Alert archive / Iowa / Tornado Warnings in 2014

Tornado Warning 7, NWS La Crosse, WI

June 16, 2014Clayton County, Fayette County, Iowa

NWS La Crosse, WI issued this tornado warning at Jun 16, 2014, 9:01 PM CDT for Clayton County, Fayette County, Iowa. It was in force for 29 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 16, 2014, 9:01 PM CDT (02:01 UTC)
Expired: Jun 16, 2014, 9:30 PM CDT
In force: 29 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Clayton County, IA, Fayette County, IA

The radar

The La Crosse radar (KARX), 109 km from the middle of the area, began a volume at 02:01 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 16, 5:46 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 2.0 hours before the alert went out and 162 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: 2074 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1135 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 122 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

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

165 
WFUS53 KARX 170201
TORARX
IAC043-065-170230-
/O.NEW.KARX.TO.W.0007.140617T0201Z-140617T0230Z/

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

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL FAYETTE COUNTY IN NORTHEAST IOWA...
  NORTHWESTERN CLAYTON COUNTY IN NORTHEAST IOWA...

* UNTIL 930 PM CDT
    
* AT 900 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR ELGIN...OR 10 MILES WEST OF ELKADER...
  MOVING EAST AT 50 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. 

* THIS DANGEROUS STORM WILL BE NEAR...
  ELKADER AROUND 910 PM CDT.
  FARMERSBURG AROUND 915 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
WADENA...ST. OLAF...HIGHLAND...HIGHWAY 56 AND COUNTY W 70 AND CLAYTON
CENTER.

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.

THIS CLUSTER OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A BUILDING.

&&

LAT...LON 4280 9167 4291 9171 4300 9130 4284 9124
TIME...MOT...LOC 0200Z 258DEG 45KT 4288 9160 

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

$$

ZT

2 follow-up statements

626 
WWUS53 KARX 170218
SVSARX

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

IAC065-170227-
/O.CAN.KARX.TO.W.0007.000000T0000Z-140617T0230Z/
FAYETTE IA-

918 PM CDT MON JUN 16 2014

...THE TORNADO WARNING FOR EAST CENTRAL FAYETTE 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 TUESDAY MORNING
FOR SOUTHEASTERN MINNESOTA...SOUTHWEST WISCONSIN AND NORTHEAST IOWA.

LAT...LON 4281 9157 4294 9158 4300 9130 4284 9124
TIME...MOT...LOC 0217Z 258DEG 44KT 4291 9133 

$$

IAC043-170230-
/O.CON.KARX.TO.W.0007.000000T0000Z-140617T0230Z/
CLAYTON IA-
918 PM CDT MON JUN 16 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM CDT FOR
NORTHWESTERN CLAYTON COUNTY...
    
AT 917 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR FARMERSBURG...OR NEAR ELKADER...MOVING EAST AT 50
MPH.

HAZARD...TORNADO AND DAMAGING WIND GUSTS 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
NORTHWESTERN CLAYTON COUNTY...INCLUDING THE FOLLOWING LOCATIONS...ST.
OLAF...HIGHWAY 56 AND COUNTY W 70 AND CLAYTON CENTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS CLUSTER OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND 
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE 
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST 
FLOOR OF A BUILDING.

&&

LAT...LON 4281 9157 4294 9158 4300 9130 4284 9124
TIME...MOT...LOC 0217Z 258DEG 44KT 4291 9133 

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

$$

AJ

000 
WWUS53 KARX 170230
SVSARX

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

IAC043-170240-
/O.EXP.KARX.TO.W.0007.000000T0000Z-140617T0230Z/
CLAYTON IA-
930 PM CDT MON JUN 16 2014

...THE TORNADO WARNING FOR NORTHWESTERN CLAYTON COUNTY HAS EXPIRED...
    
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.
HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

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

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
LA CROSSE.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
CLAYTON COUNTY UNTIL 945 PM.

LAT...LON 4281 9157 4294 9158 4300 9130 4284 9124
TIME...MOT...LOC 0229Z 258DEG 45KT 4291 9133 

$$

HALBACH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:07 PM CDT	Tornado Warning Tornado observed	ARX	Mitchell	23 min
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, 9:38 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.