Alert archive / Iowa / Tornado Warnings in 2014

Tornado Warning 5, NWS La Crosse, WI

June 16, 2014Mitchell County, Iowa

NWS La Crosse, WI issued this tornado warning at Jun 16, 2014, 7:07 PM CDT for Mitchell County, Iowa. It was in force for 23 min. 2 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: Jun 16, 2014, 7:07 PM CDT (00:07 UTC)
Expired: Jun 16, 2014, 7:30 PM CDT
In force: 23 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Observed
Hail: 1.25 in

County Mitchell County, IA

The radar

The La Crosse radar (KARX), 146 km from the middle of the area, began a volume at 00:08 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
Jun 16, 7:09 PM CDT	TSTM WND DMG	5 Nw Rock Creek, IA	GRAIN BIN DESTROYED
Jun 16, 7:23 PM CDT	TSTM WND DMG	Osage, IA	SEVERAL LARGE TREE BRANCHES DOWN BLOCKING STREETS

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
Jun 16, 5:46 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.1 hours before the alert went out and 181 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: 25 J/kg
Mixed-layer CIN: -136 J/kg
Mixed-layer LCL: 2158 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 81 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.

406 
WFUS53 KARX 170007
TORARX
IAC131-170030-
/O.NEW.KARX.TO.W.0005.140617T0007Z-140617T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
707 PM CDT MON JUN 16 2014

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN MITCHELL COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 730 PM CDT

* AT 706 PM CDT...A RADAR CONFIRMED TORNADO WAS LOCATED 7 MILES EAST 
  OF MANLY...OR 11 MILES NORTHEAST OF MASON CITY...MOVING EAST AT 50 
  MPH.

  HAZARD...DAMAGING TORNADO AND HALF DOLLAR SIZE HAIL. 

  SOURCE...WEATHER SPOTTERS CONFIRMED TORNADO. 

  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. 

* THE TORNADO WILL BE NEAR...
  OSAGE AROUND 720 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
MITCHELL...OSAGE SPRING PARK...HIGHWAY 218 AND COUNTY T 40...ROCK
CREEK AND STATE ROAD 9 AND COUNTY S 70.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 4334 9302 4339 9278 4339 9275 4327 9271
      4326 9271 4321 9302
TIME...MOT...LOC 0006Z 253DEG 45KT 4327 9305 

TORNADO...OBSERVED
HAIL...1.25IN

$$

ZT

2 follow-up statements

326 
WWUS53 KARX 170021
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
721 PM CDT MON JUN 16 2014

IAC131-170030-
/O.CON.KARX.TO.W.0005.000000T0000Z-140617T0030Z/
MITCHELL IA-
721 PM CDT MON JUN 16 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR
SOUTHWESTERN MITCHELL COUNTY...
    
AT 720 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR OSAGE...MOVING EAST AT 50 MPH.

HAZARD...TORNADO...HALF DOLLAR SIZE HAIL AND DAMAGING WINDS TO 70 
         MPH. 

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. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHWESTERN MITCHELL COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
MITCHELL...OSAGE SPRING PARK...ROCK CREEK...HIGHWAY 218 AND COUNTY T
40 AND HIGHWAYS 9 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 4339 9278 4339 9275 4327 9271 4326 9271
      4322 9297 4335 9299
TIME...MOT...LOC 0020Z 250DEG 43KT 4333 9286 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

AJ

787 
WWUS53 KARX 170030
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
730 PM CDT MON JUN 16 2014

IAC131-170039-
/O.EXP.KARX.TO.W.0005.000000T0000Z-140617T0030Z/
MITCHELL IA-
730 PM CDT MON JUN 16 2014

...THE TORNADO WARNING FOR SOUTHWESTERN MITCHELL COUNTY WILL EXPIRE
AT 730 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR 
EASTERN MITCHELL COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT TUESDAY MORNING 
FOR SOUTHEASTERN MINNESOTA...SOUTHWEST WISCONSIN AND NORTHEAST IOWA.

LAT...LON 4339 9278 4339 9275 4327 9271 4326 9271
      4322 9297 4335 9299
TIME...MOT...LOC 0027Z 253DEG 45KT 4333 9286 

$$

AJ

The office that day

Everything else NWS La Crosse, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 7:24 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Floyd, Howard, Mitchell	66 min
Jun 16, 7:58 PM CDT	Severe Thunderstorm Warning	ARX	Allamakee, Winneshiek	77 min
Jun 16, 8:18 PM CDT	Severe Thunderstorm Warning	ARX	Chickasaw, Fayette	57 min
Jun 16, 8:46 PM CDT	Severe Thunderstorm Warning	ARX	Clayton	59 min
Jun 16, 9:01 PM CDT	Tornado Warning	ARX	Clayton, Fayette	29 min
Jun 16, 9:38 PM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	52 min
Jun 17, 9:59 AM CDT	River Flood Warning	ARX	Floyd	5 days
Jun 17, 11:02 AM CDT	Areal Flood Warning	ARX	Mitchell	57 hr
Jun 17, 2:44 PM CDT	Flash Flood Watch	ARX	Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more	54 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.