Alert archive / Iowa / Tornado Warnings in 2006

Tornado Warning 5, NWS Des Moines, IA

March 30, 2006Decatur County, Iowa

NWS Des Moines, IA issued this tornado warning at Mar 30, 2006, 8:23 PM CST for Decatur County, Iowa. It was in force for 37 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: Mar 30, 2006, 8:23 PM CST (02:23 UTC)
Expired: Mar 30, 2006, 9:00 PM CST
In force: 37 min
Issued by: NWS Des Moines, IA
Area: Counties, with a storm outline in the text

County Decatur County, IA

The radar

The Des Moines radar (KDMX), 110 km from the middle of the area, began a volume at 02:25 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
Mar 30, 2:15 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.4 hours before the alert went out and 224 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: 992 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 120 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 310224
TORDMX
IAC053-310300-
/O.NEW.KDMX.TO.W.0005.060331T0223Z-060331T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
823 PM CST THU MAR 30 2006

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  DECATUR COUNTY IN SOUTH CENTRAL IOWA.

* UNTIL 900 PM CST.

* AT 821 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED NEAR LAMONI...OR 24 MILES NORTH OF BETHANY...AND
  MOVING NORTHEAST AT 45 MPH.

* THIS STORM WILL BE...
  5 MILES NORTHWEST OF DAVIS CITY BY 830 PM CST.
  NEAR DECATUR CITY BY 835 PM CST.
  NEAR LEON BY 840 PM CST.
  NEAR GARDEN GROVE BY 850 PM CST.
  NEAR LE ROY BY 855 PM CST.

THE LOCATIONS OF LAMONI AIRPORT AND WELDON ARE ALSO IN THE PATH.

AT 810 PM...A SPOTTER REPORTED A TORNADO NEAR HATFIELD IN HARRISON 
COUNTY MISSOURI.

IN ADDITION TO THE TORNADO...THIS STORM IS ALSO EXPECTED TO PRODUCE 
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

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.

LAT...LON 4059 9401 4059 9381 4075 9356 4089 9357
      4090 9374 4090 9401

$$

KINNEY

2 follow-up statements

000 
WWUS53 KDMX 310241
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
840 PM CST THU MAR 30 2006

IAC053-310300-
/O.CON.KDMX.TO.W.0005.000000T0000Z-060331T0300Z/
DECATUR IA-
840 PM CST THU MAR 30 2006

...A TORNADO WARNING REMAINS IN EFFECT FOR DECATUR COUNTY UNTIL 900
PM CST...

AT 837 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR LEON...OR 34 MILES NORTH OF BETHANY...AND
MOVING NORTHEAST AT 45 MPH.

THIS TORNADIC STORM WILL BE...
  NEAR DECATUR CITY NOW.
  NEAR VAN WERT BY 845 PM CST.
  NEAR WELDON BY 850 PM CST.
  NEAR LE ROY BY 855 PM CST.

THE LOCATIONS OF GARDEN GROVE ARE ALSO IN THE PATH OF THIS TORNADO.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
PENNY SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS OF 60 MPH.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST THURSDAY EVENING
FOR SOUTHWESTERN IOWA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CST
FRIDAY MORNING FOR EASTERN IOWA.

LAT...LON 4059 9401 4059 9381 4075 9356 4089 9357
      4090 9374 4090 9401

$$

KINNEY

000 
WWUS53 KDMX 310303 RRA
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
902 PM CST THU MAR 30 2006

IAC053-310312-
/O.EXP.KDMX.TO.W.0005.000000T0000Z-060331T0300Z/
DECATUR IA-
902 PM CST THU MAR 30 2006

...THE TORNADO WARNING FOR DECATUR COUNTY HAS BEEN ALLOWED TO
EXPIRE...

AT 859 PM CST...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.

AT 855 PM...FIRE AND RESCUE PERSONNEL REPORTED 1.25 INCH HAIL IN 
WELDON.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CST THURSDAY EVENING
FOR SOUTHWESTERN IOWA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CST
FRIDAY MORNING FOR EASTERN IOWA.

LAT...LON 4059 9401 4059 9381 4075 9356 4089 9357
      4090 9374 4090 9401

$$

KINNEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 6:00 PM CST	Tornado Warning	DMX	Union	30 min
Mar 30, 6:08 PM CST	Severe Thunderstorm Warning	DMX	Boone	52 min
Mar 30, 6:13 PM CST	Severe Thunderstorm Warning	DMX	Dallas, Polk	47 min
Mar 30, 6:17 PM CST	Severe Thunderstorm Warning	DMX	Clarke	43 min
Mar 30, 6:19 PM CST	Severe Thunderstorm Warning	DMX	Hancock	41 min
Mar 30, 6:24 PM CST	Severe Thunderstorm Warning	DMX	Story	36 min
Mar 30, 6:27 PM CST	Severe Thunderstorm Warning	DMX	Hamilton	33 min
Mar 30, 6:41 PM CST	Severe Thunderstorm Warning	DMX	Hardin	34 min
Mar 30, 6:44 PM CST	Severe Thunderstorm Warning	DMX	Wright	46 min
Mar 30, 6:47 PM CST	Severe Thunderstorm Warning	DMX	Marshall	43 min
Mar 30, 6:50 PM CST	Severe Thunderstorm Warning	DMX	Jasper	40 min
Mar 30, 6:52 PM CST	Severe Thunderstorm Warning	DMX	Franklin	53 min
Mar 30, 6:55 PM CST	Severe Thunderstorm Warning	DMX	Cerro Gordo	50 min
Mar 30, 7:01 PM CST	Severe Thunderstorm Warning	DMX	Hancock	29 min
Mar 30, 7:03 PM CST	Severe Thunderstorm Warning	DMX	Warren	27 min
Mar 30, 7:07 PM CST	Severe Thunderstorm Warning	DMX	Butler, Grundy	53 min
Mar 30, 7:29 PM CST	Severe Thunderstorm Warning	DMX	Worth	36 min
Mar 30, 8:02 PM CST	Tornado Warning	DMX	Ringgold	28 min
Mar 30, 8:50 PM CST	Tornado Warning	DMX	Clarke	25 min
Mar 30, 8:50 PM CST	Tornado Warning	DMX	Clarke	25 min
Mar 30, 9:05 PM CST	Tornado Warning	DMX	Lucas	25 min
Mar 31, 7:33 AM CST	Wind Advisory	DMX	Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun and 32 more	10 hr

Nearby

Tornado Warnings in Iowa, 2006 Every tornado warning in 2006 Tornadoes in 2006

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.