Alert archive / Illinois / Tornado Warnings in 2007

Tornado Warning 25, NWS Lincoln, IL

October 18, 2007Champaign County, Douglas County, Vermilion County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 18, 2007, 6:26 PM CDT for Champaign County, Douglas County, Vermilion County, Illinois. It was in force for 34 min. 2 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
Oct 18, 2007, 6:26 PM CDT (23:26 UTC)
Expired
Oct 18, 2007, 7:00 PM CDT
In force
34 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon

Counties Champaign County, IL, Douglas County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 109 km from the middle of the area, began a volume at 23:29 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
Oct 18, 6:55 PM CDTTSTM WND DMGOgden, ILPOWERLINES DOWN IN OGDEN...ALSO 6 INCH TREE LIMBS DOWN. MEASURES 58 MPH WIND GUST
Oct 18, 6:57 PM CDTTSTM WND GST 58Ogden, IL

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 18, 3:23 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.4 hours before the alert went out and 47 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 2007-10-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 44 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2007-10-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 282 square meters per square second.1939587897117Sfc1 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
44 J/kg
Mixed-layer CIN
-272 J/kg
Mixed-layer LCL
1498 m above ground
0-6 km bulk shear
84 kt
0-1 km storm-relative helicity
282 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS53 KILX 182327
TORILX
ILC019-041-183-190000-
/O.NEW.KILX.TO.W.0025.071018T2326Z-071019T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
626 PM CDT THU OCT 18 2007

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN DOUGLAS COUNTY IN EAST CENTRAL ILLINOIS...
  SOUTHERN CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...
  WESTERN VERMILION COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 700 PM CDT.

* AT 626 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR PESOTUM...
  OR ABOUT 7 MILES NORTH OF TUSCOLA...MOVING NORTHEAST AT 50 MPH.
  THIS STORM HAS A HISTORY OF PRODUCING FUNNEL CLOUDS.

* LOCATIONS IMPACTED INCLUDE...
  TOLONO...
  SAVOY...
  PHILO...
  CHAMPAIGN...
  URBANA...
  SIDNEY...
  HOMER...
  ST. JOSEPH...
  FITHIAN...

OTHER LOCATIONS IN THE WARNING INCLUDE...FAIRMOUNT...OAKWOOD AND
OGDEN.

ADDITIONAL DEVELOPMENT OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING
TORNADOES...IS LIKELY IN THE WARNED AREA.

WHEN A TORNADO WARNING IS ISSUED...IT MEANS THAT STRONG ROTATION HAS
BEEN DETECTED IN THE STORM...AND ATMOSPHERIC CONDITIONS SUPPORT THAT
ROTATION REACHING THE GROUND. A TORNADO MAY ALREADY BE ON THE
GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF
THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE
BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER
UNDER A HIGHWAY OVERPASS.

REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL EMERGENCY
MANAGER...OR THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 4031 8794 4010 8772 3982 8826 3998 8842
TIME...MOT...LOC 2326Z 231DEG 46KT 3992 8823

$$

GEELHART/BARKER
2 follow-up statements
000 
WWUS53 KILX 182342
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
641 PM CDT THU OCT 18 2007

ILC041-182351-
/O.CAN.KILX.TO.W.0025.000000T0000Z-071019T0000Z/
DOUGLAS-
641 PM CDT THU OCT 18 2007

...THE TORNADO WARNING FOR NORTHERN DOUGLAS COUNTY IS CANCELLED...

AT 638 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED THAT
THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD MOVED OUT OF THE
AREA...THUS THE WARNING HAS BEEN CANCELLED.

MUCH OF CENTRAL AND SOUTHERN DOUGLAS COUNTY IS IN A TORNADO WARNING...
FROM A STORM CURRENTLY LOCATED NEAR MATTOON.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 11 PM.

LAT...LON 4010 8772 3990 8810 4004 8826 4031 8794
TIME...MOT...LOC 2341Z 231DEG 46KT 4004 8803

$$

ILC019-183-190000-
/O.CON.KILX.TO.W.0025.000000T0000Z-071019T0000Z/
CHAMPAIGN-VERMILION-
641 PM CDT THU OCT 18 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR WESTERN
VERMILION AND EASTERN CHAMPAIGN COUNTIES...

AT 638 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO THREAT WAS LOCATED NEAR SIDNEY...OR ABOUT 12 MILES SOUTHEAST
OF CHAMPAIGN...MOVING NORTHEAST AT 50 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  FITHIAN...
  OGDEN...
  ROYAL...
  FAIRMOUNT...
  OAKWOOD...

