Alert archive / Iowa / Tornado Warnings in 2014

Tornado Warning 15, NWS Des Moines, IA

June 1, 2014Worth County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 1, 2014, 1:49 PM CDT for Worth County, Iowa. It was in force for 26 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 1, 2014, 1:49 PM CDT (18:49 UTC)
Expired: Jun 1, 2014, 2:15 PM CDT
In force: 26 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Worth County, IA

The radar

The Minneapolis radar (KMPX), 162 km from the middle of the area, began a volume at 18:53 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 6.8 hours before the alert went out and 163 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: 327 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 90 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

221 
WFUS53 KDMX 011849
TORDMX
IAC195-011915-
/O.NEW.KDMX.TO.W.0015.140601T1849Z-140601T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
149 PM CDT SUN JUN 1 2014

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN WORTH COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 215 PM CDT
    
* AT 149 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR NORTHWOOD...MOVING EAST AT 25 MPH.

  HAZARD...TORNADO. 

  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...
  NORTHWOOD...KENSETT...BOLAN AND NORTHWOOD MUNICIPAL. 

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 209 AND 218.
 
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 4337 9302 4335 9338 4350 9338 4350 9303
TIME...MOT...LOC 1849Z 250DEG 22KT 4342 9327 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

SMALL

1 follow-up statement

899 
WWUS53 KDMX 011913
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
213 PM CDT SUN JUN 1 2014

IAC195-011921-
/O.EXP.KDMX.TO.W.0015.000000T0000Z-140601T1915Z/
WORTH IA-
213 PM CDT SUN JUN 1 2014

...THE TORNADO WARNING FOR NORTHEASTERN WORTH COUNTY WILL EXPIRE AT
215 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4337 9302 4335 9338 4350 9338 4350 9303
TIME...MOT...LOC 1910Z 250DEG 22KT 4342 9327 

$$

REV

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 12:45 PM CDT	Special Weather Statement	DMX	Bremer, Butler, Cerro Gordo, Emmet, Franklin, Hancock and 7 more	2 hr
Jun 1, 12:51 PM CDT	Tornado Warning	DMX	Winnebago	24 min
Jun 1, 1:31 PM CDT	Tornado Warning Tornado observed	DMX	Hancock, Kossuth, Winnebago	29 min
Jun 1, 2:31 PM CDT	Tornado Warning Tornado observed	DMX	Cerro Gordo, Worth	29 min
Jun 1, 2:46 PM CDT	Flash Flood Warning	DMX	Kossuth, Palo Alto	6 hr
Jun 1, 2:57 PM CDT	Flash Flood Watch	DMX	Cerro Gordo, Emmet, Hancock, Kossuth, Palo Alto, Pocahontas and 2 more	8 hr
Jun 1, 5:13 PM CDT	Severe Thunderstorm Warning	DMX	Sac	47 min
Jun 1, 5:49 PM CDT	Special Weather Statement	DMX	Audubon, Cass	56 min
Jun 1, 6:04 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun	41 min
Jun 1, 6:25 PM CDT	Special Weather Statement	DMX	Adair, Cass, Greene, Guthrie	35 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.