Alert archive / Iowa / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 21, NWS Des Moines, IA

March 12, 2006Appanoose County, Wayne County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Mar 12, 2006, 12:41 PM CST for Appanoose County, Wayne County, Iowa. It was in force for 45 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: Mar 12, 2006, 12:41 PM CST (18:41 UTC)
Expired: Mar 12, 2006, 1:26 PM CST
In force: 45 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

Counties Appanoose County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 124 km from the middle of the area, began a volume at 18:41 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

Time	Report	Where	Remark
Mar 12, 12:58 PM CST	HAIL 1	Seymour, IA	REPORTED BY TRAINED SPOTTER.
Mar 12, 1:10 PM CST	HAIL 1	2 S Centerville, IA	REPORTED BY OFF DUTY NWS EMPLOYEE.
Mar 12, 1:13 PM CST	HAIL 0.88	Centerville, IA	REPORTED BY COUNTY SHERRIFF.

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

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 6.7 hours before the alert went out and 239 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2570 m above ground
0-6 km bulk shear: 94 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 144 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.

000 
WUUS53 KDMX 121841
SVRDMX
IAC007-185-121930-
/O.NEW.KDMX.SV.W.0021.060312T1841Z-060312T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1241 PM CST SUN MAR 12 2006

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  APPANOOSE COUNTY IN SOUTH CENTRAL IOWA.
  SOUTHEASTERN WAYNE COUNTY IN SOUTH CENTRAL IOWA.

* UNTIL 130 PM CST.

* AT 1236 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES
  EAST OF MERCER...OR 19 MILES WEST OF UNIONVILLE...AND MOVING
  NORTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR SEYMOUR BY 1255 PM CST.
  NEAR PLANO BY 100 PM CST.
  NEAR MYSTIC BY 105 PM CST.
  NEAR RATHBUN BY 110 PM CST.
  NEAR MORAVIA BY 115 PM CST.
  6 MILES NORTHWEST OF UNIONVILLE BY 120 PM CST.

THE LOCATIONS OF PROMISE CITY AND NUMA ARE ALSO IN THE PATH OF THIS
SEVERE THUNDERSTORM.

MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. IF YOU LIVE IN A
MOBILE HOME...SEEK SHELTER IN A STURDY BUILDING.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

LAT...LON 4058 9345 4059 9266 4089 9265 4090 9309
      4078 9329

$$

DONAVON

4 follow-up statements

000 
WWUS53 KDMX 121854
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1254 PM CST SUN MAR 12 2006

IAC007-185-121930-
/O.CON.KDMX.SV.W.0021.000000T0000Z-060312T1930Z/
WAYNE IA-APPANOOSE IA-
1254 PM CST SUN MAR 12 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR APPANOOSE AND
SOUTHEASTERN WAYNE COUNTIES UNTIL 130 PM CST...

AT 1249 PM CST...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 STORM WAS LOCATED NEAR
SEYMOUR...OR 14 MILES NORTHWEST OF UNIONVILLE...AND MOVING NORTHEAST
AT 55 MPH.

THE SEVERE THUNDERSTORM WILL BE...
  NEAR NUMA BY 100 PM CST.
  NEAR CENTERVILLE BY 105 PM CST.
  NEAR RATHBUN BY 110 PM CST.
  NEAR UNIONVILLE BY 115 PM CST.

THE LOCATIONS OF PLANO...MYSTIC...UDELL AND MORAVIA ARE ALSO IN THE
PATH OF THIS SEVERE THUNDERSTORM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

LAT...LON 4058 9345 4059 9266 4089 9265 4090 9309
      4078 9329

$$

DONAVON

000 
WWUS53 KDMX 121904
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
102 PM CST SUN MAR 12 2006

IAC185-121912-
/O.CAN.KDMX.SV.W.0021.000000T0000Z-060312T1930Z/
WAYNE IA-
102 PM CST SUN MAR 12 2006

...THE SEVERE THUNDERSTORM WARNING FOR WAYNE COUNTY HAS BEEN
CANCELLED...

