Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 254, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jul 6, 1998, 4:27 PM CDT for Antelope 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, 1998, 4:27 PM CDT (21:27 UTC)
- Expired
- Jul 6, 1998, 5:30 PM CDT
- In force
- 63 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Antelope County, NE
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, 2:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 9.5 hours before the alert went out and 170 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
- 1215 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 979 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Jul 6, 12:01 PM CDT, 4 hours 26 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-071200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1201 PM CDT MON JUL 6 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION WILL LIKELY NEED TO BE ACTIVATED LATER THIS THIS AFTERNOON OVER NORTHEAST NEBRASKA. STORM SPOTTER ACTIVATION MAY BE REQUIRED LATER THIS AFTERNOON AND TONIGHT OVER THE REST OF EASTERN NEBRASKA AND SOUTHWEST IOWA. DISCUSSION... A LOW PRESSURE SYSTEM WAS OVER NORTH-CENTRAL NEBRASKA WITH A WARM FRONT EXTENDING SOUTHEAST INTO SOUTHWEST IOWA. THUNDERSTORMS OVER SOUTH DAKOTA WILL LIKELY DEVELOP SOUTHWARD INTO NORTHEAST NEBRASKA THIS AFTERNOON. THESE WILL CONTINUE TO DEVELOP OVER THE REST OF EASTERN NEBRASKA AND SOUTHWEST IOWA THIS EVENING AND TONIGHT. DUE TO AN EXTREMELY UNSTABLE AIRMASS OVER THE REGION...ANY THUNDERSTORMS THAT DO DEVELOP HAVE THE POTENTIAL TO PRODUCE SEVERE WEATHER INCLUDING TORNADOES. THE OTHER PROBLEM WILL BE THE POTENTIAL FOR HEAVY RAINFALL AND FLOODING. LJH
Special weather statement, Jul 6, 12:01 PM CDT, 4 hours 26 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-071200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1201 PM CDT MON JUL 6 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION WILL LIKELY NEED TO BE ACTIVATED LATER THIS THIS AFTERNOON OVER NORTHEAST NEBRASKA. STORM SPOTTER ACTIVATION MAY BE REQUIRED LATER THIS AFTERNOON AND TONIGHT OVER THE REST OF EASTERN NEBRASKA AND SOUTHWEST IOWA. DISCUSSION... A LOW PRESSURE SYSTEM WAS OVER NORTH-CENTRAL NEBRASKA WITH A WARM FRONT EXTENDING SOUTHEAST INTO SOUTHWEST IOWA. THUNDERSTORMS OVER SOUTH DAKOTA WILL LIKELY DEVELOP SOUTHWARD INTO NORTHEAST NEBRASKA THIS AFTERNOON. THESE WILL CONTINUE TO DEVELOP OVER THE REST OF EASTERN NEBRASKA AND SOUTHWEST IOWA THIS EVENING AND TONIGHT. DUE TO AN EXTREMELY UNSTABLE AIRMASS OVER THE REGION...ANY THUNDERSTORMS THAT DO DEVELOP HAVE THE POTENTIAL TO PRODUCE SEVERE WEATHER INCLUDING TORNADOES. THE OTHER PROBLEM WILL BE THE POTENTIAL FOR HEAVY RAINFALL AND FLOODING. LJH
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 10:20 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 60 min |
| Jul 5, 10:28 PM CDT | Flash Flood Warning | OAX | Washington | 6 hr |
| Jul 5, 11:20 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 45 min |
| Jul 5, 11:32 PM CDT | Severe Thunderstorm Warning | OAX | Antelope | 48 min |
| Jul 6, 3:51 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 64 min |
| Jul 6, 4:30 PM CDT | Severe Thunderstorm Warning | OAX | Cedar | 65 min |
| Jul 6, 4:45 PM CDT | Tornado Warning | OAX | Antelope, Knox, Pierce | 60 min |
| Jul 6, 5:07 PM CDT | Tornado Warning | OAX | Cedar | 63 min |
| Jul 6, 5:19 PM CDT | Severe Thunderstorm Warning | OAX | Boone, Madison | 61 min |
| Jul 6, 5:19 PM CDT | Severe Thunderstorm Warning | OAX | Pierce, Wayne | 61 min |
| Jul 6, 5:26 PM CDT | Severe Thunderstorm Warning | OAX | Stanton | 79 min |
| Jul 6, 5:58 PM CDT | Severe Thunderstorm Warning | OAX | Cuming, Thurston | 67 min |
| Jul 6, 5:58 PM CDT | Severe Thunderstorm Warning | OAX | Cuming, Thurston | 62 min |
| Jul 6, 6:11 PM CDT | Tornado Warning | OAX | Colfax, Platte | 64 min |
| Jul 6, 6:16 PM CDT | Severe Thunderstorm Warning | OAX | Burt | 64 min |
| Jul 6, 6:37 PM CDT | Severe Thunderstorm Warning | OAX | Dodge | 63 min |
| Jul 6, 6:59 PM CDT | Severe Thunderstorm Warning | OAX | Washington | 61 min |
| Jul 6, 6:34 PM CDT | Tornado Warning | OAX | Monona | 61 min |
| Jul 6, 6:49 PM CDT | Tornado Warning | OAX | Harrison | 61 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive.