Alert archive / Iowa / Tornado Warnings in 2007

Tornado Warning 14, NWS Des Moines, IA

June 7, 2007Lucas County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 7, 2007, 12:17 PM CDT for Lucas County, Iowa. It was in force for 28 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 7, 2007, 12:17 PM CDT (17:17 UTC)
Expired
Jun 7, 2007, 12:45 PM CDT
In force
28 min
Issued by
NWS Des Moines, IA
Area
Counties, with a storm outline in the text

County Lucas County, IA

The radar

The Des Moines radar (KDMX), 73 km from the middle of the area, began a volume at 17:18 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 7, 11:34 AM CDTTornado Watch PDSSPC10 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 5.3 hours before the alert went out and 246 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 12:00Z on 2007-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 44 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 12:00Z on 2007-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 372 square meters per square second.19395878Sfc1 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
44 J/kg
Mixed-layer CIN
-791 J/kg
Mixed-layer LCL
1362 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
372 m²/s²
0-3 km storm-relative helicity
374 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 071716
TORDMX
IAC117-071745-
/O.NEW.KDMX.TO.W.0014.070607T1717Z-070607T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
1217 PM CDT THU JUN 7 2007

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LUCAS COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 1245 PM CDT

* AT 1214 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER EAST
  CENTRAL CLARKE COUNTY...OR ABOUT 35 MILES SOUTH OF DES MOINES...
  MOVING NORTHEAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL NORTHERN LUCAS COUNTY AT 1230 PM CDT

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.

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

LAT...LON 4116 9319 4103 9356 4116 9356

$$

JUNGBLUTH
2 follow-up statements
000 
WWUS53 KDMX 071732
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1232 PM CDT THU JUN 7 2007

IAC117-071745-
/O.CON.KDMX.TO.W.0014.000000T0000Z-070607T1745Z/
LUCAS IA-
1232 PM CDT THU JUN 7 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1245 PM CDT FOR
NORTHWESTERN LUCAS COUNTY...

AT 1228 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED OVER EXTREME
NORTHWESTERN LUCAS COUNTY...OR ABOUT 32 MILES SOUTH OF DES MOINES...
MOVING NORTHEAST AT 45 MPH.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

WARREN COUNTY SPOTTERS REPORTED SIGNIFICANT ROTATION ALONG THE LUCAS 
AND WARREN COUNTY LINES...JUST SOUTH OF LACONA.

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

LAT...LON 4116 9319 4103 9356 4116 9356

$$

JUNGBLUTH
000 
WWUS53 KDMX 071746
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1247 PM CDT THU JUN 7 2007

IAC117-071757-
/O.EXP.KDMX.TO.W.0014.000000T0000Z-070607T1745Z/
LUCAS IA-
1247 PM CDT THU JUN 7 2007

...THE TORNADO WARNING FOR NORTHWESTERN LUCAS COUNTY EXPIRES AT 1245
PM CDT...

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

LAT...LON 4116 9319 4103 9356 4116 9356

$$

JUNGBLUTH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 3:47 AM CDTWind AdvisoryDMXAudubon, Black Hawk, Boone, Bremer, Butler, Calhoun and 27 more16 hr
Jun 7, 11:27 AM CDTTornado WarningDMXRinggold22 min
Jun 7, 11:44 AM CDTTornado WarningDMXClarke, Decatur31 min
Jun 7, 12:28 PM CDTTornado WarningDMXMarion, Warren47 min
Jun 7, 1:14 PM CDTSevere Thunderstorm WarningDMXLucas, Wayne35 min
Jun 7, 1:17 PM CDTSevere Thunderstorm WarningDMXMarion43 min
Jun 7, 2:14 PM CDTSevere Thunderstorm WarningDMXMahaska19 min
Jun 7, 2:20 PM CDTTornado WarningDMXAppanoose, Monroe, Wayne25 min
Jun 7, 3:02 PM CDTSevere Thunderstorm WarningDMXAppanoose, Monroe28 min
Jun 7, 3:18 PM CDTSevere Thunderstorm WarningDMXWapello26 min

Nearby

Tornado Warnings in Iowa, 2007Every tornado warning in 2007Tornadoes in 2007

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.