Alert archive / Nebraska / Mesoscale Discussions in 2023
Mesoscale Discussion 705
The Storm Prediction Center issued this mesoscale discussion at May 7, 2023, 11:49 AM MDT for Logan County, Phillips County, Sedgwick County, Colorado; 21 counties in Nebraska. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- May 7, 2023, 11:49 AM MDT (17:49 UTC)
- Expired
- May 7, 2023, 1:45 PM MDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 40%
All 24 counties
Logan County, CO, Phillips County, CO, Sedgwick County, CO, Arthur County, NE, Blaine County, NE, Chase County, NE, Custer County, NE, Dawson County, NE, Deuel County, NE, Frontier County, NE, Garfield County, NE, Greeley County, NE, Hayes County, NE, Hooker County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Perkins County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE
The radar
The North Platte radar (KLNX), 98 km from the middle of the area, began a volume at 17:53 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 5.8 hours before the alert went out and 37 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
- 310 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 1729 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -62 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 7, 1:27 PM MDT | Severe Thunderstorm Watch | SPC | Yuma | 5 hr |
| May 6, 8:37 PM MDT | Mesoscale Discussion | SPC | Gage, Jefferson, Johnson, Pawnee, Thayer | 53 min |
| May 7, 3:51 AM MDT | Mesoscale Discussion | SPC | Boone, Burt, Butler, Colfax, Cuming, Dakota and 15 more | 2 hr |
| May 7, 1:10 PM MDT | Mesoscale Discussion | SPC | Burt, Cass, Dodge, Douglas, Sarpy, Saunders and 1 more | 2 hr |
| May 7, 4:01 PM MDT | Mesoscale Discussion | SPC | Blaine, Chase, Custer, Dawson, Dundy, Frontier and 11 more | 89 min |
| May 7, 5:02 PM MDT | Mesoscale Discussion | SPC | Adams, Buffalo, Butler, Cass, Clay, Colfax and 32 more | 88 min |
| May 7, 5:45 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Butler, Cass, Clay, Colfax and 37 more | 6 hr |
Nearby
Mesoscale Discussions in Nebraska, 2023Mesoscale Discussions in Colorado, 2023Every mesoscale discussion in 2023
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.