Alert archive / Nebraska / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 175
The Storm Prediction Center issued this severe thunderstorm watch at Apr 24, 2007, 1:48 PM CDT for 27 counties in Nebraska. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 24, 2007, 1:48 PM CDT (18:48 UTC)
- Expired
- Apr 24, 2007, 6:56 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 50 kt
All 27 counties
Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gage County, NE, Gosper County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Lancaster County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Phelps County, NE, Richardson County, NE, Saline County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 35 km from the middle of the area, began a volume at 18:50 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
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
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 |
|---|---|---|---|---|
| Apr 24, 1:53 PM CDT | Severe Thunderstorm Warning | OAX | Gage | 37 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 12:00Z, 6.8 hours before the alert went out and 183 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 665 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 235 m²/s²
- 0-3 km storm-relative helicity
- 538 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 9:53 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Chase, Clay, Dawson, Deuel and 17 more | 8 hr |
| Apr 23, 10:41 PM CDT | Tornado Watch | SPC | Dundy, Hitchcock, Red Willow | 5 hr |
| Apr 24, 1:37 AM CDT | Mesoscale Discussion | SPC | Chase, Dundy, Frontier, Furnas, Hayes, Hitchcock and 1 more | 83 min |
| Apr 24, 5:03 AM CDT | Mesoscale Discussion | SPC | Adams, Buffalo, Clay, Dawson, Franklin, Furnas and 8 more | 87 min |
| Apr 24, 1:35 PM CDT | Mesoscale Discussion | SPC | Adams, Buffalo, Butler, Cass, Clay, Custer and 34 more | 55 min |
| Apr 24, 2:48 PM CDT | Mesoscale Discussion | SPC | Chase, Dundy, Hitchcock | 117 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2007Every severe thunderstorm watch in 2007
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.