Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 83, NWS Northern Indiana

July 19, 20124 counties in Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Jul 19, 2012, 1:03 AM EDT for 4 counties in Indiana. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 19, 2012, 1:03 AM EDT (05:03 UTC)
Expired
Jul 19, 2012, 2:00 AM EDT
In force
57 min
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Hail
0.5 in
Wind
70.0 mph

Counties Elkhart County, IN, Kosciusko County, IN, Marshall County, IN, Saint Joseph County, IN

The radar

The Northern Indiana radar (KIWX), 27 km from the middle of the area, began a volume at 05:04 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.

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 5.1 hours before the alert went out and 241 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, Detroit, MI at 00:00Z on 2012-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 66 joules per kilogram.LCLLFCEL10008507005003002001001 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, Detroit, MI at 00:00Z on 2012-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.1939Sfc1 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
66 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
1042 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
97 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.

989 
WUUS53 KIWX 190503
SVRIWX
INC039-085-099-141-190600-
/O.NEW.KIWX.SV.W.0083.120719T0503Z-120719T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
103 AM EDT THU JUL 19 2012

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN KOSCIUSKO COUNTY IN NORTH CENTRAL INDIANA...
  NORTHEASTERN MARSHALL COUNTY IN NORTH CENTRAL INDIANA...
  EASTERN ST. JOSEPH COUNTY IN NORTH CENTRAL INDIANA...
  ELKHART COUNTY IN NORTH CENTRAL INDIANA...

* UNTIL 200 AM EDT

* AT 1259 AM EDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF       
  SEVERE THUNDERSTORMS PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70   
  MPH. THESE SEVERE STORMS WERE LOCATED FROM NEAR SOUTH BEND TO      
  LAKEVILLE TO PLYMOUTH AND MOVING EAST AT 40 MPH. WIND DAMAGE MAY   
  BEGIN TO OCCUR 5 TO 10 MILES AHEAD OF ANY THUNDER OR LIGHTNING     
  ALONG A LEADING GUST FRONT. 

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...        
  OSCEOLA...
  WAKARUSA...NAPPANEE AND ELKHART...
  DUNLAP...
  NEW PARIS...GOSHEN AND MILFORD...
  SYRACUSE...MIDDLEBURY AND NORTH WEBSTER...
  MILLERSBURG...

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
JIMTOWN...LOCKE...SOUTHWEST...HASTINGS...GRAVELTON...FORAKER...
WATERFORD MILLS...OAKWOOD PARK...BENTON AND LAKE WAWASEE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND 
DAMAGE ACROSS LAPORTE AND ST JOSEPH COUNTY. THIS IS AN EXTREMELY 
DANGEROUS SITUATION. GO TO A BASEMENT OR SMALL INTERIOR ROOM. 
EVACUATE MOBILE HOMES...AND SEEK SHELTER INSIDE A STURDY STRUCTURE.


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 4176 8566 4124 8567 4126 8624 4176 8622
TIME...MOT...LOC 0500Z 269DEG 44KT 4151 8614
WIND...HAIL 70MPH <.50IN

$$
2 follow-up statements
450 
WWUS53 KIWX 190524
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
124 AM EDT THU JUL 19 2012

INC039-085-099-141-190600-
/O.CON.KIWX.SV.W.0083.000000T0000Z-120719T0600Z/
ELKHART IN-ST. JOSEPH IN-MARSHALL IN-KOSCIUSKO IN-
124 AM EDT THU JUL 19 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM EDT
FOR NORTHERN KOSCIUSKO...NORTHEASTERN MARSHALL...EASTERN ST. JOSEPH
AND ELKHART COUNTIES...

AT 120 AM EDT...TRAINED WEATHER SPOTTERS REPORTED A LINE OF SEVERE
THUNDERSTORMS  PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE
SEVERE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM GRANGER TO 5 
MILES WEST OF WAKARUSA TO BOURBON...AND MOVING EAST AT 50 MPH. A 
GUST FRONT 5 TO 10 MILES AHEAD OF THE ACTUAL THUNDERSTORMS MAY ALSO 
BE PRODUCING WIND GUSTS TO 60 MPH ACROSS ELKHART AND KOSCIUSKO 
COUNTIES. 

