Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 94, NWS Northern Indiana

August 4, 20124 counties in Indiana; Berrien County, Michigan

NWS Northern Indiana issued this severe thunderstorm warning at Aug 4, 2012, 4:35 PM CDT for 4 counties in Indiana; Berrien County, Michigan. It was in force for 70 min. 8 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: Aug 4, 2012, 4:35 PM CDT (21:35 UTC)
Expired: Aug 4, 2012, 5:45 PM CDT
In force: 70 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.5 in
Wind: 70.0 mph

Counties LaPorte County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Berrien County, MI

The radar

The Northern Indiana radar (KIWX), 87 km from the middle of the area, began a volume at 21:38 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
Aug 4, 4:38 PM CDT	HAIL 1	2 E Aldine, IN
Aug 4, 4:57 PM CDT	TSTM WND DMG	Wanatah, IN	POWER LINES DOWN ALONG US 421 NEAR WANATAH AND HAIL SLIGHTLY LARGER THAN QUARTERS ALSO REPORTED.
Aug 4, 4:57 PM CDT	HAIL 1.25	Wanatah, IN	POWER LINES DOWN ALONG US 421 NEAR WANATAH AND HAIL SLIGHTLY LARGER THAN QUARTERS ALSO REPORTED.
Aug 4, 4:58 PM CDT	HAIL 1	Ober, IN
Aug 4, 5:10 PM CDT	TSTM WND DMG	La Porte, IN	2 LARGE TREES DOWN.
Aug 4, 5:20 PM CDT	TSTM WND DMG	Rolling Prairie, IN	TREES AND POWER LINES DOWN.
Aug 4, 5:20 PM CDT	TORNADO	Rolling Prairie, IN	PRELIMINARY DAMAGE SURVEY BY EMERGENCY MANAGER INDICATES DAMAGE TO A RESIDENCE SOUTHEAST OF ROLLING PRARIE CONSISTENT WITH A TORNADIC ROTATION. WINDS DESTROYED THE CARPORT GARAGE AND ROOF SEPARATED SLIGHTLY FROM THE FRAME OF THE HOME. A NEARBY BARN WAS ALSO DE
Aug 4, 5:50 PM CDT	TSTM WND DMG	5 N La Porte, IN	A SMALL TREE REPORTED DOWN.

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
Aug 4, 4:35 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.6 hours before the alert went out and 229 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: 3403 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 817 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

314 
WUUS53 KIWX 042135
SVRIWX
INC091-131-141-149-MIC021-042245-
/O.NEW.KIWX.SV.W.0094.120804T2135Z-120804T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
435 PM CDT SAT AUG 4 2012

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BERRIEN COUNTY IN SOUTHWEST MICHIGAN...
  NORTHERN PULASKI COUNTY IN NORTHWEST INDIANA...
  LA PORTE COUNTY IN NORTHWEST INDIANA...
  SOUTHWESTERN ST. JOSEPH COUNTY IN NORTH CENTRAL INDIANA...
  STARKE COUNTY IN NORTHWEST INDIANA...

* UNTIL 545 PM CDT/645 PM EDT/

* AT 434 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
  IN EXCESS OF 70 MPH.  THESE SEVERE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 26 MILES WEST OF MICHIGAN CITY TO 18 MILES WEST OF
  WESTVILLE TO 32 MILES WEST OF MEDARYVILLE...AND MOVING EAST AT 35
  MPH.

* LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
  WESTVILLE...
  WANATAH...TRAIL CREEK AND MICHIGAN CITY...
  LA CROSSE...
  LA PORTE...
  NEW BUFFALO...MEDARYVILLE AND KINGSFORD HEIGHTS...
  NORTH JUDSON...

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
PINHOOK...OTIS...HASKELL...WATERFORD...SOUTH WANATAH...PINOLA...
POTTAWATTOMIE PARK...MICHIANA...UNION MILLS...MICHIANA SHORES...GRAND
BEACH AND THOMASTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 
70 MPH OVER NORTHEAST ILLINOIS AND INCLUDING THE CHICAGO METRO AREA. 
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS!

TO REPORT SEVERE WEATHER...POST YOUR INFORMATION ON THE NATIONAL
WEATHER SERVICE NORTHERN INDIANA FACEBOOK PAGE...OR YOU CAN POST ON
TWITTER WITH THE HASH TAG... @ N W S I W X. REPORTS CAN ALSO BE MADE
TO THE NATIONAL PUBLIC OBSERVATION REPORTING HOTLINE TOLL FREE AT
877-633-6772.

