Alert archive / Nebraska / Tornado Warnings in 1998

Tornado Warning 59, NWS Omaha, NE

June 24, 1998Knox County, Nebraska

NWS Omaha, NE issued this tornado warning at Jun 24, 1998, 7:53 PM CDT for Knox County, Nebraska. It was in force for 62 min. 2 reports 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 24, 1998, 7:53 PM CDT (00:53 UTC)
Expired
Jun 24, 1998, 8:55 PM CDT
In force
62 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Knox County, NE

What was reported inside it

TimeReportWhereRemark
Jun 24, 8:21 PM CDTHail 1.75Verdigre, NE
Jun 24, 8:30 PM CDTHail 0.88Niobrara, 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.

IssuedProductOfficeLasted
Jun 24, 6:30 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.9 hours before the alert went out and 255 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.

Skew-T log-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 1998-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6538 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 1998-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
6538 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
857 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
1.1
Supercell composite
5.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KOMA 250053 RRA
TOROMA
NEC107-250155-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
753 PM CDT WED JUN 24 1998

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  KNOX COUNTY IN NORTHEASTERN NEBRASKA

* UNTIL 855 PM CDT

* AT 752 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A DEVELOPING TORNADO 17 MILES EAST NORTHEAST OF O NEILL OR 17
  MILES WEST OF VERDIGRE MOVING EAST AT 30 MPH.

* NO TOWNS ARE IN THE TORNADO PATH...BUT IT SHOULD AFFECT RURAL
  AREAS.

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.

MEAD

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

Local storm report, Jun 24, 2:15 PM CDT, 5 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT  ...ADDITIONAL STORM REPORTS
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
215 PM CDT WED JUN 24 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1022 PM    HOWELLS                   NE   61 MPH TSTM GUST
06/23/98   COLFAX                         THUNDERSTORM GUST.

1045 PM    OAKLAND                   NE   65 MPH TSTM GUST
06/23/98   BURT                           NUMEROUS TREES DAMAGED.
                                          REPORTED BY COOP OBSERVER
Local storm report, Jun 24, 2:15 PM CDT, 5 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT  ...ADDITIONAL STORM REPORTS
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
215 PM CDT WED JUN 24 1998

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1022 PM    HOWELLS                   NE   61 MPH TSTM GUST
06/23/98   COLFAX                         THUNDERSTORM GUST.

1045 PM    OAKLAND                   NE   65 MPH TSTM GUST
06/23/98   BURT                           NUMEROUS TREES DAMAGED.
                                          REPORTED BY COOP OBSERVER
Special weather statement, Jun 24, 5:13 PM CDT, 2 hours 40 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093-
IAZ043-055-056-069-079-080-090-091-251200-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
513 PM CDT WED JUN 24 1998

...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA...

SPOTTER ACTION...
STORM SPOTTER ACTIVATION MAY BE REQUIRED THIS EVENING OR TONIGHT IN
EASTERN NEBRASKA AND SOUTHWEST IOWA.

DISCUSSION...
LATE THIS AFTERNOON...AN AREA OF LOW PRESSURE WAS OVER CENTRAL NEBRASKA
WITH A WARM FRONT EXTENDING EAST ACROSS NORTHEASTERN NEBRASKA AND
WESTERN IOWA.  A DRYLINE ALSO EXTENDED SOUTH FROM THE SURFACE LOW INTO
CENTRAL KANSAS.  THUNDERSTORMS HAVE DEVELOPED OVER NORTH CENTRAL
NEBRASKA THIS AFTERNOON AND ARE EXPECTED TO MOVE NORTHEAST ALONG THE
WARM FRONT TONIGHT.  THEREFORE...THE GREATEST RISK OF SEVERE WEATHER
WILL BE OVER THE NORTHEASTERN PART OF THE OUTLOOK AREA...GENERALLY
NORTH OF A NORFOLK TO PENDER TO ONAWA IOWA LINE.

FARTHER SOUTH ALONG THE DRYLINE...WARM TEMPERATURES IN THE UPPER LEVELS
OF THE ATMOSPHERE ARE EXPECTED TO LIMIT THUNDERSTORM ACTIVITY.
HOWEVER...IF THUNDERSTORMS ARE ABLE TO DEVELOP...THEY WILL HAVE A GOOD
CHANCE OF BECOMING SEVERE.

LARGE HAIL AND DAMAGING WINDS WILL BE THE GREATEST THREAT FROM THESE
STORMS...BUT A FEW TORNADOES WILL BE POSSIBLE...ESPECIALLY WITH STORMS
MOVING ALONG THE WARM FRONT.

MEAD

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 24, 7:46 PM CDTSevere Thunderstorm WarningOAXAntelope, Knox64 min
Jun 24, 8:47 PM CDTSevere Thunderstorm WarningOAXJefferson48 min
Jun 24, 9:46 PM CDTSevere Thunderstorm WarningOAXButler49 min
Jun 24, 9:56 PM CDTSevere Thunderstorm WarningOAXDodge, Saunders64 min
Jun 24, 10:06 PM CDTSevere Thunderstorm WarningOAXBurt, Washington64 min
Jun 24, 10:40 PM CDTSevere Thunderstorm WarningOAXPawnee, Richardson65 min
Jun 24, 10:52 PM CDTSevere Thunderstorm WarningOAXNemaha63 min
Jun 24, 11:53 PM CDTFlash Flood WarningOAXDodge4 hr
Jun 25, 12:49 AM CDTSevere Thunderstorm WarningOAXBurt36 min
Jun 25, 12:54 AM CDTSevere Thunderstorm WarningOAXRichardson46 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.