Alert archive / Iowa / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 21, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at May 8, 2000, 7:00 AM CDT for Johnson County, Iowa. It was in force for 20 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- May 8, 2000, 7:00 AM CDT (12:00 UTC)
- Expired
- May 8, 2000, 7:20 AM CDT
- In force
- 20 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Johnson County, IA
The radar
The Quad Cities radar (KDVN), 77 km from the middle of the area, began a volume at 12:01 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.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 0.0 hours before the alert went out and 84 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
- 862 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDVN 081203 SVRMLI IAC103-081215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE QUAD CITIES IA IL 700 AM CDT MON MAY 8 2000 THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN JOHNSON COUNTY IN EAST CENTRAL IOWA * UNTIL 720 AM CDT * AT 655 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS NEAR IOWA CITY MUNICIPAL AIRPORT...OR 4 MILES SOUTH OF IOWA CITY...MOVING EAST AT 45 MPH. * THE SEVERE THUNDERSTORM IS EXPECTED TO BE NEAR... OASIS AND MORSE BY 715 AM CDT. THIS SEVERE THUNDERSTORM IS CAPABLE OF WINDS IN EXCESS OF 60 MPH AND PEA SIZED HAIL. TAKE COVER IN A STURDY STRUCTURE UNTIL THE STORM PASSES. LAT...LON 4180 9158 4152 9160 4153 9136 4180 9139 CROSBIE
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 5:55 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa | 35 min |
| May 8, 6:23 AM CDT | Severe Thunderstorm Warning | DVN | Johnson, Linn | 37 min |
| May 8, 6:32 AM CDT | Severe Thunderstorm Warning | DVN | Iowa | 18 min |
| May 8, 6:55 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones | 50 min |
| May 8, 6:55 AM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 50 min |
| May 8, 7:09 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 51 min |
| May 8, 7:36 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 54 min |
| May 8, 7:41 AM CDT | Flash Flood Warning | DVN | Dubuque | 3 hr |
Nearby
Severe Thunderstorm Warnings in Iowa, 2000Every severe thunderstorm warning in 2000
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.