Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 44, NWS Lincoln, IL

April 19, 2011Vermilion County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 19, 2011, 7:45 PM CDT for Vermilion County, Illinois. It was in force for 30 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, 7:45 PM CDT (00:45 UTC)
Expired: Apr 19, 2011, 8:15 PM CDT
In force: 30 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County Vermilion County, IL

The radar

The Lincoln radar (KILX), 132 km from the middle of the area, began a volume at 00:45 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, 8:00 PM CDT	HAIL 1	Jamaica, IL
Apr 19, 8:02 PM CDT	TORNADO	Henning, IL	POWER FLASHES ON GROUND AND SHERIFF REPORTED DAMAGE IN TOWN.
Apr 19, 8:05 PM CDT	TSTM WND DMG	1 W Rossville, IL	TREES DOWN
Apr 19, 8:15 PM CDT	TSTM WND DMG	Hoopeston, IL	POWER POLES BLOWN DOWN REPORTED BY SPOTERS AT THE INTERSECTION OF ILLINOIS ROUTE 1 AND ILLINOIS ROUTE 9

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, 0.8 hours before the alert went out and 69 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.

536 
WUUS53 KILX 200045
SVRILX
ILC183-200115-
/O.NEW.KILX.SV.W.0044.110420T0045Z-110420T0115Z/

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  VERMILION COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 815 PM CDT.

* AT 740 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
  WERE LOCATED ALONG A LINE EXTENDING FROM FISHER TO ST. JOSEPH TO
  BROADLANDS...AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DANVILLE...FITHIAN...FAIRMOUNT...SIDELL...OAKWOOD...CATLIN...RIDGE
  FARM...TILTON...WESTVILLE...GEORGETOWN...POTOMAC...RANKIN...
  ROSSVILLE...HOOPESTON...JAMAICA...KICKAPOO STATE PARK...
  INDIANOLA...COLLISON...ARMSTRONG AND MIDDLE FORK WILDLIFE AREA.

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 3988 8754 3988 8793 4018 8795 4023 8795
      4023 8793 4049 8794 4049 8753
TIME...MOT...LOC 0045Z 265DEG 54KT 4039 8823 4012 8791
          3989 8794
WIND...HAIL 70MPH 1.00IN

$$

MILLER

2 follow-up statements

265 
WWUS53 KILX 200103
SVSILX

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

ILC183-200115-
/O.CON.KILX.SV.W.0044.000000T0000Z-110420T0115Z/
VERMILION IL-
803 PM CDT TUE APR 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR VERMILION
COUNTY UNTIL 815 PM CDT...

AT 759 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES EAST OF RANKIN TO DANVILLE TO RIDGE FARM...
MOVING EAST AT 65 MPH.

LOCATIONS IMPACTED INCLUDE...
  ROSSVILLE...HOOPESTON...BISMARCK AND ALVIN.

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 3988 8782 4010 8780 4031 8792 4049 8794
      4049 8753 3988 8755
TIME...MOT...LOC 0103Z 264DEG 56KT 4044 8771 4014 8753
          3991 8758
WIND...HAIL 70MPH <.75IN

$$

MILLER

795 
WWUS53 KILX 200115
SVSILX

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

ILC183-200125-
/O.EXP.KILX.SV.W.0044.000000T0000Z-110420T0115Z/
VERMILION IL-
815 PM CDT TUE APR 19 2011

...THE SEVERE THUNDERSTORM WARNING FOR VERMILION COUNTY HAS
EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 9 PM CDT.

REMEMBER...A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME NORTHEAST
VERMILION COUNTY UNTIL 830 PM CDT.

LAT...LON 3988 8782 4010 8780 4031 8792 4049 8794
      4049 8753 3988 8755
TIME...MOT...LOC 0103Z 264DEG 56KT 4044 8771 4013 8753
          3990 8758

$$

MILLER

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, 7:46 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, 8:46 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Crawford, Cumberland, Jasper	59 min
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.