Hazardous Weather Outlook
Issued by NWS Central Illinois

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FLUS43 KILX 211015
HWOILX

Hazardous Weather Outlook
National Weather Service Lincoln IL
515 AM CDT Fri Jul 21 2017

ILZ030-031-038-043>046-055>057-063-221100-
Champaign-Clark-Coles-De Witt-Douglas-Edgar-Marshall-McLean-Piatt-
Vermilion-Woodford-
515 AM CDT Fri Jul 21 2017

...HEAT ADVISORY IN EFFECT UNTIL 8 PM CDT SATURDAY...

This Hazardous Weather Outlook is for portions of central
Illinois and east central Illinois.

.DAY ONE...TODAY AND TONIGHT...

Hot and humid weather will prevail across the area again
today with heat index values ranging from 105 to 110 degrees.

Widely scattered thunderstorms will occur across the area this
morning. A few storms may produce gusty winds, brief heavy rain
and frequent lightning.

The threat for scattered severe storms will increase late tonight
and into the early morning hours of Saturday, especially along
and north of the Interstate 74 corridor. Damaging wind gusts will
be the primary threat late tonight.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

Hot and humid conditions will prevail Saturday with Heat Index
values of 105 to 110 during the afternoon. Slightly cooler and
less humid air will filter in on Sunday.

Scattered thunderstorms may redevelop Saturday afternoon into
early Saturday night as a cool front sinks into the area. Some of
the storms could become severe on Saturday...with damaging wind
gusts, large hail, and torrential downpours possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late tonight into the early
morning hours of Saturday, especially in areas along and north of
the Interstate 74 corridor.

$$

ILZ027>029-036-037-041-042-221100-
Fulton-Knox-Logan-Mason-Peoria-Stark-Tazewell-
515 AM CDT Fri Jul 21 2017

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY...

This Hazardous Weather Outlook is for portions of central
Illinois and west central Illinois.

.DAY ONE...TODAY AND TONIGHT...

Hot and humid weather will prevail across the area again
today with heat index values around 110 degrees this afternoon
into early this evening. Isolated thunderstorms will be possible
late this afternoon into tonight, with the main threat for severe
storms along and north of I-74. A few storms in our area may
produce strong wind gusts and torrential rainfall late this
afternoon into early this evening.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

Hot and humid conditions will prevail through Saturday. Afternoon
heat index values will peak around 110 degrees before slightly
cooler and less humid air moves in on Sunday.

The thunderstorms may becoming more numerous late Saturday
afternoon into Saturday night as a cold front sinks into the area.
Some of the storms could become severe on Saturday...with
damaging wind gusts, large hail, and torrential downpours
possible.

.SPOTTER INFORMATION STATEMENT...

Limited spotter activation may be needed later this afternoon.

$$

ILZ040-047>054-061-062-066>068-071>073-221100-
Cass-Christian-Clay-Crawford-Cumberland-Effingham-Jasper-Lawrence-
Macon-Menard-Morgan-Moultrie-Richland-Sangamon-Schuyler-Scott-
Shelby-
515 AM CDT Fri Jul 21 2017

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM CDT SATURDAY...

This Hazardous Weather Outlook is for portions of central
Illinois, east central Illinois, southeast Illinois and west
central Illinois.

.DAY ONE...TODAY AND TONIGHT...

Heat index values will approach 110 degrees this afternoon into
early this evening.

An isolated thunderstorm will be possible this afternoon into
early this evening. Although no organized severe weather is
expected, a few of the storms will be capable of producing gusty
winds, torrential rainfall and frequent lightning.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

Hot and humid conditions will prevail through Saturday. Afternoon
heat index values will peak near 110 degrees before slightly
cooler and less humid air filters in on Sunday.

Thunderstorms may become more widespread ahead of a weak cold
front later Saturday afternoon into Saturday night. Some of the
storms could become strong on Saturday...with gusty winds, hail,
and torrential downpours possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

$$

Smith



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