Alert archive / Iowa / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 49, NWS Des Moines, IA

April 12, 20145 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Apr 12, 2014, 10:44 PM CDT for 5 counties in Iowa. It was in force for 46 min. 8 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: Apr 12, 2014, 10:44 PM CDT (03:44 UTC)
Expired: Apr 12, 2014, 11:30 PM CDT
In force: 46 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Clarke County, IA, Lucas County, IA, Marion County, IA, Monroe County, IA, Warren County, IA

The radar

The Des Moines radar (KDMX), 71 km from the middle of the area, began a volume at 03:45 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
Apr 12, 10:55 PM CDT	HAIL 1	6 W Lacona, IA	NICKEL AND QUARTER SIZED HAIL REPORTED IN LIBERTY CENTER. VIA SOCIAL MEDIA.
Apr 12, 11:00 PM CDT	TSTM WND GST 60	N Chariton Airport, IA	60 MPH GUST REPORTED BY CHARITON AWOS.
Apr 12, 11:10 PM CDT	TSTM WND GST 60	N Knoxville Airport, IA	60 MPH GUST REPORTED BY KNOXVILLE AWOS.
Apr 12, 11:11 PM CDT	HAIL 0.88	5 W Chariton Airport, IA	NICKEL SIZED HAIL.
Apr 12, 11:13 PM CDT	HAIL 1	Ne Chariton, IA	BROADCAST MEDIA REPORTED QUARTER TO DIME SIZE HAIL
Apr 12, 11:15 PM CDT	TSTM WND GST 61	N Knoxville Airport, IA	REPORTED BY KNOXVILLE AWOS.
Apr 12, 11:20 PM CDT	TSTM WND GST 61	N Knoxville Airport, IA	61 MPH WIND GUST CONTINUES TO BE REPORTED BY KNOXVILLE AWOS.
Apr 12, 11:20 PM CDT	TSTM WND GST 61	N Knoxville Airport, IA	REPORTED BY KNOXVILLE AWOS.

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
Apr 12, 6:26 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Apr 12, 9:38 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.7 hours before the alert went out and 226 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: 661 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1978 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

618 
WUUS53 KDMX 130344
SVRDMX
IAC039-117-125-135-181-130430-
/O.NEW.KDMX.SV.W.0049.140413T0344Z-140413T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1044 PM CDT SAT APR 12 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WARREN COUNTY IN SOUTH CENTRAL IOWA...
  MARION COUNTY IN SOUTH CENTRAL IOWA...
  LUCAS COUNTY IN SOUTH CENTRAL IOWA...
  WESTERN MONROE COUNTY IN SOUTH CENTRAL IOWA...
  EASTERN CLARKE COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 1130 PM CDT

* AT 1044 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 13 MILES
  NORTHWEST OF CHARITON...MOVING EAST AT 50 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  INDIANOLA...PELLA...KNOXVILLE...CHARITON...PLEASANTVILLE...
  MELCHER-DALLAS...LAKE RED ROCK...KNOXVILLE RACEWAY...MILO...
  HARTFORD...RUSSELL...LOVILIA...BUSSEY...LACONA...HARVEY...LUCAS...
  WOODBURN...WILLIAMSON...HAMILTON AND DERBY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4146 9365 4151 9288 4139 9287 4117 9287
      4116 9286 4090 9286 4090 9368
TIME...MOT...LOC 0344Z 269DEG 44KT 4115 9351 

HAIL...1.00IN
WIND...60MPH

$$

BEERENDS

4 follow-up statements

792 
WWUS53 KDMX 130402
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1102 PM CDT SAT APR 12 2014

IAC039-130412-
/O.CAN.KDMX.SV.W.0049.000000T0000Z-140413T0430Z/
CLARKE IA-

1102 PM CDT SAT APR 12 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CLARKE COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT SUNDAY
MORNING FOR SOUTHERN IOWA.A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 500 AM CDT SUNDAY MORNING FOR  IOWA.

LAT...LON 4090 9356 4147 9356 4151 9290 4150 9288
      4117 9287 4116 9286 4090 9286
TIME...MOT...LOC 0402Z 269DEG 44KT 4115 9321 

$$

IAC117-125-135-181-130430-
/O.CON.KDMX.SV.W.0049.000000T0000Z-140413T0430Z/
WARREN IA-MARION IA-LUCAS IA-MONROE IA-
1102 PM CDT SAT APR 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR EASTERN WARREN...MARION...LUCAS AND WESTERN MONROE COUNTIES...

AT 1102 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
MELCHER-DALLAS...OR 10 MILES NORTHEAST OF CHARITON...MOVING EAST AT
50 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
INDIANOLA...PELLA...KNOXVILLE...CHARITON...PLEASANTVILLE...
MELCHER-DALLAS...LAKE RED ROCK...KNOXVILLE RACEWAY...MILO...
HARTFORD...RUSSELL...LOVILIA...BUSSEY...LACONA...HARVEY...LUCAS...
WILLIAMSON...HAMILTON...DERBY AND MELROSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4090 9356 4147 9356 4151 9290 4150 9288
      4117 9287 4116 9286 4090 9286
TIME...MOT...LOC 0402Z 269DEG 44KT 4115 9321 

HAIL...1.00IN
WIND...60MPH

$$

BEERENDS

340 
WWUS53 KDMX 130409
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1109 PM CDT SAT APR 12 2014

IAC117-125-135-181-130430-
/O.CON.KDMX.SV.W.0049.000000T0000Z-140413T0430Z/
WARREN IA-MARION IA-LUCAS IA-MONROE IA-
1109 PM CDT SAT APR 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR EASTERN WARREN...MARION...LUCAS AND WESTERN MONROE COUNTIES...

AT 1109 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTHEAST
OF MELCHER-DALLAS...OR 11 MILES SOUTH OF KNOXVILLE...MOVING EAST AT
50 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. AT 11 PM CDT...60 MPH WINDS WERE 
REPORTED IN CHARITON.  

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
INDIANOLA...PELLA...KNOXVILLE...CHARITON...PLEASANTVILLE...
MELCHER-DALLAS...LAKE RED ROCK...KNOXVILLE RACEWAY...MILO...
HARTFORD...RUSSELL...LOVILIA...BUSSEY...LACONA...HARVEY...LUCAS...
WILLIAMSON...HAMILTON...DERBY AND MELROSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4090 9356 4147 9356 4151 9290 4150 9288
      4117 9287 4116 9286 4090 9286
TIME...MOT...LOC 0409Z 269DEG 44KT 4115 9310 

HAIL...1.00IN
WIND...60MPH

$$

BEERENDS

486 
WWUS53 KDMX 130421
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1121 PM CDT SAT APR 12 2014

IAC181-130431-
/O.CAN.KDMX.SV.W.0049.000000T0000Z-140413T0430Z/
WARREN IA-

1121 PM CDT SAT APR 12 2014

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WARREN COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT SUNDAY
MORNING FOR SOUTHERN IOWA.A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 500 AM CDT SUNDAY MORNING FOR  IOWA.

LAT...LON 4090 9346 4116 9334 4116 9333 4148 9332
      4151 9291 4150 9288 4117 9287 4116 9286
      4090 9286
TIME...MOT...LOC 0421Z 269DEG 44KT 4115 9290 

$$

IAC117-125-135-130430-
/O.CON.KDMX.SV.W.0049.000000T0000Z-140413T0430Z/
MARION IA-LUCAS IA-MONROE IA-
1121 PM CDT SAT APR 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR MARION...LUCAS AND WESTERN MONROE COUNTIES...

AT 1121 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES NORTHWEST
OF ALBIA...MOVING EAST AT 50 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
PELLA...KNOXVILLE...CHARITON...PLEASANTVILLE...MELCHER-DALLAS...LAKE
RED ROCK...KNOXVILLE RACEWAY...RUSSELL...LOVILIA...BUSSEY...HARVEY...
WILLIAMSON...HAMILTON...MELROSE...SWAN...MARYSVILLE...PELLA MUNICIPAL
AIRPORT...ELK ROCK STATE PARK...CHARITON MUNICIPAL AIRPORT AND RED
HAW LAKE STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4090 9346 4116 9334 4116 9333 4148 9332
      4151 9291 4150 9288 4117 9287 4116 9286
      4090 9286
TIME...MOT...LOC 0421Z 269DEG 44KT 4115 9290 

HAIL...1.00IN
WIND...60MPH

$$

BEERENDS

605 
WWUS53 KDMX 130431
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1131 PM CDT SAT APR 12 2014

IAC117-125-135-130440-
/O.EXP.KDMX.SV.W.0049.000000T0000Z-140413T0430Z/
MARION IA-LUCAS IA-MONROE IA-
1131 PM CDT SAT APR 12 2014

...THE SEVERE THUNDERSTORM WARNING FOR MARION...LUCAS AND WESTERN
MONROE COUNTIES HAS EXPIRED...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA. 
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. A SEVERE 
THUNDERSTORM WARNING REMAINS IN EFFECT FOR MARION AND MONROE 
COUNTIES UNTIL 1215 AM CDT. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT SUNDAY
MORNING FOR SOUTHERN IOWA.A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 500 AM CDT SUNDAY MORNING FOR  IOWA.


