Alert archive / Nebraska / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 246
The Storm Prediction Center issued this severe thunderstorm watch at May 22, 2004, 12:55 AM CDT for 23 counties in Iowa; 37 counties in Nebraska. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 22, 2004, 12:55 AM CDT (05:55 UTC)
- Expired
- May 22, 2004, 6:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 60 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Dallas County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Madison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Webster County, IA, Adams County, NE, Boone County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Johnson County, NE, Kearney County, NE, Lancaster County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Otoe County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Valley County, NE, Washington County, NE, Webster County, NE, York County, NE
The radar
The Omaha radar (KOAX), 56 km from the middle of the area, began a volume at 05:55 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 1:06 AM CDT | Severe Thunderstorm Warning | GID | Nance | 54 min |
| May 22, 1:14 AM CDT | Flash Flood Warning | OAX | Boone, Madison, Platte, Stanton | 6 hr |
| May 22, 1:30 AM CDT | Severe Thunderstorm Warning | GID | Greeley | 45 min |
| May 22, 1:38 AM CDT | Severe Thunderstorm Warning | OAX | Boone | 37 min |
| May 22, 2:16 AM CDT | Severe Thunderstorm Warning | OAX | Platte | 44 min |
| May 22, 2:49 AM CDT | Severe Thunderstorm Warning | OAX | Colfax, Dodge | 41 min |
| May 22, 3:23 AM CDT | Severe Thunderstorm Warning | OAX | Washington | 37 min |
| May 22, 3:51 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 49 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 5.9 hours before the alert went out and 56 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
- 2589 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1462 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 6.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:37 PM CDT | Mesoscale Discussion | SPC | Audubon, Benton, Black Hawk, Boone, Bremer, Buchanan and 48 more | 83 min |
| May 21, 9:55 PM CDT | Tornado Watch | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 14 more | 4 hr |
| May 22, 12:05 AM CDT | Severe Thunderstorm Watch | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Cedar and 26 more | 6 hr |
| May 22, 12:25 AM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 14 more | 2 hr |
| May 22, 2:41 AM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Buchanan, Cedar, Clayton, Clinton and 24 more | 94 min |
| May 22, 3:44 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Cass, Dallas and 11 more | 61 min |
| May 22, 6:58 AM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Decatur, Des Moines, Henry, Jefferson and 6 more | 62 min |
| May 22, 3:02 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 29 more | 58 min |
| May 22, 3:45 PM CDT | Tornado Watch | SPC | Fremont, Harrison, Mills, Pottawattamie, Shelby | 7 hr |
| May 22, 5:52 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Benton, Black Hawk, Boone and 53 more | 113 min |
| May 22, 6:15 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Benton, Boone and 47 more | 6 hr |
| May 21, 7:40 PM CDT | Tornado Watch | SPC | Adams, Antelope, Boone, Boyd, Buffalo, Butler and 33 more | 5 hr |
| May 21, 10:01 PM CDT | Mesoscale Discussion | SPC | Adams, Antelope, Boone, Boyd, Buffalo, Butler and 33 more | 89 min |
| May 22, 1:13 PM CDT | Mesoscale Discussion | SPC | Banner, Chase, Cheyenne, Deuel, Dundy, Keith and 2 more | 2 hr |
| May 22, 2:00 PM CDT | Tornado Watch | SPC | Arthur, Banner, Chase, Cheyenne, Deuel, Dundy and 12 more | 6 hr |
| May 22, 3:04 PM CDT | Mesoscale Discussion | SPC | Banner, Chase, Cheyenne, Deuel, Dundy, Keith and 2 more | 86 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2004Severe Thunderstorm Watches in Iowa, 2004Every severe thunderstorm watch in 2004
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.