Alert archive / Illinois / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 9, NWS Lincoln, IL

May 9, 2018Champaign County, Piatt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 9, 2018, 7:16 PM CDT for Champaign County, Piatt County, Illinois. It was in force for 44 min. 10 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 9, 2018, 7:16 PM CDT (00:16 UTC)
Expired
May 9, 2018, 8:00 PM CDT
In force
44 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Champaign County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 85 km from the middle of the area, began a volume at 00:18 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.

What was reported inside it

TimeReportWhereRemark
May 9, 7:18 PM CDTTSTM WND DMG1 W Mahomet, ILTREE BLOWN DOWN IN MAHOMET BY STRONG WINDS WITH THE LINE OF STORMS
May 9, 7:20 PM CDTTSTM WND GST 45Mahomet, IL
May 9, 7:25 PM CDTTSTM WND DMGLake Of The Woods, ILTREE BLEW OVER ROAD.
May 9, 7:26 PM CDTTSTM WND GST 61Lake Of The Woods, IL
May 9, 7:34 PM CDTTSTM WND DMG2 Nw Champaign, ILSEMI TRUCK BLOWN OVER ON STALEY ROAD
May 9, 7:34 PM CDTTSTM WND DMG3 Nw Champaign, IL3 INCH DIAMETER TREE BRANCH TORN OFF.
May 9, 7:45 PM CDTHAIL 0.75Champaign, ILRELAYED FROM LOCAL MEDIA.
May 9, 7:47 PM CDTTSTM WND DMGChampaign, ILMULTIPLE TREES DAMAGED ALONG US-150 AND AT PARKLAND COLLEGE.
May 9, 7:49 PM CDTTSTM WND GST 63Willard Airport, IL
May 9, 7:51 PM CDTHAIL 0.751 Se Champaign, IL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.3 hours before the alert went out and 22 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 00:00Z on 2018-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 00:00Z on 2018-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.193958Sfc1 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
13 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
2099 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

426 
WUUS53 KILX 100016
SVRILX
ILC019-147-100100-
/O.NEW.KILX.SV.W.0009.180510T0016Z-180510T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Lincoln IL
716 PM CDT WED MAY 9 2018

The National Weather Service in Lincoln has issued a

* Severe Thunderstorm Warning for...
  Northeastern Piatt County in central Illinois...
  Southwestern Champaign County in east central Illinois...

* Until 800 PM CDT

* At 716 PM CDT, severe thunderstorms were located along a line
  extending from Mansfield to near Monticello, moving east at 25 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...
  Champaign, Monticello, Urbana, Savoy, Mahomet, Thomasboro,
  Mansfield, Bondville, Lake Of The Woods, Seymour, White Heath,
  Willard Airport, Galesville and Lodge.

This includes the following highways...
 Interstate 57 between mile markers 225 and 244.
 Interstate 72 between mile markers 167 and 182.
 Interstate 74 between mile markers 166 and 183.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Lincoln.

&&

LAT...LON 4023 8815 3997 8829 4007 8862 4025 8849
TIME...MOT...LOC 0016Z 277DEG 20KT 4021 8847 4008 8858 

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

Geelhart
1 follow-up statement
523 
WWUS53 KILX 100029
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
729 PM CDT WED MAY 9 2018

ILC019-147-100100-
/O.CON.KILX.SV.W.0009.000000T0000Z-180510T0100Z/
Piatt-Champaign-
729 PM CDT WED MAY 9 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR EAST CENTRAL PIATT AND SOUTHWESTERN CHAMPAIGN COUNTIES...

At 728 PM CDT, severe thunderstorms were located along a line
extending from Lake Of The Woods to White Heath, moving east at 30
mph.

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

SOURCE...Radar indicated. At 720 pm, dime size hail was reported
         at Mahomet, and a 45 mph wind gust was reported at Lake 
         of the Woods at 716 pm.

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

Locations impacted include...
Champaign, Monticello, Urbana, Savoy, Mahomet, Bondville, Lake Of The
Woods, Seymour, White Heath and Willard Airport.

This includes the following highways...
 Interstate 57 between mile markers 225 and 244.
 Interstate 72 between mile markers 167 and 182.
 Interstate 74 between mile markers 171 and 183.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Lincoln.

&&

LAT...LON 4023 8815 3997 8829 4005 8857 4023 8841
TIME...MOT...LOC 0028Z 278DEG 27KT 4020 8836 4007 8847 

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

Geelhart

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 7:21 PM CDTSevere Thunderstorm WarningILXChampaign, Macon, Piatt39 min
May 9, 7:43 PM CDTSevere Thunderstorm WarningILXChampaign, Vermilion32 min
May 9, 8:14 PM CDTSpecial Weather StatementILXMoultrie46 min
May 9, 8:20 PM CDTAreal Flood AdvisoryILXChampaign3 hr
May 9, 8:24 PM CDTSpecial Weather StatementILXDouglas36 min
May 9, 8:31 PM CDTSevere Thunderstorm WarningILXDouglas44 min
May 9, 8:44 PM CDTSevere Thunderstorm WarningILXColes, Douglas, Edgar46 min
May 9, 8:48 PM CDTSevere Thunderstorm WarningILXColes, Cumberland, Effingham, Moultrie, Shelby42 min
May 9, 9:48 PM CDTSpecial Weather StatementILXClark27 min
May 9, 10:22 PM CDTSpecial Weather StatementILXCrawford23 min
May 10, 5:57 PM CDTSpecial Weather StatementILXClay48 min
May 10, 6:26 PM CDTSpecial Weather StatementILXRichland49 min
May 10, 6:33 PM CDTSevere Thunderstorm WarningILXLawrence, Richland42 min
May 10, 6:56 PM CDTSpecial Weather StatementILXClay49 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2018Every severe thunderstorm warning in 2018

Sources

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