Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 2, NWS Northern Indiana

April 4, 20114 counties in Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Apr 4, 2011, 4:58 AM EDT for 4 counties in Indiana. It was in force for 36 min. 2 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: Apr 4, 2011, 4:58 AM EDT (08:58 UTC)
Expired: Apr 4, 2011, 5:34 AM EDT
In force: 36 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.5 in
Wind: 60.0 mph

Counties Cass County, IN, Fulton County, IN, Miami County, IN, Wabash County, IN

The radar

The Northern Indiana radar (KIWX), 87 km from the middle of the area, began a volume at 08:58 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
Apr 4, 5:18 AM EDT	TSTM WND GST 54	2 W Bunker Hill, IN
Apr 4, 5:18 AM EDT	TSTM WND GST 54	Bunker Hill, IN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.0 hours before the alert went out and 202 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: 191 J/kg
Mixed-layer CIN: -426 J/kg
Mixed-layer LCL: 2183 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 363 m²/s²
0-3 km storm-relative helicity: 578 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.

776 
WUUS53 KIWX 040858
SVRIWX
INC017-049-103-169-040945-
/O.NEW.KIWX.SV.W.0002.110404T0858Z-110404T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
458 AM EDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CASS COUNTY IN NORTH CENTRAL INDIANA...
  MIAMI COUNTY IN NORTH CENTRAL INDIANA...
  WESTERN WABASH COUNTY IN NORTH CENTRAL INDIANA...
  SOUTHEASTERN FULTON COUNTY IN NORTH CENTRAL INDIANA...

* UNTIL 545 AM EDT

* AT 454 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE SEVERE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 9 MILES WEST OF LOGANSPORT TO 30 MILES SOUTHWEST OF
  WALTON...AND MOVING EAST AT 60 MPH.

* LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
  LOGANSPORT...
  WALTON...
  MEXICO AND GRISSOM AFB...
  PERU AND BUNKER HILL...

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE LEASES
CORNER...METEA...ADAMSBORO...DEACON...ANOKA...TWELVE MILE...HOOVER...
GALVESTON...NEW WAVERLY...LINCOLN...ONWARD AND DEEDSVILLE.

PRECAUTIONARY/PREPARDNESS ACTIONS...

THIS IS A DANGEROUS LINE OF SEVERE THUNDERSTORMS. IF YOU ARE IN THE
PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH...
ALONG WITH DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM
WINDOWS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.

&&

LAT...LON 4070 8638 4070 8652 4074 8653 4074 8658
      4079 8658 4091 8643 4103 8585 4058 8586
      4057 8637
TIME...MOT...LOC 0858Z 253DEG 51KT 4073 8646 4035 8655
WIND...HAIL 60MPH <.50IN

$$

2 follow-up statements

130 
WWUS53 KIWX 040920
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
520 AM EDT MON APR 4 2011

INC049-040930-
/O.CAN.KIWX.SV.W.0002.000000T0000Z-110404T0945Z/
FULTON IN-
520 AM EDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL FULTON COUNTY IN
NORTH CENTRAL INDIANA IS CANCELLED...

AT 517 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE LINE OF SEVERE THUNDERSTORMS WHICH PROMPTED THE WARNING HAD 
MOVED OUT AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN 
CANCELLED.

PRECAUTIONARY/PREPARDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.

&&

LAT...LON 4058 8621 4092 8619 4092 8617 4096 8617
      4098 8610 4103 8585 4058 8586
TIME...MOT...LOC 0920Z 253DEG 51KT 4082 8607 4044 8616

$$

INC017-103-169-040945-
/O.CON.KIWX.SV.W.0002.000000T0000Z-110404T0945Z/
WABASH IN-MIAMI IN-CASS IN-
520 AM EDT MON APR 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM EDT
FOR EASTERN CASS...MIAMI AND WESTERN WABASH COUNTIES IN NORTH CENTRAL
INDIANA...

AT 517 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE SEVERE STORMS WERE LOCATED ALONG A
LINE EXTENDING FROM MEXICO TO 16 MILES SOUTH OF GRISSOM AFB...AND
MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  CHILI...FLORA...ERIE...GILEAD...SANTA FE...PEORIA...STOCKDALE...
  ROANN...RICHVALLEY AND DISKO.

PRECAUTIONARY/PREPARDNESS ACTIONS...

THIS IS A DANGEROUS LINE OF SEVERE THUNDERSTORMS. IF YOU ARE IN THE
PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH...
ALONG WITH DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD
MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM
WINDOWS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.

&&

LAT...LON 4058 8621 4092 8619 4092 8617 4096 8617
      4098 8610 4103 8585 4058 8586
TIME...MOT...LOC 0920Z 253DEG 51KT 4082 8607 4044 8616
WIND...HAIL 60MPH <.50IN

$$

661 
WWUS53 KIWX 040934
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
534 AM EDT MON APR 4 2011

INC017-103-169-040943-
/O.CAN.KIWX.SV.W.0002.000000T0000Z-110404T0945Z/
WABASH IN-MIAMI IN-CASS IN-
534 AM EDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CASS...MIAMI AND
WESTERN WABASH COUNTIES IN NORTH CENTRAL INDIANA IS CANCELLED...

AT 534 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE LINE OF SEVERE THUNDERSTORMS WHICH PROMPTED THE WARNING HAD MOVED
OUT OF THE AREA AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

PRECAUTIONARY/PREPARDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.

&&

LAT...LON 4058 8621 4092 8619 4092 8617 4096 8617
      4098 8610 4103 8585 4058 8586
TIME...MOT...LOC 0933Z 253DEG 51KT 4087 8584 4049 8593

$$

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 4, 3:55 AM EDT	Special Weather Statement	IWX	Cass, White	65 min
Apr 4, 4:33 AM EDT	Special Weather Statement	IWX	Fulton, Marshall, Pulaski	42 min
Apr 4, 4:53 AM EDT	Severe Thunderstorm Warning	IWX	Fulton, Kosciusko, Marshall, Noble, Whitley	41 min
Apr 4, 5:23 AM EDT	Severe Thunderstorm Warning	IWX	LaGrange, Noble, Steuben	52 min
Apr 4, 5:25 AM EDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb, Noble, Steuben, Whitley	50 min
Apr 4, 5:30 AM EDT	Severe Thunderstorm Warning	IWX	Allen, Blackford, Grant, Huntington, Wabash, Wells and 1 more	45 min
Apr 4, 5:48 AM EDT	Severe Thunderstorm Warning	IWX	Allen	31 min
Apr 4, 6:02 AM EDT	Severe Thunderstorm Warning	IWX	Adams, Jay, Wells	28 min

Nearby

Severe Thunderstorm Warnings in Indiana, 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.