Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 98, NWS Northern Indiana

August 4, 20124 counties in Indiana; Cass County, Saint Joseph County, Michigan

NWS Northern Indiana issued this severe thunderstorm warning at Aug 4, 2012, 6:39 PM EDT for 4 counties in Indiana; Cass County, Saint Joseph County, Michigan. It was in force for 51 min. 3 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, 6:39 PM EDT (22:39 UTC)
Expired: Aug 4, 2012, 7:30 PM EDT
In force: 51 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.5 in
Wind: 60.0 mph

Counties Elkhart County, IN, Kosciusko County, IN, LaGrange County, IN, Noble County, IN, Cass County, MI, Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 45 km from the middle of the area, began a volume at 22:43 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, 6:48 PM EDT	TSTM WND DMG	3 W Elkhart, IN	LARGE BRANCHES DOWN NEAR COUNTY ROAD 1.
Aug 4, 6:50 PM EDT	TSTM WND GST 65	1 E Elkhart, IN
Aug 4, 7:13 PM EDT	TSTM WND GST 65	2 N North Webster, IN	ESTIMATED 65 MPH WINDS AT NATIONAL WEATHER SERVICE OFFICE.

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, 5:35 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.7 hours before the alert went out and 211 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: 79 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 1364 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: -15 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.

598 
WUUS53 KIWX 042239
SVRIWX
INC039-085-087-113-MIC027-149-042330-
/O.NEW.KIWX.SV.W.0098.120804T2239Z-120804T2330Z/

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

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CASS COUNTY IN SOUTHWEST MICHIGAN...
  ST. JOSEPH COUNTY IN SOUTHWEST MICHIGAN...
  NORTHERN KOSCIUSKO COUNTY IN NORTH CENTRAL INDIANA...
  NORTHWESTERN NOBLE COUNTY IN NORTHEAST INDIANA...
  WESTERN LAGRANGE COUNTY IN NORTHEAST INDIANA...
  ELKHART COUNTY IN NORTH CENTRAL INDIANA...

* UNTIL 730 PM EDT

* AT 638 PM 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 12 MILES WEST OF ELKHART TO 6 MILES WEST OF WAKARUSA
  TO 17 MILES SOUTHWEST OF NAPPANEE...AND MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
  WAKARUSA...
  SIMONTON LAKE...NAPPANEE AND ELKHART...
  MILFORD...NEW PARIS AND GOSHEN...
  SYRACUSE AND MIDDLEBURY...
  WHITE PIGEON...CONSTANTINE AND MILLERSBURG...

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
JIMTOWN...ADAMSVILLE...SOUTHWEST...LOCKE...JUNO LAKE...HASTINGS...
GRAVELTON...FORAKER...CLUNETTE...SHAVEHEAD LAKE...UNION AND WATERFORD
MILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
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 4208 8530 4186 8530 4139 8556 4127 8606
      4177 8607 4188 8586
TIME...MOT...LOC 2239Z 246DEG 49KT 4170 8619 4156 8611
          4131 8624
WIND...HAIL 60MPH <.50IN

$$

2 follow-up statements

545 
WWUS53 KIWX 042251
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
651 PM EDT SAT AUG 4 2012

INC039-085-087-113-MIC027-149-042330-
/O.CON.KIWX.SV.W.0098.000000T0000Z-120804T2330Z/
ELKHART IN-LAGRANGE IN-NOBLE IN-KOSCIUSKO IN-ST. JOSEPH MI-CASS MI-
651 PM EDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHEASTERN CASS...ST. JOSEPH...NORTHERN KOSCIUSKO...
NORTHWESTERN NOBLE...WESTERN LAGRANGE AND ELKHART COUNTIES...

AT 647 PM EDT...THE PUBLIC REPORTED 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 5 MILES WEST OF
SIMONTON LAKE TO 4 MILES SOUTHWEST OF DUNLAP TO 9 MILES SOUTHWEST OF
NAPPANEE...AND MOVING NORTHEAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  GOSHEN...SYRACUSE...THREE RIVERS...LIGONIER...STURGIS...BRISTOL...
  NEW PARIS...MILFORD...MIDDLEBURY AND MILLERSBURG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 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 4208 8530 4186 8530 4139 8556 4127 8606
      4177 8607 4188 8586
TIME...MOT...LOC 2251Z 246DEG 49KT 4177 8599 4163 8591
          4134 8600
WIND...HAIL 60MPH <.50IN

$$

490 
WWUS53 KIWX 042319 RRA
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
719 PM EDT SAT AUG 4 2012

INC039-085-087-113-MIC027-149-042330-
/O.CON.KIWX.SV.W.0098.000000T0000Z-120804T2330Z/
ELKHART IN-LAGRANGE IN-NOBLE IN-KOSCIUSKO IN-ST. JOSEPH MI-CASS MI-
719 PM EDT SAT AUG 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHEASTERN CASS...ST. JOSEPH...NORTHEASTERN KOSCIUSKO...
NORTHWESTERN NOBLE...WESTERN LAGRANGE AND EASTERN ELKHART COUNTIES...

