Alert archive / Iowa / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 12, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Mar 30, 1998, 2:18 PM CST for Buchanan County, Iowa. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 30, 1998, 2:18 PM CST (20:18 UTC)
- Expired
- Mar 30, 1998, 2:50 PM CST
- In force
- 32 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Buchanan County, IA
The radar
The Quad Cities radar (KDVN), 141 km from the middle of the area, began a volume at 20:18 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, 8.3 hours before the alert went out and 145 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
- 1173 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 828 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 268 m²/s²
- 0-3 km storm-relative helicity
- 302 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 8.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 30, 2:17 AM CST, 12 hours 1 minute earlier.
Area forecast discussion, Mar 30, 2:17 AM CST, 12 hours 1 minute before
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</html>In the hours before
Special weather statement, Mar 30, 12:29 PM CST, 1 hour 49 minutes before
SIGNIFICANT WEATHER OUTLOOK FOR EASTERN IOWA AND NORTHWEST ILLINOIS NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1229 PM CST MON MAR 30 1998 ...SEVERE STORMS POSSIBLE TODAY AND TONIGHT OVER EASTERN IOWA AND NORTHWEST ILLINOIS... AS A COLD FRONT PUSHES THROUGH EASTERN IOWA AND NORTHWEST ILLINOIS THIS EVENING AND OVERNIGHT... LOOK FOR AN OPPORTUNITY FOR SEVERE WEATHER. THE BEST CHANCE FOR SEVERE WEATHER WILL BE ACROSS MISSOURI AND CENTRAL ILLINOIS...HOWEVER EASTERN IOWA AND NORTHWEST ILLINOIS REMAIN IN THE THREAT AREA. THUNDERSTORMS WILL DEVELOP AS MUCH DRIER AND COOLER AIR BEHIND THE FRONT CLASHES WITH WARM...MOIST AIR AHEAD OF IT. A STRONG UPPER LEVEL JET MOVING OUT OF CENTRAL TEXAS WILL HELP ENHANCE THE SEVERE THREAT. THE BEST CHANCE FOR SEVERE WEATHER WILL BE FROM ABOUT 5PM TO MIDNIGHT. SEVERE WEATHER WATCHES MAY BE POSTED THIS AFTERNOON AND/OR TONIGHT FOR EASTERN IOWA AND NORTHWEST ILLINOIS. STAY TUNED TO LATER FORECASTS AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES. WEISSER
Special weather statement, Mar 30, 12:29 PM CST, 1 hour 49 minutes before
SIGNIFICANT WEATHER OUTLOOK FOR EASTERN IOWA AND NORTHWEST ILLINOIS NATIONAL WEATHER SERVICE QUAD CITIES IA IL 1229 PM CST MON MAR 30 1998 ...SEVERE STORMS POSSIBLE TODAY AND TONIGHT OVER EASTERN IOWA AND NORTHWEST ILLINOIS... AS A COLD FRONT PUSHES THROUGH EASTERN IOWA AND NORTHWEST ILLINOIS THIS EVENING AND OVERNIGHT... LOOK FOR AN OPPORTUNITY FOR SEVERE WEATHER. THE BEST CHANCE FOR SEVERE WEATHER WILL BE ACROSS MISSOURI AND CENTRAL ILLINOIS...HOWEVER EASTERN IOWA AND NORTHWEST ILLINOIS REMAIN IN THE THREAT AREA. THUNDERSTORMS WILL DEVELOP AS MUCH DRIER AND COOLER AIR BEHIND THE FRONT CLASHES WITH WARM...MOIST AIR AHEAD OF IT. A STRONG UPPER LEVEL JET MOVING OUT OF CENTRAL TEXAS WILL HELP ENHANCE THE SEVERE THREAT. THE BEST CHANCE FOR SEVERE WEATHER WILL BE FROM ABOUT 5PM TO MIDNIGHT. SEVERE WEATHER WATCHES MAY BE POSTED THIS AFTERNOON AND/OR TONIGHT FOR EASTERN IOWA AND NORTHWEST ILLINOIS. STAY TUNED TO LATER FORECASTS AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES. WEISSER
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 1:56 PM CST | Severe Thunderstorm Warning | DVN | Benton | 34 min |
| Mar 30, 2:42 PM CST | Severe Thunderstorm Warning | DVN | Delaware | 28 min |
| Mar 30, 3:01 PM CST | Severe Thunderstorm Warning | DVN | Dubuque | 29 min |
| Mar 30, 4:26 PM CST | Severe Thunderstorm Warning | DVN | Benton, Iowa | 29 min |
| Mar 30, 4:59 PM CST | Severe Thunderstorm Warning | DVN | Benton, Linn | 46 min |
| Mar 30, 5:15 PM CST | Severe Thunderstorm Warning | DVN | Keokuk | 45 min |
| Mar 30, 5:41 PM CST | Severe Thunderstorm Warning | DVN | Iowa, Johnson | 49 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1998Every severe thunderstorm warning in 1998
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.