Special Weather Statement, NWS Lincoln, IL

Area Forecast Discussion
National Weather Service Lincoln IL
710 PM CDT Sun Jul 23 2017

.SHORT TERM...(This evening through Monday)
ISSUED AT 340 PM CDT Sun Jul 23 2017

A couple features will continue to produce chances for showers and
thunderstorms through evening as SBCAPE to around 3000 J/kg has
developed with afternoon heating across central IL. First is the
upper trough axis located approximately along I-57 and pushing
eastward. A few showers and isolated thunderstorms could form east
of this for the next few hours before subsidence behind the axis
limits any development. Second is a surface trough axis from
Michigan through Kansas city and starting to produce some the
Milwaukee area back through NW Illinois west of the Illinois River.
This feature will move southeastward this afternoon and bring the
best chance for isolated to scattered thunderstorms across central
IL into the evening until nocturnal cooling diminishes instability
and the feature moves southeast of the area. Winds will diminish and
turn northerly overnight behind the trough axis with drier air
moving in, allowing temperatures to fall into the 60s for lows.
Expect highs to reach anywhere from 81 along I-74 to 87 in
Lawrenceville Monday.

.LONG TERM...(Monday night through Sunday)
ISSUED AT 340 PM CDT Sun Jul 23 2017

High pressure will bring dry weather and still relatively low
humidity Tuesday then Gulf moisture will return by Wednesday
behind the outgoing high. A slight chance for thunderstorms
returns as early as Wednesday afternoon as GFS produces
precipitation in a weak disturbance, however most models focus
precip chances with a cold front on track for Wednesday night into
Thursday. Highs on Tuesday expected in the mid 80s followed by
around 90 on Wednesday. The heat will be brief as the cold front
drops highs back to the low to mid 80s for the remainder of the
week and weekend. High pressure should keep conditions dry again
from late Thursday night into next weekend.

&&

.AVIATION...(For the 00Z TAFS through 00Z Monday evening)
Issued at 710 PM CDT Sun Jul 23 2017

VFR conditions will prevail at all sites next 24hrs. Keeping some
VCTS at all sites this evening except PIA. The way the trough is
rotating through the state, believe PIA is safe. Other sites could
see convection for 1-2 or 3 hrs this evening and then skies should
become mostly clear overnight. Light fog is again possible toward
morning and then some low CU/SC should develop tomorrow late
morning. Winds will be light and become northwest as the trough
moves through and then become northerly tomorrow.

&&

.ILX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

SHORT TERM...37
LONG TERM...37
AVIATION...Auten

Hazardous Weather Outlook
National Weather Service Lincoln IL
301 PM CDT Sun Jul 23 2017

ILZ027>031-036>038-040>057-061-241100-
Cass-Champaign-Christian-Coles-De Witt-Douglas-Edgar-Fulton-Knox-
Logan-Macon-Marshall-Mason-McLean-Menard-Morgan-Moultrie-Peoria-
Piatt-Sangamon-Schuyler-Scott-Shelby-Stark-Tazewell-Vermilion-
Woodford-
301 PM CDT Sun Jul 23 2017

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

.DAY ONE...TONIGHT...

Widely scattered thunderstorms will be possible into this evening.
A few of the storms will be capable of producing strong wind
gusts and hail.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

As another frontal boundary approaches the area later Wednesday
and Thursday, thunderstorm chances will return to the area.

.SPOTTER INFORMATION STATEMENT...

Limited spotter activation may be needed early this evening.

ILZ062-063-066>068-071>073-241100-
Clark-Clay-Crawford-Cumberland-Effingham-Jasper-Lawrence-Richland-
301 PM CDT Sun Jul 23 2017

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

.DAY ONE...TONIGHT...

Widely scattered thunderstorms will be possible this evening.
Severe weather is not anticipated.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

As another frontal boundary approaches the area late Wednesday
night into Thursday, thunderstorms chances will return to the
area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

Bak

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
634 PM CDT SUN JUL 23 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0459 PM     HAIL             DIVERNON                39.57N 89.65W
07/23/2017  M0.88 INCH       SANGAMON           IL   TRAINED SPOTTER

&&

EJL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
649 PM CDT SUN JUL 23 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0420 PM     HAIL             1 NE MANCHESTER         39.55N 90.32W
07/23/2017  M0.88 INCH       SCOTT              IL   TRAINED SPOTTER

            ON US-67

&&

EJL

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
716 PM CDT SUN JUL 23 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0420 PM     HAIL             1 NE MANCHESTER         39.55N 90.32W
07/23/2017  M0.88 INCH       SCOTT              IL   TRAINED SPOTTER

            ON US-67

0445 PM     HAIL             AUBURN                  39.58N 89.75W
07/23/2017  M0.88 INCH       SANGAMON           IL   TRAINED SPOTTER

0445 PM     HAIL             AUBURN                  39.58N 89.75W
07/23/2017  M1.00 INCH       SANGAMON           IL   AMATEUR RADIO

0445 PM     HAIL             AUBURN                  39.58N 89.75W
07/23/2017  M1.00 INCH       SANGAMON           IL   PUBLIC

            PUBLIC REPORT RELAYED THROUGH BROADCAST MEDIA

0459 PM     HAIL             DIVERNON                39.57N 89.65W
07/23/2017  M0.88 INCH       SANGAMON           IL   TRAINED SPOTTER

&&

EJL

Special Weather Statement
National Weather Service Lincoln IL
725 PM CDT SUN JUL 23 2017

ILZ045-046-240115-
Vermilion-Champaign-
725 PM CDT SUN JUL 23 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN VERMILION AND
NORTHEASTERN CHAMPAIGN COUNTIES UNTIL 815 PM CDT...

At 725 PM CDT, Doppler radar was tracking a strong thunderstorm near
Potomac, or 14 miles east of Rantoul, moving east at 35 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Danville, Rossville, Potomac, Bismarck, Henning, Middle Fork Wildlife
Area, Armstrong, Collison, Alvin, Penfield and Vermilion County
Airport.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4026 8798 4040 8796 4040 8794 4041 8793
      4036 8753 4014 8753
TIME...MOT...LOC 0025Z 283DEG 29KT 4032 8788

Auten