Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 126, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at May 28, 1998, 6:14 PM CDT for Cedar County, Nebraska. It was in force for 36 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
- May 28, 1998, 6:14 PM CDT (23:14 UTC)
- Expired
- May 28, 1998, 6:50 PM CDT
- In force
- 36 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Cedar County, NE
The radar
The Sioux Falls radar (KFSD), 118 km from the middle of the area, began a volume at 23:14 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 28, 6:40 PM CDT | Tornado F2 | Coleridge, NE | Three farms damaged. Eight to ten power poles downed 8 -10 miles east southeast of Hartington. Injury occurred about 9 miles east of Hartington southeast of the Highway 84/57 interchange. |
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, 11.2 hours before the alert went out and 160 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
- 1669 J/kg
- Mixed-layer CIN
- -237 J/kg
- Mixed-layer LCL
- 991 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 226 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, May 28, 4:35 PM CDT, 1 hour 39 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-291200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 435 PM CDT THU MAY 28 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT ACROSS PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. DISCUSSION... A WEAK FRONTAL BOUNDARY EXTENDING FROM NORTHWEST IOWA TO SOUTHWEST NEBRASKA WILL CONTINUE TO MOVE SLOWLY SOUTHEAST REACHING FAR SOUTHEAST NEBRASKA LATE TONIGHT. THE FRONT COMBINED WITH A MOIST AND EXTREMELY UNSTABLE AIRMASS IS EXPECTED TO TRIGGER SCATTERED THUNDERSTORMS TONIGHT. SOME OF THESE STORMS MAY BECOME SEVERE WITH THE PRIMARY THREAT BEING DAMAGING WINDS...HEAVY RAINFALL AND LOCAL FLASH-FLOODING. THE GREATEST AREA AT RISK FOR SEVERE THUNDERSTORMS WOULD BE NORTH OF A LINE FROM COLUMBUS TO ONAWA IOWA THIS EVENING. LJH
Special weather statement, May 28, 4:35 PM CDT, 1 hour 39 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-291200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 435 PM CDT THU MAY 28 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE REQUIRED TONIGHT ACROSS PARTS OF EASTERN NEBRASKA AND SOUTHWEST IOWA. DISCUSSION... A WEAK FRONTAL BOUNDARY EXTENDING FROM NORTHWEST IOWA TO SOUTHWEST NEBRASKA WILL CONTINUE TO MOVE SLOWLY SOUTHEAST REACHING FAR SOUTHEAST NEBRASKA LATE TONIGHT. THE FRONT COMBINED WITH A MOIST AND EXTREMELY UNSTABLE AIRMASS IS EXPECTED TO TRIGGER SCATTERED THUNDERSTORMS TONIGHT. SOME OF THESE STORMS MAY BECOME SEVERE WITH THE PRIMARY THREAT BEING DAMAGING WINDS...HEAVY RAINFALL AND LOCAL FLASH-FLOODING. THE GREATEST AREA AT RISK FOR SEVERE THUNDERSTORMS WOULD BE NORTH OF A LINE FROM COLUMBUS TO ONAWA IOWA THIS EVENING. LJH
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 6:34 PM CDT | Tornado Warning | OAX | Cedar | 31 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.