Alert archive / Iowa / Tornado Warnings in 2008

Tornado Warning 16, NWS Des Moines, IA

May 25, 2008Butler County, Iowa

NWS Des Moines, IA issued this tornado warning at May 25, 2008, 5:27 PM CDT for Butler County, Iowa. It was in force for 14 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: May 25, 2008, 5:27 PM CDT (22:27 UTC)
Expired: May 25, 2008, 5:41 PM CDT
In force: 14 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon

County Butler County, IA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 25, 3:30 PM CDT	Tornado Watch PDS	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.5 hours before the alert went out and 214 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 229 m²/s²
0-3 km storm-relative helicity: 297 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.

000 
WFUS53 KDMX 252227
TORDMX
IAC023-252300-
/O.NEW.KDMX.TO.W.0016.080525T2227Z-080525T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
527 PM CDT SUN MAY 25 2008

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL BUTLER COUNTY IN NORTH CENTRAL IOWA...

* UNTIL 600 PM CDT.

* AT 522 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES WEST OF
  SHELL ROCK...OR 22 MILES NORTHWEST OF WATERLOO...MOVING NORTHEAST
  AT 22 MPH.

* THE TORNADO WILL BE NEAR...
  SHELL ROCK BY 540 PM CDT...

THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT...OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR...SEEK SHELTER IN A REINFORCED BUILDING.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR IOWA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM CDT
SUNDAY EVENING FOR NORTHWESTERN IOWA.

LAT...LON 4278 9256 4262 9256 4260 9275 4276 9276
TIME...MOT...LOC 2227Z 247DEG 19KT 4269 9268

$$

VACHALEK

1 follow-up statement

000 
WWUS53 KDMX 252241
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
540 PM CDT SUN MAY 25 2008

IAC023-252250-
/O.CAN.KDMX.TO.W.0016.000000T0000Z-080525T2300Z/
BUTLER IA-
540 PM CDT SUN MAY 25 2008

...THE TORNADO WARNING FOR EAST CENTRAL BUTLER COUNTY IS CANCELLED...

AT 535 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE EITHER WEAKENED OR
MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO
LIFE OR PROPERTY. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.

IF YOU HAVE REPORTS OF SEVERE WEATHER...CALL THEM IN TO LOCAL LAW 
ENFORCEMENT.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR IOWA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM CDT
SUNDAY EVENING FOR NORTHWESTERN IOWA.

LAT...LON 4278 9256 4262 9256 4260 9275 4276 9276
TIME...MOT...LOC 2240Z 247DEG 19KT 4272 9259

$$

SEARCY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 3:38 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Wright	52 min
May 25, 4:03 PM CDT	Tornado Warning	DMX	Cerro Gordo, Franklin	42 min
May 25, 4:16 PM CDT	Severe Thunderstorm Warning	DMX	Franklin	28 min
May 25, 4:17 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin, Grundy, Hardin	43 min
May 25, 4:22 PM CDT	Tornado Warning	DMX	Butler, Franklin, Grundy, Hardin	23 min
May 25, 4:46 PM CDT	Tornado Warning	DMX	Butler, Grundy	44 min
May 25, 5:04 PM CDT	Tornado Warning	DMX	Black Hawk, Bremer	56 min
May 25, 5:21 PM CDT	Tornado Warning	DMX	Black Hawk, Bremer	24 min
May 25, 5:37 PM CDT	Tornado Warning	DMX	Black Hawk	38 min
May 25, 5:47 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Lucas	43 min
May 25, 5:49 PM CDT	Severe Thunderstorm Warning	DMX	Bremer	26 min
May 25, 6:12 PM CDT	Tornado Warning	DMX	Clarke, Lucas	48 min
May 25, 6:54 PM CDT	Tornado Warning	DMX	Lucas	36 min

Nearby

Tornado Warnings in Iowa, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.