Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 219, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jul 3, 2017, 5:41 PM CDT for Cedar County, Nebraska. It was in force for 34 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
- Jul 3, 2017, 5:41 PM CDT (22:41 UTC)
- Expired
- Jul 3, 2017, 6:15 PM CDT
- In force
- 34 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Cedar County, NE
The radar
The Sioux Falls radar (KFSD), 118 km from the middle of the area, began a volume at 22:41 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 nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.7 hours before the alert went out and 160 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
- 2244 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 914 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 10 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 Jul 3, 3:06 PM CDT, 2 hours 35 minutes earlier.
Area forecast discussion, Jul 3, 3:06 PM CDT, 2 hours 35 minutes before
Area Forecast Discussion National Weather Service Omaha/Valley NE 306 PM CDT Mon Jul 3 2017 .SHORT TERM...(Tonight through Thursday) Issued at 300 PM CDT Mon Jul 3 2017 Isolated storms are possible through the remainder of the holiday period. Scattered thunderstorms had popped up in a narrow band from southeast Nebraska across central Iowa into northern Illinois in vicinity of a weak surface boundary at 19Z. A weak upper low was also indicated over northeast Kansas helping to lift convection slowly north. Forecast soundings show plenty of instability over the area this afternoon but weak shear resulting in limited movement. CAM models generally weaken and dissipate the current convection over the area by 00Z with primary focus shifting to western Nebraska and eastern Kansas for the evening period as weak short waves move into those respective areas. After 06Z main development is expected across South Dakota and Oklahoma as the short waves continue to dig eastward. This northern and southern split continues into Tuesday with the forecast area generally between the two convective complexes. Have kept PoPs on the low end for the area through Tuesday for mainly popup storms. Upper ridge over the western CONUS then begins to push into the plains region Tuesday night and Wednesday with rain chances diminishing. Hot temperatures then become the main forecast feature for Wednesday and Thursday with the heat index around 100 degrees Thursday afternoon. .LONG TERM...(Thursday night through Monday) Issued at 300 PM CDT Mon Jul 3 2017 Pattern returns to a western ridge eastern trough configuration in the extended period. This results in a bit less heat with a return to periodic chances of thunderstorms as northwest flow sets up again over the area. && .AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon) Issued at 1244 PM CDT Mon Jul 3 2017 VFR conditions are forecast through Tuesday morning outside of any thunderstorms that could affect TAF sites. Isolated thunderstorms which developed just before 18Z in southwest Iowa will likely spread northwest toward the KOMA and KOFK TAF sites during the afternoon and evening, and could produce MVFR cigs/vsbys. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && SHORT TERM...Fobert LONG TERM...Fobert AVIATION...Dergan
Hazardous weather outlook, Jul 3, 12:43 PM CDT, 4 hours 58 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 1243 PM CDT Mon Jul 3 2017 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-040745- 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- 1243 PM CDT Mon Jul 3 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST IOWA...WEST CENTRAL IOWA...EAST CENTRAL NEBRASKA...NORTHEAST NEBRASKA AND SOUTHEAST NEBRASKA. .DAY ONE...THIS AFTERNOON AND TONIGHT Isolated thunderstorms are possible across most of eastern Nebraska, and especially southwest Iowa, through the afternoon and evening. Some of the storms could produce small hail and gusty winds, but a few could become stronger and produce large hail. Brief heavy rain is also possible as storms only slowly drift to the northeast. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A chance of thunderstorms will remain in the forecast through Tuesday night. Isolated strong to severe storms will be possible, especially during the afternoon and evening hours. .SPOTTER INFORMATION STATEMENT... Storm spotter activation will not be needed today or tonight.
In the hours before
Local storm report, Jul 3, 4:18 PM CDT, 1 hour 23 minutes before
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</html>Special weather statement, Jul 3, 4:39 PM CDT, 1 hour 2 minutes before
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</html>Local storm report, Jul 3, 5:21 PM CDT, 20 minutes before
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</html>Special weather statement, Jul 3, 5:28 PM CDT, 13 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 |
|---|---|---|---|---|
| Jul 3, 2:15 PM CDT | Special Weather Statement | OAX | Johnson | 45 min |
| Jul 3, 3:30 PM CDT | Special Weather Statement | OAX | Pawnee | 30 min |
| Jul 3, 3:30 PM CDT | Severe Thunderstorm Warning | OAX | Dodge | 30 min |
| Jul 3, 4:10 PM CDT | Special Weather Statement | OAX | Lancaster | 35 min |
| Jul 3, 4:39 PM CDT | Special Weather Statement | OAX | Saunders | 36 min |
| Jul 3, 4:55 PM CDT | Special Weather Statement | OAX | Douglas | 35 min |
| Jul 3, 5:05 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Saunders, Washington | 25 min |
| Jul 3, 5:28 PM CDT | Special Weather Statement | OAX | Cedar | 32 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2017Every severe thunderstorm warning 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.