Alert archive / Nebraska / Tornado Warnings in 1998

Tornado Warning 9, NWS Hastings, NE

May 11, 19984 counties in Nebraska

NWS Hastings, NE issued this tornado warning at May 11, 1998, 8:58 PM CDT for 4 counties in Nebraska. It was in force for 47 min. 6 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
May 11, 1998, 8:58 PM CDT (01:58 UTC)
Expired
May 11, 1998, 9:45 PM CDT
In force
47 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Hamilton County, NE, Merrick County, NE, Polk County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 95 km from the middle of the area, began a volume at 01:58 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

TimeReportWhereRemark
May 11, 9:00 PM CDTHail 2Aurora, NE
May 11, 9:05 PM CDTHail 0.75Central City, NE
May 11, 9:08 PM CDTHail 1Mc Cool Jct, NE
May 11, 9:09 PM CDTHail 2Bradshaw, NE
May 11, 9:10 PM CDTHail 0.75Shelby, NE
May 11, 9:52 PM CDTHail 0.75Polk, 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
May 11, 5:00 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.0 hours before the alert went out and 125 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, Omaha, NE at 00:00Z on 1998-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 294 joules per kilogram.LCLLFCEL10008507005003002001001 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, Omaha, NE at 00:00Z on 1998-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.193958Sfc1 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
294 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1842 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
226 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGRI 120203 RRA
TORGRI
NEC049-081-121-185-120245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
858 PM CDT MON MAY 11 1998

THE NATIONAL WEATHER SERVICE IN HASTINGS NE HAS ISSUED A

* TORNADO WARNING FOR PEOPLE IN...
     EASTERN HAMILTON COUNTY IN SOUTH CENTRAL NEBRASKA
     EASTERN MERRICK COUNTY IN SOUTH CENTRAL NEBRASKA
     YORK COUNTY IN SOUTH CENTRAL NEBRASKA
     POLK COUNTY IN SOUTH CENTRAL NEBRASKA

* UNTIL 945 PM CDT

* AT 852 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  POSSIBLE TORNADO 18 MILES WEST OF YORK...OR 5 MILES NORTH OF       
  STOCKHAM...MOVING NORTHEAST AT 35 MILES PER HOUR. ANOTHER SEVERE   
  THUNDERSTORM WITH A POSSIBLE TORNADO 15 MILES SOUTHWEST OF YORK.


* THE TORNADO IS EXPECTED TO BE NEAR...
  CENTRAL CITY AT 855 PM CDT
  HAMPTON AT 900 PM CDT
  BRADSHAW AT 910 PM CDT
  YORK AT 925 PM CDT
  BENEDICT AT 925 PM CDT
  
TAKE SHELTER IMMEDIATELY IN A BASEMENT. IF A BASEMENT IS NOT
AVAILABLE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. STAY
AWAY FROM WINDOWS.

STAY TUNED TO LOCAL MEDIA OUTLETS OR NOAA WEATHER RADIO FOR THE
LATEST SEVERE WEATHER INFORMATION.

TO REPORT SEVERE WEATHER...HAVE THE lNEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN HASTINGS
NE.

DEG
1 follow-up statement
841 
WFUS1 KGRI 120216 RRB
TORGRI
NEC081-121-143-185-120245-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTED FOR COUNTY CODE
NATIONAL WEATHER SERVICE HASTINGS NE
858 PM CDT MON MAY 11 1998
 
THE NATIONAL WEATHER SERVICE IN HASTINGS NE HAS ISSUED A
 
* TORNADO WARNING FOR PEOPLE IN...
     EASTERN HAMILTON COUNTY IN SOUTH CENTRAL NEBRASKA
     EASTERN MERRICK COUNTY IN SOUTH CENTRAL NEBRASKA
     YORK COUNTY IN SOUTH CENTRAL NEBRASKA
     POLK COUNTY IN SOUTH CENTRAL NEBRASKA
 
* UNTIL 945 PM CDT
 
* AT 852 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  POSSIBLE TORNADO 18 MILES WEST OF YORK...OR 5 MILES NORTH OF       
  STOCKHAM...MOVING NORTHEAST AT 35 MILES PER HOUR. ANOTHER SEVERE   
  THUNDERSTORM WITH A POSSIBLE TORNADO 15 MILES SOUTHWEST OF YORK.
 
 
* THE TORNADO IS EXPECTED TO BE NEAR...
  CENTRAL CITY AT 855 PM CDT
  HAMPTON AT 900 PM CDT
  BRADSHAW AT 910 PM CDT
  YORK AT 925 PM CDT
  BENEDICT AT 925 PM CDT
  
TAKE SHELTER IMMEDIATELY IN A BASEMENT. IF A BASEMENT IS NOT
AVAILABLE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. STAY
AWAY FROM WINDOWS.
 
STAY TUNED TO LOCAL MEDIA OUTLETS OR NOAA WEATHER RADIO FOR THE
LATEST SEVERE WEATHER INFORMATION.
 
TO REPORT SEVERE WEATHER...HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN HASTINGS
NE.
 
DEG

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 7:01 PM CDTTornado WarningGIDHall44 min
May 11, 7:13 PM CDTTornado WarningGIDAdams47 min
May 11, 7:22 PM CDTTornado WarningGIDMerrick38 min
May 11, 7:28 PM CDTSevere Thunderstorm WarningGIDNuckolls62 min
May 11, 7:32 PM CDTSevere Thunderstorm WarningGIDClay58 min
May 11, 7:34 PM CDTSevere Thunderstorm WarningGIDHamilton56 min
May 11, 7:52 PM CDTSevere Thunderstorm WarningGIDNance38 min
May 11, 8:03 PM CDTSevere Thunderstorm WarningGIDThayer57 min
May 11, 8:10 PM CDTSevere Thunderstorm WarningGIDFillmore65 min
May 11, 8:19 PM CDTTornado WarningGIDHamilton, Merrick41 min
May 11, 8:44 PM CDTSevere Thunderstorm WarningGIDMerrick46 min
May 11, 9:03 PM CDTTornado WarningGIDThayer27 min
May 11, 9:25 PM CDTSevere Thunderstorm WarningGIDThayer35 min
May 11, 9:45 PM CDTSevere Thunderstorm WarningGIDPolk, York45 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; radar from the NEXRAD Level II archive.