Alert archive / Iowa / Tornado Warnings in 2007
Tornado Warning 15, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Jun 7, 2007, 2:41 PM CDT for Iowa County, Iowa. It was in force for 32 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
- Jun 7, 2007, 2:41 PM CDT (19:41 UTC)
- Expired
- Jun 7, 2007, 3:13 PM CDT
- In force
- 32 min
- Issued by
- NWS Quad Cities, IA
- Area
- Counties, with a storm outline in the text
County Iowa County, IA
The radar
The Quad Cities radar (KDVN), 122 km from the middle of the area, began a volume at 19:43 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 7, 3:09 PM CDT | TSTM WND GST 60 | Amana, IA |
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 7, 11:34 AM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 7.7 hours before the alert went out and 129 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
- 44 J/kg
- Mixed-layer CIN
- -791 J/kg
- Mixed-layer LCL
- 1362 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 372 m²/s²
- 0-3 km storm-relative helicity
- 374 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 KDVN 071941
TORDVN
IAC095-072015-
/O.NEW.KDVN.TO.W.0015.070607T1941Z-070607T2015Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
241 PM CDT THU JUN 7 2007
THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A
* TORNADO WARNING FOR...
IOWA COUNTY IN EAST CENTRAL IOWA...
* UNTIL 315 PM CDT.
* AT 239 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
TORNADO NEAR MILLERSBURG...OR ABOUT 12 MILES NORTH OF SIGOURNEY...
MOVING NORTHEAST AT 60 MPH.
* THE TORNADO WILL BE NEAR...
PARNELL AND WILLIAMSBURG AROUND 250 PM CDT...
8 MILES SOUTHEAST OF CONROY AROUND 255 PM CDT...
7 MILES SOUTHEAST OF AMANA AROUND 305 PM CDT...
THIS INCLUDES INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 215 AND 228.
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 1000 PM CDT THURSDAY EVENING
FOR EASTERN IOWA.
LAT...LON 4151 9228 4150 9209 4153 9185 4184 9183
4182 9199
$$
ERVIN1 follow-up statement
000
WWUS53 KDVN 072013
SVSDVN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
311 PM CDT THU JUN 7 2007
IAC095-072021-
/O.CAN.KDVN.TO.W.0015.000000T0000Z-070607T2015Z/
IOWA IA-
311 PM CDT THU JUN 7 2007
...THE TORNADO WARNING FOR IOWA COUNTY IS CANCELLED...
THE THUNDERSTORM THAT WAS CAPABLE OF PRODUCING TORNADO HAS MOVED OUT
OF THE WARNED AREA. THEREFORE THE TORNADO WARNING HAS BEEN CANCELLED.
HOWEVER...OTHER THUNDERSTORMS WILL BE MOVING THROUGH IOWA COUNTY BY
4 PM. THESE STORMS WILL HAVE THE POTENTIAL OF BECOMING SEVERE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT THURSDAY EVENING
FOR EASTERN IOWA.
LAT...LON 4151 9228 4150 9209 4153 9185 4184 9183
4182 9199
$$
ERVINThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 2:19 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk | 41 min |
| Jun 7, 2:48 PM CDT | Tornado Warning | DVN | Johnson, Linn | 57 min |
| Jun 7, 3:42 PM CDT | Tornado Warning | DVN | Jones | 48 min |
| Jun 7, 4:32 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson | 43 min |
| Jun 7, 4:45 PM CDT | Tornado Warning | DVN | Cedar, Johnson | 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.