Alert archive / Illinois / Tornado Warnings in 2008

Tornado Warning 61, NWS Lincoln, IL

July 21, 2008Peoria County, Tazewell County, Illinois

NWS Lincoln, IL issued this tornado warning at Jul 21, 2008, 5:33 AM CDT for Peoria County, Tazewell County, Illinois. It was in force for 27 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: Jul 21, 2008, 5:33 AM CDT (10:33 UTC)
Expired: Jul 21, 2008, 6:00 AM CDT
In force: 27 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon

Counties Peoria County, IL, Tazewell County, IL

The radar

The Lincoln radar (KILX), 45 km from the middle of the area, began a volume at 10:34 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
Jul 21, 4:21 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 10.6 hours before the alert went out and 87 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: 4332 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 950 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 12.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KILX 211033
TORILX
ILC143-179-211100-
/O.NEW.KILX.TO.W.0061.080721T1033Z-080721T1100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
533 AM CDT MON JUL 21 2008

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL TAZEWELL COUNTY IN CENTRAL ILLINOIS...
  EXTREME SOUTHERN PEORIA COUNTY IN CENTRAL ILLINOIS...

* UNTIL 600 AM CDT.

* AT 533 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES WEST OF
  PEKIN...MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PEKIN...
  MARQUETTE HEIGHTS...
  TREMONT...
  MORTON...
  MACKINAW...
  HOPEDALE...

OTHER LOCATIONS IN THE WARNING INCLUDE...SOUTH PEKIN.

THIS INCLUDES INTERSTATE 155 BETWEEN MILE MARKERS 16 AND 31.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON CDT MONDAY
FOR ILLINOIS.

LAT...LON 4061 8930 4036 8933 4047 8979 4063 8974
TIME...MOT...LOC 1033Z 281DEG 35KT 4055 8965

$$

SMITH

2 follow-up statements

000 
WWUS53 KILX 211042
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
542 AM CDT MON JUL 21 2008

ILC143-179-211100-
/O.CON.KILX.TO.W.0061.000000T0000Z-080721T1100Z/
PEORIA-TAZEWELL-
542 AM CDT MON JUL 21 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 AM CDT FOR EXTREME
SOUTHERN PEORIA AND CENTRAL TAZEWELL COUNTIES...

AT 539 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 3 MILES WEST OF
DILLON...OR ABOUT 6 MILES SOUTH OF PEKIN...MOVING EAST AT 40 MPH.

PEOPLE NEAR THESE LOCATIONS ARE STILL THREATENED...
  HOPEDALE...
  MACKINAW...

OTHER LOCATIONS AFFECTED INCLUDE...NORTH PEKIN...TREMONT...SOUTH
PEKIN...POWERTON...MORTON...MARQUETTE HEIGHTS...MAPLETON AND
GROVELAND.

THIS INCLUDES INTERSTATE 155 BETWEEN MILE MARKERS 16 AND 31.

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

LAT...LON 4061 8930 4036 8933 4047 8979 4063 8974
TIME...MOT...LOC 1042Z 281DEG 35KT 4048 8955

$$

SMITH

000 
WWUS53 KILX 211100
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
600 AM CDT MON JUL 21 2008

ILC143-179-211110-
/O.EXP.KILX.TO.W.0061.000000T0000Z-080721T1100Z/
PEORIA-TAZEWELL-
600 AM CDT MON JUL 21 2008

...THE TORNADO WARNING FOR EXTREME SOUTHERN PEORIA AND CENTRAL
TAZEWELL COUNTIES EXPIRES AT 600 AM CDT...

AT 558 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE THUNDERSTORM THAT HAD PROMPTED THE WARNING HAD MOVED OUT OF THE
AREA...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 4061 8930 4036 8933 4047 8979 4063 8974
TIME...MOT...LOC 1100Z 281DEG 35KT 4044 8933

$$

SMITH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 4:28 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox	47 min
Jul 21, 4:47 AM CDT	Severe Thunderstorm Warning	ILX	Fulton	28 min
Jul 21, 5:16 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason, Peoria, Tazewell	44 min
Jul 21, 5:18 AM CDT	Severe Thunderstorm Warning	ILX	Peoria, Tazewell, Woodford	42 min
Jul 21, 5:45 AM CDT	Severe Thunderstorm Warning	ILX	Logan, McLean, Mason, Tazewell	45 min
Jul 21, 5:51 AM CDT	Severe Thunderstorm Warning	ILX	McLean, Tazewell, Woodford	39 min
Jul 21, 5:52 AM CDT	Severe Thunderstorm Warning	ILX	Knox, Stark	53 min
Jul 21, 6:18 AM CDT	Severe Thunderstorm Warning	ILX	DeWitt, McLean, Piatt	42 min
Jul 21, 6:24 AM CDT	Severe Thunderstorm Warning	ILX	Peoria	36 min
Jul 21, 6:31 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox	26 min
Jul 21, 6:39 AM CDT	Severe Thunderstorm Warning	ILX	Marshall	36 min
Jul 21, 6:46 AM CDT	Severe Thunderstorm Warning	ILX	Fulton, Marshall, Peoria, Tazewell, Woodford	29 min
Jul 21, 7:12 AM CDT	Severe Thunderstorm Warning	ILX	McLean, Marshall, Tazewell, Woodford	48 min
Jul 21, 7:44 AM CDT	Severe Thunderstorm Warning	ILX	Edgar, Vermilion	20 min

Nearby

Tornado Warnings in Illinois, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.