Severe Thunderstorm Warning 135, NWS Lincoln, IL

211 
WWUS53 KILX 170349
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1049 PM CDT THU AUG 16 2018

ILC129-170358-
/O.CAN.KILX.SV.W.0135.000000T0000Z-180817T0415Z/
Menard-
1049 PM CDT THU AUG 16 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MENARD COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3976 8979 3995 8958 3987 8941 3965 8969
      3971 8975
TIME...MOT...LOC 0348Z 315DEG 27KT 3979 8962 

$$

ILC167-170415-
/O.CON.KILX.SV.W.0135.000000T0000Z-180817T0415Z/
Sangamon-
1049 PM CDT THU AUG 16 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR CENTRAL SANGAMON COUNTY...

At 1048 PM CDT, a severe thunderstorm was located over Springfield,
moving southeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Springfield, Chatham, Sherman, Rochester, Riverton, Williamsville,
Jerome, Southern View, Leland Grove, Grandview, Spaulding, Dawson,
Clear Lake, Curran and Capital Airport.

Those attending the Illinois State Fair are in the path of this 
storm and should prepare for IMMINENT DANGEROUS WEATHER CONDITIONS. 
SEEK SHELTER NOW!

This includes the following highways...
 Interstate 55 between mile markers 89 and 107.
 Interstate 72 between mile markers 91 and 112.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3976 8979 3995 8958 3987 8941 3965 8969
      3971 8975
TIME...MOT...LOC 0348Z 315DEG 27KT 3979 8962 

HAIL...1.00IN
WIND...60MPH
 
$$

37

105 
WWUS53 KILX 170412
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
1112 PM CDT THU AUG 16 2018

ILC167-170420-
/O.EXP.KILX.SV.W.0135.000000T0000Z-180817T0415Z/
Sangamon-
1112 PM CDT THU AUG 16 2018

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SANGAMON COUNTY WILL
EXPIRE AT 1115 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However hail, 
gusty winds and heavy rain are still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect for
portions of Sangamon County until midnight.

LAT...LON 3976 8979 3995 8958 3987 8941 3965 8969
      3971 8975
TIME...MOT...LOC 0410Z 308DEG 17KT 3973 8952 

$$

37

Area Forecast Discussion
National Weather Service Lincoln IL
957 PM CDT Thu Aug 16 2018

.UPDATE...
Issued at 955 PM CDT Thu Aug 16 2018

Storm weather moving se into central IL late this Thu evening.
Updated the forecast to address the chances of showers and
thunderstorms rest of tonight, with a few strong to severe
thunderstorms occurring at late evening from I-55 west, including
a storm moving se toward the SPI airport and IL State
Fairgrounds. A 581 dm 500 mb low over central IA near Des Moines
will track track se into the IL river valley by 12Z/7 am Friday. A
cluster of showers and thunderstorms along and nw of I-55 will
track se over rest of central and southeast IL rest of tonight,
and then diminish over nw CWA during overnight. Some storms could
have hail around 1 inch or a bit larger, wind gusts of 60 mph and
also getting some reports of wall clouds and funnel clouds nw of
IL State fairgrounds. Patchy fog expected to develop during
overnight in humid air mass. Lows overnight in the 68-72F range.

&&

.SHORT TERM...(This evening through Friday)
ISSUED AT 258 PM CDT Thu Aug 16 2018

Widely scattered showers and thunderstorms have developed across
central Illinois this afternoon...with a broken line of convection
further west across central Iowa in association with a vigorous
upper low. As the low pivots eastward, stronger synoptic forcing
will help increase the areal coverage of convection across the
KILX CWA from mid-evening through the overnight hours. With the
850mb jet streak increasing to 20-30kt and orienting itself toward
east-central and southeast Illinois after midnight, it appears the
greatest coverage of storms will materialize east of I-55
overnight. Based on latest CAMs, have started the evening with
just low chance PoPs...then have increased to high chance to
likely west of I-55 toward midnight. After midnight, have
shifted the likely PoPs to east of the I-55 corridor as the LLJ
cranks up. Overnight lows will be in the upper 60s and lower 70s.

