Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 111, NWS North Platte, NE

June 11, 1998Brown County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 11, 1998, 4:16 PM CDT for Brown County, Nebraska. It was in force for 64 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
Jun 11, 1998, 4:16 PM CDT (21:16 UTC)
Expired
Jun 11, 1998, 5:20 PM CDT
In force
64 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Brown County, NE

The radar

The North Platte radar (KLNX), 75 km from the middle of the area, began a volume at 21:19 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
Jun 11, 4:50 PM CDTHail 0.88Ainsworth, 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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.3 hours before the alert went out and 155 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, N. Platte/Lee Bi, NE at 12:00Z on 1998-06-11Temperature 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, N. Platte/Lee Bi, NE at 12:00Z on 1998-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
1878 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
-1 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.

507 
WUUS1 KLBF 112115 RRA
SVRLBF
NEC017-112220-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
416 PM CDT THU JUN 11 1998

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 520 PM CDT

* AT 414 PM CDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 25 MILES SOUTHWEST OF AINSWORTH OR 5 MILES WEST
  SOUTHWEST OF MOON LAKE MOVING EAST SOUTHEAST AT 35 MPH.

* DAMAGING HAIL AND/OR DESTRUCTIVE WINDS CAN BE EXPECTED NEAR...
  MOON LAKE                    BY 420 PM CDT

THIS STORM HAS A HISTORY OF LARGE HAIL. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

RLB

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.

NWS North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 2:14 PM CDT, 2 hours 2 minutes earlier.

Area forecast discussion, Jun 11, 2:14 PM CDT, 2 hours 2 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
213 PM CDT (113 PM MDT) THU JUN 11 1998

...MAIN PROBLEM WILL BE PREDICTING TRACK OF INCOMING TROUGH...

AVN DIFFERENT FROM ETA/NGM IN HANDLING OF NEXT SYSTEM.  TEND TO
BELIEVE ETA/NGM SOLUTION WITH STRONGER SYSTEM COMING OUT FURTHER
TO THE SOUTH...ESPECIALLY WHEN EXAMINING THIS AFTERNOONS GOES 9
WATER VAPOR LOOP.  THIS WILL LIKELY RESULT IN WARMER DAY SATURDAY
THAN MODELS INDICATE.  ALSO...850 MB MOISTURE FIELDS LOOK QUITE
DRY FOR FRIDAY AND SATURDAY...AND WILL KEEP POPS OUT FOR DAYTIME
FRIDAY.  EXCEPTION WILL BE IN THE NORTH...NEAR THE COLD POOL
ALOFT...WHERE THIS AFTERNOONS ACTIVITY IN THE PANHANDLE INCICATES
THAT EVEN WITH LIMITED MOISTURE...CONVECTIVE ACTIVITY WILL OCCUR.
WILL WORD FOR AFTERNOON ACTIVITY.  POSITION EAST OF RIDGE AXIS
WILL LIKELY MAKE ANY ACTIVITY THAT DOES DEVELOP WIDELY SCATTERED
AT BEST.

DIFFICULT AT THIS TIME TO DETERMINE WHETHER THE LEAD WAVE SHOWN BY
THE ETA AT 48 HOURS IS PURELY CONVECTIVE FEEDBACK...OR IF IT MAY
HAVE SOME HINT OF REALITY.  FOR NOW...WILL CHOOSE TO IGNORE THIS
FEATURE OWING TO THE FACT THAT THE ORIGIN IS OFF THE COAST...AND
THEREFORE CONFIDENCE IS LOW.

WE HAVE CONVECTION FIRING IN TWO AREAS AS OF 19Z...SO NEED TO CUT
THIS OFF.  WILL SEND WORKZONES BY 315 PM.

PRELIMINARY NUMBERS BELOW:

PRELIMNARY GUIDANCE FOR COORDINATION ONLY.  OFFICIAL FORECAST IS
CONTAINED WITHIN THE PRODUCT OMAZFPNE.

LBF BB 49/84/52/85/50 1/1/3/3
VTN BB 48/80/49/84/48 3/2/2/3
ONL BB 50/82/54/85/55 5/2/2/3
IML BB 50/86/53/87/52 2/1/3/3

SPARKER

In the hours before

Special weather statement, Jun 11, 10:55 AM CDT, 5 hours 21 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-121200-

SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA...
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1055 AM CDT THU JUN 11 1998

THIS OUTLOOK PERTAINS TO THE FOLLOWING NEBRASKA COUNTIES...

