Alert archive / Iowa / Tornado Warnings in 2007

Tornado Warning 28, NWS Des Moines, IA

June 22, 2007Warren County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 22, 2007, 4:59 PM CDT for Warren County, Iowa. It was in force for 31 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: Jun 22, 2007, 4:59 PM CDT (21:59 UTC)
Expired: Jun 22, 2007, 5:30 PM CDT
In force: 31 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), 43 km from the middle of the area, began a volume at 22:01 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

Time	Report	Where	Remark
Jun 22, 5:08 PM CDT	TSTM WND DMG	Indianola, IA	TREES 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.

Issued	Product	Office	Lasted
Jun 22, 1:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 240 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: 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 222200
TORDMX
IAC181-222230-
/O.NEW.KDMX.TO.W.0028.070622T2159Z-070622T2230Z/

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

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

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

* UNTIL 530 PM CDT

* AT 457 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES NORTH OF
  INDIANOLA...OR ABOUT 9 MILES SOUTHEAST OF DES MOINES...MOVING EAST
  AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  HARTFORD AND 7 MILES NORTH OF SANDYVILLE BY 510 PM CDT...

STRONG WINDS WILL OCCUR IN WESTERN WARREN COUNTY FOLLOWING THE 
TORNADIC ACTIVITY. 

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 4150 9376 4150 9334 4146 9333 4141 9334
      4138 9333 4118 9334 4118 9372

$$

1 follow-up statement

000 
WWUS53 KDMX 222216
SVSDMX

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

IAC181-222230-
/O.CON.KDMX.TO.W.0028.000000T0000Z-070622T2230Z/
WARREN IA-
517 PM CDT FRI JUN 22 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR WARREN
COUNTY...

AT 514 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HARTFORD...OR
ABOUT 13 MILES SOUTHEAST OF DES MOINES...MOVING EAST AT 30 MPH.

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

LAT...LON 4150 9376 4150 9334 4146 9333 4141 9334
      4138 9333 4118 9334 4118 9372

$$

JOHNSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 7:37 PM CDT	Severe Thunderstorm Warning	DMX	Davis	39 min
Jun 22, 1:21 PM CDT	Severe Thunderstorm Warning	DMX	Carroll	39 min
Jun 22, 1:30 PM CDT	Severe Thunderstorm Warning	DMX	Boone	45 min
Jun 22, 1:43 PM CDT	Severe Thunderstorm Warning	DMX	Greene	47 min
Jun 22, 1:50 PM CDT	Tornado Warning	DMX	Boone	40 min
Jun 22, 1:57 PM CDT	Severe Thunderstorm Warning	DMX	Dallas	48 min
Jun 22, 2:07 PM CDT	Tornado Warning	DMX	Dallas	23 min
Jun 22, 2:19 PM CDT	Tornado Warning	DMX	Franklin, Wright	26 min
Jun 22, 2:25 PM CDT	Severe Thunderstorm Warning	DMX	Greene	50 min
Jun 22, 2:29 PM CDT	Tornado Warning	DMX	Dallas, Polk	31 min
Jun 22, 2:32 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Story	25 min
Jun 22, 2:40 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	50 min
Jun 22, 3:12 PM CDT	Severe Thunderstorm Warning	DMX	Polk	28 min
Jun 22, 3:37 PM CDT	Flash Flood Warning	DMX	Dallas, Polk	6 hr
Jun 22, 3:37 PM CDT	Flash Flood Warning	DMX	Dallas, Guthrie, Polk	6 hr
Jun 22, 3:58 PM CDT	Severe Thunderstorm Warning	DMX	Guthrie	47 min
Jun 22, 4:03 PM CDT	Severe Thunderstorm Warning	DMX	Dallas	30 min
Jun 22, 4:11 PM CDT	Severe Thunderstorm Warning	DMX	Madison	49 min
Jun 22, 4:14 PM CDT	Severe Thunderstorm Warning	DMX	Polk, Warren	46 min
Jun 22, 4:20 PM CDT	Flash Flood Warning	DMX	Franklin, Hamilton, Hardin, Wright	6 hr
Jun 22, 4:24 PM CDT	Flash Flood Warning	DMX	Butler, Grundy	6 hr
Jun 22, 4:30 PM CDT	Tornado Warning	DMX	Warren	30 min
Jun 22, 4:42 PM CDT	Flash Flood Warning	DMX	Polk	6 hr
Jun 22, 5:01 PM CDT	Severe Thunderstorm Warning	DMX	Polk	44 min
Jun 22, 5:08 PM CDT	Severe Thunderstorm Warning	DMX	Lucas, Marion, Monroe	52 min
Jun 22, 5:10 PM CDT	Flash Flood Warning	DMX	Marshall	6 hr
Jun 22, 5:15 PM CDT	Severe Thunderstorm Warning	DMX	Madison	30 min
Jun 22, 5:18 PM CDT	Severe Thunderstorm Warning	DMX	Adair	42 min
Jun 22, 5:25 PM CDT	Flash Flood Warning	DMX	Tama	6 hr
Jun 22, 5:29 PM CDT	Severe Thunderstorm Warning	DMX	Warren	31 min
Jun 22, 5:36 PM CDT	Flash Flood Warning	DMX	Adair, Madison	6 hr

Nearby

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