Showers and thunderstorms will be ongoing across the E/SE Friday
morning, then will taper off from west to east toward midday.
Additional scattered activity will be possible through the
afternoon into the early evening as the upper low tracks through
the region. High temperatures will generally be in the lower 80s.
Once the low pushes off to the east, subsidence on its back side
will result in a return to dry conditions across the board by
Friday night.

.LONG TERM...(Friday night through Thursday)
ISSUED AT 258 PM CDT Thu Aug 16 2018

Warm and dry weather will be the rule over the upcoming weekend,
with high temperatures reaching the middle to upper 80s both
Saturday and Sunday. The next significant chance for rain will
hold off until late Sunday night into Monday as yet another
vigorous short-wave trough digs into the Midwest. Based on timing
of this wave, have gone with likely PoPs for showers/thunder
Monday afternoon. Once this wave passes, a few lingering showers
will be possible into Tuesday...followed by cooler/drier weather
for the middle of next week. Highs will drop into the middle to
upper 70s for Tuesday and Wednesday before moderating to the lower
80s by Thursday.

&&

.AVIATION...(For the 00Z TAFS through 00Z Friday evening)
Issued at 659 PM CDT Thu Aug 16 2018

Isolated to scattered thunderstorms are moving into areas of
central IL west of I-55 this evening. These thunderstorms will be
the main aviation impact initially tonight as they slowly cross
eastward through the area. Isolated MVFR or worse vsby and cigs as
well as strong gusty winds may be associated with any
thunderstorms. Overnight as thunderstorms diminish, fog will
develop after 06Z, and have included IFR vsby at KPIA, and MVFR at
sites farther southeast, until 14Z. Friday after 16-17Z,
additional thunderstorms will be possible, with higher
probabilities along the I-74 corridor terminals. Winds SW under 10
kts, becoming light and variable overnight, then shifting to NW
under 10 kts Friday after 15Z.

&&

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

UPDATE...07
SHORT TERM...Barnes
LONG TERM...Barnes
AVIATION...37

Hazardous Weather Outlook
National Weather Service Lincoln IL
329 PM CDT Thu Aug 16 2018

ILZ027>031-036>038-040>057-061>063-066>068-071>073-171100-
Cass-Champaign-Christian-Clark-Clay-Coles-Crawford-Cumberland-
De Witt-Douglas-Edgar-Effingham-Fulton-Jasper-Knox-Lawrence-Logan-
Macon-Marshall-Mason-McLean-Menard-Morgan-Moultrie-Peoria-Piatt-
Richland-Sangamon-Schuyler-Scott-Shelby-Stark-Tazewell-Vermilion-
Woodford-
329 PM CDT Thu Aug 16 2018

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

.DAY ONE...TONIGHT...

Scattered strong to severe storms are possible tonight as a
weather system moves across the state. A few of the storms tonight
could produce strong wind gusts, as well as locally heavy rainfall
and deadly lightning.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

Scattered thunderstorms will be possible Friday. No severe weather
is expected at this time. There will be periodic chances for
thunderstorms again starting Sunday night and continuing into
Tuesday of next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

Auten

Special Weather Statement
National Weather Service Lincoln IL
826 PM CDT THU AUG 16 2018

ILZ036-040-041-047-170200-
Mason-Schuyler-Cass-Fulton-
826 PM CDT THU AUG 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FULTON...NORTH
CENTRAL CASS...NORTHEASTERN SCHUYLER AND SOUTHWESTERN MASON COUNTIES
UNTIL 900 PM CDT...

