Alert archive / Iowa / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 738
The Storm Prediction Center issued this severe thunderstorm watch at Sep 14, 2000, 12:15 AM CDT for 23 counties in Iowa. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 14, 2000, 12:15 AM CDT (05:15 UTC)
- Expired
- Sep 14, 2000, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 23 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Greene County, IA, Guthrie County, IA, Lucas County, IA, Madison County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Ringgold County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Wayne County, IA
The radar
The Des Moines radar (KDMX), 82 km from the middle of the area, began a volume at 05:14 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
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 14, 1:10 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 35 min |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 5.3 hours before the alert went out and 143 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
- 981 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 2594 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 190 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 |
|---|---|---|---|---|
| Sep 13, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Benton, Black Hawk, Boone, Bremer, Buchanan and 41 more | 5 hr |
| Sep 14, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Appanoose, Davis, Des Moines, Henry, Iowa, Jefferson and 11 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 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.