Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 49, NWS Lincoln, IL

April 19, 20114 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 19, 2011, 8:46 PM CDT for 4 counties in Illinois. It was in force for 59 min. 4 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: Apr 19, 2011, 8:46 PM CDT (01:46 UTC)
Expired: Apr 19, 2011, 9:45 PM CDT
In force: 59 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clark County, IL, Crawford County, IL, Cumberland County, IL, Jasper County, IL

The radar

The Evansville,IN radar (KVWX), 111 km from the middle of the area, began a volume at 01:50 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

Time	Report	Where	Remark
Apr 19, 8:51 PM CDT	HAIL 0.75	Greenup, IL
Apr 19, 9:10 PM CDT	HAIL 1	3 Sw Martinsville, IL	SPOTTER REPORTED 5 MINUTES OF QUARTER SIZED HAIL.
Apr 19, 9:13 PM CDT	HAIL 0.88	Martinsville, IL
Apr 19, 9:23 PM CDT	HAIL 1.25	2 N Marshall, 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.

Issued	Product	Office	Lasted
Apr 19, 1:00 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.8 hours before the alert went out and 126 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: 2409 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 523 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: 370 m²/s²
0-3 km storm-relative helicity: 547 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 24.4

Open this sounding in Storm Lab

The text

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

634 
WUUS53 KILX 200146
SVRILX
ILC023-033-035-079-200245-
/O.NEW.KILX.SV.W.0049.110420T0146Z-110420T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
846 PM CDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLARK COUNTY IN EAST CENTRAL ILLINOIS...
  NORTHWESTERN CRAWFORD COUNTY IN EAST CENTRAL ILLINOIS...
  CUMBERLAND COUNTY IN EAST CENTRAL ILLINOIS...
  NORTHERN JASPER COUNTY IN SOUTHEAST ILLINOIS...

* UNTIL 945 PM CDT.

* AT 845 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM MARSHALL TO TOLEDO...AND MOVING
  SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MARSHALL...CASEY...MARTINSVILLE...GREENUP...DENNISON...HIDALGO...
  HAZEL DELL...WEST UNION...ANNAPOLIS...GILA...LINCOLN TRAIL STATE
  PARK...YALE...DARWIN...ORANGE...BELLAIR...WEST YORK AND YORK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING
FOR SOUTHEASTERN ILLINOIS.

LAT...LON 3933 8755 3934 8758 3931 8761 3930 8759
      3926 8760 3926 8757 3922 8757 3914 8765
      3912 8763 3911 8764 3911 8831 3926 8844
      3948 8755 3935 8754
TIME...MOT...LOC 0146Z 294DEG 21KT 3942 8766 3924 8823
WIND...HAIL 60MPH 1.00IN

$$

CHURCHILL

1 follow-up statement

395 
WWUS53 KILX 200210
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
910 PM CDT TUE APR 19 2011

ILC023-033-035-079-200245-
/O.CON.KILX.SV.W.0049.000000T0000Z-110420T0245Z/
JASPER IL-CLARK IL-CRAWFORD IL-CUMBERLAND IL-
910 PM CDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CUMBERLAND...
NORTHWESTERN CRAWFORD...CLARK AND NORTHERN JASPER COUNTIES UNTIL 945
PM CDT...

AT 909 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM DENNISON TO MONTROSE...MOVING
SOUTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  GREENUP...JEWETT...HAZEL DELL...HIDALGO...WEST UNION...ANNAPOLIS...
  LINCOLN TRAIL STATE PARK...WOODBURY...GILA...DARWIN...ORANGE...
  BELLAIR...YALE...WEST YORK AND YORK.

THIS INCLUDES INTERSTATE 70 BETWEEN MILE MARKERS 105 AND 153.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 3933 8755 3934 8758 3931 8761 3930 8759
      3926 8760 3926 8757 3922 8757 3914 8765
      3912 8763 3911 8831 3926 8844 3948 8755
      3935 8754
TIME...MOT...LOC 0210Z 294DEG 21KT 3941 8753 3922 8837
WIND...HAIL 60MPH 1.00IN

$$

CHURCHILL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 7:00 PM CDT	Tornado Warning	ILX	Coles, Douglas, Moultrie, Piatt, Shelby	45 min
Apr 19, 7:02 PM CDT	Flash Flood Warning	ILX	Christian, Shelby	6 hr
Apr 19, 7:08 PM CDT	Flash Flood Warning	ILX	Marshall, Peoria, Stark, Tazewell, Woodford	6 hr
Apr 19, 7:15 PM CDT	Tornado Warning	ILX	Shelby	45 min
Apr 19, 7:17 PM CDT	Tornado Warning	ILX	Champaign, Piatt	28 min
Apr 19, 7:26 PM CDT	Flash Flood Warning	ILX	Coles, Moultrie, Shelby	6 hr
Apr 19, 7:26 PM CDT	Tornado Warning	ILX	Champaign, Coles, Douglas	34 min
Apr 19, 7:45 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	30 min
Apr 19, 7:46 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	29 min
Apr 19, 7:49 PM CDT	Severe Thunderstorm Warning	ILX	Champaign	26 min
Apr 19, 7:56 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Cumberland, Effingham, Shelby	49 min
Apr 19, 8:10 PM CDT	Tornado Warning	ILX	Vermilion	20 min
Apr 19, 8:13 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	47 min
Apr 19, 8:14 PM CDT	Flash Flood Warning	ILX	Coles, Cumberland, Douglas	6 hr
Apr 19, 8:33 PM CDT	Flash Flood Warning	ILX	Clark, Coles, Edgar	6 hr
Apr 19, 8:52 PM CDT	Tornado Warning	ILX	Effingham, Shelby	38 min
Apr 19, 8:56 PM CDT	Flash Flood Warning	ILX	Effingham	6 hr
Apr 19, 9:13 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Coles, Cumberland, Edgar	47 min
Apr 19, 9:19 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper, Richland	41 min
Apr 19, 9:27 PM CDT	River Flood Warning	ILX	Piatt	12 days
Apr 19, 9:40 PM CDT	River Flood Warning	ILX	Clay, Richland	18 days
Apr 19, 9:46 PM CDT	Tornado Warning	ILX	Crawford, Jasper, Lawrence, Richland	44 min
Apr 19, 9:51 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford, Cumberland, Jasper	39 min
Apr 19, 9:53 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	27 min
Apr 19, 9:58 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Edgar	17 min
Apr 20, 5:44 AM CDT	River Flood Warning	ILX	Fulton, Knox	16 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2011 Every severe thunderstorm warning in 2011

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.