Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 114, NWS North Platte, NE

June 11, 1998Holt County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 11, 1998, 5:58 PM CDT for Holt County, Nebraska. It was in force for 47 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, 5:58 PM CDT (22:58 UTC)
Expired: Jun 11, 1998, 6:45 PM CDT
In force: 47 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Holt County, NE

The radar

The North Platte radar (KLNX), 158 km from the middle of the area, began a volume at 23:01 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

Time	Report	Where	Remark
Jun 11, 6:05 PM CDT	Hail 1	Chambers, 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, 11.0 hours before the alert went out and 211 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

134 
WUUS1 KLBF 112257 RRA
SVRLBF
NEC089-112345-

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

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 645 PM CDT

* AT 557 PM CDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 19 MILES SOUTH OF O NEILL OR 4 MILES SOUTHEAST OF
  CHAMBERS MOVING EAST AT 20 MPH.

* THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. 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, 3 hours 44 minutes earlier.

Area forecast discussion, Jun 11, 2:14 PM CDT, 3 hours 44 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

Local storm report, Jun 11, 4:12 PM CDT, 1 hour 46 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, 1 hour 46 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, 5:09 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
509 PM CDT THU JUN 11 1998

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

0450 PM    6 WSW BASSETT             NE   0.88 INCH HAIL
06/11/98   ROCK

SP

Local storm report, Jun 11, 5:09 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
509 PM CDT THU JUN 11 1998

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

0450 PM    6 WSW BASSETT             NE   0.88 INCH HAIL
06/11/98   ROCK

SP

Local storm report, Jun 11, 5:20 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
520 PM CDT THU JUN 11 1998

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

0450 PM    21 SSW AINSWORTH          NE   0.88 INCH HAIL
06/11/98   BROWN

SP

Local storm report, Jun 11, 5:20 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
520 PM CDT THU JUN 11 1998

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

0450 PM    21 SSW AINSWORTH          NE   0.88 INCH HAIL
06/11/98   BROWN

SP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 3:25 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	45 min
Jun 11, 4:09 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	31 min
Jun 11, 4:16 PM CDT	Severe Thunderstorm Warning	LBF	Brown	64 min
Jun 11, 4:44 PM CDT	Severe Thunderstorm Warning	LBF	Rock	46 min
Jun 11, 5:13 PM CDT	Severe Thunderstorm Warning	LBF	Holt	47 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1998 Every 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.