At 825 PM CDT, Doppler radar was tracking a strong thunderstorm over
Astoria, or 12 miles northeast of Rushville, moving east at 20 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Astoria, Ipava, Browning, Marbletown, Bluff City and Snicarte.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4016 9053 4036 9035 4031 9008 4003 9029
TIME...MOT...LOC 0125Z 288DEG 15KT 4021 9035

37

Special Weather Statement
National Weather Service Lincoln IL
834 PM CDT THU AUG 16 2018

ILZ047-048-170200-
Menard-Cass-
834 PM CDT THU AUG 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MENARD...NORTHWESTERN
SANGAMON AND EAST CENTRAL CASS COUNTIES UNTIL 900 PM CDT...

At 833 PM CDT, Doppler radar was tracking a strong thunderstorm near
Tallula, or 15 miles east of Virginia, moving east at 15 mph.

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

Locations impacted include...
Petersburg, Tallula, Newmansville, Lincolns New Salem and Atterberry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4008 9003 4011 8977 3990 8977 3990 9003
TIME...MOT...LOC 0133Z 269DEG 15KT 3999 8993

37

Special Weather Statement
National Weather Service Lincoln IL
842 PM CDT THU AUG 16 2018

ILZ048-170215-
Menard-
842 PM CDT THU AUG 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR MENARD...NORTHWESTERN SANGAMON
AND EASTERN CASS COUNTIES UNTIL 915 PM CDT...

At 842 PM CDT, Doppler radar was tracking a strong thunderstorm near
Petersburg, or 16 miles east of Virginia, moving east at 15 mph.

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

Locations impacted include...
Petersburg, Athens, Greenview, Tallula, Lincolns New Salem and
Atterberry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4012 8972 3992 8973 3992 8977 3990 8977
      3990 8999 4008 9000
TIME...MOT...LOC 0142Z 269DEG 15KT 4000 8991

37

Special Weather Statement
National Weather Service Lincoln IL
936 PM CDT THU AUG 16 2018

ILZ041-047-048-170315-
Mason-Menard-Cass-
936 PM CDT THU AUG 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MENARD...EASTERN
CASS...SOUTHWESTERN MASON AND NORTHEASTERN MORGAN COUNTIES UNTIL 1015
PM CDT...

At 936 PM CDT, Doppler radar was tracking a strong thunderstorm over
Chandlerville, or 9 miles north of Virginia, moving southeast at 20
mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Chandlerville, Bath, Kilbourne, Oakford, Philadelphia, Newmansville
and Atterberry.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4019 9016 4009 8980 3987 9004 3987 9009
      4004 9029
TIME...MOT...LOC 0236Z 302DEG 15KT 4008 9015

37

Special Weather Statement
National Weather Service Lincoln IL
957 PM CDT THU AUG 16 2018

ILZ042-051-170330-
Logan-Sangamon-
957 PM CDT THU AUG 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LOGAN...NORTHWESTERN
CHRISTIAN AND NORTHEASTERN SANGAMON COUNTIES UNTIL 1030 PM CDT...

At 957 PM CDT, Doppler radar was tracking a strong thunderstorm over
Riverton, or 7 miles northeast of Springfield, moving east at 25 mph.

Nickel size hail will be possible with this storm.

Locations impacted include...
Springfield, Sherman, Riverton, Williamsville, Mechanicsburg,
Grandview, Spaulding, Dawson, Buffalo, Clear Lake and Roby.

This includes the following highways...
 Interstate 55 between mile markers 98 and 103, and between mile
markers 107 and 108.
 Interstate 72 between mile markers 104 and 121.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3995 8956 3989 8925 3977 8932 3977 8936
      3976 8936 3974 8939 3974 8941 3976 8942
      3971 8943 3983 8963
TIME...MOT...LOC 0257Z 289DEG 20KT 3986 8954

37

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1022 PM CDT THU AUG 16 2018

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

0918 PM     HAIL             3 SSW ATHENS            39.92N 89.75W
08/16/2018  E1.75 INCH       MENARD             IL   PUBLIC

&&

07