Alert archive / Illinois / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 164, NWS Lincoln, IL

August 18, 2019Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Aug 18, 2019, 3:47 PM CDT for Champaign County, Vermilion County, Illinois. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 18, 2019, 3:47 PM CDT (20:47 UTC)
Expired
Aug 18, 2019, 4:45 PM CDT
In force
58 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 117 km from the middle of the area, began a volume at 20:49 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.8 hours before the alert went out and 54 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2019-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1407 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2019-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1407 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
1396 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
3 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lincoln, IL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 18, 12:48 PM CDT, 2 hours 59 minutes earlier.

Area forecast discussion, Aug 18, 12:48 PM CDT, 2 hours 59 minutes before
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Hazardous weather outlook, Aug 18, 3:11 PM CDT, 36 minutes before
Hazardous Weather Outlook
National Weather Service Lincoln IL
311 PM CDT Sun Aug 18 2019

ILZ027>031-036>038-040>055-061-191100-
Cass-Champaign-Christian-De Witt-Douglas-Fulton-Knox-Logan-Macon-
Marshall-Mason-McLean-Menard-Morgan-Moultrie-Peoria-Piatt-
Sangamon-Schuyler-Scott-Shelby-Stark-Tazewell-Vermilion-Woodford-
311 PM CDT Sun Aug 18 2019

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

.DAY ONE...TONIGHT...

Isolated thunderstorms are possible through tonight. Dangerous
lightning will accompany any thunderstorms, however severe weather
is not expected.

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

Periodic scattered thunderstorms are possible Monday through
Thursday. Severe storms are possible on Tuesday, with damaging
winds and large hail possible.

Hot and humid conditions will set up over the area Tuesday, when
afternoon heat indices of 100 to 105 degrees are expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated through tonight.

ILZ056-057-062-063-066>068-071>073-191100-
Clark-Clay-Coles-Crawford-Cumberland-Edgar-Effingham-Jasper-
Lawrence-Richland-
311 PM CDT Sun Aug 18 2019

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

.DAY ONE...TONIGHT...

Scattered thunderstorms are possible today into this evening.
Some of the storms may be severe with potential for large hail and
damaging wind gusts. Locally heavy downpours are possible as well,
and may lead to flash flooding.

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

Periodic scattered thunderstorms are possible Monday through
Thursday. Severe storms are possible on Tuesday, with damaging
winds and large hail possible.

Hot and humid conditions will set up over the area Tuesday, when
afternoon heat indices of 100 to 105 degrees are expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible this evening or tonight.

37

In the hours before

Local storm report, Aug 18, 12:23 PM CDT, 3 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LINCOLN IL
1223 PM CDT SUN AUG 18 2019

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

0745 AM     TSTM WND DMG     LINCOLN                 40.15N 89.37W
08/17/2019                   LOGAN              IL   NWS EMPLOYEE

            BROKEN TREE LIMB DAMAGED POWER LINE ON ADAMS STREET.
            CORRECTED TIME.

&&

25
Special weather statement, Aug 18, 3:41 PM CDT, 6 minutes before
Special Weather Statement
National Weather Service Lincoln IL
341 PM CDT Sun Aug 18 2019

ILZ045-046-182145-
Vermilion-Champaign-
341 PM CDT Sun Aug 18 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN VERMILION AND
SOUTHEASTERN CHAMPAIGN COUNTIES UNTIL 445 PM CDT...

At 340 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near St. Joseph to near Broadlands. Movement
was east at 35 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Danville, St. Joseph, Georgetown, Westville, Tilton, Catlin, Oakwood,
Sidney, Homer, Ridge Farm, Ogden, Fairmount, Sidell, Fithian,
Belgium, Broadlands, Allerton, Muncie, Bismarck and Indianola.

This includes Interstate 74 between mile markers 190 and 220.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3991 8811 4010 8815 4032 8753 3990 8753
TIME...MOT...LOC 2040Z 258DEG 31KT 4008 8809 3994 8807

Goetsch

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 17, 7:57 PM CDTSpecial Weather StatementILXClay48 min
Aug 17, 8:06 PM CDTSevere Thunderstorm WarningILXClay39 min
Aug 17, 8:48 PM CDTSpecial Weather StatementILXEffingham42 min
Aug 17, 9:28 PM CDTSpecial Weather StatementILXClark32 min
Aug 17, 9:33 PM CDTSevere Thunderstorm WarningILXClark28 min
Aug 18, 3:41 PM CDTSpecial Weather StatementILXVermilion64 min
Aug 18, 5:03 PM CDTFlash Flood WarningILXVermilion3 hr
Aug 18, 5:08 PM CDTSevere Thunderstorm WarningILXEdgar54 min
Aug 18, 5:40 PM CDTFlash Flood WarningILXEdgar3 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2019Every severe thunderstorm warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.