Alert archive / Nebraska / Severe Thunderstorm Watches in 2009
Severe Thunderstorm Watch 474
The Storm Prediction Center issued this severe thunderstorm watch at Jun 18, 2009, 11:55 PM CDT for 47 counties in Nebraska. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2009, 11:55 PM CDT (04:55 UTC)
- Expired
- Jun 19, 2009, 3:49 AM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 47 counties
Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Butler County, NE, Chase County, NE, Cherry County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Fillmore County, NE, Frontier County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Hayes County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keith County, NE, Keya Paha County, NE, Knox County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Perkins County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE, York County, NE
The radar
The North Platte radar (KLNX), 23 km from the middle of the area, began a volume at 04:56 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 12:08 AM CDT | Severe Thunderstorm Warning | LBF | Brown, Rock | 37 min |
| Jun 19, 12:14 AM CDT | Severe Thunderstorm Warning | GID | Buffalo, Hall, Howard | 46 min |
| Jun 19, 12:14 AM CDT | Severe Thunderstorm Warning | LBF | Chase, Perkins | 46 min |
| Jun 19, 12:22 AM CDT | Severe Thunderstorm Warning | GID | Buffalo, Dawson, Kearney, Phelps | 38 min |
| Jun 19, 12:25 AM CDT | Severe Thunderstorm Warning | LBF | Frontier | 50 min |
| Jun 19, 12:54 AM CDT | Severe Thunderstorm Warning | GID | Hall, Hamilton, Howard, Merrick, Polk, York | 51 min |
| Jun 19, 12:57 AM CDT | Severe Thunderstorm Warning | GID | Adams, Buffalo, Hall, Kearney, Phelps | 48 min |
| Jun 19, 12:58 AM CDT | Severe Thunderstorm Warning | LBF | Lincoln, Perkins | 47 min |
| Jun 19, 1:08 AM CDT | Severe Thunderstorm Warning | LBF | Frontier | 37 min |
| Jun 19, 1:23 AM CDT | Severe Thunderstorm Warning | GID | Dawson, Gosper, Phelps | 52 min |
| Jun 19, 1:28 AM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 47 min |
| Jun 19, 1:35 AM CDT | Severe Thunderstorm Warning | GID | Adams, Clay, Hall, Hamilton | 40 min |
| Jun 19, 1:42 AM CDT | Severe Thunderstorm Warning | GID | Hamilton, Merrick, Polk, York | 47 min |
| Jun 19, 1:43 AM CDT | Severe Thunderstorm Warning | LBF | Frontier | 32 min |
| Jun 19, 1:51 AM CDT | Flash Flood Warning | GID | Hall | 6 hr |
| Jun 19, 1:58 AM CDT | Severe Thunderstorm Warning | OAX | Butler, Colfax, Platte, Saunders | 62 min |
| Jun 19, 2:08 AM CDT | Severe Thunderstorm Warning | GID | Clay, Fillmore, Hamilton, York | 37 min |
| Jun 19, 3:11 AM CDT | Flash Flood Warning | GID | Hamilton, Merrick, Polk | 6 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 11:12 PM CDT | Mesoscale Discussion | SPC | Adams, Antelope, Arthur, Blaine, Boone, Brown and 46 more | 93 min |
| Jun 19, 1:33 AM CDT | Mesoscale Discussion | SPC | Burt, Cass, Cuming, Dodge, Douglas, Lancaster and 5 more | 57 min |
| Jun 19, 2:13 AM CDT | Severe Thunderstorm Watch | SPC | Burt, Butler, Cass, Colfax, Cuming, Dodge and 13 more | 8 hr |
| Jun 19, 5:01 AM CDT | Mesoscale Discussion | SPC | Cass, Douglas, Lancaster, Sarpy | 59 min |
| Jun 19, 12:37 PM CDT | Mesoscale Discussion | SPC | Nemaha, Richardson | 83 min |
| Jun 19, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | Johnson, Nemaha, Otoe, Pawnee, Richardson | 4 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2009Every severe thunderstorm watch in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.