Alert archive / Iowa / Severe Thunderstorm Watches in 2000
Severe Thunderstorm Watch 466
The Storm Prediction Center issued this severe thunderstorm watch at Jun 20, 2000, 12:30 AM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2000, 12:30 AM CDT (05:30 UTC)
- Expired
- Jun 20, 2000, 6:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 46 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Cass County, IA, Dallas County, IA, Fremont County, IA, Guthrie County, IA, Harrison 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, Marshall County, KS, Nemaha County, KS, Republic County, KS, Washington County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Holt County, MO, Nodaway County, MO, Worth County, MO, Burt County, NE, Cass County, NE, Dodge County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Washington County, NE
Warnings issued inside it
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 12:47 AM CDT | Severe Thunderstorm Warning | OAX | Cass, Otoe | 43 min |
| Jun 20, 2:02 AM CDT | Severe Thunderstorm Warning | TOP | Brown, Jackson, Nemaha | 58 min |
| Jun 20, 2:11 AM CDT | Severe Thunderstorm Warning | OAX | Richardson | 34 min |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 5.5 hours before the alert went out and 95 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
- 468 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 988 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.1
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 |
|---|---|---|---|---|
| Jun 19, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Plymouth | 5 hr |
| Jun 20, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | Lee | 6 hr |
| Jun 20, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Coffey, Doniphan, Douglas, Franklin and 12 more | 7 hr |
| Jun 20, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Barber, Butler, Chase, Coffey, Comanche, Cowley and 16 more | 6 hr |
| Jun 20, 6:45 PM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford, Linn | 4 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 2000Severe Thunderstorm Watches in Nebraska, 2000Severe Thunderstorm Watches in Kansas, 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.