Alert archive / Iowa / Tornado Warnings in 2009
Tornado Warning 13, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Jun 21, 2009, 6:41 PM CDT for Butler County, Grundy County, Hardin County, Iowa. It was in force for 34 min. 5 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 21, 2009, 6:41 PM CDT (23:41 UTC)
- Expired
- Jun 21, 2009, 7:15 PM CDT
- In force
- 34 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
Counties Butler County, IA, Grundy County, IA, Hardin County, IA
The radar
The Des Moines radar (KDMX), 104 km from the middle of the area, began a volume at 23:41 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 21, 6:51 PM CDT | TORNADO | 5 Nne Steamboat Rock, IA | BRIEF TOUCHDOWN JUST EAST OF CLEVES. |
| Jun 21, 6:53 PM CDT | TORNADO | 6 Nne Eldora, IA | BRIEF TORNADO LASTED 30 SECONDS...NO DAMAGE. DELAYED REPORT |
| Jun 21, 6:59 PM CDT | TORNADO | 3 Nne Steamboat Rock, IA | TORNADO WITH SMALL DEBRIS CLOUD JUST NORTH OF HIGHWAY 20. DELAYED REPORT. |
| Jun 21, 7:07 PM CDT | FUNNEL CLOUD | Nnw Wellsburg, IA | |
| Jun 21, 7:16 PM CDT | TSTM WND GST 60 | 2 N Wellsburg, IA | TREE DAMAGE WITH 4 TO 6 INCH OR GREATER DIAMETER BRANCHES SNAPPED. HIGH WINDS ALSO IN WELLSBURG AT 1918 CDT. |
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 21, 3:17 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.7 hours before the alert went out and 229 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.
- Mixed-layer CAPE
- 60 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1229 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS53 KDMX 212341
TORDMX
IAC023-075-083-220015-
/O.NEW.KDMX.TO.W.0013.090621T2341Z-090622T0015Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
641 PM CDT SUN JUN 21 2009
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN BUTLER COUNTY IN NORTH CENTRAL IOWA...
NORTHWESTERN GRUNDY COUNTY IN CENTRAL IOWA...
NORTHEASTERN HARDIN COUNTY IN CENTRAL IOWA...
* UNTIL 715 PM CDT
* AT 638 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 8 MILES
NORTH OF ELDORA...OR 38 MILES WEST OF WATERLOO. DOPPLER RADAR
SHOWED THIS TORNADO MOVING EAST AT 10 MPH.
* THE TORNADO WILL BE NEAR...
ACKLEY BY 655 PM CDT...
ACKLEY BY 700 PM CDT...
WELLSBURG AND APLINGTON BY 715 PM CDT...
A TORNADO WAS ALSO REPORTED WITH THESE STORMS AT 630 PM CDT NORTH OF
STEAMBOAT ROCK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4240 9279 4241 9321 4253 9324 4256 9313
4255 9303 4258 9303 4262 9286
TIME...MOT...LOC 2341Z 255DEG 10KT 4248 9309
$$
COGIL4 follow-up statements
000
WWUS53 KDMX 212351
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
651 PM CDT SUN JUN 21 2009
IAC023-075-083-220015-
/O.CON.KDMX.TO.W.0013.000000T0000Z-090622T0015Z/
BUTLER IA-HARDIN IA-GRUNDY IA-
651 PM CDT SUN JUN 21 2009
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
NORTHWESTERN GRUNDY...NORTHEASTERN HARDIN AND SOUTHWESTERN BUTLER
COUNTIES...
AT 650 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS
TORNADO WAS LOCATED NEAR WELLSBURG...OR 33 MILES WEST OF WATERLOO...
MOVING EAST AT 20 MPH.
THE TORNADO WILL BE NEAR...
WELLSBURG BY 700 PM CDT...
APLINGTON BY 715 PM CDT...
ANOTHER CIRCULATION WAS INDICATED ON RADAR NORTH OF STEAMBOAT ROCK
THAT IS ALSO CAPABLE OF PRODUCING A TORNADO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.
