Alert archive / Nebraska / Severe Thunderstorm Watches in 2024
Severe Thunderstorm Watch 621
The Storm Prediction Center issued this severe thunderstorm watch at Aug 13, 2024, 11:33 PM CDT for 16 counties in Nebraska. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 13, 2024, 11:33 PM CDT (04:33 UTC)
- Expired
- Aug 14, 2024, 2:09 AM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Adams County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Phelps County, NE, Sherman County, NE, Valley County, NE, Webster County, NE
The radar
The Grand Island radar (KUEX), 100 km from the middle of the area, began a volume at 04:32 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 50%
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 11:54 PM CDT | Severe Thunderstorm Warning | GID | Buffalo, Dawson, Furnas, Gosper, Harlan, Phelps | 51 min |
| Aug 14, 12:34 AM CDT | Severe Thunderstorm Warning | GID | Adams, Buffalo, Franklin, Hall, Harlan, Kearney and 2 more | 41 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.6 hours before the alert went out and 103 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
- 608 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 8:18 PM CDT | Mesoscale Discussion | SPC | Chase, Deuel, Dundy, Frontier, Hayes, Hitchcock and 4 more | 87 min |
| Aug 13, 10:00 PM CDT | Mesoscale Discussion | SPC | Adams, Buffalo, Clay, Custer, Dawson, Franklin and 15 more | 2 hr |
| Aug 14, 1:05 AM CDT | Mesoscale Discussion | SPC | Adams, Clay, Fillmore, Hall, Hamilton, Kearney and 1 more | 55 min |
| Aug 14, 3:57 PM CDT | Mesoscale Discussion | SPC | Butler, Cass, Douglas, Fillmore, Gage, Jefferson and 11 more | 3 hr |
| Aug 14, 5:34 PM CDT | Severe Thunderstorm Watch | SPC | Butler, Cass, Colfax, Dodge, Douglas, Fillmore and 17 more | 7 hr |
Nearby
Severe Thunderstorm Watches in Nebraska, 2024Every severe thunderstorm watch in 2024
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.