Alert archive / Illinois / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 39, NWS Lincoln, IL

May 21, 2014Champaign County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at May 21, 2014, 5:57 PM CDT for Champaign County, Illinois. It was in force for 48 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: May 21, 2014, 5:57 PM CDT (22:57 UTC)
Expired: May 21, 2014, 6:45 PM CDT
In force: 48 min
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Hail: 1.75 in
Wind: 50.0 mph

County Champaign County, IL

The radar

The Lincoln radar (KILX), 103 km from the middle of the area, began a volume at 22:59 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 21, 6:01 PM CDT	HAIL 1.5	2 S Champaign, IL	HAIL REPORT FROM COCORAHS MESONET OBSERVER.
May 21, 6:06 PM CDT	HAIL 1.75	Savoy, IL	SIGNIFICANT HAIL DAMAGE AT WILLARD AIRPORT...CHAMPAIGN AIRPORT TO VEHICLES. ALSO...POSSIBLE DAMAGE TO A...B-17 AIRCRAFT...AT THE AIRPORT. HAIL FELL BETWEEN 0606 AND 0615 PM.
May 21, 6:06 PM CDT	HAIL 1.75	Willard Airport, IL
May 21, 6:15 PM CDT	HAIL 0.88	1 Ene Philo, IL	LOTS OF SHREDDED LEAVES IN THE TREES
May 21, 6:20 PM CDT	HAIL 1	Philo, IL	HAIL LASTED 5 MINUTES

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 21, 2:35 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.0 hours before the alert went out and 43 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: 806 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 1032 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

361 
WUUS53 KILX 212257
SVRILX
ILC019-212345-
/O.NEW.KILX.SV.W.0039.140521T2257Z-140521T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
557 PM CDT WED MAY 21 2014

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 555 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES WEST OF
  SAVOY...AND MOVING EAST AT 20 MPH.

  HAZARD...GOLF BALL SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
           TO ROOFS...SIDING...WINDOWS AND VEHICLES.

* LOCATIONS IMPACTED INCLUDE...
  CHAMPAIGN...SAVOY...TOLONO...URBANA...PHILO...SIDNEY...ST.
  JOSEPH...HOMER...BROADLANDS...OGDEN...WILLARD AIRPORT AND LONGVIEW.

THIS INCLUDES INTERSTATE 57 BETWEEN MILE MARKERS 222 AND 235.

THIS INCLUDES INTERSTATE 72 BETWEEN MILE MARKERS 174 AND 182.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 186 AND 197.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3988 8794 3988 8818 3998 8846 4012 8845
      4012 8794
TIME...MOT...LOC 2257Z 279DEG 18KT 4005 8833

HAIL...1.75IN
WIND...<50MPH

$$

CHS

2 follow-up statements

603 
WWUS53 KILX 212310
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
610 PM CDT WED MAY 21 2014

ILC019-212345-
/O.CON.KILX.SV.W.0039.000000T0000Z-140521T2345Z/
CHAMPAIGN IL-
610 PM CDT WED MAY 21 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
CHAMPAIGN COUNTY UNTIL 645 PM CDT...

AT 607 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR TOLONO...AND
MOVING EAST AT 20 MPH.

HAZARD...GOLF BALL SIZE HAIL.

SOURCE...EMERGENCY MANAGEMENT.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
         TO ROOFS...SIDING...WINDOWS AND VEHICLES.

LOCATIONS IMPACTED INCLUDE...
PHILO...SIDNEY...HOMER...BROADLANDS...OGDEN AND LONGVIEW.

INTERSTATE 57 BETWEEN MILE MARKERS 223 AND 232.

INTERSTATE 74 BETWEEN MILE MARKERS 196 AND 197.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING ALL TYPES OF SEVERE
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE
WINDS AND TORNADOES. MOVE QUICKLY TO A SAFE SHELTER...SUCH AS IN AN
INTERIOR ROOM...A BATHROOM OR CLOSET...OR BASEMENT.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3988 8794 3988 8818 4000 8840 4007 8838
      4012 8794
TIME...MOT...LOC 2310Z 279DEG 18KT 4002 8822

HAIL...1.75IN
WIND...<50MPH

$$

CHS

299 
WWUS53 KILX 212332
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
632 PM CDT WED MAY 21 2014

ILC019-212345-
/O.CON.KILX.SV.W.0039.000000T0000Z-140521T2345Z/
CHAMPAIGN IL-
632 PM CDT WED MAY 21 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
CHAMPAIGN COUNTY UNTIL 645 PM CDT...

AT 628 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR PHILO...AND
MOVING EAST AT 20 MPH.

HAZARD...GOLF BALL SIZE HAIL.

SOURCE...EMERGENCY MANAGEMENT.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT DAMAGE
         TO ROOFS...SIDING...WINDOWS AND VEHICLES.

LOCATIONS IMPACTED INCLUDE...
BROADLANDS AND HOMER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3988 8794 3992 8816 4001 8826 4006 8825
      4004 8794
TIME...MOT...LOC 2332Z 279DEG 18KT 3997 8809

HAIL...1.75IN
WIND...<50MPH

$$

CHS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 2:48 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, McLean, Piatt	57 min
May 21, 2:58 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	47 min
May 21, 3:21 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Douglas, Piatt	54 min
May 21, 3:27 PM CDT	Severe Thunderstorm Warning	ILX	Champaign	63 min
May 21, 3:58 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Coles, Douglas, Edgar	47 min
May 21, 4:01 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Edgar, Vermilion	44 min
May 21, 4:11 PM CDT	Severe Thunderstorm Warning	ILX	Vermilion	64 min
May 21, 4:41 PM CDT	Severe Thunderstorm Warning	ILX	Coles, Douglas, Edgar	64 min
May 21, 4:54 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Piatt	66 min
May 21, 5:23 PM CDT	Flash Flood Warning	ILX	Champaign, Piatt	6 hr
May 21, 6:28 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Douglas, Edgar, Vermilion	62 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2014 Every severe thunderstorm warning in 2014

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.