&&
LAT...LON 4240 9279 4241 9321 4253 9324 4256 9313
4255 9303 4258 9303 4262 9286
TIME...MOT...LOC 2351Z 253DEG 16KT 4245 9298
$$
COGIL000
WWUS53 KDMX 212357
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
657 PM CDT SUN JUN 21 2009
IAC023-220007-
/O.CAN.KDMX.TO.W.0013.000000T0000Z-090622T0015Z/
BUTLER IA-
657 PM CDT SUN JUN 21 2009
...THE TORNADO WARNING FOR SOUTHWESTERN BUTLER COUNTY IS CANCELLED...
LAT...LON 4255 9284 4240 9279 4241 9314 4251 9311
4254 9307 4255 9303
TIME...MOT...LOC 2357Z 265DEG 18KT 4244 9294
$$
IAC075-083-220015-
/O.CON.KDMX.TO.W.0013.000000T0000Z-090622T0015Z/
HARDIN IA-GRUNDY IA-
657 PM CDT SUN JUN 21 2009
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
NORTHWESTERN GRUNDY AND NORTHEASTERN HARDIN COUNTIES...
AT 655 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS
TORNADO WAS LOCATED NEAR WELLSBURG...OR 31 MILES WEST OF WATERLOO...
MOVING EAST AT 20 MPH.
THE TORNADO WILL BE NEAR...
RURAL CENTRAL GRUNDY COUNTY
A SECOND CIRCULATION CAPABLE OF PRODUCING A TORNADO WAS LOCATED JUST
NORTH OF STEAMBOAT ROCK.
THESE TORNADOES WILL BE TRACKING THROUGH THE HIGHWAY 20 CORRIDOR IN
EXTREME EASTERN HARDIN COUNTY AND WESTERN GRUNDY COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.
&&
LAT...LON 4255 9284 4240 9279 4241 9314 4251 9311
4254 9307 4255 9303
TIME...MOT...LOC 2357Z 265DEG 18KT 4244 9294
$$
COGIL000
WWUS53 KDMX 220008
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
708 PM CDT SUN JUN 21 2009
IAC075-083-220015-
/O.CON.KDMX.TO.W.0013.000000T0000Z-090622T0015Z/
HARDIN IA-GRUNDY IA-
708 PM CDT SUN JUN 21 2009
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM CDT FOR
NORTHWESTERN GRUNDY AND NORTHEASTERN HARDIN COUNTIES...
AT 708 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS
TORNADO WAS LOCATED NEAR WELLSBURG...OR 30 MILES WEST OF WATERLOO...
MOVING EAST AT 10 MPH.
A SECONDARY CIRCULATION CAPABLE OF PRODUCING A TORNADO WAS LOCAATED
NORTHEAST OF STEAMBOAT ROCK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4255 9284 4240 9279 4241 9314 4251 9311
4254 9307 4255 9303
TIME...MOT...LOC 0009Z 253DEG 7KT 4245 9293
$$
COGIL000
WWUS53 KDMX 220014
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
714 PM CDT SUN JUN 21 2009
IAC075-083-220024-
/O.EXP.KDMX.TO.W.0013.000000T0000Z-090622T0015Z/
HARDIN IA-GRUNDY IA-
714 PM CDT SUN JUN 21 2009
...THE TORNADO WARNING FOR NORTHWESTERN GRUNDY AND NORTHEASTERN
HARDIN COUNTIES EXPIRES AT 715 PM CDT...
THIS WARNING HAS BEEN REPLACED WITH A NEW TORNADO WARNING FOR
CENTRAL GRUNDY COUNTY UNTIL 800 PM CDT.
LAT...LON 4255 9284 4240 9279 4241 9314 4251 9311
4254 9307 4255 9303
TIME...MOT...LOC 0014Z 253DEG 7KT 4245 9292
$$
COGILThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 3:41 PM CDT | Heat Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 66 hr |
| Jun 21, 4:56 PM CDT | Tornado Warning | DMX | Hamilton | 34 min |
| Jun 21, 5:35 PM CDT | Tornado Warning | DMX | Hamilton, Hardin | 25 min |
| Jun 21, 5:50 PM CDT | Tornado Warning | DMX | Franklin, Hardin | 25 min |
| Jun 21, 6:12 PM CDT | Tornado Warning | DMX | Hardin | 33 min |
Nearby
Tornado Warnings in Iowa, 2009Every tornado warning in 2009Tornadoes in 2009
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.