Alert archive / Iowa / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 92
The Storm Prediction Center issued this severe thunderstorm watch at Apr 5, 2001, 12:00 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2001, 12:00 PM CDT (17:00 UTC)
- Expired
- Apr 5, 2001, 5:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 44 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Cass County, IA, Dallas County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Madison County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Marshall County, KS, Morris County, KS, Nemaha County, KS, Pottawatomie County, KS, Riley County, KS, Wabaunsee County, KS, Andrew County, MO, Atchison County, MO, Gentry County, MO, Harrison County, MO, Holt County, MO, Nodaway County, MO, Worth County, MO, Cass County, NE, Gage County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Sarpy County, NE
The radar
The Omaha radar (KOAX), 98 km from the middle of the area, began a volume at 16:59 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 12:09 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 36 min |
| Apr 5, 12:13 PM CDT | Severe Thunderstorm Warning | OAX | Nemaha, Pawnee, Richardson | 32 min |
| Apr 5, 12:29 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 31 min |
| Apr 5, 12:57 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page, Pottawattamie | 33 min |
| Apr 5, 1:14 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 31 min |
| Apr 5, 1:14 PM CDT | Severe Thunderstorm Warning | EAX | Atchison | 46 min |
| Apr 5, 1:29 PM CDT | Severe Thunderstorm Warning | DMX | Adams | 31 min |
| Apr 5, 1:39 PM CDT | Severe Thunderstorm Warning | OAX | Page | 36 min |
| Apr 5, 3:07 PM CDT | Severe Thunderstorm Warning | EAX | Nodaway, Worth | 38 min |
| Apr 5, 3:30 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 45 min |
| Apr 5, 3:41 PM CDT | Severe Thunderstorm Warning | EAX | Harrison | 49 min |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 5.0 hours before the alert went out and 98 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 444 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 229 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
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 |
|---|---|---|---|---|
| Apr 5, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Benton, Black Hawk, Buchanan and 37 more | 6 hr |
| Apr 5, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Davis, Lee, Van Buren | 5 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 2001Severe Thunderstorm Watches in Kansas, 2001Severe Thunderstorm Watches in Nebraska, 2001Every severe thunderstorm watch in 2001
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.