Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 113, NWS Northern Indiana

August 9, 2012Cass County, Miami County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Aug 9, 2012, 9:05 PM EDT for Cass County, Miami County, Indiana. It was in force for 40 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
Aug 9, 2012, 9:05 PM EDT (01:05 UTC)
Expired
Aug 9, 2012, 9:45 PM EDT
In force
40 min
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Hail
1.75 in
Wind
60.0 mph

Counties Cass County, IN, Miami County, IN

The radar

The Northern Indiana radar (KIWX), 81 km from the middle of the area, began a volume at 01:08 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 9, 8:40 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 1.1 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2012-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 680 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, Lincoln, IL at 00:00Z on 2012-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939587897Sfc1 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
680 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1397 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

280 
WUUS53 KIWX 100105
SVRIWX
INC017-103-100145-
/O.NEW.KIWX.SV.W.0113.120810T0105Z-120810T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
905 PM EDT THU AUG 9 2012

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CASS COUNTY IN NORTH CENTRAL INDIANA...
  CENTRAL MIAMI COUNTY IN NORTH CENTRAL INDIANA...

* UNTIL 945 PM EDT

* AT 904 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS SEVERE STORM WAS LOCATED
  15 MILES SOUTHWEST OF LOGANSPORT...AND MOVING NORTHEAST AT 30 MPH.

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

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
CLYMERS...DEACON...ANOKA...ONWARD...ADAMSBORO...NEAD...NEW WAVERLY...
HOOVER...WELLS...TWELVE MILE AND DENVER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING HALF DOLLAR SIZED HAIL SIZE 
HAIL...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 HANDLE... @ 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 4058 8638 4070 8638 4070 8650 4092 8620
      4092 8618 4095 8617 4097 8614 4080 8594
      4077 8595 4057 8629 4057 8637
TIME...MOT...LOC 0105Z 229DEG 28KT 4057 8650
WIND...HAIL 60MPH 1.75IN

$$
1 follow-up statement
630 
WWUS53 KIWX 100126
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
926 PM EDT THU AUG 9 2012

INC017-103-100145-
/O.CON.KIWX.SV.W.0113.000000T0000Z-120810T0145Z/
MIAMI IN-CASS IN-
926 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR CASS AND CENTRAL MIAMI COUNTIES...

AT 921 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS SEVERE STORM WAS
LOCATED 6 MILES WEST OF WALTON...OR ABOUT 8 MILES SOUTH OF
LOGANSPORT...AND MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  LOGANSPORT...GRISSOM AFB...PERU...WALTON...MEXICO...ANOKA...
  ONWARD...ADAMSBORO...NEW WAVERLY AND NEAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM HAS A HISTORY OF PRODUCING BASEBALL SIZE IN 
FLORA. 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 HANDLE... @ N W S I W X. REPORTS CAN ALSO BE MADE TO
THE NATIONAL PUBLIC OBSERVATION REPORTING HOTLINE TOLL FREE AT
877-633-6772.

STAY TUNED TO WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE LATEST
SEVERE WEATHER INFORMATION.

&&

LAT...LON 4058 8638 4070 8638 4070 8650 4092 8620
      4092 8618 4095 8617 4097 8614 4080 8594
      4077 8595 4057 8629 4057 8637
TIME...MOT...LOC 0125Z 229DEG 28KT 4066 8633
WIND...HAIL 60MPH 1.75IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:25 PM EDTSevere Thunderstorm WarningIWXWhite50 min
Aug 9, 8:31 PM EDTSpecial Weather StatementIWXWhitley29 min
Aug 9, 8:36 PM EDTTornado WarningIWXWhite39 min
Aug 9, 8:48 PM EDTSpecial Weather StatementIWXWabash27 min
Aug 9, 9:11 PM EDTSpecial Weather StatementIWXAllen34 min
Aug 9, 9:23 PM EDTSpecial Weather StatementIWXWabash37 min
Aug 9, 9:29 PM EDTSevere Thunderstorm WarningIWXHuntington, Wabash46 min
Aug 9, 10:29 PM EDTSpecial Weather StatementIWXAdams, Wells46 min
Aug 9, 10:49 PM EDTSevere Thunderstorm WarningIWXAdams, Jay, Wells23 min
Aug 10, 4:35 AM EDTGale WarningIWX17 hr

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.