Alert archive / Illinois / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 84, NWS Lincoln, IL

May 22, 2011Champaign County, Piatt County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 22, 2011, 4:14 PM CDT for Champaign County, Piatt County, Illinois. It was in force for 28 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: May 22, 2011, 4:14 PM CDT (21:14 UTC)
Expired: May 22, 2011, 4:42 PM CDT
In force: 28 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Champaign County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 83 km from the middle of the area, began a volume at 21:16 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
May 22, 12:51 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.2 hours before the alert went out and 21 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.

928 
WUUS53 KILX 222114
SVRILX
ILC019-147-222200-
/O.NEW.KILX.SV.W.0084.110522T2114Z-110522T2200Z/

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...
  NORTHEASTERN PIATT COUNTY IN CENTRAL ILLINOIS...

* UNTIL 500 PM CDT.

* AT 411 PM CDT...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 5 MILES NORTHEAST OF FARMER CITY TO MANSFIELD TO DE LAND...AND
  MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CHAMPAIGN...WHITE HEATH...MAHOMET...LAKE OF THE WOODS...SEYMOUR...
  TOLONO...THOMASBORO...SAVOY...URBANA...LODGE AND WILLARD AIRPORT.

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 227 AND 248....
72 BETWEEN MILE MARKERS 165 AND 182...AND INTERSTATE 74 BETWEEN 
MILE MARKERS 160 AND 187.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIND DAMAGE WITH THESE STORMS WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4028 8805 3997 8820 4005 8866 4022 8863
      4029 8857
TIME...MOT...LOC 2114Z 264DEG 33KT 4030 8853 4017 8849
          4010 8860
WIND...HAIL 60MPH <.75IN

$$
GEELHART

2 follow-up statements

730 
WWUS53 KILX 222133
SVSILX

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

ILC147-222143-
/O.CAN.KILX.SV.W.0084.000000T0000Z-110522T2200Z/
PIATT IL-
433 PM CDT SUN MAY 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PIATT COUNTY IS
CANCELLED...

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

LAT...LON 3997 8820 4002 8846 4029 8846 4028 8805
TIME...MOT...LOC 2133Z 270DEG 29KT 4018 8834

$$
ILC019-222200-
/O.CON.KILX.SV.W.0084.000000T0000Z-110522T2200Z/
CHAMPAIGN IL-
433 PM CDT SUN MAY 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
CHAMPAIGN COUNTY UNTIL 500 PM CDT...

AT 430 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH. THIS STORM WAS LOCATED NEAR MAHOMET...OR 7 MILES NORTHWEST
OF CHAMPAIGN...MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  CHAMPAIGN...TOLONO...SAVOY...URBANA...THOMASBORO AND WILLARD
  AIRPORT.

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 227 AND 248...
INTERSTATE 72 BETWEEN MILE MARKERS 174 AND 182...AND 
INTERSTATE 74 BETWEEN MILE MARKERS 169 AND 187.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WIND DAMAGE WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 3997 8820 4002 8846 4029 8846 4028 8805
TIME...MOT...LOC 2133Z 270DEG 29KT 4018 8834
WIND...HAIL 60MPH <.75IN

$$
GEELHART

347 
WWUS53 KILX 222142
SVSILX

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

ILC019-222152-
/O.CAN.KILX.SV.W.0084.000000T0000Z-110522T2200Z/
CHAMPAIGN IL-
442 PM CDT SUN MAY 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHAMPAIGN COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

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

LAT...LON 3997 8820 4002 8846 4029 8846 4028 8805
TIME...MOT...LOC 2142Z 270DEG 29KT 4018 8824

$$
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, 2:29 PM CDT	Severe Thunderstorm Warning	ILX	Logan, Menard, Sangamon	46 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.