Alert archive / Iowa / Tornado Warnings in 2008

Tornado Warning 111, NWS Des Moines, IA

June 27, 2008Appanoose County, Wayne County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 27, 2008, 8:07 PM CDT for Appanoose County, Wayne County, Iowa. It was in force for 23 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 27, 2008, 8:07 PM CDT (01:07 UTC)
Expired
Jun 27, 2008, 8:30 PM CDT
In force
23 min
Issued by
NWS Des Moines, IA
Area
Storm-based polygon

Counties Appanoose County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 136 km from the middle of the area, began a volume at 01:09 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.

IssuedProductOfficeLasted
Jun 27, 5:46 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.1 hours before the alert went out and 241 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, Davenport, at 00:00Z on 2008-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 313 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2008-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
313 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1000 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
-34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDMX 280107
TORDMX
IAC007-185-280130-
/O.NEW.KDMX.TO.W.0111.080628T0107Z-080628T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
807 PM CDT FRI JUN 27 2008

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN APPANOOSE COUNTY IN SOUTH CENTRAL IOWA...
  SOUTHEASTERN WAYNE COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 830 PM CDT.

* AT 804 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES WEST OF
  NUMA...OR 38 MILES WEST OF LANCASTER...MOVING EAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...
  CINCINNATI AND NUMA BY 820 PM CDT...
  EXLINE BY 825 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.

LAT...LON 4058 9326 4068 9326 4069 9265 4058 9268
      4058 9322
TIME...MOT...LOC 0107Z 276DEG 48KT 4062 9318

$$

ALBRECHT
3 follow-up statements
000 
WWUS53 KDMX 280115
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
815 PM CDT FRI JUN 27 2008

IAC007-185-280130-
/O.CON.KDMX.TO.W.0111.000000T0000Z-080628T0130Z/
APPANOOSE IA-WAYNE IA-
815 PM CDT FRI JUN 27 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHEASTERN WAYNE AND SOUTHERN APPANOOSE COUNTIES...

AT 813 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 8 MILES SOUTHWEST OF
NUMA...OR 31 MILES WEST OF LANCASTER...MOVING EAST AT 53 MPH.

THE TORNADO WILL BE NEAR...
  NUMA BY 820 PM CDT...
  CINCINNATI BY 825 PM CDT...
  EXLINE BY 830 PM CDT...

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

LAT...LON 4059 9317 4068 9314 4069 9265 4058 9268
TIME...MOT...LOC 0115Z 276DEG 46KT 4061 9307

$$

ALBRECHT
000 
WWUS53 KDMX 280122
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
822 PM CDT FRI JUN 27 2008

IAC185-280132-
/O.CAN.KDMX.TO.W.0111.000000T0000Z-080628T0130Z/
WAYNE IA-
822 PM CDT FRI JUN 27 2008

...THE TORNADO WARNING FOR SOUTHEASTERN WAYNE COUNTY IS CANCELLED...

AT 817 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. 
THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM CDT
SATURDAY MORNING FOR IOWA.

LAT...LON 4059 9310 4068 9306 4069 9265 4058 9268
TIME...MOT...LOC 0122Z 272DEG 40KT 4061 9297

$$

IAC007-280130-
/O.CON.KDMX.TO.W.0111.000000T0000Z-080628T0130Z/
APPANOOSE IA-
822 PM CDT FRI JUN 27 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR SOUTHERN
APPANOOSE COUNTY...

AT 817 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED 6 MILES SOUTHWEST OF
NUMA...OR 28 MILES WEST OF LANCASTER...MOVING EAST AT 45 MPH.

THE TORNADO WILL BE NEAR...
  EXLINE BY 830 PM CDT...

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

LAT...LON 4059 9310 4068 9306 4069 9265 4058 9268
TIME...MOT...LOC 0122Z 272DEG 40KT 4061 9297

$$

ALBRECHT
000 
WWUS53 KDMX 280128
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
828 PM CDT FRI JUN 27 2008

IAC007-280138-
/O.EXP.KDMX.TO.W.0111.000000T0000Z-080628T0130Z/
APPANOOSE IA-
828 PM CDT FRI JUN 27 2008

...THE TORNADO WARNING FOR SOUTHERN APPANOOSE COUNTY WILL EXPIRE AT
830 PM CDT...

AT 826 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND NO
LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE
TORNADO WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4059 9310 4068 9306 4069 9265 4058 9268
TIME...MOT...LOC 0128Z 272DEG 40KT 4061 9288

$$

ALBRECHT

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 7:15 PM CDTSevere Thunderstorm WarningDMXClarke, Decatur, Ringgold45 min
Jun 27, 7:20 PM CDTSevere Thunderstorm WarningDMXTama40 min
Jun 27, 7:37 PM CDTSevere Thunderstorm WarningDMXPoweshiek, Tama19 min
Jun 27, 7:38 PM CDTSevere Thunderstorm WarningDMXDecatur, Wayne37 min
Jun 28, 3:30 AM CDTWind AdvisoryDMXAdair, Adams, Audubon, Boone, Butler, Calhoun and 27 more15 hr

Nearby

Tornado Warnings in Iowa, 2008Every tornado warning in 2008Tornadoes 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; radar from the NEXRAD Level II archive.