Alert archive / Illinois / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 13, NWS Lincoln, IL

April 16, 20134 counties in Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Apr 16, 2013, 12:25 AM CDT for 4 counties in Illinois. It was in force for 50 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
Apr 16, 2013, 12:25 AM CDT (05:25 UTC)
Expired
Apr 16, 2013, 1:15 AM CDT
In force
50 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties DeWitt County, IL, Logan County, IL, Macon County, IL, Sangamon County, IL

The radar

The Lincoln radar (KILX), 34 km from the middle of the area, began a volume at 05:26 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

TimeReportWhereRemark
Apr 16, 12:34 AM CDTHAIL 0.752 Sw Latham, 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.

IssuedProductOfficeLasted
Apr 16, 12:00 AM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.4 hours before the alert went out and 49 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2013-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2013-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 343 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
493 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
343 m²/s²
0-3 km storm-relative helicity
702 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

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

461 
WUUS53 KILX 160525
SVRILX
ILC039-107-115-167-160615-
/O.NEW.KILX.SV.W.0013.130416T0525Z-130416T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1225 AM CDT TUE APR 16 2013

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN DE WITT COUNTY IN CENTRAL ILLINOIS...
  SOUTHEASTERN LOGAN COUNTY IN CENTRAL ILLINOIS...
  NORTHERN MACON COUNTY IN CENTRAL ILLINOIS...
  NORTHEASTERN SANGAMON COUNTY IN CENTRAL ILLINOIS...

* UNTIL 115 AM CDT

* AT 1220 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  ILLIOPOLIS...AND MOVING EAST AT 50 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  NIANTIC...LATHAM...WARRENSBURG...FORSYTH...MAROA...OREANA...
  ARGENTA...ROWELL...WELDON SPRINGS STATE PARK AND LANE.

THIS INCLUDES INTERSTATE 72 BETWEEN MILE MARKERS 119 AND 155.

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.

&&

LAT...LON 3994 8875 3982 8923 3983 8925 3981 8926
      3980 8931 3999 8938 4017 8875
TIME...MOT...LOC 0525Z 249DEG 42KT 3992 8922

HAIL...1.00IN
WIND...<50MPH

$$

BAK
2 follow-up statements
651 
WWUS53 KILX 160537
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1237 AM CDT TUE APR 16 2013

ILC039-107-115-167-160615-
/O.CON.KILX.SV.W.0013.000000T0000Z-130416T0615Z/
LOGAN IL-MACON IL-SANGAMON IL-DE WITT IL-
1237 AM CDT TUE APR 16 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN DE
WITT...NORTHEASTERN SANGAMON...NORTHERN MACON AND SOUTHEASTERN LOGAN
COUNTIES UNTIL 115 AM CDT...

AT 1232 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LATHAM...AND
MOVING EAST AT 50 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
FORSYTH...MAROA...OREANA...ARGENTA...WELDON...ROWELL AND LANE.

THIS INCLUDES INTERSTATE 72 BETWEEN MILE MARKERS 119 AND 155.

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.

&&

LAT...LON 3994 8875 3982 8923 3983 8925 3981 8926
      3980 8931 3999 8938 4017 8875
TIME...MOT...LOC 0537Z 249DEG 42KT 3997 8905

HAIL...1.00IN
WIND...<50MPH

$$

BAK
632 
WWUS53 KILX 160551
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1251 AM CDT TUE APR 16 2013

ILC039-107-115-167-160601-
/O.CAN.KILX.SV.W.0013.000000T0000Z-130416T0615Z/
LOGAN IL-MACON IL-SANGAMON IL-DE WITT IL-
1251 AM CDT TUE APR 16 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DE WITT...
NORTHEASTERN SANGAMON...NORTHERN MACON AND SOUTHEASTERN LOGAN
COUNTIES IS CANCELLED...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 7 AM.

LAT...LON 3994 8875 3982 8923 3983 8925 3981 8926
      3980 8931 3999 8938 4017 8875
TIME...MOT...LOC 0551Z 249DEG 42KT 4003 8885

$$

BAK

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 12:03 AM CDTSevere Thunderstorm WarningILXLogan, Sangamon27 min
Apr 16, 2:00 AM CDTSpecial Weather StatementILXMoultrie, Shelby60 min
Apr 16, 2:28 PM CDTSpecial Weather StatementILXClark, Coles, Cumberland, Edgar, Shelby62 min
Apr 16, 3:36 PM CDTRiver Flood WarningILXPiatt8 days
Apr 16, 3:39 PM CDTFlash Flood WatchILXCass, Champaign, Christian, Coles, DeWitt, Douglas and 21 more60 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2013Every severe thunderstorm warning in 2013

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.