Alert archive / Nebraska / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 76, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at May 12, 2022, 3:40 PM CDT for 5 counties in Nebraska. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 12, 2022, 3:40 PM CDT (20:40 UTC)
- Expired
- May 12, 2022, 4:30 PM CDT
- In force
- 50 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Cedar County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Wayne County, NE
The radar
The Omaha radar (KOAX), 146 km from the middle of the area, began a volume at 20:40 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 12, 2:14 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 8.7 hours before the alert went out and 145 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
- 1555 J/kg
- Mixed-layer CIN
- -323 J/kg
- Mixed-layer LCL
- 1486 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- -52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 12, 3:32 PM CDT, 8 minutes earlier.
Area forecast discussion, May 12, 3:32 PM CDT, 8 minutes before
Area Forecast Discussion National Weather Service Omaha/Valley NE 332 PM CDT Thu May 12 2022 ...Updated Forecast Discussion... .DISCUSSION... Issued at 331 PM CDT Thu May 12 2022 Large scale flow consisting of negative tilt trough with embedded circulation situated over WY. At the surface, area of low pressure was located over south-central SD with a warm front extending into southern MN and a cold front extending to northeast CO. Per 88D mosaic storms have already formed along dry line in western KS and expanded into south-central NE. Environment activity is pushing into is quite unstable with MUCAPE roughly 4000 J/kg. Expect intensification trend to continue this afternoon as line of storms forge eastward. At this point, the HRRR is advertising this initial surge of convection will weaken late this afternoon with more development along the cold front sweeping in from the west. At this point expect thrust of strong/severe linear storms to roll across the CWA this evening with damaging straight line wind threat more prevalent along and north of I-80. Frontal passage should be underway in the Omaha metro sometime toward 06Z. Any lingering precip activity should be clear of the CWA by sunrise Friday morning. Very pleasant conditions expected then Friday and Saturday. Chances for showers and thunderstorms return Saturday night/Sunday morning in response to a cold front dropping out of the Dakotas. Through early next week precip chances will prevail in association with embedded impulses moving across the region. Highs: Fri - low 80s Sat - low 80s Sun - mid 70s Mon - upper 70s/low 80s Tue - mid/upper 70s Wed - mid/upper 70s && .AVIATION...(For the 18Z TAFS through 18Z Friday afternoon) Issued at 1143 AM CDT Thu May 12 2022 Deteriorating conditions expected at all TAF sites this evening. Line of strong TSRA is expected to develop over central NE sometime around 21Z this afternoon and intensify as it moves east. Severe winds will likely accompany line of storms with G50KT or greater by 02Z-03Z. Expect TSRA activity to move out of the area then around 07Z. Expect very strong non-convective LLWS threat at all terminals leading up to storm arrival. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && DISCUSSION...DEE AVIATION...DEE
Hazardous weather outlook, May 12, 3:11 PM CDT, 29 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 311 PM CDT Thu May 12 2022 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-131015- Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont- Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison- Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler- Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline- Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson- 311 PM CDT Thu May 12 2022 This Hazardous Weather Outlook is for portions of southwest Iowa...west central Iowa...east central Nebraska...northeast Nebraska and southeast Nebraska. .DAY ONE...Tonight and Friday A line of severe thunderstorms will move through northeast Nebraska this afternoon. The primary hazard will be winds to 80 mph or stronger. These damaging winds may be accompanied by hail up to the size of golfballs in the most intense storms. This evening, an additional line of strong to severe storms will move across much of eastern Nebraska and western Iowa. The strongest parts of this line of storms will be capable of producing winds to 70 mph or stronger, as well as hail up to the size of quarters. Storms should move out of the area by 2 AM Friday. .DAYS TWO THROUGH SEVEN...Friday night through Thursday Additional thunderstorms will be possible Saturday night into Sunday, though they are not expected to be severe. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and evening.
In the hours before
Local storm report, May 12, 3:18 PM CDT, 22 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 3:01 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone | 44 min |
| May 12, 3:19 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox, Pierce | 41 min |
| May 12, 3:25 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone, Madison, Pierce, Platte, Stanton | 50 min |
| May 12, 3:36 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 54 min |
| May 12, 3:43 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Cuming, Madison, Platte, Stanton | 47 min |
| May 12, 3:53 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox, Pierce | 22 min |
| May 12, 3:59 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Knox, Pierce, Stanton, Wayne | 61 min |
| May 12, 4:28 PM CDT | Severe Thunderstorm Warning | OAX | Cuming, Madison, Stanton, Thurston, Wayne | 33 min |
| May 12, 5:25 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Colfax, Lancaster, Platte, Saunders, Seward | 50 min |
| May 12, 5:45 PM CDT | Tornado Warning | OAX | Colfax, Platte | 30 min |
| May 12, 5:52 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Cuming, Madison, Platte, Stanton | 38 min |
| May 12, 6:02 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Colfax, Cuming, Dodge, Douglas, Lancaster and 2 more | 43 min |
| May 12, 6:07 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Cedar, Cuming, Stanton, Thurston, Wayne | 38 min |
| May 12, 6:12 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Colfax, Lancaster, Platte, Saunders, Seward | 48 min |
| May 12, 6:35 PM CDT | Severe Thunderstorm Warning | OAX | Saline, Seward | 40 min |
| May 12, 6:36 PM CDT | Tornado Warning | OAX | Burt, Cuming, Dodge, Thurston | 24 min |
| May 12, 6:39 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Douglas, Thurston, Washington | 51 min |
| May 12, 6:43 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Cuming, Thurston, Wayne | 21 min |
| May 12, 6:45 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Cuming, Dodge, Douglas, Saunders, Washington | 30 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2022Every severe thunderstorm warning in 2022
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.