Alert archive / Iowa / Tornado Warnings in 2008
Tornado Warning 7, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at Apr 10, 2008, 5:42 PM CDT for Mahaska County, Poweshiek County, Iowa. It was in force for 48 min. 6 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
- Apr 10, 2008, 5:42 PM CDT (22:42 UTC)
- Expired
- Apr 10, 2008, 6:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
Counties Mahaska County, IA, Poweshiek County, IA
The radar
The Des Moines radar (KDMX), 107 km from the middle of the area, began a volume at 22:44 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 |
|---|---|---|---|
| Apr 10, 5:54 PM CDT | TSTM WND DMG | 1 E Oskaloosa, IA | TWO TREES UPROOTED. SIGN DAMAGE. POWER POLE LEANING. MINOR DAMAGE TO BUILDING EXTERIOR. |
| Apr 10, 5:55 PM CDT | TSTM WND DMG | 1 Ene Oskaloosa, IA | NUMEROUS TREES DAMAGED. SHINGLES OFF HOUSE. |
| Apr 10, 5:55 PM CDT | TSTM WND DMG | Oskaloosa, IA | ROOF DAMAGE AND POWER POLES DOWN IN OSKALOOSA DUE TO STRAIGHT LINE WINDS. |
| Apr 10, 5:55 PM CDT | TSTM WND GST 70 | N Oskaloosa, IA | |
| Apr 10, 6:02 PM CDT | HAIL 1 | 3 S New Sharon, IA | TRAINED SPOTTER REPORTS NICKEL UP TO QUARTER SIZED HAIL 3 MILES SOUTH OF NEW SHARON. |
| Apr 10, 6:21 PM CDT | TORNADO | 3 Ne Barnes City, IA | DAMAGE TO SEVERAL HOMES...GRAIN BINS...AND OUTBUILDINGS ALONG SEVEN MILE PATH. |
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 |
|---|---|---|---|
| Apr 10, 2:28 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 10, 4:55 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.7 hours before the alert went out and 168 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 475 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 305 m²/s²
- 0-3 km storm-relative helicity
- 419 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS53 KDMX 102241
TORDMX
IAC123-157-102330-
/O.NEW.KDMX.TO.W.0007.080410T2242Z-080410T2330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
542 PM CDT THU APR 10 2008
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHERN POWESHIEK COUNTY IN CENTRAL IOWA...
MAHASKA COUNTY IN SOUTH CENTRAL IOWA...
* UNTIL 630 PM CDT.
* AT 539 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A TORNADO 12 MILES SOUTHWEST OF OSKALOOSA...OR 19 MILES NORTHWEST
OF OTTUMWA...MOVING NORTHEAST AT 46 MPH.
* THE TORNADO WILL BE NEAR...
OSKALOOSA BY 555 PM CDT...
NEW SHARON BY 610 PM CDT...
MONTEZUMA BY 620 PM CDT...
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 185 AND 188.
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 TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHERN IOWA.
LAT...LON 4129 9286 4171 9267 4159 9228 4152 9229
4150 9231 4150 9241 4147 9240 4131 9240
4118 9254
TIME...MOT...LOC 2242Z 206DEG 40KT 4117 9273
$$
KINNEY5 follow-up statements
000
WWUS53 KDMX 102248
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
549 PM CDT THU APR 10 2008
IAC123-157-102330-
/O.CON.KDMX.TO.W.0007.000000T0000Z-080410T2330Z/
POWESHIEK IA-MAHASKA IA-
549 PM CDT THU APR 10 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR MAHASKA
AND SOUTHERN POWESHIEK COUNTIES...
AT 544 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES SOUTH OF
BEACON...OR 19 MILES NORTHWEST OF OTTUMWA...MOVING NORTHEAST AT 46
MPH.
THE TORNADO WILL BE NEAR...
OSKALOOSA...UNIVERSITY PARK AND KEOMAH VILLAGE BY 555 PM CDT...
8 MILES NORTHWEST OF ROSE HILL BY 600 PM CDT...
NEW SHARON BY 610 PM CDT...
BARNES CITY BY 615 PM CDT...
MONTEZUMA BY 620 PM CDT...
DEEP RIVER BY 625 PM CDT...
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 185 AND 188.
HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHERN IOWA.
LAT...LON 4129 9286 4171 9267 4159 9228 4152 9229
4150 9231 4150 9241 4147 9240 4131 9240
4118 9254
TIME...MOT...LOC 2249Z 206DEG 40KT 4124 9268
$$
KINNEY000
WWUS53 KDMX 102301
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
601 PM CDT THU APR 10 2008
IAC123-157-102330-
/O.CON.KDMX.TO.W.0007.000000T0000Z-080410T2330Z/
POWESHIEK IA-MAHASKA IA-
601 PM CDT THU APR 10 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR NORTHERN
MAHASKA AND SOUTHERN POWESHIEK COUNTIES...
AT 558 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR KEOMAH VILLAGE...
OR 22 MILES WEST OF SIGOURNEY...MOVING NORTHEAST AT 46 MPH.
THE TORNADO WILL BE NEAR...
6 MILES SOUTHEAST OF NEW SHARON BY 610 PM CDT...
BARNES CITY BY 615 PM CDT...
MONTEZUMA BY 620 PM CDT...
