Alert archive / Iowa / Tornado Warnings in 2008
Tornado Warning 13, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Apr 25, 2008, 3:34 PM CDT for 4 counties in Iowa. It was in force for 41 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
- Apr 25, 2008, 3:34 PM CDT (20:34 UTC)
- Expired
- Apr 25, 2008, 4:15 PM CDT
- In force
- 41 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
Counties Cedar County, IA, Clinton County, IA, Muscatine County, IA, Scott County, IA
The radar
The Quad Cities radar (KDVN), 33 km from the middle of the area, began a volume at 20:34 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 25, 3:37 PM CDT | TORNADO | 5 N Atalissa, IA | LIKELY TORNADO OBSERVED NORTHEAST OF EXIT NUMBER 265 ON I-80 /ATALISSA TRUCK STOP/. REPORTED BY IOWA STATE PATROL. |
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 25, 1:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 8.6 hours before the alert went out and 38 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
- 1215 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 678 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 204 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 7.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDVN 252034 TORDVN IAC031-045-139-163-252115- /O.NEW.KDVN.TO.W.0013.080425T2034Z-080425T2115Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 334 PM CDT FRI APR 25 2008 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN CEDAR COUNTY IN EAST CENTRAL IOWA... SOUTHWESTERN CLINTON COUNTY IN EAST CENTRAL IOWA... NORTH CENTRAL MUSCATINE COUNTY IN EAST CENTRAL IOWA... NORTHWESTERN SCOTT COUNTY IN EAST CENTRAL IOWA... * UNTIL 415 PM CDT. * AT 330 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR WILTON...OR 9 MILES SOUTH OF TIPTON...MOVING NORTHEAST AT 45 MPH. * THE TORNADO WILL BE NEAR... BENNETT AROUND 340 PM CDT... LOWDEN AROUND 350 PM CDT... WHEATLAND AND 6 MILES SOUTHEAST OF TORONTO AROUND 355 PM CDT... CALAMUS AROUND 400 PM CDT... GRAND MOUND AND 8 MILES SOUTHEAST OF LOST NATION AROUND 405 PM CDT... 9 MILES NORTHWEST OF DEWITT AROUND 410 PM CDT... THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 264 AND 277. HEAVY RAIN MAY OBSCURE THE APPROACH OF THE TORNADO. TAKE SHELTER NOW THIS STORM HAS ALREADY PRODUCED A TORNADO AND REMAINS A THREAT. LAT...LON 4200 9085 4185 9046 4157 9104 4164 9119 TIME...MOT...LOC 2034Z 227DEG 39KT 4167 9103 $$ ERVIN
2 follow-up statements
000
WWUS53 KDVN 252052
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
351 PM CDT FRI APR 25 2008
IAC139-252101-
/O.CAN.KDVN.TO.W.0013.000000T0000Z-080425T2115Z/
MUSCATINE IA-
351 PM CDT FRI APR 25 2008
...THE TORNADO WARNING FOR NORTH CENTRAL MUSCATINE COUNTY IS
CANCELLED...
THE SEVERE THUNDERSTORM THAT PRODUCED A TORNADO HAS MOVED OUT OF THE
WARNED AREA. THEREFORE THE TORNADO WARNING HAS BEEN CANCELLED.
HOWEVER...THIS STORM IS STILL CAPABLE OF PRODUCING HEAVY RAIN...AND
PEA SIZE HAIL.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FRIDAY EVENING FOR
EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM CDT
FRIDAY EVENING FOR EASTERN IOWA AND NORTHWESTERN ILLINOIS AND
NORTHEAST MISSOURI.
LAT...LON 4182 9053 4177 9063 4168 9080 4167 9084
4160 9097 4160 9100 4166 9111 4196 9082
4184 9050
TIME...MOT...LOC 2051Z 233DEG 27KT 4172 9090
$$
IAC031-045-163-252115-
/O.CON.KDVN.TO.W.0013.000000T0000Z-080425T2115Z/
CLINTON IA-CEDAR IA-SCOTT IA-
351 PM CDT FRI APR 25 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
NORTHWESTERN SCOTT...SOUTHEASTERN CEDAR AND SOUTHWESTERN CLINTON
COUNTIES...
AT 348 PM CDT...A RADAR INDICATED A POSSIBLE TORNADO. THIS TORNADO
WAS LOCATED APPROXIMATELY NEAR NEW LIBERTY...OR 12 MILES SOUTHEAST
OF TIPTON...MOVING NORTHEAST AT 31 MPH.
THE TORNADO WILL BE NEAR...
DIXON AND WHEATLAND AROUND 405 PM CDT...
CALAMUS AND 9 MILES SOUTHEAST OF TORONTO AROUND 410 PM CDT...
GRAND MOUND AND 8 MILES WEST OF DEWITT AROUND 415 PM CDT...
HEAVY RAIN MAY OBSCURE THE APPROACH OF THE TORNADO. TAKE SHELTER NOW
THIS STORM HAS ALREADY PRODUCED A TORNADO AND REMAINS A THREAT.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FRIDAY EVENING FOR
EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM CDT
FRIDAY EVENING FOR EASTERN IOWA AND NORTHWESTERN ILLINOIS AND
NORTHEAST MISSOURI.
LAT...LON 4182 9053 4177 9063 4168 9080 4167 9084
4160 9097 4160 9100 4166 9111 4196 9082
4184 9050
TIME...MOT...LOC 2051Z 233DEG 27KT 4172 9090
$$
ERVIN000
WWUS53 KDVN 252104
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
403 PM CDT FRI APR 25 2008
IAC031-252113-
/O.CAN.KDVN.TO.W.0013.000000T0000Z-080425T2115Z/
CEDAR IA-
403 PM CDT FRI APR 25 2008
...THE TORNADO WARNING FOR SOUTHEASTERN CEDAR COUNTY IS CANCELLED...
THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING A TORNADO HAS
MOVED OUT OF THE WARNED AREA. THEREFORE THE TORNADO WARNING HAS BEEN
CANCELLED.
HOWEVER...THIS STORM IS STILL CAPABLE OF PRODUCING HEAVY RAIN.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FRIDAY EVENING FOR
EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM CDT
FRIDAY EVENING FOR SOUTHEASTERN IOWA AND NORTHEAST MISSOURI.
LAT...LON 4177 9063 4170 9081 4175 9089 4195 9079
4187 9059 4187 9057 4186 9056 4186 9055
4184 9051
TIME...MOT...LOC 2103Z 232DEG 27KT 4180 9077
$$
IAC045-163-252115-
/O.CON.KDVN.TO.W.0013.000000T0000Z-080425T2115Z/
CLINTON IA-SCOTT IA-
403 PM CDT FRI APR 25 2008
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM CDT FOR
NORTHWESTERN SCOTT AND SOUTHWESTERN CLINTON COUNTIES...
AT 402 PM CDT...RADAR INDICATED A TORNADO. THIS TORNADO WAS LOCATED
APPROXIMATELY NEAR CALAMUS...OR 18 MILES EAST OF TIPTON...MOVING
NORTHEAST AT 31 MPH.
THE TORNADO WILL BE NEAR...
GRAND MOUND AND 7 MILES WEST OF DEWITT AROUND 415 PM CDT...
THIS STORM HAS ALREADY PRODUCED A TORNADO AND REMAINS A THREAT.
PLEASE REPORT ANY SEVERE WEATHER OR DAMAGE TO YOUR LOCAL LAW
ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FRIDAY EVENING FOR
EASTERN IOWA AND NORTHWESTERN ILLINOIS AND NORTHEAST MISSOURI.
A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM CDT
FRIDAY EVENING FOR SOUTHEASTERN IOWA AND NORTHEAST MISSOURI.
LAT...LON 4177 9063 4170 9081 4175 9089 4195 9079
4187 9059 4187 9057 4186 9056 4186 9055
4184 9051
TIME...MOT...LOC 2103Z 232DEG 27KT 4180 9077
$$
ERVINThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 8:40 PM CDT | River Flood Warning | DVN | Johnson, Washington | 4 days |
| Apr 24, 8:40 PM CDT | River Flood Warning | DVN | Keokuk | 5 days |
| Apr 24, 8:40 PM CDT | River Flood Warning | DVN | Des Moines, Henry, Lee | 18 hr |
| Apr 24, 9:24 PM CDT | River Flood Warning | DVN | Dubuque, Jackson | 6 days |
| Apr 24, 9:24 PM CDT | River Flood Warning | DVN | Dubuque, Jackson | 11 days |
| Apr 24, 9:24 PM CDT | River Flood Warning | DVN | Clinton, Scott | 11 days |
| Apr 24, 9:24 PM CDT | River Flood Warning | DVN | Muscatine, Scott | 12 days |
| Apr 25, 5:01 AM CDT | River Flood Warning | DVN | Buchanan, Linn | 4 days |
| Apr 25, 5:01 AM CDT | River Flood Warning | DVN | Delaware, Jones | 34 hr |
| Apr 25, 5:01 AM CDT | River Flood Warning | DVN | Jackson | 3 days |
| Apr 25, 5:56 AM CDT | Flash Flood Warning | DVN | Buchanan, Delaware, Dubuque | 6 hr |
| Apr 25, 6:55 AM CDT | River Flood Warning | DVN | Benton, Linn | 4 days |
| Apr 25, 6:55 AM CDT | River Flood Warning | DVN | Cedar, Johnson, Linn | 6 days |
| Apr 25, 6:55 AM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 5 hr |
| Apr 25, 7:11 AM CDT | Flash Flood Warning | DVN | Benton, Iowa, Johnson, Keokuk, Linn | 6 hr |
| Apr 25, 7:30 AM CDT | Severe Thunderstorm Warning | DVN | Jones | 30 min |
| Apr 25, 7:47 AM CDT | Severe Thunderstorm Warning | DVN | Jackson | 13 min |
| Apr 25, 7:51 AM CDT | Flash Flood Warning | DVN | Cedar, Dubuque, Jackson, Jones | 6 hr |
| Apr 25, 12:02 PM CDT | River Flood Warning | DVN | Jackson | 5 days |
| Apr 25, 1:42 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Dubuque, Linn | 63 min |
| Apr 25, 2:26 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones, Linn | 39 min |
| Apr 25, 2:31 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Henry, Johnson, Keokuk, Louisa, Muscatine and 1 more | 59 min |
| Apr 25, 2:47 PM CDT | River Flood Warning | DVN | Johnson, Louisa, Washington | 4 days |
| Apr 25, 2:51 PM CDT | Tornado Warning | DVN | Henry, Jefferson, Louisa, Washington | 39 min |
| Apr 25, 2:54 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 47 min |
| Apr 25, 3:01 PM CDT | Tornado Warning | DVN | Cedar, Johnson, Louisa, Muscatine, Washington | 44 min |
| Apr 25, 3:25 PM CDT | Tornado Warning | DVN | Louisa, Muscatine | 65 min |
| Apr 25, 3:41 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 64 min |
| Apr 25, 4:07 PM CDT | Tornado Warning | DVN | Clinton, Jackson | 38 min |
| Apr 25, 4:19 PM CDT | Tornado Warning | DVN | Muscatine, Scott | 41 min |
| Apr 25, 4:27 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 63 min |
| Apr 25, 5:36 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 24 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.