Alert archive / Iowa / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 9, NWS La Crosse, WI

May 26, 2016Mitchell County, Iowa

NWS La Crosse, WI issued this severe thunderstorm warning at May 26, 2016, 2:51 AM CDT for Mitchell County, Iowa. It was in force for 54 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: May 26, 2016, 2:51 AM CDT (07:51 UTC)
Expired: May 26, 2016, 3:45 AM CDT
In force: 54 min
Issued by: NWS La Crosse, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Mitchell County, IA

The radar

The La Crosse radar (KARX), 142 km from the middle of the area, began a volume at 07:53 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.

What was reported inside it

Time	Report	Where	Remark
May 26, 3:07 AM CDT	TSTM WND DMG	Osage, IA	POWER LINES DOWN IN OSAGE.
May 26, 3:14 AM CDT	TSTM WND DMG	Osage, IA	SMALL BRANCHES DOWN IN OSAGE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.9 hours before the alert went out and 176 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: 755 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1033 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted.

069 
WUUS53 KARX 260751
SVRARX
IAC131-260845-
/O.NEW.KARX.SV.W.0009.160526T0751Z-160526T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LA CROSSE WI
251 AM CDT THU MAY 26 2016

THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MITCHELL COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 345 AM CDT

* AT 250 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MANLY...OR 11
  MILES SOUTHEAST OF NORTHWOOD...MOVING NORTHEAST AT 30 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. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  ST. ANSGAR AROUND 310 AM CDT. 
  OSAGE AND LYLE AROUND 315 AM CDT. 
  STACYVILLE AROUND 325 AM CDT. 
  RICEVILLE AROUND 340 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
MITCHELL...MCINTIRE...CARPENTER...ORCHARD AND BROWNVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9302 4350 9255 4326 9256 4321 9288
      4321 9302
TIME...MOT...LOC 0750Z 246DEG 27KT 4331 9308 

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

DAB

3 follow-up statements

849 
WWUS53 KARX 260813
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
313 AM CDT THU MAY 26 2016

IAC131-260845-
/O.CON.KARX.SV.W.0009.000000T0000Z-160526T0845Z/
MITCHELL IA-
313 AM CDT THU MAY 26 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR MITCHELL COUNTY...

AT 312 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ST. ANSGAR...OR
NEAR OSAGE...MOVING NORTHEAST AT 40 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...A TRAINED WETHER SPOTTER MEASURED QUARTER SIZED HAIL IN
         GRAFTON...IN WORTH COUNTY...WITH THIS STORM. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  STACYVILLE AROUND 325 AM CDT. 
  RICEVILLE AROUND 335 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
MITCHELL...MCINTIRE...CARPENTER...ORCHARD AND BROWNVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9302 4350 9255 4326 9256 4321 9288
      4321 9302
TIME...MOT...LOC 0812Z 230DEG 33KT 4336 9288 

HAIL...1.00IN
WIND...<50MPH
 
$$

DAB

665 
WWUS53 KARX 260831
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
331 AM CDT THU MAY 26 2016

IAC131-260845-
/O.CON.KARX.SV.W.0009.000000T0000Z-160526T0845Z/
MITCHELL IA-
331 AM CDT THU MAY 26 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 AM CDT
FOR NORTHEASTERN MITCHELL COUNTY...

AT 330 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LE ROY...OR 18
MILES NORTHEAST OF OSAGE...MOVING NORTHEAST AT 50 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. SOME MINOR TREE DAMAGE AND HAIL TO
         QUARTERS HAS BEEN REPORTED WITH THIS STORM. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN MITCHELL COUNTY...INCLUDING THE FOLLOWING LOCATIONS:
MCINTIRE...BAILEY...BROWNVILLE...COUNTY ROADS T 54 AND A 31 AND PIONEER
STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4350 9279 4350 9255 4332 9256 4332 9272
      4338 9274
TIME...MOT...LOC 0830Z 247DEG 44KT 4346 9253 

HAIL...<.75IN
WIND...60MPH
 
$$

DAB

251 
WWUS53 KARX 260844
SVSARX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
344 AM CDT THU MAY 26 2016

IAC131-260854-
/O.EXP.KARX.SV.W.0009.000000T0000Z-160526T0845Z/
MITCHELL IA-
344 AM CDT THU MAY 26 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MITCHELL COUNTY
WILL EXPIRE AT 345 AM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4350 9279 4350 9255 4332 9256 4332 9272
      4338 9274
TIME...MOT...LOC 0841Z 246DEG 27KT 4346 9253 

$$

DAB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 2:35 AM CDT	Special Weather Statement	ARX	Mitchell	55 min
May 26, 3:52 AM CDT	Special Weather Statement	ARX	Howard	53 min
May 26, 4:40 AM CDT	Special Weather Statement	ARX	Allamakee, Clayton, Fayette, Winneshiek	65 min
May 26, 4:52 AM CDT	Severe Thunderstorm Warning	ARX	Clayton, Fayette	53 min
May 26, 5:28 AM CDT	Severe Thunderstorm Warning	ARX	Allamakee	47 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2016 Every severe thunderstorm warning in 2016

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.