Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 13, NWS Lincoln, IL

February 28, 20115 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Feb 28, 2011, 12:29 AM CST for 5 counties in Illinois. It was in force for 61 min. 5 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: Feb 28, 2011, 12:29 AM CST (06:29 UTC)
Expired: Feb 28, 2011, 1:30 AM CST
In force: 61 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clay County, IL, Cumberland County, IL, Effingham County, IL, Jasper County, IL, Richland County, IL

The radar

The Evansville,IN radar (KVWX), 80 km from the middle of the area, began a volume at 06:29 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
Feb 28, 12:33 AM CST	TSTM WND DMG	3 Sw Altamont, IL	POWER POLES BENT OVER AND DAMAGE TO A POLE BARN
Feb 28, 12:45 AM CST	TSTM WND DMG	Watson, IL	A 12X12 FOOT ROOF WAS BLOWN OFF A SMALL UTILITY SHED.
Feb 28, 12:45 AM CST	TSTM WND GST 55	3 W Xenia, IL
Feb 28, 12:45 AM CST	TSTM WND GST 55	8 N Xenia, IL
Feb 28, 12:55 AM CST	TSTM WND DMG	2 N Flora, IL	FIVE POWER POLES SNAPPED ALONG US-45 NORTH OF FLORA.

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
Feb 27, 11:46 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.5 hours before the alert went out and 147 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: 124 J/kg
Mixed-layer CIN: -220 J/kg
Mixed-layer LCL: 494 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

628 
WUUS53 KILX 280629
SVRILX
ILC025-035-049-079-159-280730-
/O.NEW.KILX.SV.W.0013.110228T0629Z-110228T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1229 AM CST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHEASTERN CUMBERLAND COUNTY IN EAST CENTRAL ILLINOIS...
  SOUTHERN EFFINGHAM COUNTY IN SOUTH CENTRAL ILLINOIS...
  JASPER COUNTY IN SOUTHEAST ILLINOIS...
  RICHLAND COUNTY IN SOUTHEAST ILLINOIS...

* UNTIL 130 AM CST.

* AT 1225 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 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 ST. ELMO TO ODIN...AND MOVING
  EAST AT 70 MPH.

* LOCATIONS IMPACTED INCLUDE...
  FLORA...NEWTON...OLNEY...EDGEWOOD...WATSON...IOLA...XENIA...
  LOUISVILLE...DIETERICH...BIBLE GROVE...WHEELER...SAILOR SPRINGS...
  INGAHAM...CLAY CITY...BOGOTA...HIDALGO...SCHNELL...NOBLE...HAZEL
  DELL AND WEST LIBERTY.

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 500 AM CST MONDAY MORNING FOR
SOUTHEASTERN ILLINOIS.

LAT...LON 3857 8814 3860 8816 3861 8870 3891 8871
      3892 8882 3905 8879 3923 8801 3918 8801
      3918 8796 3886 8795 3886 8792 3857 8792
TIME...MOT...LOC 0629Z 267DEG 63KT 3904 8881 3858 8899
WIND...HAIL 60MPH 1.00IN

$$

BAK

2 follow-up statements

931 
WWUS53 KILX 280655
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1255 AM CST MON FEB 28 2011

ILC025-035-049-079-159-280730-
/O.CON.KILX.SV.W.0013.000000T0000Z-110228T0730Z/
RICHLAND IL-CLAY IL-JASPER IL-EFFINGHAM IL-CUMBERLAND IL-
1255 AM CST MON FEB 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
CUMBERLAND...SOUTHEASTERN EFFINGHAM...JASPER...CLAY AND RICHLAND
COUNTIES UNTIL 130 AM CST...

AT 1253 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM DIETERICH TO XENIA...MOVING EAST AT 70 MPH. PENNY SIZE HAIL MAY
ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  FLORA...NEWTON...OLNEY...WHEELER...INGAHAM...SAILOR SPRINGS...CLAY
  CITY...BOGOTA...HIDALGO...SCHNELL...NOBLE...HAZEL DELL...WEST
  LIBERTY...WILLOW HILL...DUNDAS...STE. MARIE...PARKERSBURG...
  CALHOUN...CLAREMONT AND LATONA.

