Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 175, NWS North Platte, NE

June 24, 1998Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 24, 1998, 6:35 PM MDT for Cherry County, Nebraska. It was in force for 65 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 24, 1998, 6:35 PM MDT (00:35 UTC)
Expired: Jun 24, 1998, 7:40 PM MDT
In force: 65 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Cherry County, NE

The radar

The North Platte radar (KLNX), 79 km from the middle of the area, began a volume at 00:34 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 24, 6:40 PM MDT	Hail 0.75	Merriman, NE	Large tree limbs blown down

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.

Issued	Product	Office	Lasted
Jun 24, 3:00 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.6 hours before the alert went out and 163 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: 1459 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 2269 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

497 
WUUS1 KLBF 250032 RRA
SVRLBF
NEC031-250140-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
735 PM CDT (635 PM MDT) WED JUN 24 1998

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA

* UNTIL 840 PM CDT

* AT 734 PM CDT... NORTH PLATTE DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 51 MILES EAST NORTHEAST OF ALLIANCE OR 33 MILES
  SOUTH SOUTHWEST OF MERRIMAN MOVING EAST AT 25 MPH.

* THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS WEST OF HIGHWAY
  61.

SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. GO INSIDE A STURDY BUILDING AND
STAY AWAY FROM WINDOWS

FS

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 24, 2:26 PM MDT, 4 hours 9 minutes earlier.

Area forecast discussion, Jun 24, 2:26 PM MDT, 4 hours 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
326 PM CDT WED JUN 24 1998

FORECAST PROBLEMS ARE POPS AND TEMPERATURES

THE 18Z SURFACE ANALYSIS SHOWS LOW PRESSURE OVER LBF WITH A WARM FRONT
EXTENDING NORTHEAST INTO NORTHEAST NEBRASKA AND A DRYLINE EXTENDING
SOUTH INTO WESTERN KANSAS. DEWPOINTS WERE STILL IN THE 60S ACROSS MOST
OF THE FA WITH 70S IN THE NORTHEAST PART OF NEBRASKA. MUCH DRIER
DEWPOINTS WERE JUST SOUTH IN GLD. WATER VAPOR IMAGERY SHOWED A
SHORTWAVE OVER WESTERN COLORADO AND THUNDERSTORMS HAVE ALREADY FIRED
OVER GRANT COUNTY.

THE ETA MODEL IS PREFERRED SINCE THE NGM IS TOO FAR NORTH WITH THE
SURFACE LOW BY 24 HOURS. SURFACE LOW IS PROGGED BY ETA TO MOVE INTO
SOUTHCENTRAL NEBRASKA TONIGHT AND THEN INTO NORTHEAST NEBRASKA
THURSDAY. LOW REDEVELOPS TO THE WEST OVER NORTHWEST KANSAS THURSDAY
NIGHT AS UPPER TROUGH MOVES INLAND FROM THE PACIFIC NORTHWEST. SURFACE
LOW WILL MOVE INTO VTN AREA ON FRIDAY. SHORTWAVE WILL MOVE THROUGH FA
TONIGHT WITH A LULL ON THURSDAY. LATE THURSDAY NIGHT ANOTHER VORT WILL
MOVE INTO THE FA BUT 700 TEMPERATURES ARE VERY WARM EXCEPT FOR THE
PANHANDLE. SHORTWAVE WILL CONTINUE TO AFFECT FA ON FRIDAY. MOISTURE
WILL ALSO BE LACKING FOR THUNDERSTORM DEVELOPMENT WITH MEAN RH ONLY 30
PERCENT SO WILL WORD ISOLATED OR WIDELY SCATTERED.

WITH MOSTLY SUNNY SKIES AND WESTERLY WIND WILL GENERALLY GO WITH WARMER
FAN TEMPERATURES.

PRELIMINARY GUIDANCE FOR COORDINATION ONLY. OFFICIAL FORECASTS ARE
CONTAINED WITHIN PRODUCT OMAZFPNE...

CCF
LBF UU 061/093 063/097 064 1-2
OGA UU 060/093 062/096 063 --2
IML UU 061/094 063/097 065 --2
VTN UU 059/091 063/095 063 2-2
ONL UU 061/093 065/094 065 3--
ANW UU 060/092 064/094 064 3--
BBW UU 061/093 064/096 064 2--

FS

In the hours before

Local storm report, Jun 24, 4:25 PM MDT, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
525 PM CDT WED JUN 24 1998

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

0455 PM    3 W THEDFORD              NE   1.00 INCH HAIL
06/24/98   THOMAS

KAR

Local storm report, Jun 24, 4:25 PM MDT, 2 hours 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
525 PM CDT WED JUN 24 1998

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

0455 PM    3 W THEDFORD              NE   1.00 INCH HAIL
06/24/98   THOMAS

KAR

Local storm report, Jun 24, 4:49 PM MDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
549 PM CDT WED JUN 24 1998

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

0542 PM    5 S OSHKOSH               NE   0.75 INCH HAIL
06/24/98   GARDEN

KAR

Local storm report, Jun 24, 4:49 PM MDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
549 PM CDT WED JUN 24 1998

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

0542 PM    5 S OSHKOSH               NE   0.75 INCH HAIL
06/24/98   GARDEN

KAR

Local storm report, Jun 24, 5:06 PM MDT, 1 hour 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
606 PM CDT WED JUN 24 1998

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

0602 PM    LEWELLEN                  NE   1.00 INCH HAIL
06/24/98   GARDEN

KAR

Local storm report, Jun 24, 5:06 PM MDT, 1 hour 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
606 PM CDT WED JUN 24 1998

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

0602 PM    LEWELLEN                  NE   1.00 INCH HAIL
06/24/98   GARDEN

KAR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 6:04 PM MDT	Severe Thunderstorm Warning	LBF	Sheridan	61 min
Jun 24, 6:28 PM MDT	Severe Thunderstorm Warning	LBF	Holt	62 min
Jun 24, 6:43 PM MDT	Severe Thunderstorm Warning	LBF	Boyd	47 min
Jun 24, 6:57 PM MDT	Tornado Warning	LBF	Holt	33 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.