Alert archive / Iowa / Severe Thunderstorm Watches in 1998
Severe Thunderstorm Watch 792
The Storm Prediction Center issued this severe thunderstorm watch at Aug 24, 1998, 10:15 AM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 24, 1998, 10:15 AM CDT (15:15 UTC)
- Expired
- Aug 24, 1998, 4:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 61 counties
Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cedar County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Grundy County, IA, Howard County, IA, Jackson County, IA, Jones County, IA, Linn County, IA, Mitchell County, IA, Scott County, IA, Tama County, IA, Winneshiek County, IA, Boone County, IL, Carroll County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Jo Daviess County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Whiteside County, IL, Will County, IL, Winnebago County, IL, Fillmore County, MN, Houston County, MN, Mower County, MN, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, Lafayette County, WI, Milwaukee County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Vernon County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 10:16 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 64 min |
| Aug 24, 10:24 AM CDT | Tornado Warning | DMX | Black Hawk | 31 min |
| Aug 24, 10:35 AM CDT | Severe Thunderstorm Warning | DVN | Delaware | 65 min |
| Aug 24, 11:12 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 48 min |
| Aug 24, 11:39 AM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 46 min |
| Aug 24, 11:39 AM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 81 min |
| Aug 24, 12:05 PM CDT | Severe Thunderstorm Warning | DVN | Carroll | 35 min |
| Aug 24, 12:13 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 32 min |
| Aug 24, 12:16 PM CDT | Tornado Warning | DVN | Stephenson | 34 min |
| Aug 24, 12:19 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 51 min |
| Aug 24, 12:37 PM CDT | Tornado Warning | LOT | Ogle, Winnebago | 33 min |
| Aug 24, 12:44 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 55 min |
| Aug 24, 12:52 PM CDT | Tornado Warning | LOT | Boone, DeKalb | 53 min |
| Aug 24, 1:14 PM CDT | Severe Thunderstorm Warning | LOT | Kane, McHenry | 31 min |
| Aug 24, 1:28 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kendall, Will | 62 min |
| Aug 24, 1:28 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 62 min |
| Aug 24, 2:09 PM CDT | Severe Thunderstorm Warning | LOT | Will | 51 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 3.3 hours before the alert went out and 140 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
- 2161 J/kg
- Mixed-layer CIN
- -158 J/kg
- Mixed-layer LCL
- 1178 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 7:45 AM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee, Clay and 26 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 1998Severe Thunderstorm Watches in Wisconsin, 1998Severe Thunderstorm Watches in Illinois, 1998Every severe thunderstorm watch 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.