Alert archive / Illinois / Tornado Warnings in 2007

Tornado Warning 20, NWS Lincoln, IL

October 2, 2007Morgan County, Scott County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 2, 2007, 8:15 PM CDT for Morgan County, Scott County, Illinois. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 2, 2007, 8:15 PM CDT (01:15 UTC)
Expired: Oct 2, 2007, 9:00 PM CDT
In force: 45 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

Counties Morgan County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 85 km from the middle of the area, began a volume at 01:17 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 watch it was issued in

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

Issued	Product	Office	Lasted
Oct 2, 5:47 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.3 hours before the alert went out and 137 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 15 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 1487 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 257 m²/s²
0-3 km storm-relative helicity: 306 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 030115
TORILX
ILC137-171-030200-
/O.NEW.KILX.TO.W.0020.071003T0115Z-071003T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
815 PM CDT TUE OCT 2 2007

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN SCOTT COUNTY IN WEST CENTRAL ILLINOIS...
  SOUTHEASTERN MORGAN COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 900 PM CDT.

* AT 815 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHWEST OF MANCHESTER...OR ABOUT 2 MILES NORTH OF WHITE HALL...
  MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MANCHESTER...
  MURRAYVILLE...
  FRANKLIN...
  ALEXANDER...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
1 INCH SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT TUESDAY EVENING
FOR WEST CENTRAL ILLINOIS.

LAT...LON 3975 9001 3961 8995 3953 8993 3952 9041
TIME...MOT...LOC 0115Z 244DEG 31KT 3949 9034

$$

GOETSCH

3 follow-up statements

000 
WWUS53 KILX 030132
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
832 PM CDT TUE OCT 2 2007

ILC171-030142-
/O.CAN.KILX.TO.W.0020.000000T0000Z-071003T0200Z/
SCOTT-
832 PM CDT TUE OCT 2 2007

...THE TORNADO WARNING FOR SOUTHEASTERN SCOTT COUNTY IS CANCELLED...

AT 828 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.

LAT...LON 3964 9020 3969 9012 3969 9011 3975 9001
      3961 8995 3953 8993 3952 9024
TIME...MOT...LOC 0132Z 244DEG 31KT 3955 9015

$$

ILC137-030200-
/O.CON.KILX.TO.W.0020.000000T0000Z-071003T0200Z/
MORGAN-
832 PM CDT TUE OCT 2 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN MORGAN COUNTY...

AT 828 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO THREAT WAS LOCATED 3 MILES SOUTHWEST OF NORTONVILLE...OR
ABOUT 13 MILES NORTHEAST OF WHITE HALL...MOVING NORTHEAST AT 35 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  FRANKLIN...
  WAVERLY...
  ALEXANDER...

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT...BECAUSE THEY ARE HARD
TO SEE. DO NOT WAIT UNTIL YOU CAN SEE OR HEAR THE TORNADO...AS IT MAY
BE TOO LATE. INSTEAD...TAKE COVER IN A REINFORCED BUILDING. GO TO A
BASEMENT OR INTERIOR ROON ON THE LOWEST FLOOR.

LAT...LON 3964 9020 3969 9012 3969 9011 3975 9001
      3961 8995 3953 8993 3952 9024
TIME...MOT...LOC 0132Z 244DEG 31KT 3955 9015

$$

GOETSCH

000 
WWUS53 KILX 030148
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
848 PM CDT TUE OCT 2 2007

ILC137-030200-
/O.CON.KILX.TO.W.0020.000000T0000Z-071003T0200Z/
MORGAN-
848 PM CDT TUE OCT 2 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR
SOUTHEASTERN MORGAN COUNTY...

AT 843 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
TORNADO THREAT WAS LOCATED 4 MILES SOUTH OF FRANKLIN...OR ABOUT 14
MILES SOUTHEAST OF JACKSONVILLE...MOVING EAST AT 25 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  WAVERLY...

WHEN A TORNADO WARNING IS ISSUED...IT MEANS THAT STRONG ROTATION HAS
BEEN DETECTED IN THE STORM. 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.

LAT...LON 3966 9009 3972 9000 3967 8998 3966 8998
      3965 8997 3961 8995 3953 8993 3952 9011
TIME...MOT...LOC 0148Z 249DEG 23KT 3958 9002

$$

GOETSCH

000 
WWUS53 KILX 030200
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
901 PM CDT TUE OCT 2 2007

ILC137-030211-
/O.EXP.KILX.TO.W.0020.000000T0000Z-071003T0200Z/
MORGAN-
901 PM CDT TUE OCT 2 2007

...THE TORNADO WARNING FOR SOUTHEASTERN MORGAN COUNTY EXPIRES AT 900
PM CDT...

AT 900 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED THAT
THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD WEAKENED...THUS
THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3966 9009 3972 9000 3967 8998 3966 8998
      3965 8997 3961 8995 3953 8993 3952 9011
TIME...MOT...LOC 0148Z 249DEG 23KT 3958 9002

$$

GOETSCH

Nearby

Tornado Warnings in Illinois, 2007 Every tornado warning in 2007 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.