Alert archive / Nebraska / Tornado Watches in 1998

Tornado Watch 569

June 13, 199825 counties in Nebraska

The Storm Prediction Center issued this tornado watch at Jun 13, 1998, 5:30 PM CDT for 25 counties in Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 13, 1998, 5:30 PM CDT (22:30 UTC)
Expired
Jun 13, 1998, 10:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 25 counties

Adams County, NE, Boone County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Dodge County, NE, Fillmore County, NE, Gage County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Howard County, NE, Jefferson County, NE, Lancaster County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Webster County, NE, York County, NE

Warnings issued inside it

20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 13, 5:36 PM CDTSevere Thunderstorm WarningGIDNuckolls44 min
Jun 13, 5:44 PM CDTTornado WarningGIDWebster31 min
Jun 13, 5:55 PM CDTTornado WarningGIDNuckolls50 min
Jun 13, 6:01 PM CDTTornado WarningGIDAdams29 min
Jun 13, 6:22 PM CDTTornado WarningGIDThayer48 min
Jun 13, 6:45 PM CDTTornado WarningOAXJefferson50 min
Jun 13, 7:17 PM CDTTornado WarningOAXGage48 min
Jun 13, 7:45 PM CDTSevere Thunderstorm WarningGIDHall, Howard45 min
Jun 13, 7:59 PM CDTSevere Thunderstorm WarningGIDAdams, Franklin61 min
Jun 13, 7:59 PM CDTSevere Thunderstorm WarningGIDHall61 min
Jun 13, 8:06 PM CDTSevere Thunderstorm WarningGIDMerrick, Nance54 min
Jun 13, 8:12 PM CDTTornado WarningGIDAdams, Webster48 min
Jun 13, 8:33 PM CDTSevere Thunderstorm WarningGIDPolk47 min
Jun 13, 8:37 PM CDTSevere Thunderstorm WarningGIDClay, Hamilton63 min
Jun 13, 8:40 PM CDTSevere Thunderstorm WarningOAXPlatte50 min
Jun 13, 9:26 PM CDTSevere Thunderstorm WarningGIDHamilton34 min
Jun 13, 9:37 PM CDTSevere Thunderstorm WarningGIDClay33 min
Jun 13, 9:47 PM CDTSevere Thunderstorm WarningGIDFillmore63 min
Jun 13, 9:54 PM CDTSevere Thunderstorm WarningGIDYork66 min
Jun 13, 9:58 PM CDTSevere Thunderstorm WarningOAXSaline, Seward47 min

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.5 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 12:00Z on 1998-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1998-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1624 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
41 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

887 
WWUS9 KMKC 132159
SEL9  
MKC WW 132159
NEZ000-140300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 569
STORM PREDICTION CENTER NORMAN OK
459 PM CDT SAT JUN 13 1998

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

   CENTRAL AND EASTERN NEBRASKA                           

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 530 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES EITHER SIDE OF
A LINE FROM 30 MILES WEST OF GRAND ISLAND NEBRASKA TO 25 MILES EAST
OF LINCOLN NEBRASKA.

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. 
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

OTHER WATCH INFORMATION...  CONTINUE...WW 564...WW 565...WW
566...WW 567...WW 568...

DISCUSSION...SUPERCELL ALONG THE KS/NEB BORDER WILL MOVE INTO WW
DURING THE NEXT HOUR. OTHER STORMS ARE EXPECTED TO FORM THIS
EVENING AS UPPER SYSTEM APPROACHES FROM THE WEST. STRENGTHENING
SHEAR PROFILES WILL SUPPORT ISOLATED TORNADOES. 


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 25030.


...VESCIO

415,0984 414,0961 395,0962 400,0985

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 13, 3:30 PM CDTTornado WatchSPCArthur, Banner, Blaine, Box Butte, Buffalo, Cheyenne and 30 more7 hr

Nearby

Tornado Watches in Nebraska, 1998Every tornado watch 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.