mph.

$$



Excessive Heat Warning

URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
259 AM CDT Thu Jul 18 2019

ILZ008-010>014-019>023-032-033-039-INZ001-002-010-011-019-181600-
/O.CON.KLOT.EH.W.0001.190718T1700Z-190721T0000Z/
Ogle-Lee-De Kalb-Kane-DuPage-Cook-La Salle-Kendall-Grundy-Will-
Kankakee-Livingston-Iroquois-Ford-Lake-Porter-Newton-Jasper-
Benton-
Including the cities of Rochelle, Oregon, Mount Morris, Byron,
Polo, Dixon, DeKalb, Sycamore, Aurora, Elgin, Naperville,
Wheaton, Downers Grove, Elmhurst, Lombard, Carol Stream, Addison,
Chicago, Humboldt Park, Hyde Park, Lakeview, Lincoln Park,
Logan Square, Navy Pier, Ottawa, Streator, Peru, La Salle,
Mendota, Marseilles, Oswego, Boulder Hill, Yorkville, Plano,
Morris, Coal City, Minooka, Joliet, Bolingbrook, Kankakee,
Bourbonnais, Bradley, Pontiac, Dwight, Fairbury, Watseka, Gilman,
Onarga, Paxton, Gibson City, Gary, Hammond, East Chicago,
Merrillville, Portage, Valparaiso, Chesterton, Roselawn,
Kentland, Morocco, Goodland, Brook, Rensselaer, DeMotte, Fowler,
Otterbein, Oxford, and Boswell
259 AM CDT Thu Jul 18 2019 /359 AM EDT Thu Jul 18 2019/

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON CDT /1 PM
EDT/ TODAY TO 7 PM CDT /8 PM EDT/ SATURDAY...

* HIGH TEMPERATURES....88 to 91 today near the lake and 92 to 96
  inland. The hottest conditions will be on Friday and Saturday
  with high temperatures of 95 to 100 degrees.

* MAXIMUM HEAT INDICES...99 to 101 today near the lake and 105 to
  110 inland. Peaking Friday at 109 to 115 degrees.

* IMPACTS...The cumulative effects of temperatures and heat
  index values this high could lead to heat related illnesses
  with prolonged exposure. Those without air conditioning,
  elderly, small children, and pets are especially susceptible.
  Plan ahead. Have a cool place to shelter from the heat. Avoid
  outdoor activity, especially strenuous ones, during the peak
  heating times of the day.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take extra precautions...if you work or spend time outside. When
possible...reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

To reduce risk during outdoor work...the occupational safety and
health administration recommends scheduling frequent rest breaks
in shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency...call 9 1 1.

An Excessive Heat Warning means that a prolonged period of
dangerously hot temperatures will occur. The combination of hot
temperatures and high humidity will combine to create a dangerous
situation in which heat illnesses are likely. Drink plenty of
fluids...stay in an air-conditioned room...stay out of the sun...
and check up on relatives and neighbors.

Young children and pets should never be left unattended in
vehicles under any circumstances. This is especially true during
warm or hot weather when car interiors can reach lethal
temperatures in a matter of minutes.

&&

$$



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