Alert archive / Nebraska / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 441
The Storm Prediction Center issued this severe thunderstorm watch at Jul 26, 2014, 10:15 AM CDT for 9 counties in Iowa; 19 counties in Nebraska; 6 counties in South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 26, 2014, 10:15 AM CDT (15:15 UTC)
- Expired
- Jul 26, 2014, 4:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 65 kt
All 34 counties
Buena Vista County, IA, Cherokee County, IA, Harrison County, IA, Ida County, IA, Monona County, IA, O'Brien County, IA, Plymouth County, IA, Sioux County, IA, Woodbury County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Platte County, NE, Saunders County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, Bon Homme County, SD, Clay County, SD, Lincoln County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 89 km from the middle of the area, began a volume at 15:17 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
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 10:27 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Clay, Hutchinson, Turner, Yankton | 33 min |
| Jul 26, 10:52 AM CDT | Severe Thunderstorm Warning | OAX | Cedar, Knox | 38 min |
| Jul 26, 10:55 AM CDT | Severe Thunderstorm Warning | FSD | Dixon | 50 min |
| Jul 26, 11:29 AM CDT | Severe Thunderstorm Warning | OAX | Cedar | 13 min |
| Jul 26, 11:40 AM CDT | Severe Thunderstorm Warning | OAX | Knox | 35 min |
| Jul 26, 11:49 AM CDT | Severe Thunderstorm Warning | OAX | Knox | 26 min |
| Jul 26, 12:08 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox | 52 min |
| Jul 26, 12:12 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Knox, Pierce, Wayne | 48 min |
| Jul 26, 12:42 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone, Cuming, Madison, Pierce, Stanton and 1 more | 48 min |
| Jul 26, 1:30 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Madison | 30 min |
| Jul 26, 2:30 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Platte | 15 min |
| Jul 26, 3:14 PM CDT | Severe Thunderstorm Warning | OAX | Butler | 31 min |
| Jul 26, 3:43 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Seward | 32 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, 3.3 hours before the alert went out and 175 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
- 1367 J/kg
- Mixed-layer CIN
- -442 J/kg
- Mixed-layer LCL
- 1152 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -63 m²/s²
- 0-3 km storm-relative helicity
- 23 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 |
|---|---|---|---|---|
| Jul 26, 9:44 AM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 18 more | 91 min |
| Jul 26, 12:40 PM CDT | Mesoscale Discussion | SPC | Antelope, Burt, Cedar, Colfax, Cuming, Dakota and 10 more | 65 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2014Severe Thunderstorm Watches in Iowa, 2014Severe Thunderstorm Watches in South Dakota, 2014Every severe thunderstorm watch in 2014
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.