Alert archive / Nebraska / Tornado Warnings in 1998
Tornado Warning 64, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Jun 29, 1998, 10:31 AM CDT for Knox County, Nebraska. It was in force for 34 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 29, 1998, 10:31 AM CDT (15:31 UTC)
- Expired
- Jun 29, 1998, 11:05 AM CDT
- In force
- 34 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Knox County, NE
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 29, 10:45 AM CDT | Hail 2 | Wausa, NE |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 3.5 hours before the alert went out and 193 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
- 2006 J/kg
- Mixed-layer CIN
- -188 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
915 WFUS1 KOMA 291532 RRA TOROMA NEC107-291605- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1031 AM CDT MON JUN 29 1998 THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A * TORNADO WARNING FOR... KNOX COUNTY IN NORTHEASTERN NEBRASKA * UNTIL 1105 AM CDT * AT 1029 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A POSSIBLE TORNADO 36 MILES SOUTHWEST OF YANKTON OR 5 MILES NORTH NORTHWEST OF CREIGHTON MOVING EAST SOUTHEAST AT 40 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... CREIGHTON AT 1035 AM CDT WAUSA AT 1045 AM CDT IF YOU ARE IN THE WARNED AREA...TAKE SHELTER IN A BASEMENT IF ONE IS AVAILABLE. OTHERWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. CARS AND MOBILE HOMES SHOULD BE ABANDONED. SMITH
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 29, 5:45 AM CDT, 4 hours 46 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-301200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 545 AM CDT MON JUN 29 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE NEEDED IN EASTERN NEBRASKA AND SOUTHWEST IOWA TODAY INTO THIS EVENING. DISCUSSION... A WARM FRONT ACROSS NORTHERN KANSAS INTO NORTHERN MISSOURI WILL MOVE SLOWLY NORTH TODAY. IN ADDITION A COOL FRONT WILL MOVE ACROSS THE AREA LATER THIS AFTERNOON INTO TONIGHT FROM THE NORTHWEST. MOIST AND UNSTABLE AIR INTERACTING WITH THESE FRONTS WILL RESULT IN AREAS OF THUNDERSTORM DEVELOPMENT. DUE TO HIGH INSTABILITY IN THE ATMOSPHERE ALONG WITH LOW LEVEL WIND SHEAR...SOME OF THE THUNDERSTORMS MAY TURN SEVERE WITH LARGE HAIL...DAMAGING WINDS AND ISOLATED TORNADOES. HEAVY RAINFALL IS ALSO A THREAT DUE TO THE HIGH ATMOSPHERIC WATERj CONTENT. GW
Special weather statement, Jun 29, 5:45 AM CDT, 4 hours 46 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-301200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 545 AM CDT MON JUN 29 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE NEEDED IN EASTERN NEBRASKA AND SOUTHWEST IOWA TODAY INTO THIS EVENING. DISCUSSION... A WARM FRONT ACROSS NORTHERN KANSAS INTO NORTHERN MISSOURI WILL MOVE SLOWLY NORTH TODAY. IN ADDITION A COOL FRONT WILL MOVE ACROSS THE AREA LATER THIS AFTERNOON INTO TONIGHT FROM THE NORTHWEST. MOIST AND UNSTABLE AIR INTERACTING WITH THESE FRONTS WILL RESULT IN AREAS OF THUNDERSTORM DEVELOPMENT. DUE TO HIGH INSTABILITY IN THE ATMOSPHERE ALONG WITH LOW LEVEL WIND SHEAR...SOME OF THE THUNDERSTORMS MAY TURN SEVERE WITH LARGE HAIL...DAMAGING WINDS AND ISOLATED TORNADOES. HEAVY RAINFALL IS ALSO A THREAT DUE TO THE HIGH ATMOSPHERIC WATERj CONTENT. GW
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 9:48 PM CDT | Severe Thunderstorm Warning | OAX | Richardson | 32 min |
| Jun 28, 11:21 PM CDT | Severe Thunderstorm Warning | OAX | Pawnee | 49 min |
| Jun 28, 11:51 PM CDT | Severe Thunderstorm Warning | OAX | Richardson | 49 min |
| Jun 28, 11:55 PM CDT | Flash Flood Warning | OAX | Richardson | 6 hr |
| Jun 29, 12:22 AM CDT | Severe Thunderstorm Warning | OAX | Gage | 48 min |
| Jun 29, 9:51 AM CDT | Severe Thunderstorm Warning | OAX | Knox | 64 min |
| Jun 29, 10:42 AM CDT | Tornado Warning | OAX | Cedar, Pierce | 48 min |
| Jun 29, 11:05 AM CDT | Tornado Warning | OAX | Wayne | 50 min |
| Jun 29, 11:29 AM CDT | Tornado Warning | OAX | Cuming, Thurston | 46 min |
| Jun 29, 11:57 AM CDT | Tornado Warning | OAX | Burt | 48 min |
| Jun 29, 3:25 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Seward | 50 min |
| Jun 29, 3:39 PM CDT | Tornado Warning | OAX | Seward | 51 min |
| Jun 29, 4:08 PM CDT | Tornado Warning | OAX | Lancaster, Saline | 62 min |
| Jun 29, 4:39 PM CDT | Severe Thunderstorm Warning | OAX | Gage | 61 min |
| Jun 29, 4:56 PM CDT | Severe Thunderstorm Warning | OAX | Otoe | 49 min |
| Jun 29, 5:06 PM CDT | Severe Thunderstorm Warning | OAX | Johnson | 49 min |
Nearby
Tornado Warnings in Nebraska, 1998Every tornado warning in 1998Tornadoes in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.