Alert archive / Illinois / Tornado Warnings in 2015

Tornado Warning 3, NWS Lincoln, IL

April 9, 2015Christian County, Sangamon County, Illinois

NWS Lincoln, IL issued this tornado warning at Apr 9, 2015, 7:24 PM CDT for Christian County, Sangamon County, Illinois. It was in force for 21 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: Apr 9, 2015, 7:24 PM CDT (00:24 UTC)
Expired: Apr 9, 2015, 7:45 PM CDT
In force: 21 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Christian County, IL, Sangamon County, IL

The radar

The Lincoln radar (KILX), 55 km from the middle of the area, began a volume at 00:27 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
Apr 9, 1:48 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.4 hours before the alert went out and 96 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: 1160 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1435 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 15.8

Open this sounding in Storm Lab

The text

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

190 
WFUS53 KILX 100024
TORILX
ILC021-167-100045-
/O.NEW.KILX.TO.W.0003.150410T0024Z-150410T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
724 PM CDT THU APR 9 2015

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* TORNADO WARNING FOR...
  WEST CENTRAL CHRISTIAN COUNTY IN CENTRAL ILLINOIS...
  CENTRAL SANGAMON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 745 PM CDT

* AT 721 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR DIVERNON...AND MOVING NORTHEAST AT 45 MPH.

  HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

  SOURCE...WEATHER SPOTTERS REPORTED A WALL CLOUD.

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
           TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
           LIKELY.

* THIS DANGEROUS STORM WILL BE NEAR...
  EDINBURG AROUND 740 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE SICILY...SANGCHRIS LAKE STATE
PARK AND BERRY.

THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 78 AND 90.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA.

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3981 8947 3964 8932 3952 8967 3963 8981
TIME...MOT...LOC 0022Z 240DEG 41KT 3960 8962

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

AUTEN

1 follow-up statement

016 
WWUS53 KILX 100043
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
743 PM CDT THU APR 9 2015

ILC021-167-100053-
/O.EXP.KILX.TO.W.0003.000000T0000Z-150410T0045Z/
SANGAMON IL-CHRISTIAN IL-
743 PM CDT THU APR 9 2015

...THE TORNADO WARNING FOR NORTHWESTERN CHRISTIAN AND CENTRAL
SANGAMON COUNTIES WILL EXPIRE AT 745 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 11 PM.

LAT...LON 3981 8947 3964 8932 3952 8967 3963 8981
TIME...MOT...LOC 0043Z 240DEG 41KT 3972 8935

$$

AUTEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 7:32 PM CDT	Tornado Warning	ILX	Marshall, Peoria, Woodford	28 min
Apr 9, 7:41 PM CDT	Tornado Warning	ILX	Christian, Macon	34 min
Apr 9, 7:57 PM CDT	Severe Thunderstorm Warning	ILX	Marshall, Woodford	33 min
Apr 9, 8:13 PM CDT	Tornado Warning	ILX	Christian, Macon, Moultrie, Shelby	32 min
Apr 9, 8:28 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland, Effingham, Shelby	47 min
Apr 9, 9:01 PM CDT	Severe Thunderstorm Warning	ILX	Piatt	18 min
Apr 9, 9:06 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Cumberland, Effingham, Jasper	39 min
Apr 9, 9:16 PM CDT	Severe Thunderstorm Warning	ILX	Champaign	28 min
Apr 9, 9:38 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper	52 min
Apr 9, 9:45 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Cumberland, Jasper	60 min
Apr 9, 10:26 PM CDT	Areal Flood Advisory	ILX	Clark, Cumberland	3 hr
Apr 9, 10:30 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford, Jasper	45 min
Apr 10, 10:25 AM CDT	River Flood Warning	ILX	Lawrence	4 days
Apr 10, 1:38 PM CDT	Wind Advisory	ILX	Fulton, Knox, McLean, Marshall, Peoria, Stark and 2 more	4 hr

Nearby

Tornado Warnings in Illinois, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.