Alert archive / Iowa / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 21, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at May 7, 2004, 11:43 AM CDT for Jones County, Iowa. It was in force for 32 min. 2 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
- May 7, 2004, 11:43 AM CDT (16:43 UTC)
- Expired
- May 7, 2004, 12:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Quad Cities, IA
- Area
- Counties, with a storm outline in the text
County Jones County, IA
The radar
The Quad Cities radar (KDVN), 74 km from the middle of the area, began a volume at 16:42 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 7, 11:54 AM CDT | HAIL 1 | Anamosa, IA | |
| May 7, 11:55 AM CDT | HAIL 0.88 | 1 S Anamosa, IA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 4.7 hours before the alert went out and 78 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
- 915 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
597 WUUS53 KDVN 071643 SVRDVN IAC105-071715- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1143 AM CDT FRI MAY 7 2004 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL JONES COUNTY IN EAST CENTRAL IOWA * UNTIL 1215 PM CDT * AT 1137 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 7 MILES WEST OF ANAMOSA...AND MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ANAMOSA BY 1150 AM CDT MORLEY BY 1155 AM CDT 6 MILES NORTH OF OLIN BY 1205 PM CDT CENTER JUNCTION BY 1210 PM CDT ONSLOW AND WYOMING BY 1215 PM CDT THIS IS A DANGEROUS STORM. MOVE IMMEDIATELY INDOORS AND STAY AWAY FROM WINDOWS. LAT...LON 4217 9135 4200 9134 4198 9091 4221 9092 $$ NICHOLS
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 1:56 AM CDT | Severe Thunderstorm Warning | DVN | Benton | 64 min |
| May 7, 2:33 AM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 57 min |
| May 7, 3:49 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine, Scott | 26 min |
| May 7, 4:15 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 30 min |
| May 7, 6:54 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson | 36 min |
| May 7, 8:13 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 47 min |
| May 7, 10:35 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson | 55 min |
| May 7, 11:04 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 56 min |
| May 7, 4:21 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 54 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 2004Every severe thunderstorm warning in 2004
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.