Alert archive / Nebraska / Tornado Warnings in 1998
Tornado Warning 3, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Apr 12, 1998, 6:31 PM CDT for Washington 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
- Apr 12, 1998, 6:31 PM CDT (23:31 UTC)
- Expired
- Apr 12, 1998, 7:05 PM CDT
- In force
- 34 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Washington County, NE
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 12, 6:47 PM CDT | Hail 1 | Blair, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 12, 3:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.5 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1568 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 487 m²/s²
- 0-3 km storm-relative helicity
- 522 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOMA 122331 RRA TOROMA NEC177-130005- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 631 PM CDT SUN APR 12 1998 * TORNADO WARNING FOR NORTHERN WASHINGTON COUNTY IN EAST CENTRAL NEBRASKA * UNTIL 705 PM CDT * SOME LOCATIONS AFFECTED SPIKER BY AROUND 630 PM CDT ORUM BY AROUND 635 PM CDT BLAIR BY AROUND 645 PM CDT * AT 630 PM CDT...A POSSIBLE TORNADO WAS INDICATED BY DOPPLER RADAR AND SPOTTER REPORTS 31 MILES NORTHWEST OF DOWNTOWN OMAHA OR 3 MILES SOUTHWEST OF SPIKER MOVING EAST NORTHEAST AT 30 MPH. PERSONS IN THE WARNED AREA SHOULD TAKE SHELTER IN A BASEMENT IF AVAILABLE. OTHE RWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. CARS AND MOBILE HOMES SHOULD BE ABANDONED. GW
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, Apr 12, 12:40 PM CDT, 5 hours 51 minutes before
NEZ007-010-028-029-121900- WIND ADVISORY NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 1240 PM CDT SUN APR 12 1998 ...WIND ADVISORY CANCELLED FOR REMAINDER OF CENTRAL NEBRASKA... THE WIND ADVISORY THAT HAS BEEN IN EFFECT FOR PORTIONS OF NORTHCENTRAL NEBRASKA THROUGH THIS AFTERNOON HAS BEEN CANCELLED. THE VERY STRONG SOUTHERLY WINDS THAT HAD BEEN OCCURRING OVER THE AREA HAVE PUSHED OFF TO THE EAST. WESTERLY WINDS HAVE MOVED INTO THE AREA...AND ALTHOUGH THESE WINDS ARE AVERAGING 20 TO 30 MPH WITH A FEW HIGHER GUSTS...THIS IS BELOW ADVISORY LEVELS. A WIND ADVISORY CONTINUES THROUGH THE AFTERNOON FOR EASTERN PORTIONS OF THE STATE. WINDSPEEDS THERE ARE EXPECTED TO EXCEED 35 MPH FOR MUCH OF THE AFTERNOON...WITH GUSTS NEAR 50 MPH POSSIBLE. PERSONS TRAVELING TO THE EAST SHOULD BE PREPARED FOR STRONG WINDS. SPARKER
Special weather statement, Apr 12, 5:35 PM CDT, 56 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-131200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 535 PM CDT SUN APR 12 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTERS MAY CONTINUE TO BE REQUIRED ACROSS EAST CENTRAL AND SOUTHEAST NEBRASKA AND SOUTHWEST IOWA THIS EVENING. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT FOR A LARGE PART OF THIS AREA. DISCUSSION... SEVERE THUNDERSTORMS REMAIN A POSSIBILITY ACROSS EAST CENTRAL AND SOUTHEAST NEBRASKA INTO SOUTHWEST IOWA THIS EVENING. THUNDERSTORMS MAY PRODUCE LARGE HAIL AND COULD PRODUCE DAMAGING WINDS. DRIER AIR HAS MOVED INTO MUCH OF NORTHEAST NEBRASKA AND FURTHER SEVERE WEATHER IS UNLIKELY THERE. POWERS
Special weather statement, Apr 12, 5:35 PM CDT, 56 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-131200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 535 PM CDT SUN APR 12 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTERS MAY CONTINUE TO BE REQUIRED ACROSS EAST CENTRAL AND SOUTHEAST NEBRASKA AND SOUTHWEST IOWA THIS EVENING. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT FOR A LARGE PART OF THIS AREA. DISCUSSION... SEVERE THUNDERSTORMS REMAIN A POSSIBILITY ACROSS EAST CENTRAL AND SOUTHEAST NEBRASKA INTO SOUTHWEST IOWA THIS EVENING. THUNDERSTORMS MAY PRODUCE LARGE HAIL AND COULD PRODUCE DAMAGING WINDS. DRIER AIR HAS MOVED INTO MUCH OF NORTHEAST NEBRASKA AND FURTHER SEVERE WEATHER IS UNLIKELY THERE. POWERS
Special weather statement, Apr 12, 5:54 PM CDT, 37 minutes before
IAZ043-055-056-069-079-090-NEZ011-012-015>018-030>034-042>045- 050>053-065>068-078-088>093-130200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 554 PM CDT SUN APR 12 1998 ...SEVERE THUNDERSTORM WATCH CANCELLED IN PARTS OF NORTHEAST NEBRASKA... SEVERE THUNDERSTORM WATCH 201...ISSUED AROUND 3 PM CDT THIS SUNDAY EVENING IS NO LONGER IN EFFECT IN THE FOLLOWING COUNTIES OF NORTHEAST NEBRASKA... KNOX...CEDAR...ANTELOPE...PIERCE...WAYNE...BOONE...MADISON AND STANTON. THIS IS ROUGHLY THE AREA NORTHWEST OF A SIOUX CITY TO NORFOLK TO ALBION LINE. THUNDERSTORMS HAVE MOVED EAST OF THIS AREA AND SEVERE WEATHER IS NOW UNLIKELY. SEVERE THUNDERSTORM WATCH 201 REMAINS IN EFFECT UNTIL 9 PM CDT FOR PLATTE...COLFAX...CUMING...BURT...DODGE...WASHINGTON...BURT... SAUNDERS...DOUGLAS...SARPY...SEWARD...LANCASTER...CASS...OTOE... SALINE...JEFFERSON...GAGE...JOHNSON...NEMAHA...PAWNEE AND RICHARDSON COUNTIES OF EASTERN NEBRASKA...AS WELL AS MONONA...HARRISON... SHELBY...POTTAWATTAMIE...MILLS AND FREMONT COUNTIES OF SOUTHWEST IOWA. THUNDERSTORMS PRODUCING LARGE HAIL AND DAMAGING WINDS ARE STILL POSSIBLE IN THESE AREAS. POWERS
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 3:25 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Pierce | 45 min |
| Apr 12, 4:10 PM CDT | Severe Thunderstorm Warning | OAX | Cedar, Pierce | 45 min |
| Apr 12, 5:58 PM CDT | Severe Thunderstorm Warning | OAX | Dodge | 32 min |
| Apr 12, 6:15 PM CDT | Severe Thunderstorm Warning | OAX | Burt, Washington | 45 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.