ARTHUR     BLAINE     BOYD       BROWN      CHASE      CHERRY
CUSTER     DEUEL      FRONTIER   GARDEN     GARFIELD   GRANT
HAYES      HOLT       HOOKER     KEITH      KEYA PAHA  LINCOLN
LOGAN      LOUP       MCPHERSON  PERKINS    ROCK       SHERIDAN
THOMAS     WHEELER

...STORM SPOTTER ACTIVATION IS NOT ANTICIPATED THIS AFTERNOON OR
TONIGHT...

THERE IS A CHANCE FOR THUNDERSTORMS THIS AFTERNOON AND INTO THIS
EVENING OVER PORTIONS OF NORTH CENTRAL AND WESTERN NEBRASKA. THE
GREATEST THREAT OF THUNDERSTORMS IS GENERALLY EAST OF A LINE FROM NEAR
VALENTINE...TO THEDFORD...TO NORTH PLATTE...TO CURTIS.  THESE
THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS.

DRIER AND MORE STABLE AIR IS SFLOWLY MOVING INTO THE OUTLOOK AREA FROM
THE WEST BEHIND A LOW PRESSURE TROUGH AS AN UPPER AIR DISTURBANCE WAS
MOVING EAST OUT OF THE STATE. THIS WILL END THE THREAT OF THUNDERSTORMS
OVER ALL OF THE OUTLOOK AREA BY LATE EVENING.

BOWMAN
Special weather statement, Jun 11, 10:55 AM CDT, 5 hours 21 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-121200-

SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA...
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1055 AM CDT THU JUN 11 1998

THIS OUTLOOK PERTAINS TO THE FOLLOWING NEBRASKA COUNTIES...

ARTHUR     BLAINE     BOYD       BROWN      CHASE      CHERRY
CUSTER     DEUEL      FRONTIER   GARDEN     GARFIELD   GRANT
HAYES      HOLT       HOOKER     KEITH      KEYA PAHA  LINCOLN
LOGAN      LOUP       MCPHERSON  PERKINS    ROCK       SHERIDAN
THOMAS     WHEELER

...STORM SPOTTER ACTIVATION IS NOT ANTICIPATED THIS AFTERNOON OR
TONIGHT...

THERE IS A CHANCE FOR THUNDERSTORMS THIS AFTERNOON AND INTO THIS
EVENING OVER PORTIONS OF NORTH CENTRAL AND WESTERN NEBRASKA. THE
GREATEST THREAT OF THUNDERSTORMS IS GENERALLY EAST OF A LINE FROM NEAR
VALENTINE...TO THEDFORD...TO NORTH PLATTE...TO CURTIS.  THESE
THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS.

DRIER AND MORE STABLE AIR IS SFLOWLY MOVING INTO THE OUTLOOK AREA FROM
THE WEST BEHIND A LOW PRESSURE TROUGH AS AN UPPER AIR DISTURBANCE WAS
MOVING EAST OUT OF THE STATE. THIS WILL END THE THREAT OF THUNDERSTORMS
OVER ALL OF THE OUTLOOK AREA BY LATE EVENING.

BOWMAN
Local storm report, Jun 11, 4:12 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
412 PM CDT THU JUN 11 1998

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

0358 PM    11 NE BROWNLEE            NE   0.88 INCH HAIL
06/11/98   CHERRY

BOWMAN
Local storm report, Jun 11, 4:12 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
412 PM CDT THU JUN 11 1998

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

0358 PM    11 NE BROWNLEE            NE   0.88 INCH HAIL
06/11/98   CHERRY

BOWMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 3:25 PM CDTSevere Thunderstorm WarningLBFCherry45 min
Jun 11, 4:09 PM CDTSevere Thunderstorm WarningLBFCherry31 min
Jun 11, 4:44 PM CDTSevere Thunderstorm WarningLBFRock46 min
Jun 11, 5:13 PM CDTSevere Thunderstorm WarningLBFHolt47 min
Jun 11, 5:58 PM CDTSevere Thunderstorm WarningLBFHolt47 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.