LOCATIONS IMPACTED INCLUDE...
  NAPPANEE...ELKHART...SIMONTON LAKE...DUNLAP...GOSHEN...SYRACUSE...
  WAKARUSA...MILFORD...NEW PARIS AND BRISTOL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF SEVERE THUNDERSTORMS HAS A HISTORY OF PRODUCING 
WIDESPREAD WIND DAMAGE ACROSS LAPORTE COUNTY AND 70 MPH WINDS NEAR 
LAKEVILLE. THIS IS A DANGEROUS SITUATION. GO TO A BASEMENT OR SMALL 
INTERIOR ROOM. EVACUATE MOBILE HOMES...AND SEEK SHELTER INSIDE A 
STURDY STRUCTURE.

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 4176 8566 4124 8567 4126 8624 4176 8622
TIME...MOT...LOC 0523Z 269DEG 44KT 4173 8605 4153 8602
          4127 8601
WIND...HAIL 70MPH <.50IN

$$
875 
WWUS53 KIWX 190557
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
157 AM EDT THU JUL 19 2012

INC039-085-099-141-190607-
/O.EXP.KIWX.SV.W.0083.000000T0000Z-120719T0600Z/
ELKHART IN-ST. JOSEPH IN-MARSHALL IN-KOSCIUSKO IN-
157 AM EDT THU JUL 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN KOSCIUSKO...
NORTHEASTERN MARSHALL...EASTERN ST. JOSEPH AND ELKHART COUNTIES WILL
EXPIRE AT 200 AM EDT...

AT 157 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE LINE OF SEVERE THUNDERSTORMS WHICH PROMPTED THE WARNING HAD
WEAKENED. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN
ALLOWED TO EXPIRE.

PRECAUTIONARY/PREPAREDNESS 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 4176 8566 4124 8567 4126 8624 4176 8622
TIME...MOT...LOC 0557Z 269DEG 44KT 4174 8549 4154 8546
          4128 8545

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 9:03 PM EDTSpecial Weather StatementIWXSteuben57 min
Jul 18, 10:50 PM EDTSpecial Marine WarningIWX115 min
Jul 18, 11:43 PM EDTSevere Thunderstorm WarningIWXLaPorte, Saint Joseph62 min
Jul 19, 12:26 AM EDTSevere Thunderstorm WarningIWXLaPorte, Marshall, Saint Joseph, Starke64 min
Jul 19, 12:29 AM EDTFlash Flood WarningIWXLaPorte, Saint Joseph3 hr
Jul 19, 1:12 AM EDTAreal Flood AdvisoryIWXMarshall, Saint Joseph, Starke3 hr
Jul 19, 1:45 AM EDTSpecial Weather StatementIWXLaGrange, Noble, Whitley60 min
Jul 19, 2:33 AM EDTSpecial Weather StatementIWXDeKalb, LaGrange, Noble, Steuben57 min
Jul 19, 4:04 AM EDTSpecial Weather StatementIWXElkhart, Saint Joseph41 min
Jul 19, 5:19 AM EDTAreal Flood AdvisoryIWXElkhart, Fulton, Kosciusko, LaGrange, Marshall, Noble and 2 more3 hr
Jul 19, 5:35 AM EDTFlash Flood WarningIWXAllen, DeKalb, Huntington, Kosciusko, LaGrange, Noble and 4 more115 min
Jul 19, 5:53 AM EDTFlash Flood WarningIWXAllen, DeKalb3 hr
Jul 19, 6:22 AM EDTFlash Flood WarningIWXElkhart, LaGrange, LaPorte, Noble, Saint Joseph3 hr
Jul 19, 6:44 AM EDTSpecial Weather StatementIWXHuntington, Kosciusko, Miami, Wabash, Whitley61 min
Jul 19, 3:28 PM EDTSmall Craft AdvisoryIWX31 hr
Jul 19, 6:03 PM EDTRip Current StatementIWX34 hr
Jul 19, 7:16 PM EDTSpecial Weather StatementIWXMiami44 min
Jul 19, 7:19 PM EDTSpecial Weather StatementIWXBlackford41 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.