Alert archive / Iowa / Tornado Warnings in 2002
Tornado Warning 8, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at May 30, 2002, 8:05 PM CDT for Cedar County, Jones County, Linn County, Iowa. It was in force for 65 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
- May 30, 2002, 8:05 PM CDT (01:05 UTC)
- Expired
- May 30, 2002, 9:10 PM CDT
- In force
- 65 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
Counties Cedar County, IA, Jones County, IA, Linn County, IA
The radar
The Quad Cities radar (KDVN), 72 km from the middle of the area, began a volume at 01:07 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 30, 8:45 PM CDT | Hail 1 | Buchanan, IA |
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 00:00Z, 1.1 hours before the alert went out and 77 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
- 1284 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1473 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
646 WFUS53 KDVN 310105 TORMLI IAC031-105-113-310210- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 804 PM CDT THU MAY 30 2002 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * TORNADO WARNING FOR... CEDAR COUNTY IN EAST CENTRAL IOWA SOUTHERN JONES COUNTY IN EAST CENTRAL IOWA SOUTHEASTERN LINN COUNTY IN EAST CENTRAL IOWA * UNTIL 910 PM CDT * AT 802 PM CDT...DOPPLER RADAR AND SPOTTERS INDICATED A POSSIBLE TORNADO 4 MILES NORTH OF MOUNT VERNON...OR 12 MILES EAST OF CEDAR RAPIDS...MOVING SOUTHEAST AT 20 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... MOUNT VERNON BY 810 PM CDT. LISBON BY 815 PM CDT. MECHANICSVILLE BY 830 PM CDT. BUCHANAN BY 855 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. DAMAGING WINDS AND LARGE HAIL ARE ALSO LIKELY WITH THIS DANGEROUS STORM JDH
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 7:19 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 46 min |
| May 30, 8:22 PM CDT | Severe Thunderstorm Warning | DVN | Johnson | 23 min |
| May 30, 8:58 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 32 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.