Alert archive / Iowa / Tornado Warnings in 2002
Tornado Warning 11, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Jun 12, 2002, 6:11 PM CDT for Keokuk County, Iowa. It was in force for 34 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 12, 2002, 6:11 PM CDT (23:11 UTC)
- Expired
- Jun 12, 2002, 6:45 PM CDT
- In force
- 34 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Keokuk County, IA
The radar
The Des Moines radar (KDMX), 136 km from the middle of the area, began a volume at 23:12 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 12, 6:25 PM CDT | Tornado F0 | Keota, IA | A brief tornado touched down northwest of Keota. The tornado dissipated at 190th Street and County Road G32. No reports of damage or injuries were received. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.2 hours before the alert went out and 143 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
- 649 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 72 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 122311 TORMLI IAC107-122345- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 610 PM CDT WED JUN 12 2002 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN KEOKUK COUNTY IN SOUTHEAST IOWA * UNTIL 645 PM CDT * AT 604 PM CDT...DOPPLER RADAR AND SPOTTERS INDICATED A POSSIBLE TORNADO 3 MILES SOUTHEAST OF WEBSTER...OR 7 MILES NORTHEAST OF SIGOURNEY...MOVING EAST AT 10 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... HARPER BY 620 PM CDT. 5 MILES SOUTH OF KINROSS BY 630 PM CDT. KEOTA BY 640 PM CDT. 6 MILES NORTH OF TALLEYRAND BY 645 PM CDT. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT OR ON THE LOWEST FLOOR OF A BUILDING IN AN INTERIOR HALLWAY OR ROOM. REPORT ANY SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES. 33
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 12:22 PM CDT | Tornado Warning | DVN | Linn | 23 min |
| Jun 12, 12:44 PM CDT | Tornado Warning | DVN | Johnson, Linn | 31 min |
| Jun 12, 6:29 PM CDT | Tornado Warning | DVN | Washington | 31 min |
Nearby
Tornado Warnings in Iowa, 2002Every tornado warning in 2002Tornadoes in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.