Alert archive / Nebraska / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 142, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jul 9, 2020, 12:53 AM CDT for Gage County, Jefferson County, Saline County, Nebraska. It was in force for 52 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 9, 2020, 12:53 AM CDT (05:53 UTC)
- Expired
- Jul 9, 2020, 1:45 AM CDT
- In force
- 52 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 75.0 mph
Counties Gage County, NE, Jefferson County, NE, Saline County, NE
The radar
The Omaha radar (KOAX), 123 km from the middle of the area, began a volume at 05:52 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 8, 9:41 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 5.9 hours before the alert went out and 123 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
- 2342 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1563 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 9, 12:31 AM CDT, 22 minutes earlier.
Area forecast discussion, Jul 9, 12:31 AM CDT, 22 minutes before
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</html>Hazardous weather outlook, Jul 8, 4:14 PM CDT, 8 hours 39 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 414 PM CDT Wed Jul 8 2020 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-091115- 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- 414 PM CDT Wed Jul 8 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 Thursday Heat indices near 100 to 102 degrees have developed at some locations this afternoon. Thunderstorms are forecast later this evening, primarily over portions of eastern Nebraska. While isolated occurrences of hail or locally strong winds will be possible areawide, the highest probability of severe weather occurrence will be west of a line from Sioux City to Lincoln to Beatrice this evening. Damaging winds will be the primary hazard. Hail to quarter size and locally heavy rainfall are also possible. .DAYS TWO THROUGH SEVEN...Thursday night through Wednesday Another round of severe storms is possible late Friday night/Saturday morning and evening over portions of eastern Nebraska and southwest Iowa. Timing, location, and specific hazards all remain uncertain at this point in time. .SPOTTER INFORMATION STATEMENT... Spotter activation will probably not be needed through tonight. tsn
In the hours before
Special weather statement, Jul 8, 11:17 PM CDT, 1 hour 36 minutes before
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</html>Local storm report, Jul 9, 12:38 AM CDT, 15 minutes before
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</html>Local storm report, Jul 9, 12:49 AM CDT, 4 minutes before
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</html>Local storm report, Jul 9, 12:50 AM CDT, 3 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 8, 8:59 PM CDT | Special Weather Statement | OAX | Antelope, Knox | 46 min |
| Jul 8, 9:17 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox | 43 min |
| Jul 8, 9:32 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 43 min |
| Jul 8, 10:06 PM CDT | Special Weather Statement | OAX | Antelope, Boone, Pierce | 24 min |
| Jul 8, 10:24 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Boone, Madison, Platte | 51 min |
| Jul 8, 11:17 PM CDT | Special Weather Statement | OAX | Platte | 28 min |
| Jul 8, 11:40 PM CDT | Special Weather Statement | OAX | Butler, Platte | 35 min |
| Jul 9, 12:07 AM CDT | Severe Thunderstorm Warning | OAX | Jefferson, Saline, Seward | 53 min |
| Jul 9, 12:16 AM CDT | Special Weather Statement | OAX | Butler, Colfax | 29 min |
| Jul 9, 12:38 AM CDT | Severe Thunderstorm Warning | OAX | Butler, Lancaster, Saline, Saunders, Seward | 52 min |
| Jul 9, 1:04 AM CDT | Severe Thunderstorm Warning | OAX | Butler, Colfax, Dodge, Saunders | 26 min |
| Jul 9, 1:10 AM CDT | Severe Thunderstorm Warning | OAX | Cass, Otoe, Sarpy, Saunders | 65 min |
| Jul 9, 1:18 AM CDT | Severe Thunderstorm Warning | OAX | Johnson, Nemaha, Pawnee, Richardson | 57 min |
| Jul 9, 1:34 AM CDT | Special Weather Statement | OAX | Burt, Cuming, Dodge, Douglas, Sarpy, Stanton and 2 more | 26 min |
| Jul 9, 2:12 AM CDT | Severe Thunderstorm Warning | OAX | Nemaha, Otoe, Pawnee, Richardson | 48 min |
| Jul 9, 2:02 AM CDT | Special Weather Statement | OAX | Fremont, Mills, Montgomery, Page | 43 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.