Alert archive / Iowa / Tornado Warnings in 2007
Tornado Warning 3, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Mar 31, 2007, 3:25 PM CDT for Iowa County, Keokuk County, Iowa. It was in force for 35 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
- Mar 31, 2007, 3:25 PM CDT (20:25 UTC)
- Expired
- Mar 31, 2007, 4:00 PM CDT
- In force
- 35 min
- Issued by
- NWS Quad Cities, IA
- Area
- Counties, with a storm outline in the text
Counties Iowa County, IA, Keokuk County, IA
The radar
The Des Moines radar (KDMX), 124 km from the middle of the area, began a volume at 20:27 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 |
|---|---|---|---|
| Mar 31, 3:35 PM CDT | HAIL 1 | Millersburg, IA | SHERIFFS DEPARTMENT RELAYED REPORT OF QUARTER SIZE HAIL IN MILLERSBURG. |
| Mar 31, 3:40 PM CDT | HAIL 0.25 | Ladora, IA | SHERIFFS DEPARTMENT RELAYED REPORT OF PEA SIZE HAIL IN LADORA. SPOTTER LSO REPORTED A WALL CLOUD SOUTH OF LADORA. |
| Mar 31, 3:43 PM CDT | TSTM WND DMG | 1 S Victor, IA | SEMI TRUCK BLOWN OVER ON I80 NEAR MILE MARKER 205 |
| Mar 31, 3:45 PM CDT | HAIL 1 | Ladora, IA | SPOTTER ALSO REPORTED STRONG WINDS AND HEAVY RAINS WITH THE STORM. |
| Mar 31, 3:49 PM CDT | HAIL 0.88 | Marengo, IA | ALSO REPORTED ESTIMATED 50 TO 60 MPH WINDS. |
| Mar 31, 3:55 PM CDT | HAIL 0.25 | Marengo, IA | OBSERVER ALSO REPORTED HEAVY RAIN AND STRONG WINDS. |
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 |
|---|---|---|---|
| Mar 31, 1:47 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 8.4 hours before the alert went out and 145 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
- 843 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 290 m²/s²
- 0-3 km storm-relative helicity
- 318 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KDVN 312025 TORDVN IAC095-107-312100- /O.NEW.KDVN.TO.W.0003.070331T2025Z-070331T2100Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 325 PM CDT SAT MAR 31 2007 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * TORNADO WARNING FOR... IOWA COUNTY IN EAST CENTRAL IOWA... KEOKUK COUNTY IN SOUTHEAST IOWA... * UNTIL 400 PM CDT. * AT 320 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR KESWICK...OR ABOUT 8 MILES NORTHWEST OF SIGOURNEY... MOVING NORTH AT 50 MPH. * THE TORNADO WILL BE NEAR... MILLERSBURG AROUND 330 PM CDT... 7 MILES EAST OF VICTOR AROUND 340 PM CDT... LADORA AND 8 MILES WEST OF CONROY AROUND 345 PM CDT... MARENGO AROUND 350 PM CDT... THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 206 AND 219. 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 900 PM CDT SATURDAY EVENING FOR EASTERN IOWA. LAT...LON 4145 9241 4139 9212 4185 9196 4186 9230 $$ DLF
1 follow-up statement
000 WWUS53 KDVN 312037 SVSDVN SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE QUAD CITIES IA IL 336 PM CDT SAT MAR 31 2007 IAC107-312046- /O.CAN.KDVN.TO.W.0003.000000T0000Z-070331T2100Z/ KEOKUK IA- 336 PM CDT SAT MAR 31 2007 ...THE TORNADO WARNING FOR KEOKUK COUNTY IS CANCELLED... THE SEVERE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING TORNADO MOVED OUT OF THE WARNED AREA. THEREFORE THE TORNADO WARNING HAS BEEN CANCELLED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SATURDAY EVENING FOR EASTERN IOWA. LAT...LON 4157 9231 4154 9205 4185 9196 4186 9230 $$ IAC095-312100- /O.CON.KDVN.TO.W.0003.000000T0000Z-070331T2100Z/ IOWA IA- 336 PM CDT SAT MAR 31 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR IOWA COUNTY... AT 333 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED APPROXIMATELY NEAR MILLERSBURG...OR ABOUT 16 MILES SOUTHWEST OF MARENGO...MOVING NORTH AT 50 MPH. THE TORNADO WILL BE NEAR... LADORA AND 7 MILES WEST OF MARENGO AROUND 345 PM CDT... KOSZTA AROUND 350 PM CDT... 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 900 PM CDT SATURDAY EVENING FOR EASTERN IOWA. LAT...LON 4157 9231 4154 9205 4185 9196 4186 9230 $$ DLF
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 2:44 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 46 min |
| Mar 31, 3:12 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 48 min |
| Mar 31, 3:20 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 25 min |
| Mar 31, 3:44 PM CDT | Severe Thunderstorm Warning | DVN | Henry | 31 min |
| Mar 31, 3:53 PM CDT | Tornado Warning | DVN | Benton | 52 min |
| Mar 31, 3:58 PM CDT | Flash Flood Warning | DVN | Benton, Buchanan | 3 hr |
| Mar 31, 4:06 PM CDT | Severe Thunderstorm Warning | DVN | Washington | 39 min |
| Mar 31, 4:34 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 26 min |
| Mar 31, 4:42 PM CDT | Severe Thunderstorm Warning | DVN | Johnson | 39 min |
| Mar 31, 4:45 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 30 min |
| Mar 31, 5:11 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 34 min |
| Mar 31, 5:19 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 43 min |
| Mar 31, 5:34 PM CDT | Tornado Warning | DVN | Muscatine, Scott | 26 min |
| Mar 31, 5:58 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 14 min |
| Mar 31, 6:00 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 30 min |
Nearby
Tornado Warnings in Iowa, 2007Every tornado warning in 2007Tornadoes 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.