&&

LAT...LON 4184 8671 4192 8661 4196 8658 4164 8649
      4102 8648 4099 8693 4172 8695
TIME...MOT...LOC 2135Z 256DEG 29KT 4180 8735 4148 8723
          4097 8747
WIND...HAIL 70MPH <.50IN

$$

3 follow-up statements

384 
WWUS53 KIWX 042154
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
454 PM CDT SAT AUG 4 2012

INC091-131-141-149-MIC021-042245-
/O.CON.KIWX.SV.W.0094.000000T0000Z-120804T2245Z/
STARKE IN-ST. JOSEPH IN-LA PORTE IN-PULASKI IN-BERRIEN MI-
454 PM CDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM
CDT/645 PM EDT/ FOR SOUTHWESTERN BERRIEN...NORTHERN PULASKI...LA
PORTE...WESTERN ST. JOSEPH AND STARKE COUNTIES...

AT 452 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE SEVERE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 12 MILES NORTHWEST OF MICHIGAN
CITY TO 4 MILES SOUTHWEST OF WESTVILLE TO 17 MILES SOUTHWEST OF
MEDARYVILLE...AND MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  WESTVILLE...MICHIGAN CITY...TRAIL CREEK...LA PORTE...KNOX...
  WINAMAC...WANATAH...LA CROSSE...LONG BEACH AND MEDARYVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING 
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. SEEK SHELTER NOW INSIDE A 
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

TO REPORT SEVERE WEATHER...POST YOUR INFORMATION ON THE NATIONAL
WEATHER SERVICE NORTHERN INDIANA FACEBOOK PAGE...OR YOU CAN POST ON
TWITTER WITH THE HASH TAG... @ N W S I W X. REPORTS CAN ALSO BE MADE
TO THE NATIONAL PUBLIC OBSERVATION REPORTING HOTLINE TOLL FREE AT
877-633-6772.

&&

LAT...LON 4184 8671 4192 8661 4196 8658 4164 8649
      4102 8648 4099 8693 4172 8695
TIME...MOT...LOC 2154Z 256DEG 29KT 4181 8706 4150 8692
          4099 8716
WIND...HAIL 70MPH <.50IN

$$

523 
WWUS53 KIWX 042207
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
507 PM CDT SAT AUG 4 2012

INC091-131-141-149-MIC021-042245-
/O.CON.KIWX.SV.W.0094.000000T0000Z-120804T2245Z/
STARKE IN-ST. JOSEPH IN-LA PORTE IN-PULASKI IN-BERRIEN MI-
507 PM CDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM
CDT/645 PM EDT/ FOR SOUTHWESTERN BERRIEN...NORTHERN PULASKI...LA
PORTE...WESTERN ST. JOSEPH AND STARKE COUNTIES...

AT 501 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 80 MPH. THESE SEVERE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 9 MILES NORTHWEST OF LONG BEACH
TO 4 MILES SOUTHEAST OF WESTVILLE TO 12 MILES SOUTHWEST OF
MEDARYVILLE...AND MOVING EAST AT 35 MPH.

LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
  LA PORTE...
  NEW BUFFALO...MEDARYVILLE AND KINGSFORD HEIGHTS...
  NORTH JUDSON...
  THREE OAKS...SHOREWOOD-TOWER HILL AND KNOX...
  NEW CARLISLE...
  WINAMAC...

OTHER LOCATIONS IMPACTED BY THIS LINE OF SEVERE THUNDERSTORMS INCLUDE
MICHIANA...GRAND BEACH...CLARKS...SPRINGVILLE...HANNA...MICHIANA
SHORES...KINGSBURY...ENGLISH LAKE...TRACY AND UNION PIER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING 
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH AND HAS INTENSIFIED. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

TO REPORT SEVERE WEATHER...POST YOUR INFORMATION ON THE NATIONAL
WEATHER SERVICE NORTHERN INDIANA FACEBOOK PAGE...OR YOU CAN POST ON
TWITTER WITH THE HASH TAG... @ N W S I W X. REPORTS CAN ALSO BE MADE
TO THE NATIONAL PUBLIC OBSERVATION REPORTING HOTLINE TOLL FREE AT
877-633-6772.

&&

LAT...LON 4184 8671 4192 8661 4196 8658 4164 8649
      4102 8648 4099 8693 4172 8695
TIME...MOT...LOC 2206Z 256DEG 29KT 4183 8693 4152 8679
          4101 8704
WIND...HAIL 80MPH <.50IN

$$

872 
WWUS53 KIWX 042227
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
527 PM CDT SAT AUG 4 2012

INC091-131-141-149-MIC021-042245-
/O.CON.KIWX.SV.W.0094.000000T0000Z-120804T2245Z/
STARKE IN-ST. JOSEPH IN-LA PORTE IN-PULASKI IN-BERRIEN MI-
527 PM CDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM
CDT/645 PM EDT/ FOR SOUTHWESTERN BERRIEN...NORTHERN PULASKI...
NORTHEASTERN LA PORTE...SOUTHWESTERN ST. JOSEPH AND STARKE
COUNTIES...