OTHER LOCATIONS AFFECTED INCLUDE...ST. JOSEPH...PHILO AND HOMER.

ADDITIONAL DEVELOPMENT OF SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING
LARGE HAIL AND DAMAGING WINDS...IS LIKELY IN THE WARNED AREA.

DO NOT USE HIGHWAY OVERPASSES FOR SHELTER. OVERPASSES DO NOT PROVIDE
PROTECTION FROM TORNADIC WINDS. VEHICLES STOPPED UNDER BRIDGES BLOCK
TRAFFIC AND PREVENT PEOPLE FROM GETTING OUT OF THE STORMS PATH AND
TO SHELTER. IF YOU CANNOT DRIVE AWAY FROM THE TORNADO...GET OUT OF
YOUR VEHICLE AND LIE FLAT IN A DITCH AS A LAST RESORT.

LAT...LON 4010 8772 3990 8810 4004 8826 4031 8794
TIME...MOT...LOC 2341Z 231DEG 46KT 4004 8803

$$

GEELHART/BARKER
000 
WWUS53 KILX 190002
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
702 PM CDT THU OCT 18 2007

ILC019-183-190012-
/O.EXP.KILX.TO.W.0025.000000T0000Z-071019T0000Z/
CHAMPAIGN-VERMILION-
702 PM CDT THU OCT 18 2007

...THE TORNADO WARNING FOR EASTERN CHAMPAIGN COUNTY EXPIRES AT 
700 PM CDT...

AT 657 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED THAT
THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD MOVED OUT OF THE
AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

THE TORNADO WARNING FOR WESTERN VERMILION COUNTY HAS BEEN EXTENDED
UNTIL 730 PM.

LAT...LON 4010 8772 3990 8810 4004 8826 4031 8794
TIME...MOT...LOC 2342Z 231DEG 46KT 4005 8801

$$

GEELHART/BARKER

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 1:22 AM CDTSevere Thunderstorm WarningILXMorgan, Scott38 min
Oct 18, 2:01 AM CDTSevere Thunderstorm WarningILXMorgan, Sangamon44 min
Oct 18, 3:58 AM CDTSevere Thunderstorm WarningILXClay, Effingham, Jasper, Richland32 min
Oct 18, 4:08 AM CDTSevere Thunderstorm WarningILXColes, Cumberland, Shelby37 min
Oct 18, 4:20 AM CDTSevere Thunderstorm WarningILXCrawford, Jasper, Lawrence, Richland40 min
Oct 18, 4:34 AM CDTTornado WarningILXColes, Douglas26 min
Oct 18, 4:51 AM CDTSevere Thunderstorm WarningILXChampaign, Douglas, Edgar, Vermilion39 min
Oct 18, 4:53 AM CDTSevere Thunderstorm WarningILXClark, Edgar29 min
Oct 18, 5:28 AM CDTSevere Thunderstorm WarningILXVermilion32 min
Oct 18, 9:36 AM CDTWind AdvisoryILXCass, Champaign, Christian, Clark, Clay, Coles and 29 more6 hr
Oct 18, 4:45 PM CDTSevere Thunderstorm WarningILXChristian, Macon, Moultrie, Shelby45 min
Oct 18, 4:49 PM CDTSevere Thunderstorm WarningILXChristian, DeWitt, Macon, Piatt41 min
Oct 18, 5:19 PM CDTSevere Thunderstorm WarningILXChristian, Macon41 min
Oct 18, 5:24 PM CDTSevere Thunderstorm WarningILXChampaign, Macon, Piatt35 min
Oct 18, 5:33 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas, Macon, Moultrie, Piatt, Shelby42 min
Oct 18, 5:47 PM CDTTornado WarningILXChampaign, Douglas, Macon, Moultrie, Piatt, Shelby43 min
Oct 18, 5:49 PM CDTTornado WarningILXColes, Cumberland, Effingham, Shelby41 min
Oct 18, 5:50 PM CDTSevere Thunderstorm WarningILXChampaign, DeWitt, McLean, Piatt40 min
Oct 18, 6:20 PM CDTTornado WarningILXColes, Cumberland, Douglas, Moultrie40 min
Oct 18, 6:57 PM CDTTornado WarningILXColes, Douglas, Edgar, Vermilion48 min
Oct 18, 6:58 PM CDTTornado WarningILXVermilion32 min

Nearby

Tornado Warnings in Illinois, 2007Every tornado warning in 2007Tornadoes in 2007

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.