Alert archive / Iowa / Tornado Warnings in 2007

Tornado Warning 27, NWS Des Moines, IA

June 22, 2007Warren County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 22, 2007, 4:30 PM CDT for Warren County, Iowa. It was in force for 30 min. 7 reports 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
Jun 22, 2007, 4:30 PM CDT (21:30 UTC)
Expired
Jun 22, 2007, 5:00 PM CDT
In force
30 min
Issued by
NWS Des Moines, IA
Area
Counties, with a storm outline in the text

County Warren County, IA

The radar

The Des Moines radar (KDMX), 38 km from the middle of the area, began a volume at 21:32 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
Jun 22, 4:35 PM CDTTORNADO5 W Norwalk, IABEGINNING OF CUMMING TORNADO TRACK.
Jun 22, 4:35 PM CDTTORNADOCumming, IADAMAGE REPORTS FROM TORNADO..IN CUMMING ... METAL BUILDING SIDING TORN OFF ... GARAGE DESTROYED ... POWER LINES DOWNED ... I-35 EXIT TO CUMMING IS CLOSED DUE TO RESIDENCE PROPANE TANK PUNCTURED ... NUMEROUS TREES UP TO 1 1/2 FT DIAMETER AND 30 FT TALL DOWNED
Jun 22, 4:38 PM CDTTORNADO6 Sw Des Moines Int Air, IAEND OF CUMMING TORNADO TRACK.
Jun 22, 4:40 PM CDTTSTM WND GST 801 Sw Norwalk, IASUBSTANTIAL TREE DAMAGE. NWS STORM SURVEY ESTIMATES WINDS UP TO 80 MPH.
Jun 22, 4:40 PM CDTTORNADO3 Ssw Des Moines Int Ai, IABEGINNING OF NORWALK TORNADO TRACK.
Jun 22, 4:44 PM CDTTORNADO5 S Des Moines Int Airp, IAEND OF NORWALK TORNADO TRACK.
Jun 22, 5:08 PM CDTTSTM WND DMGIndianola, IATREES AND POWER LINES GOING DOWN.

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
Jun 22, 1:49 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.5 hours before the alert went out and 238 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 12:00Z on 2007-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 236 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 12:00Z on 2007-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.193958Sfc1 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
236 J/kg
Mixed-layer CIN
-370 J/kg
Mixed-layer LCL
1448 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
13 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 222129
TORDMX
IAC181-222200-
/O.NEW.KDMX.TO.W.0027.070622T2130Z-070622T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
430 PM CDT FRI JUN 22 2007

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN WARREN COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 500 PM CDT

* AT 427 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES
  SOUTHWEST OF NORWALK...OR ABOUT 13 MILES SOUTHWEST OF DES MOINES...
  MOVING SOUTHEAST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  NORWALK BY 435 PM CDT...
  INDIANOLA BY 445 PM CDT...

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 52 AND 66.

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR IOWA.

LAT...LON 4128 9380 4150 9380 4150 9343 4150 9342
      4149 9341 4150 9340 4149 9333 4129 9333

$$

DONAVON
3 follow-up statements
000 
WWUS53 KDMX 222134
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
434 PM CDT FRI JUN 22 2007

IAC181-222200-
/O.CON.KDMX.TO.W.0027.000000T0000Z-070622T2200Z/
WARREN IA-
434 PM CDT FRI JUN 22 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTHERN
WARREN COUNTY...

AT 432 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR CUMMING...OR ABOUT
10 MILES SOUTHWEST OF DES MOINES...MOVING EAST AT 30 MPH.

THE TORNADO WILL BE NEAR...
  NORWALK BY 440 PM CDT...
  SPRING HILL BY 445 PM CDT...
  7 MILES NORTH OF INDIANOLA BY 450 PM CDT...
  CARLISLE BY 455 PM CDT...
  HARTFORD...6 MILES NORTH OF ACKWORTH AND 7 MILES NORTHWEST OF
  SANDYVILLE BY 500 PM CDT...

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 52 AND 66.

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

A FUNNEL CLOUD WAS REPORTED WEST OF NORWALK BY LAW ENFORCEMENT AT 
630 PM. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT 
UNTIL 900 PM CDT FRIDAY EVENING FOR IOWA.

LAT...LON 4128 9380 4150 9380 4150 9343 4150 9342
      4149 9341 4150 9340 4149 9333 4129 9333

$$
000 
WWUS53 KDMX 222137
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
437 PM CDT FRI JUN 22 2007

IAC181-222200-
/O.CON.KDMX.TO.W.0027.000000T0000Z-070622T2200Z/
WARREN IA-
437 PM CDT FRI JUN 22 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTHERN
WARREN COUNTY...

AT 436 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR NORWALK...OR ABOUT 8 MILES SOUTHWEST OF DES
MOINES...MOVING EAST AT 30 MPH.

