Alert archive / Indiana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 110, NWS Northern Indiana

August 9, 2012Allen County, Whitley County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Aug 9, 2012, 3:38 PM EDT for Allen County, Whitley County, Indiana. It was in force for 52 min. 1 report 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 9, 2012, 3:38 PM EDT (19:38 UTC)
Expired
Aug 9, 2012, 4:30 PM EDT
In force
52 min
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Allen County, IN, Whitley County, IN

The radar

The Northern Indiana radar (KIWX), 44 km from the middle of the area, began a volume at 19:41 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

TimeReportWhereRemark
Aug 9, 3:39 PM EDTHAIL 1.25South Whitley, INHAIL LARGER THAN A QUARTER AND SMALLER THAN GOLF BALLS REPORTED.

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

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.6 hours before the alert went out and 224 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, Cncnati-Daytn, OH at 12:00Z on 2012-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 946 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, Cncnati-Daytn, OH at 12:00Z on 2012-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
946 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
1085 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

256 
WUUS53 KIWX 091938
SVRIWX
INC003-183-092030-
/O.NEW.KIWX.SV.W.0110.120809T1938Z-120809T2030Z/

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

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WHITLEY COUNTY IN NORTHEAST INDIANA...
  WESTERN ALLEN COUNTY IN NORTHEAST INDIANA...

* UNTIL 430 PM EDT

* AT 336 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS SEVERE STORM WAS LOCATED
  NEAR SOUTH WHITLEY...OR 7 MILES SOUTHWEST OF COLUMBIA CITY...AND
  MOVING EAST AT 25 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
  COLUMBIA CITY...
  FORT WAYNE...

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
WASHINGTON CENTER...PEABODY...LAUD...RABER...COESSE...DUNFEE...LAKE
EVERETT...ABOITE...ARCOLA...ROLLING HILLS AND WALLEN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4099 8535 4101 8535 4101 8544 4104 8568
      4118 8568 4121 8509 4096 8510
TIME...MOT...LOC 1938Z 272DEG 20KT 4110 8558
WIND...HAIL 60MPH 1.00IN

$$
2 follow-up statements
505 
WWUS53 KIWX 091956
SVSIWX

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

INC003-183-092030-
/O.CON.KIWX.SV.W.0110.000000T0000Z-120809T2030Z/
ALLEN IN-WHITLEY IN-
356 PM EDT THU AUG 9 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR SOUTHEASTERN WHITLEY AND WESTERN ALLEN COUNTIES...

AT 336 PM EDT...THE PUBLIC REPORTED A SEVERE THUNDERSTORM PRODUCING 
HALF DOLLAR SIZE HAIL NEAR SOUTH WHITLEY. THIS SEVERE STORM WAS 
LOCATED 19 MILES WEST OF FORT WAYNE...OR ABOUT 8 MILES SOUTH OF 
COLUMBIA CITY...AND MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  FORT WAYNE...RABER...COESSE...LAKE EVERETT...DUNFEE...ARCOLA...
  ABOITE...ROLLING HILLS...WALLEN AND NINE MILE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4099 8535 4101 8535 4101 8544 4103 8562
      4112 8555 4121 8509 4096 8510
TIME...MOT...LOC 1955Z 285DEG 22KT 4104 8546
WIND...HAIL 60MPH 1.00IN

$$
733 
WWUS53 KIWX 092028
SVSIWX

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

INC003-183-092036-
/O.EXP.KIWX.SV.W.0110.000000T0000Z-120809T2030Z/
ALLEN IN-WHITLEY IN-
428 PM EDT THU AUG 9 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WHITLEY AND
WESTERN ALLEN COUNTIES WILL EXPIRE AT 430 PM EDT...

AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAD MOVED INTO 
NORTHEASTERN HUNTINGTON COUNTY. THEREFORE...THE SEVERE THUNDERSTORM 
WARNING HAS BEEN ALLOWED TO EXPIRE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4099 8535 4101 8535 4101 8544 4103 8562
      4112 8555 4121 8509 4096 8510
TIME...MOT...LOC 2026Z 285DEG 22KT 4099 8522

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 4:51 AM EDTGale WatchIWX24 hr
Aug 9, 4:51 AM EDTRip Current StatementIWX3 days
Aug 9, 6:53 AM EDTSmall Craft AdvisoryIWX27 hr
Aug 9, 3:29 PM EDTSpecial Weather StatementIWXWhitley31 min
Aug 9, 4:19 PM EDTSevere Thunderstorm WarningIWXAllen, Huntington, Wells, Whitley41 min
Aug 9, 5:05 PM EDTSpecial Weather StatementIWXAdams25 min
Aug 9, 7:49 PM EDTSpecial Weather StatementIWXWhite26 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.