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 3860 8816 3861 8870 3913 8845 3923 8802
      3918 8801 3918 8796 3886 8795 3886 8792
      3857 8792 3857 8814
TIME...MOT...LOC 0655Z 267DEG 59KT 3908 8835 3862 8854
WIND...HAIL 60MPH 0.75IN

$$

BAK

521 
WWUS53 KILX 280729
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
129 AM CST MON FEB 28 2011

ILC025-035-049-079-159-280738-
/O.EXP.KILX.SV.W.0013.000000T0000Z-110228T0730Z/
RICHLAND IL-CLAY IL-JASPER IL-EFFINGHAM IL-CUMBERLAND IL-
129 AM CST MON FEB 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CUMBERLAND...
SOUTHEASTERN EFFINGHAM...JASPER...CLAY AND RICHLAND COUNTIES WILL
EXPIRE AT 130 AM CST...

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 5 AM. 

LAT...LON 3860 8816 3861 8870 3913 8845 3923 8802
      3918 8801 3918 8796 3886 8795 3886 8792
      3857 8792 3857 8814
TIME...MOT...LOC 0728Z 267DEG 59KT 3910 8765 3864 8785

$$

BAK

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 27, 6:52 PM CST	Severe Thunderstorm Warning	ILX	Fulton, Schuyler	38 min
Feb 27, 7:19 PM CST	Severe Thunderstorm Warning	ILX	Fulton, Mason, Tazewell	41 min
Feb 27, 7:40 PM CST	Special Weather Statement	ILX	Mason, Menard, Tazewell	50 min
Feb 27, 7:56 PM CST	Special Weather Statement	ILX	Peoria, Tazewell	49 min
Feb 27, 8:14 PM CST	Severe Thunderstorm Warning	ILX	Logan, McLean, Tazewell	31 min
Feb 27, 8:25 PM CST	Severe Thunderstorm Warning	ILX	Cass, Fulton, Mason, Schuyler	35 min
Feb 27, 8:30 PM CST	Special Weather Statement	ILX	Christian, Moultrie, Shelby	30 min
Feb 27, 8:33 PM CST	Severe Thunderstorm Warning	ILX	Fulton, Peoria, Tazewell	32 min
Feb 27, 8:42 PM CST	Special Weather Statement	ILX	Morgan, Scott	33 min
Feb 27, 8:44 PM CST	Severe Thunderstorm Warning	ILX	McLean	46 min
Feb 27, 8:45 PM CST	Freezing Rain Advisory	ILX	Knox, Stark	5 hr
Feb 27, 9:17 PM CST	Severe Thunderstorm Warning	ILX	Christian, Logan, Menard, Sangamon	28 min
Feb 27, 9:19 PM CST	Special Weather Statement	ILX	Coles, Douglas, Edgar	41 min
Feb 27, 9:35 PM CST	Severe Thunderstorm Warning	ILX	Clark, Coles, Douglas, Edgar	40 min
Feb 27, 9:47 PM CST	Special Weather Statement	ILX	DeWitt, Logan, McLean, Macon, Moultrie, Piatt	43 min
Feb 27, 10:11 PM CST	Special Weather Statement	ILX	Lawrence	34 min
Feb 27, 10:43 PM CST	Special Weather Statement	ILX	Crawford, Lawrence	47 min
Feb 27, 11:02 PM CST	River Flood Warning	ILX	Peoria, Tazewell, Woodford	16 days
Feb 27, 11:04 PM CST	Special Weather Statement	ILX	Cass, Logan, Menard, Morgan, Sangamon	56 min
Feb 28, 12:25 AM CST	Severe Thunderstorm Warning	ILX	Coles, Cumberland, Effingham, Jasper, Moultrie, Shelby	44 min
Feb 28, 12:59 AM CST	Severe Thunderstorm Warning	ILX	Clark, Edgar	32 min
Feb 28, 1:06 AM CST	Severe Thunderstorm Warning	ILX	Crawford, Lawrence	39 min
Feb 28, 1:18 AM CST	Tornado Warning	ILX	Richland	14 min

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.