Alert archive / Illinois / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 64, NWS Lincoln, IL

May 6, 2012Champaign County, Vermilion County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 6, 2012, 4:03 PM CDT for Champaign County, Vermilion County, Illinois. It was in force for 57 min. 1 report 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 6, 2012, 4:03 PM CDT (21:03 UTC)
Expired: May 6, 2012, 5:00 PM CDT
In force: 57 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Champaign County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 120 km from the middle of the area, began a volume at 21:05 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
May 6, 5:10 PM CDT	HAIL 2.5	3 W Hoopeston, IL	RELAYED BY EMA

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 6, 1:42 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.1 hours before the alert went out and 60 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: 2922 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 576 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 98 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.

268 
WUUS53 KILX 062103
SVRILX
ILC019-183-062200-
/O.NEW.KILX.SV.W.0064.120506T2103Z-120506T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
403 PM CDT SUN MAY 6 2012

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 500 PM CDT.

* AT 401 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  GIFFORD...OR 9 MILES EAST OF RANTOUL...AND MOVING NORTHEAST AT 15
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  RANKIN AND ARMSTRONG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4020 8795 4030 8815 4041 8809 4040 8796
      4041 8794 4048 8794 4049 8793 4049 8767
TIME...MOT...LOC 2103Z 211DEG 11KT 4033 8799
WIND...HAIL 60MPH 1.00IN

$$

BAK

2 follow-up statements

179 
WWUS53 KILX 062120
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
420 PM CDT SUN MAY 6 2012

ILC019-183-062200-
/O.CON.KILX.SV.W.0064.000000T0000Z-120506T2200Z/
VERMILION IL-CHAMPAIGN IL-
420 PM CDT SUN MAY 6 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
CHAMPAIGN AND NORTHWESTERN VERMILION COUNTIES UNTIL 500 PM CDT...

AT 418 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
NORTHEAST OF GIFFORD...OR 10 MILES SOUTHEAST OF PAXTON...MOVING
NORTHEAST AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  RANKIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4025 8794 4041 8809 4040 8796 4041 8794
      4048 8794 4049 8793 4049 8767
TIME...MOT...LOC 2120Z 211DEG 11KT 4037 8795
WIND...HAIL 60MPH 1.00IN

$$

BAK

746 
WWUS53 KILX 062135
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
435 PM CDT SUN MAY 6 2012

ILC019-062145-
/O.CAN.KILX.SV.W.0064.000000T0000Z-120506T2200Z/
CHAMPAIGN IL-
435 PM CDT SUN MAY 6 2012

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

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

LAT...LON 4026 8793 4037 8793 4040 8794 4048 8794
      4049 8793 4049 8767
TIME...MOT...LOC 2135Z 211DEG 11KT 4041 8792

$$

ILC183-062200-
/O.CON.KILX.SV.W.0064.000000T0000Z-120506T2200Z/
VERMILION IL-
435 PM CDT SUN MAY 6 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
VERMILION COUNTY UNTIL 500 PM CDT...

AT 430 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
SOUTH OF RANKIN...OR 10 MILES SOUTHEAST OF PAXTON...MOVING NORTHEAST
AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  RANKIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4026 8793 4037 8793 4040 8794 4048 8794
      4049 8793 4049 8767
TIME...MOT...LOC 2135Z 211DEG 11KT 4041 8792
WIND...HAIL 60MPH 1.00IN

$$

BAK

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 2:06 PM CDT	Severe Thunderstorm Warning	ILX	Knox, Peoria, Stark	54 min
May 6, 2:36 PM CDT	Tornado Warning	ILX	Marshall, Stark	39 min
May 6, 3:07 PM CDT	Tornado Warning	ILX	Marshall	53 min
May 6, 3:46 PM CDT	Areal Flood Advisory	ILX	Marshall, Stark	6 hr
May 6, 5:00 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	45 min
May 6, 5:21 PM CDT	Tornado Warning	ILX	Vermilion	39 min
May 6, 6:09 PM CDT	Flash Flood Warning	ILX	Vermilion	6 hr
May 6, 6:48 PM CDT	Special Weather Statement	ILX	Vermilion	27 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2012 Every severe thunderstorm warning in 2012

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.