Alert archive / Iowa / Tornado Warnings in 2008
Tornado Warning 8, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Apr 10, 2008, 7:04 PM CDT for Benton County, Iowa County, Iowa. It was in force for 41 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
- Apr 10, 2008, 7:04 PM CDT (00:04 UTC)
- Expired
- Apr 10, 2008, 7:45 PM CDT
- In force
- 41 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
Counties Benton County, IA, Iowa County, IA
The radar
The Quad Cities radar (KDVN), 130 km from the middle of the area, began a volume at 00:07 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 nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 0.1 hours before the alert went out and 137 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
- 325 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 106 kt
- 0-1 km storm-relative helicity
- 717 m²/s²
- 0-3 km storm-relative helicity
- 704 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDVN 110004 TORDVN IAC011-095-110045- /O.NEW.KDVN.TO.W.0008.080411T0004Z-080411T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 704 PM CDT THU APR 10 2008 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN BENTON COUNTY IN EAST CENTRAL IOWA... IOWA COUNTY IN EAST CENTRAL IOWA... * UNTIL 745 PM CDT. * AT 703 PM CDT...TRAINED SPOTTERS REPORTED A TORNADO NEAR NORTH ENGLISH...OR 17 MILES NORTHEAST OF SIGOURNEY...MOVING NORTH AT 43 MPH. * THE TORNADO WILL BE NEAR... WILLIAMSBURG AROUND 715 PM CDT... CONROY AROUND 720 PM CDT... 6 MILES EAST OF MARENGO AROUND 725 PM CDT... 9 MILES EAST OF BLAIRSTOWN AROUND 735 PM CDT... NORWAY AROUND 740 PM CDT... ATKINS...NEWHALL AND 9 MILES SOUTH OF SHELLSBURG AROUND 745 PM CDT... THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 207 AND 223. THE SAFEST PLACE TO BE IN A TORNADO IS IN A BASEMENT OR INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR OF A BUILDING. THIS STORM HAS ALREADY PRODUCED A TORNADO AND REMAINS A THREAT. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI. LAT...LON 4210 9225 4210 9183 4151 9197 4152 9227 TIME...MOT...LOC 0004Z 198DEG 37KT 4156 9205 $$ MCCLURE
2 follow-up statements
000
WWUS53 KDVN 110038
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
737 PM CDT THU APR 10 2008
IAC095-110047-
/O.CAN.KDVN.TO.W.0008.000000T0000Z-080411T0045Z/
IOWA IA-
737 PM CDT THU APR 10 2008
...THE TORNADO WARNING FOR IOWA COUNTY IS CANCELLED...
THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING A TORNADO HAS
MOVED OUT OF THE WARNED AREA. THEREFORE THE TORNADO WARNING HAS BEEN
CANCELLED.
HOWEVER...STORMS WEST OF LADORA AND NEAR AMANA ARE STILL CAPABLE OF
PRODUCING STRONG GUSTY WINDS AND SMALL HAIL.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
LAT...LON 4187 9223 4210 9225 4210 9183 4207 9184
4207 9185 4205 9184 4201 9186 4186 9189
TIME...MOT...LOC 0037Z 203DEG 38KT 4204 9190
$$
IAC011-110045-
/O.CON.KDVN.TO.W.0008.000000T0000Z-080411T0045Z/
BENTON IA-
737 PM CDT THU APR 10 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR SOUTHERN
BENTON COUNTY...
AT 733 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED APPROXIMATELY NEAR
NEWHALL...OR 13 MILES SOUTHEAST OF VINTON...MOVING NORTHEAST AT 43
MPH.
THE SAFEST PLACE TO BE IN A TORNADO IS IN A BASEMENT OR INTERIOR ROOM
OR HALLWAY ON THE LOWEST FLOOR OF A BUILDING.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
LAT...LON 4187 9223 4210 9225 4210 9183 4207 9184
4207 9185 4205 9184 4201 9186 4186 9189
TIME...MOT...LOC 0037Z 203DEG 38KT 4204 9190
$$
MCCLURE000
WWUS53 KDVN 110044
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
742 PM CDT THU APR 10 2008
IAC011-110052-
/O.EXP.KDVN.TO.W.0008.000000T0000Z-080411T0045Z/
BENTON IA-
742 PM CDT THU APR 10 2008
...THE TORNADO WARNING FOR SOUTHERN BENTON COUNTY EXPIRES AT 745 PM
CDT...
THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING A TORNADO HAS
WEAKENED. THEREFORE THE TORNADO WARNING HAS BEEN ALLOWED TO EXPIRE.
HOWEVER...STRONG THUNDERSTORMS WILL CONTINUE THROUGH 8:15 PM FROM
NEAR NEWHALL AND NORWAY...TO SHELLSBURG AND URBANA. THESE STORMS
WILL BRING VERY HEAVY RAIN. STRONG GUSTY WINDS AND SMALL HAIL ARE ALSO
POSSIBLE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT THURSDAY EVENING
FOR SOUTHEAST IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
LAT...LON 4187 9223 4210 9225 4210 9183 4207 9184
4207 9185 4205 9184 4201 9186 4186 9189
TIME...MOT...LOC 0042Z 203DEG 38KT 4209 9187
$$
MCCLUREThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 7:15 PM CDT | Tornado Warning | DVN | Benton, Iowa, Johnson, Keokuk, Linn, Washington | 45 min |
| Apr 10, 8:23 PM CDT | Severe Thunderstorm Warning | DVN | Johnson, Louisa, Muscatine, Washington | 20 min |
| Apr 10, 11:01 PM CDT | River Flood Warning | DVN | Iowa, Johnson | 37 days |
| Apr 11, 3:42 AM CDT | River Flood Warning | DVN | Johnson, Washington | 42 hr |
| Apr 11, 5:12 AM CDT | River Flood Warning | DVN | Keokuk | 30 hr |
| Apr 11, 9:38 AM CDT | River Flood Warning | DVN | Cedar, Louisa, Muscatine | 26 days |
| Apr 11, 9:38 AM CDT | River Flood Warning | DVN | Louisa | 4 days |
| Apr 11, 9:51 AM CDT | River Flood Warning | DVN | Lee | 11 hr |
| Apr 11, 10:50 AM CDT | River Flood Warning | DVN | Muscatine, Scott | 72 hr |
| Apr 11, 10:50 AM CDT | River Flood Warning | DVN | Louisa, Muscatine | 72 hr |
| Apr 11, 10:50 AM CDT | River Flood Warning | DVN | Louisa, Muscatine | 38 days |
| Apr 11, 10:50 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 40 days |
| Apr 11, 10:50 AM CDT | River Flood Warning | DVN | Des Moines, Louisa | 40 days |
| Apr 11, 10:50 AM CDT | River Flood Warning | DVN | Lee | 49 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.