DEEP RIVER BY 625 PM CDT...
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 185 AND 188.
HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHERN IOWA.
LAT...LON 4137 9279 4171 9267 4159 9228 4152 9229
4150 9231 4150 9241 4147 9240 4131 9240
4126 9246
TIME...MOT...LOC 2301Z 206DEG 40KT 4136 9260
$$
KINNEY000
WWUS53 KDMX 102308
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
608 PM CDT THU APR 10 2008
IAC123-157-102330-
/O.CON.KDMX.TO.W.0007.000000T0000Z-080410T2330Z/
POWESHIEK IA-MAHASKA IA-
608 PM CDT THU APR 10 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR NORTHERN
MAHASKA AND SOUTHERN POWESHIEK COUNTIES...
AT 607 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES SOUTHEAST OF
NEW SHARON...OR 19 MILES WEST OF SIGOURNEY...MOVING NORTHEAST AT 40
MPH.
THE TORNADO WILL BE NEAR...
BARNES CITY BY 620 PM CDT...
MONTEZUMA BY 625 PM CDT...
DEEP RIVER BY 630 PM CDT...
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 185 AND 188.
SEEK SHELTER IN A BASEMENT...OR IN AN INTERIOR ROOM. STAY AWAY FROM
WINDOWS. IF YOU ARE IN A CAR OR OUTSIDE...SEEK SHELTER IN A
REINFORCED BUILDING.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
LARGE HAIL AND HIGH WINDS. LAW ENFORCEMENT REPORTED SHINGLES OFF OF
A ROOF AND POWER POLES DOWN IN THE OSKALOOSA AREA AT 553 PM
CDT.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHERN IOWA.
LAT...LON 4137 9279 4171 9267 4159 9228 4152 9229
4150 9231 4150 9241 4147 9240 4131 9240
4126 9246
TIME...MOT...LOC 2308Z 206DEG 35KT 4143 9255
$$
KINNEY000
WWUS53 KDMX 102319
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
618 PM CDT THU APR 10 2008
IAC123-157-102330-
/O.CON.KDMX.TO.W.0007.000000T0000Z-080410T2330Z/
POWESHIEK IA-MAHASKA IA-
618 PM CDT THU APR 10 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR
NORTHEASTERN MAHASKA AND SOUTHERN POWESHIEK COUNTIES...
AT 615 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR BARNES CITY...OR
19 MILES NORTHWEST OF SIGOURNEY...MOVING NORTHEAST AT 40 MPH.
THE TORNADO WILL BE NEAR...
DEEP RIVER BY 625 PM CDT...
THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 185 AND 188.
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.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
LARGE HAIL AND HIGH WINDS. LAW ENFORCEMENT REPORTED QUARTER SIZE
HAIL 3 SOUTH OF NEW SHARON AT 605 PM CDT.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHERN IOWA.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM CDT
THURSDAY EVENING FOR SOUTHWESTERN IOWA.
LAT...LON 4155 9272 4165 9268 4171 9267 4159 9228
4152 9229 4150 9231 4150 9241 4144 9241
TIME...MOT...LOC 2318Z 206DEG 35KT 4153 9247
$$
KINNEY000
WWUS53 KDMX 102330
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
631 PM CDT THU APR 10 2008
IAC123-157-102341-
/O.EXP.KDMX.TO.W.0007.000000T0000Z-080410T2330Z/
POWESHIEK IA-MAHASKA IA-
631 PM CDT THU APR 10 2008
...THE TORNADO WARNING FOR NORTHEASTERN MAHASKA AND SOUTHERN
POWESHIEK COUNTIES HAS EXPIRED...
AT 628 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.
REPORT TORNADOES...WIND IN EXCESS OF 50 MPH...HAIL LARGER THAN ONE
HALF INCH...OR STORM DAMAGE BY CALLING LOCAL LAW ENFORCEMENT AND
ASKING THEM TO RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHERN IOWA.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM CDT
THURSDAY EVENING FOR SOUTHWESTERN IOWA.
LAT...LON 4155 9272 4165 9268 4171 9267 4159 9228
4152 9229 4150 9231 4150 9241 4144 9241
TIME...MOT...LOC 2319Z 206DEG 35KT 4154 9246
$$
KINNEYThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 9:53 PM CDT | River Flood Warning | DMX | Lucas | 60 hr |
| Apr 10, 4:17 AM CDT | Wind Advisory | DMX | Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more | 17 hr |
| Apr 10, 4:24 PM CDT | Tornado Warning | DMX | Clarke, Decatur, Lucas, Wayne | 51 min |
| Apr 10, 4:49 PM CDT | Tornado Warning | DMX | Clarke, Lucas, Warren | 26 min |
| Apr 10, 4:52 PM CDT | Tornado Warning | DMX | Appanoose, Wayne | 23 min |
| Apr 10, 5:11 PM CDT | Tornado Warning | DMX | Appanoose, Mahaska, Marion, Monroe, Wapello | 34 min |
| Apr 10, 5:25 PM CDT | Tornado Warning | DMX | Mahaska, Marion | 20 min |
| Apr 10, 6:11 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe | 35 min |
| Apr 10, 6:27 PM CDT | Tornado Warning | DMX | Poweshiek, Tama | 48 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.