AT 715 PM 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 5 MILES SOUTHWEST OF WHITE PIGEON TO 5 MILES EAST
OF MIDDLEBURY TO 6 MILES SOUTH OF LIGONIER...AND MOVING EAST AT 45
MPH.

LOCATIONS IN THE PATH OF SEVERE THUNDERSTORMS INCLUDE...
  STURGIS AND CENTREVILLE...

OTHER LOCATIONS IMPACTED BY THIS LINE OF SEVERE THUNDERSTORMS INCLUDE
SCOTT...KLINGER LAKE AND HOWE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 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 4136 8571 4188 8586 4208 8530 4186 8530
      4139 8556
TIME...MOT...LOC 2319Z 266DEG 40KT 4176 8566 4166 8555
          4139 8558
WIND...HAIL 60MPH <.50IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 3:48 PM EDT	Special Weather Statement	IWX	Cass	27 min
Aug 4, 3:55 PM EDT	Severe Thunderstorm Warning	IWX	Cass, Miami	50 min
Aug 4, 4:17 PM EDT	Rip Current Statement	IWX		38 hr
Aug 4, 4:20 PM EDT	Small Craft Advisory	IWX		31 hr
Aug 4, 4:24 PM EDT	Special Weather Statement	IWX	Grant	21 min
Aug 4, 4:44 PM EDT	Special Weather Statement	IWX	Huntington	31 min
Aug 4, 4:49 PM EDT	Special Weather Statement	IWX	Miami	26 min
Aug 4, 4:51 PM EDT	Special Weather Statement	IWX	Marshall	24 min
Aug 4, 4:57 PM EDT	Special Marine Warning	IWX		2 hr
Aug 4, 5:17 PM EDT	Special Weather Statement	IWX	Huntington, Wells, Whitley	28 min
Aug 4, 5:18 PM EDT	Special Weather Statement	IWX	Kosciusko, Marshall	27 min
Aug 4, 5:35 PM EDT	Severe Thunderstorm Warning	IWX	LaPorte, Pulaski, Saint Joseph, Starke	70 min
Aug 4, 5:38 PM EDT	Special Weather Statement	IWX	Fulton	52 min
Aug 4, 5:50 PM EDT	Severe Thunderstorm Warning	IWX	Fulton, Marshall, Pulaski	40 min
Aug 4, 6:03 PM EDT	Special Weather Statement	IWX	Allen	27 min
Aug 4, 6:08 PM EDT	Severe Thunderstorm Warning	IWX	Saint Joseph	52 min
Aug 4, 6:11 PM EDT	Severe Thunderstorm Warning	IWX	Marshall, Saint Joseph, Starke	49 min
Aug 4, 6:16 PM EDT	Special Weather Statement	IWX	LaGrange	29 min
Aug 4, 6:18 PM EDT	Tornado Warning	IWX	LaPorte, Saint Joseph	42 min
Aug 4, 7:01 PM EDT	Severe Thunderstorm Warning	IWX	Fulton, Kosciusko, Marshall, Miami, Wabash	33 min
Aug 4, 7:12 PM EDT	Severe Thunderstorm Warning	IWX	Allen, Kosciusko, Noble, Whitley	48 min
Aug 4, 7:23 PM EDT	Severe Thunderstorm Warning	IWX	Grant	52 min
Aug 4, 7:29 PM EDT	Severe Thunderstorm Warning	IWX	Allen, Huntington, Wabash, Wells, Whitley	46 min
Aug 4, 7:31 PM EDT	Special Weather Statement	IWX	Steuben	44 min
Aug 4, 7:40 PM EDT	Severe Thunderstorm Warning	IWX	Allen, DeKalb	50 min
Aug 4, 7:57 PM EDT	Areal Flood Advisory	IWX	Allen, DeKalb, Steuben	93 min
Aug 4, 6:50 PM EDT	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.