Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 263, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Jul 6, 1998, 6:59 PM CDT for Washington County, Nebraska. It was in force for 61 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, 6:59 PM CDT (23:59 UTC)
- Expired
- Jul 6, 1998, 8:00 PM CDT
- In force
- 61 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Washington County, NE
The radar
The Omaha radar (KOAX), 26 km from the middle of the area, began a volume at 00:00 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, 5:15 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 12.0 hours before the alert went out and 27 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, 4:45 PM CDT, 2 hours 14 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 445 PM CDT MON JUL 6 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION WILL BE REQUIRED ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA THIS EVENING. DISCUSSION... SEVERE THUNDERSTORMS WERE MOVING INTO NORTHEAST NEBRASKA LATE THIS AFTERNOON WITH A LINE OF STORMS DEVELOPING INTO CENTRAL NEBRASKA. THIS STORM COMPLEX WILL CONTINUE TO MOVE EAST DURING THE EVENING AND IS EXPECTED TO REACH EAST CENTRAL AND SOUTHEAST NEBRASKA AND SOUTHWEST IOWA BETWEEN 7 AND 10 PM. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREAT WITH ISOLATED TORNADOES POSSIBLE. VERY HEAVY RAIN IS ALSO LIKELY WITH THESE STORMS AND SINCE THE GROUND IS ALREADY SATURATED FROM RAINFALL OVER THE PAST TWO DAYS SMALLER STREAMS AND CRE@EKS WILL TEND TO FLOOD QUICKLY. FOBERT
Special weather statement, Jul 6, 4:45 PM CDT, 2 hours 14 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 445 PM CDT MON JUL 6 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION WILL BE REQUIRED ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA THIS EVENING. DISCUSSION... SEVERE THUNDERSTORMS WERE MOVING INTO NORTHEAST NEBRASKA LATE THIS AFTERNOON WITH A LINE OF STORMS DEVELOPING INTO CENTRAL NEBRASKA. THIS STORM COMPLEX WILL CONTINUE TO MOVE EAST DURING THE EVENING AND IS EXPECTED TO REACH EAST CENTRAL AND SOUTHEAST NEBRASKA AND SOUTHWEST IOWA BETWEEN 7 AND 10 PM. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREAT WITH ISOLATED TORNADOES POSSIBLE. VERY HEAVY RAIN IS ALSO LIKELY WITH THESE STORMS AND SINCE THE GROUND IS ALREADY SATURATED FROM RAINFALL OVER THE PAST TWO DAYS SMALLER STREAMS AND CRE@EKS WILL TEND TO FLOOD QUICKLY. FOBERT
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, 4:27 PM CDT | Severe Thunderstorm Warning | OAX | Antelope | 63 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, 6:34 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; radar from the NEXRAD Level II archive.