LAT...LON 4090 9346 4116 9334 4116 9333 4148 9332
      4151 9291 4150 9288 4117 9287 4116 9286
      4090 9286
TIME...MOT...LOC 0426Z 269DEG 44KT 4115 9290 

$$

BEERENDS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 7:18 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	42 min
Apr 12, 7:19 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Hardin, Story	26 min
Apr 12, 7:29 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Webster	46 min
Apr 12, 7:34 PM CDT	Severe Thunderstorm Warning	DMX	Cass	41 min
Apr 12, 7:39 PM CDT	Severe Thunderstorm Warning	DMX	Guthrie	51 min
Apr 12, 7:39 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Sac	36 min
Apr 12, 7:45 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Hardin, Story	45 min
Apr 12, 7:54 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	51 min
Apr 12, 7:57 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Hamilton, Hardin, Wright	33 min
Apr 12, 8:03 PM CDT	Severe Thunderstorm Warning	DMX	Boone	27 min
Apr 12, 8:15 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Sac	30 min
Apr 12, 8:17 PM CDT	Severe Thunderstorm Warning	DMX	Crawford, Sac	28 min
Apr 12, 8:20 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	40 min
Apr 12, 8:24 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Hardin, Marshall, Story	36 min
Apr 12, 8:30 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo, Franklin	30 min
Apr 12, 8:31 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Hamilton, Story	44 min
Apr 12, 8:34 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	41 min
Apr 12, 8:36 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Guthrie, Madison	39 min
Apr 12, 8:41 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Webster	49 min
Apr 12, 8:43 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Sac	32 min
Apr 12, 8:49 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer	41 min
Apr 12, 8:58 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin, Marshall, Tama	32 min
Apr 12, 9:07 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	38 min
Apr 12, 9:11 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin	34 min
Apr 12, 9:12 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams	33 min
Apr 12, 9:34 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Marshall, Tama	41 min
Apr 12, 9:43 PM CDT	Special Weather Statement	DMX	Hamilton	32 min
Apr 12, 9:44 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Madison, Union	46 min
Apr 12, 9:46 PM CDT	Special Weather Statement	DMX	Polk	29 min
Apr 12, 9:49 PM CDT	Special Weather Statement	DMX	Madison	26 min
Apr 12, 9:54 PM CDT	Special Weather Statement	DMX	Carroll	36 min
Apr 12, 10:06 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Hardin	24 min
Apr 12, 10:07 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Union, Warren	38 min
Apr 12, 10:09 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Bremer, Tama	36 min
Apr 12, 10:15 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Ringgold	45 min
Apr 12, 10:20 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Tama	25 min
Apr 12, 10:26 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Union, Warren	34 min
Apr 12, 10:31 PM CDT	Special Weather Statement	DMX	Polk	29 min
Apr 12, 10:33 PM CDT	Special Weather Statement	DMX	Humboldt	27 min
Apr 12, 10:44 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Poweshiek, Tama	31 min
Apr 12, 10:54 PM CDT	Severe Thunderstorm Warning	DMX	Wayne	36 min
Apr 12, 11:11 PM CDT	Severe Thunderstorm Warning	DMX	Poweshiek, Tama	34 min
Apr 12, 11:20 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Davis, Jasper, Mahaska, Marion, Monroe and 2 more	55 min
Apr 13, 12:32 AM CDT	Special Weather Statement	DMX	Carroll	28 min
Apr 13, 1:15 AM CDT	Special Weather Statement	DMX	Webster	30 min
Apr 13, 2:52 AM CDT	Severe Thunderstorm Warning	DMX	Adair, Cass, Guthrie	38 min
Apr 13, 3:37 PM CDT	Flood Watch	DMX	Appanoose, Black Hawk, Davis, Decatur, Grundy, Jasper and 9 more	6 hr
Apr 13, 3:44 PM CDT	Wind Advisory	DMX	Adair, Adams, Audubon, Boone, Calhoun, Carroll and 28 more	8 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2014 Every severe thunderstorm warning in 2014

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.