Alert archive / Iowa / Tornado Warnings in 2006

Tornado Warning 21, NWS Des Moines, IA

April 15, 2006Carroll County, Iowa

NWS Des Moines, IA issued this tornado warning at Apr 15, 2006, 9:06 PM CDT for Carroll County, Iowa. It was in force for 22 min. 1 report 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
Apr 15, 2006, 9:06 PM CDT (02:06 UTC)
Expired
Apr 15, 2006, 9:28 PM CDT
In force
22 min
Issued by
NWS Des Moines, IA
Area
Counties, with a storm outline in the text

County Carroll County, IA

The radar

The Des Moines radar (KDMX), 102 km from the middle of the area, began a volume at 02:08 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

TimeReportWhereRemark
Apr 15, 9:15 PM CDTHAIL 14 Wnw Carroll Airport, IA

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.

IssuedProductOfficeLasted
Apr 15, 5:28 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.1 hours before the alert went out and 144 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2006-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1197 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2006-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
1197 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1119 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
36 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 160207
TORDMX
IAC027-160300-
/O.NEW.KDMX.TO.W.0021.060416T0206Z-060416T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
906 PM CDT SAT APR 15 2006

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  CARROLL COUNTY IN WEST CENTRAL IOWA.

* UNTIL 1000 PM CDT.

* AT 904 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 10 MILES EAST OF MANNING...OR 44 MILES SOUTHEAST
  OF IDA GROVE...AND MOVING NORTH AT 35 MPH.

* THIS STORM WILL BE...
  NEAR WILLEY BY 915 PM CDT.
  NEAR CARROLL AIRPORT BY 925 PM CDT.
  NEAR LIDDERDALE BY 935 PM CDT.
  NEAR LANESBORO BY 940 PM CDT.

THE LOCATIONS OF TEMPLETON AND DEDHAM ARE ALSO IN THE PATH.

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA. GO TO A BASEMENT OR SMALL INTERIOR
ROOM ON THE LOWEST FLOOR

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 4186 9509 4186 9464 4220 9464 4221 9504

$$

VACHALEK
2 follow-up statements
000 
WWUS53 KDMX 160220
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
919 PM CDT SAT APR 15 2006

IAC027-160300-
/O.CON.KDMX.TO.W.0021.000000T0000Z-060416T0300Z/
CARROLL IA-
919 PM CDT SAT APR 15 2006

...A TORNADO WARNING REMAINS IN EFFECT FOR CARROLL COUNTY UNTIL 1000
PM CDT...

AT 917 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR CARROLL...OR 39 MILES SOUTHEAST OF IDA
GROVE...AND MOVING NORTHEAST AT 45 MPH.

THIS TORNADIC STORM WILL BE...
  NEAR LANESBORO BY 930 PM CDT.

THE LOCATIONS OF CARROLL AIRPORT AND LIDDERDALE ARE ALSO IN THE PATH
OF THIS TORNADO.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

IF SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SUNDAY MORNING
FOR SOUTHWESTERN IOWA.

LAT...LON 4186 9509 4186 9464 4220 9464 4221 9504

$$

VACHALEK
000 
WWUS53 KDMX 160228
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
928 PM CDT SAT APR 15 2006

IAC027-160238-
/O.CAN.KDMX.TO.W.0021.000000T0000Z-060416T0300Z/
CARROLL IA-
928 PM CDT SAT APR 15 2006

...THE TORNADO WARNING FOR CARROLL COUNTY HAS BEEN CANCELLED...

AT 925 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 SEVERE WEATHER WAS OBSERVED...CONTACT THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES AT 1-800-759-9276.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SUNDAY MORNING
FOR SOUTHWESTERN IOWA.

LAT...LON 4186 9509 4186 9464 4220 9464 4221 9504

$$

VACHALEK

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:13 PM CDTSevere Thunderstorm WarningDMXAudubon47 min
Apr 15, 7:19 PM CDTSevere Thunderstorm WarningDMXCass41 min
Apr 15, 7:25 PM CDTSevere Thunderstorm WarningDMXCrawford50 min
Apr 15, 7:25 PM CDTSevere Thunderstorm WarningDMXAdams35 min
Apr 15, 8:01 PM CDTSevere Thunderstorm WarningDMXCass44 min
Apr 15, 8:07 PM CDTTornado WarningDMXAudubon23 min
Apr 15, 8:14 PM CDTSevere Thunderstorm WarningDMXCrawford21 min
Apr 15, 8:30 PM CDTSevere Thunderstorm WarningDMXAudubon45 min
Apr 15, 8:44 PM CDTSevere Thunderstorm WarningDMXCass21 min
Apr 15, 8:53 PM CDTSevere Thunderstorm WarningDMXDallas, Guthrie52 min
Apr 15, 8:54 PM CDTSevere Thunderstorm WarningDMXCarroll66 min
Apr 15, 8:58 PM CDTSevere Thunderstorm WarningDMXAdair, Madison, Union47 min
Apr 15, 9:29 PM CDTSevere Thunderstorm WarningDMXDecatur31 min
Apr 15, 10:06 PM CDTTornado WarningDMXAppanoose39 min
Apr 15, 10:36 PM CDTSevere Thunderstorm WarningDMXDavis, Wapello39 min
Apr 15, 10:39 PM CDTSevere Thunderstorm WarningDMXMonroe51 min
Apr 15, 11:06 PM CDTSevere Thunderstorm WarningDMXMahaska39 min

Nearby

Tornado Warnings in Iowa, 2006Every tornado warning in 2006Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.