Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 76, NWS Lincoln, IL

May 22, 2011Logan County, Menard County, Sangamon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 22, 2011, 2:29 PM CDT for Logan County, Menard County, Sangamon County, Illinois. It was in force for 46 min. 6 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: May 22, 2011, 2:29 PM CDT (19:29 UTC)
Expired: May 22, 2011, 3:15 PM CDT
In force: 46 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Logan County, IL, Menard County, IL, Sangamon County, IL

The radar

The Lincoln radar (KILX), 36 km from the middle of the area, began a volume at 19:31 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
May 22, 2:29 PM CDT	HAIL 0.75	1 S Lincolns New Salem, IL
May 22, 2:33 PM CDT	HAIL 1	1 Nw Athens, IL
May 22, 2:35 PM CDT	HAIL 1	Middletown, IL
May 22, 2:44 PM CDT	HAIL 0.75	8 E Petersburg, IL
May 22, 2:45 PM CDT	HAIL 1	Athens, IL
May 22, 3:11 PM CDT	HAIL 0.75	2 W Williamsville, 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
May 22, 12:51 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.5 hours before the alert went out and 98 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1465 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -98 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

449 
WUUS53 KILX 221929
SVRILX
ILC107-129-167-222015-
/O.NEW.KILX.SV.W.0076.110522T1929Z-110522T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
229 PM CDT SUN MAY 22 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN LOGAN COUNTY IN CENTRAL ILLINOIS...
  MENARD COUNTY IN CENTRAL ILLINOIS...
  NORTHWESTERN SANGAMON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 315 PM CDT.

* AT 226 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 GREENVIEW TO TALLULA...AND
  MOVING NORTHEAST AT 35 MPH. A WIND GUST OF 66 MPH WAS MEASURED 
  8 MILES EAST OF PETERSBURG. 

* LOCATIONS IMPACTED INCLUDE...
  MIDDLETOWN...ATHENS...WILLIAMSVILLE...CANTRALL...NEW HOLLAND AND
  FANCY PRAIRIE.

THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 105 AND 114.

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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

&&

LAT...LON 4005 8990 4013 8975 4015 8971 4014 8969
      4016 8967 4016 8964 4012 8961 4021 8960
      4026 8950 3994 8948 3978 8998 3978 8999
      3994 9000
TIME...MOT...LOC 1929Z 240DEG 31KT 4008 8965 3994 8984
WIND...HAIL 70MPH 1.00IN

$$
GEELHART

3 follow-up statements

497 
WWUS53 KILX 221941
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
241 PM CDT SUN MAY 22 2011

ILC107-129-167-222015-
/O.CON.KILX.SV.W.0076.000000T0000Z-110522T2015Z/
LOGAN IL-MENARD IL-SANGAMON IL-
241 PM CDT SUN MAY 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
SANGAMON...EASTERN MENARD AND WESTERN LOGAN COUNTIES UNTIL 315 PM
CDT...

AT 239 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 6 MILES NORTHEAST OF MIDDLETOWN
TO 5 MILES EAST OF PLEASANT PLAINS...MOVING NORTHEAST AT 35 MPH. 
THESE STORMS HAVE A HISTORY OF PRODUCING HAIL OF QUARTER SIZE OR
LARGER.

LOCATIONS IMPACTED INCLUDE...
  WILLIAMSVILLE...CANTRALL AND FANCY PRAIRIE.

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.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3998 8986 4009 8977 4012 8971 4013 8960
      4021 8960 4026 8950 3994 8949 3978 8998
      3989 9000
TIME...MOT...LOC 1941Z 240DEG 31KT 4015 8947 3989 8980
WIND...HAIL 70MPH 1.00IN

$$
GEELHART

523 
WWUS53 KILX 221954
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
254 PM CDT SUN MAY 22 2011

ILC107-129-167-222015-
/O.CON.KILX.SV.W.0076.000000T0000Z-110522T2015Z/
LOGAN IL-MENARD IL-SANGAMON IL-
254 PM CDT SUN MAY 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
SANGAMON...EASTERN MENARD AND WEST CENTRAL LOGAN COUNTIES UNTIL 315
PM CDT...

AT 252 PM CDT...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 ELKHART TO WILLIAMSVILLE TO
ATHENS...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  WILLIAMSVILLE.

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.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURE'S LEADING KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 3995 8983 4007 8975 4011 8968 4013 8960
      4021 8960 4022 8950 3994 8949 3978 8998
      3986 8999
TIME...MOT...LOC 1954Z 240DEG 31KT 4009 8949 4000 8951
          3991 8971
WIND...HAIL 60MPH 1.00IN

$$
GEELHART

836 
WWUS53 KILX 222015
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
315 PM CDT SUN MAY 22 2011

ILC107-129-167-222025-
/O.EXP.KILX.SV.W.0076.000000T0000Z-110522T2015Z/
LOGAN IL-MENARD IL-SANGAMON IL-
315 PM CDT SUN MAY 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SANGAMON...
EASTERN MENARD AND WEST CENTRAL LOGAN COUNTIES 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. 

A SEVERE THUNDERSTORM WARNING WAS IN EFFECT FOR AREAS FURTHER SOUTH
IN SANGAMON COUNTY...AS WELL AS CENTRAL LOGAN COUNTY. 

LAT...LON 3995 8983 4007 8975 4011 8968 4013 8960
      4021 8960 4022 8950 3994 8949 3978 8998
      3986 8999
TIME...MOT...LOC 2015Z 240DEG 31KT 4018 8928 4009 8930
          4000 8951

$$
GEELHART

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 5:26 AM CDT	Special Weather Statement	ILX	Piatt	64 min
May 22, 8:08 AM CDT	Special Weather Statement	ILX	Clark, Coles, Cumberland	82 min
May 22, 1:08 PM CDT	Special Weather Statement	ILX	Tazewell	52 min
May 22, 1:11 PM CDT	Severe Thunderstorm Warning	ILX	Mason, Tazewell	34 min
May 22, 1:35 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Mason, Menard, Morgan, Sangamon	55 min
May 22, 1:39 PM CDT	Severe Thunderstorm Warning	ILX	Tazewell, Woodford	36 min
May 22, 1:44 PM CDT	Severe Thunderstorm Warning	ILX	Morgan	16 min
May 22, 1:52 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	38 min
May 22, 2:08 PM CDT	Severe Thunderstorm Warning	ILX	McLean, Tazewell, Woodford	37 min
May 22, 2:38 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, McLean, Tazewell	52 min
May 22, 2:43 PM CDT	Severe Thunderstorm Warning	ILX	Morgan	32 min
May 22, 2:59 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan, Macon, Sangamon	46 min
May 22, 3:06 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	39 min
May 22, 3:24 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, McLean	66 min
May 22, 3:29 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Piatt	46 min
May 22, 3:43 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	47 min
May 22, 4:14 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Piatt	28 min
May 22, 5:24 PM CDT	Severe Thunderstorm Warning	ILX	Knox	27 min
May 22, 6:00 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Mason, Peoria, Tazewell	30 min
May 22, 6:07 PM CDT	Severe Thunderstorm Warning	ILX	Knox	38 min
May 22, 6:08 PM CDT	Special Weather Statement	ILX	Schuyler	37 min
May 22, 6:30 PM CDT	Severe Thunderstorm Warning	ILX	Peoria, Tazewell, Woodford	45 min
May 22, 6:43 PM CDT	Severe Thunderstorm Warning	ILX	Fulton	33 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.