Alert archive / Nebraska / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 131, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jul 6, 2020, 6:42 PM CDT for Antelope County, Pierce County, Nebraska. It was in force for 63 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 6, 2020, 6:42 PM CDT (23:42 UTC)
- Expired
- Jul 6, 2020, 7:45 PM CDT
- In force
- 63 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Antelope County, NE, Pierce County, NE
The radar
The Omaha radar (KOAX), 158 km from the middle of the area, began a volume at 23:44 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 |
|---|---|---|---|
| Jul 6, 5:47 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.7 hours before the alert went out and 157 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
- 745 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 1171 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 17 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 6, 6:31 PM CDT, 11 minutes earlier.
Area forecast discussion, Jul 6, 6:31 PM CDT, 11 minutes before
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</html>Hazardous weather outlook, Jul 6, 3:15 PM CDT, 3 hours 27 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 315 PM CDT Mon Jul 6 2020 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-071015- 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- 315 PM CDT Mon Jul 6 2020 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 Tuesday A few scattered strong to severe thunderstorms will be possible over the northern parts of northeast Nebraska from around 5 pm to 9 pm this evening. These storms could produce hail, strong winds and locally heavy rain. It then appears that there may be a lull in activity from around 9 pm until after 2 am. After midnight, another area of strong to possibly severe thunderstorms is expected to move into parts of northeast Nebraska from the northwest. The main hazard from these storms is expected to be strong gusty winds. There is a lot of uncertainty as to how far south these storms could develop. .DAYS TWO THROUGH SEVEN...Tuesday Night through Monday Thunderstorms are possible again from Wednesday afternoon through Wednesday night. Some storms could become severe with large hail, strong winds and areas of very heavy rain that could cause localized flooding. There will continue to be chances for thunderstorms from Thursday into the weekend, with the highest chances for Thursday into Thursday night. Later outlooks will address the potential for severe storms in those periods. Heat indices over the next several days will average 95 to 100 just about every afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected to be needed tonight or Tuesday, but please pass along any reports of severe weather or heavy rain.
In the hours before
Special weather statement, Jul 6, 4:57 PM CDT, 1 hour 45 minutes before
Special Weather Statement National Weather Service Omaha/Valley Nebraska 457 PM CDT Mon Jul 6 2020 NEZ011-016-017-062230- Pierce NE-Knox NE-Antelope NE- 457 PM CDT Mon Jul 6 2020 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PIERCE... NORTHEASTERN ANTELOPE AND SOUTH CENTRAL KNOX COUNTIES UNTIL 530 PM CDT... At 457 PM CDT, Doppler radar was tracking a strong thunderstorm near Creighton, or 34 miles east of O'neill, moving east at 15 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Plainview, Creighton, Brunswick, Winnetoon, Bazile Mills and The Highway 14 And 59 Junction. LAT...LON 4233 9806 4251 9805 4254 9768 4227 9770 TIME...MOT...LOC 2157Z 274DEG 12KT 4242 9796 DEWALD
Local storm report, Jul 6, 5:27 PM CDT, 1 hour 15 minutes before
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</html>Local storm report, Jul 6, 5:36 PM CDT, 1 hour 6 minutes before
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</html>Local storm report, Jul 6, 5:59 PM CDT, 43 minutes before
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</html>Local storm report, Jul 6, 6:27 PM CDT, 15 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 6, 4:15 PM CDT | Special Weather Statement | OAX | Knox | 30 min |
| Jul 6, 4:37 PM CDT | Special Weather Statement | OAX | Knox | 23 min |
| Jul 6, 4:57 PM CDT | Special Weather Statement | OAX | Knox | 33 min |
| Jul 6, 5:00 PM CDT | Severe Thunderstorm Warning | OAX | Cedar | 45 min |
| Jul 6, 5:06 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 39 min |
| Jul 6, 5:12 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox, Pierce | 48 min |
| Jul 6, 5:42 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 24 min |
| Jul 6, 5:45 PM CDT | Severe Thunderstorm Warning | OAX | Cedar | 30 min |
| Jul 6, 5:52 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox | 23 min |
| Jul 6, 5:59 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox | 46 min |
| Jul 6, 6:14 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox, Pierce | 46 min |
| Jul 6, 6:29 PM CDT | Special Weather Statement | OAX | Wayne | 31 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2020Every severe thunderstorm warning in 2020
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.