AT 1258 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 4060 9309 4059 9266 4089 9265 4089 9309
      4080 9309

$$

IAC007-121930-
/O.CON.KDMX.SV.W.0021.000000T0000Z-060312T1930Z/
APPANOOSE IA-
102 PM CST SUN MAR 12 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR APPANOOSE
COUNTY UNTIL 130 PM CST...

AT 1258 PM CST...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 STORM WAS LOCATED 6 MILES
EAST OF SEYMOUR...OR 13 MILES NORTH OF UNIONVILLE...AND MOVING
NORTHEAST AT 55 MPH.

THE SEVERE THUNDERSTORM WILL BE...
  5 MILES SOUTHEAST OF RATHBUN BY 110 PM CST.
  NEAR UDELL BY 115 PM CST.
  NEAR UNIONVILLE BY 120 PM CST.

THIS THUNDERSTORM PRODUCED HAIL THE SIZE OF QUARTERS OVER SOUTHEAST 
WAYNE COUNTY AROUND 1255 PM.  

THE LOCATIONS OF NUMA...CINCINNATI...EXLINE AND MYSTIC ARE ALSO IN
THE PATH OF THIS SEVERE THUNDERSTORM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR LARGE DESTRUCTIVE HAIL CAPABLE OF PRODUCING
SIGNIFICANT DAMAGE. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

LAT...LON 4060 9309 4059 9266 4089 9265 4089 9309
      4080 9309

$$

DONAVON

000 
WWUS53 KDMX 121915
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
114 PM CST SUN MAR 12 2006

IAC007-121930-
/O.CON.KDMX.SV.W.0021.000000T0000Z-060312T1930Z/
APPANOOSE IA-
114 PM CST SUN MAR 12 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR APPANOOSE
COUNTY UNTIL 130 PM CST...

AT 110 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
CENTERVILLE...OR 22 MILES NORTHEAST OF UNIONVILLE...AND MOVING
NORTHEAST AT 55 MPH.

AT 113 PM...LAW ENFORCEMENT REPORT NICKEL SIZED HAIL AT CENTERVILLE.


THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
APPANOOSE COUNTY...INCLUDING THE LOCATIONS OF UDELL AND UNIONVILLE.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL...DAMAGING WINDS AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE
OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG
BUILDING BUT AWAY FROM WINDOWS.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

LAT...LON 4060 9309 4059 9266 4089 9265 4089 9309
      4080 9309

$$

DONAVON

000 
WWUS53 KDMX 121926
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
125 PM CST SUN MAR 12 2006

IAC007-121935-
/O.CAN.KDMX.SV.W.0021.000000T0000Z-060312T1930Z/
APPANOOSE IA-
125 PM CST SUN MAR 12 2006

...THE SEVERE THUNDERSTORM WARNING FOR APPANOOSE COUNTY HAS BEEN
CANCELLED...

AT 123 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EITHER WEAKENED OR
MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO
LIFE OR PROPERTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING HAS
BEEN CANCELLED.

HAIL THE SIZE OF QUARTERS WAS REPORTED AT CENTERVILLE AND LOCATIONS  
2 MILES SOUTH AROUND 118 PM. 

LAT...LON 4060 9309 4059 9266 4089 9265 4089 9309
      4080 9309

$$

DONAVON

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 12, 4:21 AM CST	Snow Advisory	DMX	Emmet, Hancock, Kossuth, Palo Alto, Pocahontas, Winnebago and 1 more	12 hr
Mar 12, 1:13 PM CST	Severe Thunderstorm Warning	DMX	Davis	39 min
Mar 12, 3:59 PM CST	Blowing Snow Advisory	DMX	Black Hawk, Boone, Bremer, Butler, Calhoun, Carroll and 18 more	12 hr
Mar 12, 3:59 PM CST	Snow and Blowing Snow Advisory	DMX	Calhoun, Cerro Gordo, Emmet, Hancock, Humboldt, Kossuth and 5 more	20 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2006 Every severe thunderstorm warning in 2006

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.