Alert archive / Iowa / Tornado Warnings in 2014

Tornado Warning 21, NWS Des Moines, IA

June 3, 2014Decatur County, Wayne County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 3, 2014, 10:10 PM CDT for Decatur County, Wayne County, Iowa. It was in force for 35 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: Jun 3, 2014, 10:10 PM CDT (03:10 UTC)
Expired: Jun 3, 2014, 10:45 PM CDT
In force: 35 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Decatur County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 124 km from the middle of the area, began a volume at 03:12 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.

Issued	Product	Office	Lasted
Jun 3, 1:12 PM CDT	Tornado Watch	SPC	10 hr
Jun 3, 5:59 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 3.2 hours before the alert went out and 255 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: 1643 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1425 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 321 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 10.0

Open this sounding in Storm Lab

The text

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

736 
WFUS53 KDMX 040310
TORDMX
IAC053-185-040345-
/O.NEW.KDMX.TO.W.0021.140604T0310Z-140604T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1010 PM CDT TUE JUN 3 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN WAYNE COUNTY IN SOUTH CENTRAL IOWA...
  SOUTHEASTERN DECATUR COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 1045 PM CDT
    
* AT 1009 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 8 MILES NORTHWEST OF MERCER...OR 11 MILES
  SOUTHEAST OF LEON...MOVING EAST AT 40 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* LOCATIONS IMPACTED INCLUDE...
  ALLERTON...LINEVILLE AND CLIO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4058 9367 4064 9370 4074 9335 4059 9332
TIME...MOT...LOC 0309Z 255DEG 37KT 4062 9361 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SKOW

2 follow-up statements

886 
WWUS53 KDMX 040325
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1025 PM CDT TUE JUN 3 2014

IAC053-040335-
/O.CAN.KDMX.TO.W.0021.000000T0000Z-140604T0345Z/
DECATUR IA-

1025 PM CDT TUE JUN 3 2014

...THE TORNADO WARNING FOR SOUTHEASTERN DECATUR COUNTY IS
CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA THEREFORE THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT WEDNESDAY MORNING
FOR SOUTHERN IOWA.

LAT...LON 4058 9355 4067 9355 4074 9335 4059 9332
TIME...MOT...LOC 0325Z 255DEG 37KT 4066 9340 

$$

IAC185-040345-
/O.CON.KDMX.TO.W.0021.000000T0000Z-140604T0345Z/
WAYNE IA-
1025 PM CDT TUE JUN 3 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
SOUTHWESTERN WAYNE COUNTY...
    
AT 1025 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 7 MILES SOUTHWEST OF CORYDON...MOVING EAST AT 45 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

LOCATIONS IMPACTED INCLUDE...
ALLERTON...LINEVILLE AND CLIO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A
VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4058 9355 4067 9355 4074 9335 4059 9332
TIME...MOT...LOC 0325Z 255DEG 37KT 4066 9340 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

SKOW

182 
WWUS53 KDMX 040336
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1036 PM CDT TUE JUN 3 2014

IAC185-040346-
/O.EXP.KDMX.TO.W.0021.000000T0000Z-140604T0345Z/
WAYNE IA-
1036 PM CDT TUE JUN 3 2014

...THE TORNADO WARNING FOR SOUTHWESTERN WAYNE COUNTY WILL EXPIRE AT
1045 PM CDT...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...LARGE HAIL AND DAMAGING WINDS REMAIN LIKELY
AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT WEDNESDAY MORNING
FOR SOUTHERN IOWA.

LAT...LON 4058 9355 4067 9355 4074 9335 4059 9332
TIME...MOT...LOC 0335Z 255DEG 37KT 4066 9340 

$$

SKOW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 7:01 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur	59 min
Jun 3, 7:14 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold	16 min
Jun 3, 7:21 PM CDT	Tornado Warning	DMX	Decatur	24 min
Jun 3, 7:30 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass, Taylor	60 min
Jun 3, 7:43 PM CDT	Severe Thunderstorm Warning	DMX	Appanoose, Wayne	47 min
Jun 3, 7:45 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Lucas, Wayne	45 min
Jun 3, 7:52 PM CDT	Flash Flood Warning	DMX	Decatur, Wayne	6 hr
Jun 3, 8:08 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Ringgold, Taylor, Union	67 min
Jun 3, 8:30 PM CDT	Tornado Warning	DMX	Adams, Ringgold, Taylor, Union	30 min
Jun 3, 8:51 PM CDT	Tornado Warning	DMX	Ringgold, Union	24 min
Jun 3, 9:06 PM CDT	Severe Thunderstorm Warning	DMX	Taylor	54 min
Jun 3, 9:21 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold	24 min
Jun 3, 9:51 PM CDT	Severe Thunderstorm Warning	DMX	Ringgold, Taylor	54 min
Jun 3, 9:57 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Wayne	48 min

Nearby

Tornado Warnings in Iowa, 2014 Every tornado warning in 2014 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.