THE TORNADO WILL BE NEAR...
  SPRING HILL BY 445 PM CDT...
  7 MILES NORTH OF INDIANOLA BY 450 PM CDT...
  CARLISLE BY 455 PM CDT...
  HARTFORD...6 MILES NORTH OF ACKWORTH AND 7 MILES NORTHWEST OF
  SANDYVILLE BY 500 PM CDT...

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 52 AND 66.

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.

PUBLIC REPORTED TORNADO NEAR CUMMING AT 636 PM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR IOWA.

LAT...LON 4128 9380 4150 9380 4150 9343 4150 9342
      4149 9341 4150 9340 4149 9333 4129 9333

$$
000 
WWUS53 KDMX 222149
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
448 PM CDT FRI JUN 22 2007

IAC181-222200-
/O.CON.KDMX.TO.W.0027.000000T0000Z-070622T2200Z/
WARREN IA-
448 PM CDT FRI JUN 22 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTHERN
WARREN COUNTY...

AT 444 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR NORWALK...OR ABOUT 7 MILES SOUTH OF DES
MOINES...MOVING EAST AT 25 MPH.

THE TORNADO WILL BE NEAR...
  7 MILES NORTH OF INDIANOLA BY 455 PM CDT...
  CARLISLE...6 MILES WEST OF HARTFORD AND 7 MILES NORTH OF ACKWORTH
  BY 500 PM CDT...

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 52 AND 66.

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.

REPORTS OF DAMAGE HAVE BEEN RECIEVED FROM THE NORWALK AREA INCLUDING 
POWER LINES AND TREES DOWN.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM CDT FRIDAY
EVENING FOR IOWA.

LAT...LON 4128 9380 4150 9380 4150 9343 4150 9342
      4149 9341 4150 9340 4149 9333 4129 9333

$$

DONAVON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:37 PM CDTSevere Thunderstorm WarningDMXDavis39 min
Jun 22, 1:21 PM CDTSevere Thunderstorm WarningDMXCarroll39 min
Jun 22, 1:30 PM CDTSevere Thunderstorm WarningDMXBoone45 min
Jun 22, 1:43 PM CDTSevere Thunderstorm WarningDMXGreene47 min
Jun 22, 1:50 PM CDTTornado WarningDMXBoone40 min
Jun 22, 1:57 PM CDTSevere Thunderstorm WarningDMXDallas48 min
Jun 22, 2:07 PM CDTTornado WarningDMXDallas23 min
Jun 22, 2:19 PM CDTTornado WarningDMXFranklin, Wright26 min
Jun 22, 2:25 PM CDTSevere Thunderstorm WarningDMXGreene50 min
Jun 22, 2:29 PM CDTTornado WarningDMXDallas, Polk31 min
Jun 22, 2:32 PM CDTSevere Thunderstorm WarningDMXBoone, Story25 min
Jun 22, 2:40 PM CDTSevere Thunderstorm WarningDMXDallas, Polk50 min
Jun 22, 3:12 PM CDTSevere Thunderstorm WarningDMXPolk28 min
Jun 22, 3:37 PM CDTFlash Flood WarningDMXDallas, Polk6 hr
Jun 22, 3:37 PM CDTFlash Flood WarningDMXDallas, Guthrie, Polk6 hr
Jun 22, 3:58 PM CDTSevere Thunderstorm WarningDMXGuthrie47 min
Jun 22, 4:03 PM CDTSevere Thunderstorm WarningDMXDallas30 min
Jun 22, 4:11 PM CDTSevere Thunderstorm WarningDMXMadison49 min
Jun 22, 4:14 PM CDTSevere Thunderstorm WarningDMXPolk, Warren46 min
Jun 22, 4:20 PM CDTFlash Flood WarningDMXFranklin, Hamilton, Hardin, Wright6 hr
Jun 22, 4:24 PM CDTFlash Flood WarningDMXButler, Grundy6 hr
Jun 22, 4:42 PM CDTFlash Flood WarningDMXPolk6 hr
Jun 22, 4:59 PM CDTTornado WarningDMXWarren31 min
Jun 22, 5:01 PM CDTSevere Thunderstorm WarningDMXPolk44 min
Jun 22, 5:08 PM CDTSevere Thunderstorm WarningDMXLucas, Marion, Monroe52 min
Jun 22, 5:10 PM CDTFlash Flood WarningDMXMarshall6 hr
Jun 22, 5:15 PM CDTSevere Thunderstorm WarningDMXMadison30 min
Jun 22, 5:18 PM CDTSevere Thunderstorm WarningDMXAdair42 min
Jun 22, 5:25 PM CDTFlash Flood WarningDMXTama6 hr
Jun 22, 5:29 PM CDTSevere Thunderstorm WarningDMXWarren31 min
Jun 22, 5:36 PM CDTFlash Flood WarningDMXAdair, Madison6 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.