Alert archive / Iowa / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 561
The Storm Prediction Center issued this severe thunderstorm watch at Jul 9, 2000, 10:00 PM CDT for 24 counties in Iowa; 19 counties in Nebraska; Union County, South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2000, 10:00 PM CDT (03:00 UTC)
- Expired
- Jul 10, 2000, 3:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 44 counties
Audubon County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Greene County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Monona County, IA, O'Brien County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Webster County, IA, Woodbury County, IA, Burt County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Madison County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Saunders County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, York County, NE, Union County, SD
The radar
The Omaha radar (KOAX), 110 km from the middle of the area, began a volume at 03:01 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.
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 10:14 PM CDT | Tornado Warning | FSD | O'Brien, Osceola | 31 min |
| Jul 9, 10:18 PM CDT | Flash Flood Warning | FSD | Dickinson | 87 min |
| Jul 9, 10:24 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 36 min |
| Jul 9, 10:39 PM CDT | Flash Flood Warning | FSD | Clay, O'Brien | 96 min |
| Jul 9, 10:44 PM CDT | Flash Flood Warning | DMX | Emmet | 18 hr |
| Jul 9, 11:05 PM CDT | Flash Flood Warning | DMX | Palo Alto | 15 hr |
| Jul 9, 11:30 PM CDT | Flash Flood Warning | DMX | Kossuth | 15 hr |
| Jul 9, 11:48 PM CDT | Flash Flood Warning | DMX | Humboldt | 15 hr |
| Jul 10, 1:34 AM CDT | Severe Thunderstorm Warning | OAX | Cedar, Wayne | 41 min |
| Jul 10, 1:44 AM CDT | Flash Flood Warning | DMX | Emmet, Humboldt, Kossuth, Palo Alto | 15 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.0 hours before the alert went out and 358 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
- 3029 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Jul 9, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Butler and 21 more | 6 hr |
| Jul 10, 2:30 AM CDT | Severe Thunderstorm Watch | SPC | Clinton, Jackson | 6 hr |
| Jul 10, 5:00 PM CDT | Severe Thunderstorm Watch | SPC | Harding | 6 hr |
| Jul 10, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Bennett, Butte, Custer, Fall River, Haakon, Jackson and 5 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 2000Severe Thunderstorm Watches in Nebraska, 2000Severe Thunderstorm Watches in South Dakota, 2000Every severe thunderstorm watch 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.