Hazardous Weather Outlook for Gibson City, Illinois
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1242 PM CDT Wed Jul 17 2019
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181745-
Winnebago-Boone-McHenry-Lake-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
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1242 PM CDT Wed Jul 17 2019 /142 PM EDT Wed Jul 17 2019/
This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.
.DAY ONE...This Afternoon and Tonight.
Weather hazards expected...
Elevated Thunderstorm Risk...with an associated:
Elevated damaging wind risk...up to 60 mph.
Limited Flooding Risk.
Limited Excessive heat Risk.
DISCUSSION...
Strong to severe thunderstorms are possible tonight. Although
widely scattered storms are possible across much of northern
Illinois and northwest Indiana this afternoon, the highest
potential for strong storms is over north central Illinois
tonight. The main threats are damaging winds and heavy rainfall
with localized flooding.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
Thursday...
Limited Severe Thunderstorm Risk.
Limited Flooding Risk.
Significant Excessive Heat Risk.
Friday and Saturday...
Limited Thunderstorm Risk.
Significant Excessive Heat Risk.
Sunday...
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk.
Monday...
Limited Thunderstorm Risk.
DISCUSSION:
Heat will build to dangerous levels for the entire area Thursday
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 may be needed tonight.
GENERAL STORM MOTION OF THE DAY:
Moving toward the east southeast at 25 to 45 mph.
Excessive Heat Watch for Gibson City, Illinois
URGENT - WEATHER MESSAGE
National Weather Service Chicago IL
1024 AM CDT Wed Jul 17 2019
...A PERIOD OF DANGEROUS HEAT EXPECTED ACROSS NORTHERN ILLINOIS
AND NORTHWEST INDIANA...
.A multiple day episode of dangerous heat is expected later this
week centered on Friday into the start of the weekend. This heat
will expand into the area Thursday afternoon and persist through
Friday and into Saturday. There is a potential for showers and
thunderstorms Thursday morning that may keep Thursday cooler than
forecast, but confidence is increasing in dangerous heat arriving
by Friday. Additionally, there will be little relief from the
heat overnight Thursday and Friday. The urban heat island core of
Chicago is most susceptible to night time temperatures that do
not cool significantly, limiting the amount of relief that can
occur at night.
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Lee-De Kalb-Kane-DuPage-Cook-La Salle-Kendall-Grundy-Will-
Kankakee-Livingston-Iroquois-Ford-Lake-Porter-Newton-Jasper-
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Including the cities of 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
1024 AM CDT Wed Jul 17 2019 /1124 AM EDT Wed Jul 17 2019/
...EXCESSIVE HEAT WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH SATURDAY EVENING...
* HIGH TEMPERATURES...Peaking in the 90s each day, with Friday
and Saturday potentially in the upper 90s to near 100 degrees.
* MAXIMUM HEAT INDICES...Peaking 102 to 112 each day.
* LOW TEMPERATURES...Lows only in the upper 70s to near 80 on
Thursday and Friday nights will offer little to no relief from
the heat.
* 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...
An Excessive Heat Watch means that a prolonged period of hot
temperatures is expected. The combination of hot temperatures and
high humidity will combine to create a dangerous situation in
which heat illnesses are possible. Drink plenty of fluids...stay
in an air-conditioned room...stay out of the sun...and check up
on relatives and neighbors.
The extended duration of heat, combined with nearly full
sunshine, and oppressive warmth even at night will lead to
potentially hazardous conditions, particularly for the elderly
and those with pre-existing health conditions. Residents of the
city of Chicago can call 3...1...1...to request well being checks
for elderly friends or family members, or for information on
finding the nearest cooling center.