AT 624 PM EDT/524 PM CDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR
CONTINUED TO INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF
PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE SEVERE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 5 MILES NORTH OF NEW BUFFALO
TO 11 MILES SOUTHWEST OF NEW CARLISLE TO 13 MILES WEST OF WINAMAC...
AND MOVING EAST AT 35 MPH.

LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
  THREE OAKS...SHOREWOOD-TOWER HILL AND KNOX...
  NEW CARLISLE...
  WINAMAC...

OTHER LOCATIONS IMPACTED BY THIS LINE OF SEVERE THUNDERSTORMS INCLUDE
HARBERT...DENHAM...HUDSON LAKE...SAWYER...RIPLEY...WINONA...
GROVERTOWN...BASS LAKE...BEARDSTOWN AND OBER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS LINE OF SEVERE THUNDERSTORMS. IF YOU ARE IN THE
PATH...PREPARE IMMEDIATELY FOR DESTRUCTIVE WINDS IN EXCESS OF 80
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...POST YOUR INFORMATION ON THE NATIONAL
WEATHER SERVICE NORTHERN INDIANA FACEBOOK PAGE...OR YOU CAN POST ON
TWITTER WITH THE HASH TAG... @ N W S I W X. REPORTS CAN ALSO BE MADE
TO THE NATIONAL PUBLIC OBSERVATION REPORTING HOTLINE TOLL FREE AT
877-633-6772.

&&

LAT...LON 4100 8686 4150 8661 4178 8682 4184 8671
      4192 8661 4196 8658 4164 8649 4102 8648
TIME...MOT...LOC 2227Z 256DEG 29KT 4187 8671 4156 8657
          4105 8682
WIND...HAIL 70MPH <.50IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 2:48 PM CDT	Special Weather Statement	IWX	Cass	27 min
Aug 4, 2:55 PM CDT	Severe Thunderstorm Warning	IWX	Cass, Miami	50 min
Aug 4, 3:17 PM CDT	Rip Current Statement	IWX		38 hr
Aug 4, 3:20 PM CDT	Small Craft Advisory	IWX		31 hr
Aug 4, 3:24 PM CDT	Special Weather Statement	IWX	Grant	21 min
Aug 4, 3:44 PM CDT	Special Weather Statement	IWX	Huntington	31 min
Aug 4, 3:49 PM CDT	Special Weather Statement	IWX	Miami	26 min
Aug 4, 3:51 PM CDT	Special Weather Statement	IWX	Marshall	24 min
Aug 4, 3:57 PM CDT	Special Marine Warning	IWX		2 hr
Aug 4, 4:17 PM CDT	Special Weather Statement	IWX	Huntington, Wells, Whitley	28 min
Aug 4, 4:18 PM CDT	Special Weather Statement	IWX	Kosciusko, Marshall	27 min
Aug 4, 4:38 PM CDT	Special Weather Statement	IWX	Fulton	52 min
Aug 4, 4:50 PM CDT	Severe Thunderstorm Warning	IWX	Fulton, Marshall, Pulaski	40 min
Aug 4, 5:03 PM CDT	Special Weather Statement	IWX	Allen	27 min
Aug 4, 5:08 PM CDT	Severe Thunderstorm Warning	IWX	Saint Joseph	52 min
Aug 4, 5:11 PM CDT	Severe Thunderstorm Warning	IWX	Marshall, Saint Joseph, Starke	49 min
Aug 4, 5:16 PM CDT	Special Weather Statement	IWX	LaGrange	29 min
Aug 4, 5:18 PM CDT	Tornado Warning	IWX	LaPorte, Saint Joseph	42 min
Aug 4, 5:39 PM CDT	Severe Thunderstorm Warning	IWX	Elkhart, Kosciusko, LaGrange, Noble	51 min
Aug 4, 6:01 PM CDT	Severe Thunderstorm Warning	IWX	Fulton, Kosciusko, Marshall, Miami, Wabash	33 min
Aug 4, 6:12 PM CDT	Severe Thunderstorm Warning	IWX	Allen, Kosciusko, Noble, Whitley	48 min
Aug 4, 6:23 PM CDT	Severe Thunderstorm Warning	IWX	Grant	52 min
Aug 4, 6:29 PM CDT	Severe Thunderstorm Warning	IWX	Allen, Huntington, Wabash, Wells, Whitley	46 min
Aug 4, 6:31 PM CDT	Special Weather Statement	IWX	Steuben	44 min
Aug 4, 6:40 PM CDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb	50 min
Aug 4, 6:57 PM CDT	Areal Flood Advisory	IWX	Allen, DeKalb, Steuben	93 min
Aug 4, 5:50 PM CDT	Severe Thunderstorm Warning	IWX	Berrien, Cass, Saint Joseph	28 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2012 Severe Thunderstorm Warnings in Michigan, 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.