Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 27, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Apr 10, 2017, 12:16 AM CDT for Richardson County, Nebraska. It was in force for 29 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
- Apr 10, 2017, 12:16 AM CDT (05:16 UTC)
- Expired
- Apr 10, 2017, 12:45 AM CDT
- In force
- 29 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Richardson County, NE
The radar
The Topeka radar (KTWX), 133 km from the middle of the area, began a volume at 05:16 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
Topeka, KS (KFOE), launched 00:00Z, 5.3 hours before the alert went out and 125 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
- 2023 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1543 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 6.4
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 Apr 9, 6:29 PM CDT, 5 hours 47 minutes earlier.
Area forecast discussion, Apr 9, 6:29 PM CDT, 5 hours 47 minutes before
Area Forecast Discussion National Weather Service Omaha/Valley NE 629 PM CDT Sun Apr 9 2017 .SHORT TERM...(Tonight through Wednesday) Issued at 341 PM CDT Sun Apr 9 2017 Large scale flow via WV imagery this aftn was depicting a shortwave trof situated over the nrn high plains beginning to push into the wrn Dakotas. Meanwhile...88D regional mosaic was showing a narrow line of convection forming in the panhandle along a dryline/20deg sfc dew point depressions. At this point...HIRES models indicate the environment will become less supportive for severe storm early this evening. Deep layer shear will remain relatively strong...but CAPE drop off dramatically. Cannot totally rule out the possibility for one or two severe/near severe storms though with hail possible over the nrn CWA. Toward mid/late evening...the RAP13 advertises a narrow line convection forming along increasing bndry lyr threat-E convergence along/south of the I-80 corridor associated with a cold front dropping into the cntrl Plains. With DCAPES around 1200J/kg coupled with increasing lyr Theta-E diff...seems possible a few storms may produce severe/near-severe winds gusts over the srn CWA. Monday aftn...NAM12/GFS20/CMC all prog secondary shot of cold air advection into the CWA with another round of pcpn activity mainly over the nrn CWA being driven by rather strong 305-310k isentropic upglide. More pcpn possible on Wednesday with the passage of a shortwave trof coupled with warm front lifting thru the region. .LONG TERM...(Wednesday night through Sunday) Issued at 341 PM CDT Sun Apr 9 2017 GFS20/ECM/CMC all advertise a progressive pattern during the extended pds with pcpn chances from Thursday night into Saturday evening. && .AVIATION...(For the 00Z TAFS through 00Z Monday evening) Issued at 627 PM CDT Sun Apr 9 2017 Thunderstorms across central NE appear to have enough support to possibly hold together to affect the TAF sites within a few hours, by 01-02z at KOFK/KLNK and 02-03z at KOMA. Have put in about 2-3 hour window of thunder at all TAF sites. Otherwise, VFR initially, but becoming MVFR at KOFK through the night. Gusty northwest winds developing tomorrow morning, with a few showers in the vicinity of KOFK. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && SHORT TERM...DEE LONG TERM...DEE AVIATION...
Hazardous weather outlook, Apr 9, 4:52 PM CDT, 7 hours 24 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 452 PM CDT Sun Apr 9 2017 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-101200- 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- 452 PM CDT Sun Apr 9 2017 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 MONDAY Scattered thunderstorms are possible this evening. A few of these storms may become strong to severe, with large hail and damaging winds the main threats. The potential is highest from southeasternmost Nebraska into southwest Iowa. .DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SUNDAY There will be a chance for thunderstorms Wednesday and Wednesday night, and again from Friday into Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated tonight or Monday.
In the hours before
Local storm report, Apr 9, 10:56 PM CDT, 1 hour 20 minutes before
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</html>Local storm report, Apr 9, 11:19 PM CDT, 57 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 |
|---|---|---|---|---|
| Apr 9, 8:14 PM CDT | Severe Thunderstorm Warning | OAX | Jefferson, Saline | 46 min |
| Apr 9, 8:26 PM CDT | Special Weather Statement | OAX | Butler, Saunders | 34 min |
| Apr 9, 8:44 PM CDT | Special Weather Statement | OAX | Lancaster | 46 min |
| Apr 9, 8:52 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson, Lancaster, Saline | 38 min |
| Apr 9, 9:11 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Johnson, Lancaster, Nemaha, Otoe | 49 min |
| Apr 9, 9:24 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Johnson, Otoe, Pawnee | 33 min |
| Apr 9, 9:47 PM CDT | Severe Thunderstorm Warning | OAX | Cass, Otoe | 43 min |
| Apr 9, 10:02 PM CDT | Special Weather Statement | OAX | Pawnee | 43 min |
| Apr 9, 10:18 PM CDT | Severe Thunderstorm Warning | OAX | Johnson, Nemaha, Pawnee, Richardson | 42 min |
| Apr 9, 10:26 PM CDT | Special Weather Statement | OAX | Pawnee | 49 min |
| Apr 9, 10:30 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Johnson, Nemaha, Pawnee, Richardson | 45 min |
| Apr 9, 11:01 PM CDT | Special Weather Statement | OAX | Nemaha | 29 min |
| Apr 9, 11:17 PM CDT | Special Weather Statement | OAX | Nemaha | 43 min |
| Apr 9, 11:36 PM CDT | Special Weather Statement | OAX | Nemaha, Richardson | 24 min |
| Apr 9, 11:39 PM CDT | Severe Thunderstorm Warning | OAX | Nemaha, Richardson | 36 min |
| Apr 10, 3:28 PM CDT | Freeze Warning | OAX | Butler, Gage, Jefferson, Lancaster, Saline, Seward | 17 hr |
| Apr 9, 10:05 PM CDT | Special Weather Statement | OAX | Fremont | 40 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.