Alert archive / Nebraska / Mesoscale Discussions in 2017
Mesoscale Discussion 735
The Storm Prediction Center issued this mesoscale discussion at May 16, 2017, 3:58 PM CDT for 4 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 16, 2017, 3:58 PM CDT (20:58 UTC)
- Expired
- May 16, 2017, 6:00 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 82 counties
Adams County, IA, Audubon County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Fremont County, IA, Guthrie County, IA, Harrison County, IA, Ida County, IA, Kossuth County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, O'Brien County, IA, Osceola County, IA, Page County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Woodbury County, IA, Cloud County, KS, Graham County, KS, Jewell County, KS, Marshall County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Republic County, KS, Rooks County, KS, Sheridan County, KS, Smith County, KS, Washington County, KS, Atchison County, MO, Adams County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Lancaster County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Washington County, NE, Webster County, NE, York County, NE
The radar
The Grand Island radar (KUEX), 78 km from the middle of the area, began a volume at 21:00 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 9.0 hours before the alert went out and 132 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
- 356 J/kg
- Mixed-layer CIN
- -358 J/kg
- Mixed-layer LCL
- 1160 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 7:19 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 26 more | 56 min |
| May 15, 8:50 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Emmet, Kossuth, Mitchell, Osceola and 3 more | 115 min |
| May 15, 9:48 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Howard, Mitchell, Winneshiek | 5 hr |
| May 15, 11:54 PM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola and 3 more | 3 hr |
| May 16, 2:13 AM CDT | Mesoscale Discussion | SPC | Buena Vista, Cherokee, Clay, Dickinson, Emmet, Hancock and 12 more | 92 min |
| May 16, 4:57 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Buena Vista, Calhoun, Carroll and 23 more | 7 hr |
| May 16, 2:03 PM CDT | Mesoscale Discussion | SPC | Barton, Clark, Edwards, Ellis, Ellsworth, Ford and 16 more | 27 min |
| May 16, 2:16 PM CDT | Tornado Watch | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellis and 20 more | 8 hr |
| May 16, 5:47 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Rawlins, Sherman, Thomas, Wallace | 88 min |
| May 15, 7:34 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Dawes, Morrill, Scotts Bluff, Sheridan and 1 more | 56 min |
| May 15, 7:41 PM CDT | Mesoscale Discussion | SPC | Burt, Butler, Colfax, Cuming, Dodge, Madison and 9 more | 3 hr |
| May 15, 10:53 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Dawes, Morrill, Scotts Bluff, Sheridan and 1 more | 67 min |
| May 16, 2:16 PM CDT | Mesoscale Discussion | SPC | Banner, Cheyenne, Kimball, Scotts Bluff, Sioux | 119 min |
Nearby
Mesoscale Discussions in Nebraska, 2017Mesoscale Discussions in Iowa, 2017Mesoscale Discussions in Kansas, 2017Every mesoscale discussion in 2017
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.