Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 172, NWS North Platte, NE

August 13, 1997Blaine County, Brown County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 13, 1997, 12:53 PM CDT for Blaine County, Brown County, Nebraska. It was in force for 47 min. 4 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
Aug 13, 1997, 12:53 PM CDT (17:53 UTC)
Expired
Aug 13, 1997, 1:40 PM CDT
In force
47 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Blaine County, NE, Brown County, NE

The radar

The North Platte radar (KLNX), 57 km from the middle of the area, began a volume at 17:55 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
Aug 13, 12:55 PM CDTHail 0.75Long Pine, NE
Aug 13, 1:02 PM CDTHail 0.75Brewster, NE
Aug 13, 1:08 PM CDTHail 1.75Ainsworth, NE
Aug 13, 1:40 PM CDTHail 0.75Brewster, 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, 5.9 hours before the alert went out and 128 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 1997-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 95 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, N. Platte/Lee Bi, NE at 12:00Z on 1997-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 177 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
95 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
834 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 131754 RRA
SVRLBF
NEC009-017-131840-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1253 PM CDT WED AUG 13 1997

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 140 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTH CENTRAL NEBRASKA

   ...NORTHEASTERN BLAINE COUNTY
   ...SOUTHEASTERN BROWN COUNTY
 
AT 1250 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY NORTH
PLATTE DOPPLER RADAR 31 MILES SOUTH SOUTHEAST OF AINSWORTH OR 14
MILES NORTH NORTHEAST OF BREWSTER MOVING EAST NORTHEAST AT 30 MPH.

THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.

AT 1245 PM CDT NICKEL-SIZED HAIL WAS REPORTED 10 MILES NORTH OF
BREWSTER.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE STORM IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.  STAY
INSIDE AWAY FR*OM WINDOWS UNTIL THE STORM HAS PASSED.

&
SLM

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 Aug 13, 12:01 PM CDT, 52 minutes earlier.

Area forecast discussion, Aug 13, 12:01 PM CDT, 52 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1159 AM CDT (1059 AM MDT) WED AUG 13 1997

UPDATED CURRENT SET OF ZONES FOR AFTERNOON WEATHER. MAY NEED TO
UPDATE AGAIN SHORTLY WITH NEW STORMS DEVELOPING QUICKLY ON BACK
SIDE OF SHOWERS AND ALSO ALONG A LINE FROM THEDFORD TO EAST OF
STAPLETON. THIS LATTER MENTIONED LINE APPEARS TO BE THE RESULT OF
A DIFFERNTIAL HEATING BOUNDARY SET UP BY PATCH OF STRATUS THAT
DISSIPATED N OF OGA EARLIER...IN FACT A NICE BOUNDARY SHOWS UP ON
1KM VIS PICS. WILL ALSO NEED TO WATCH INTERACTION OF WAVE CLOUDS
COMING ACROSS NORTHERN CO WHEN THEY MEET UP WITH TROF AXIS BY MID
AFTERNOON OR SO.

STOPPKOTTE

In the hours before

Special weather statement, Aug 13, 7:01 AM CDT, 5 hours 52 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-141200-

SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA
NATIONAL WEATHER SERVICE NORTH PLATTE NE
700 AM CDT (600 AM MDT) WED AUG 13 1997

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 MAY BE REQUIRED IN CENTRAL AND WESTERN
NEBRASKA TODAY AND TONIGHT...

A SURFACE TROUGH IS EXPECTED TO MOVE INTO NEBRASKA FROM THE WEST AND
TRIGGER SCATTERED THUNDERSTORMS LATE THIS AFTERNOON AND INTO TONIGHT.
SEVERE THUNDERSTORMS ARE POSSIBLE ALONG AND WEST OF A LINE FROM
VALENTINE TO BURWELL. HAIL AND DAMAGING WIND ARE THE PRIMARY THREATS IN
ISOLATED SEVERE THUNDERSTORMS.

SHOWERS AND THUNDERSTORMS IN NORTH CENTRAL NEBRASKA EARLY THIS MORNING
COULD PRODUCE ISOLATED HEAVY RAIN...BUT LARGE HAIL AND DAMAGING WIND ARE
UNLIKELY.

ON THURSDAY...THE SLIGHT RISK WILL SHIFT TO THE AREA EAST OF A LINE
FROM SPENCER TO BURWELL.

SPRINGER
Special weather statement, Aug 13, 11:04 AM CDT, 1 hour 49 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-141200-

SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1104 AM CDT (1004 AM MDT) WED AUG 13 1997

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 MAY BE NEEDED IN PARTS OF WESTERN AND
SOUTHWEST NEBRASKA LATE THIS AFTERNOON INTO TONIGHT...

THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS WEST OF A LINE FROM
VALENTINE TO BROKEN BOW. SCATTERED THUNDERSTORMS WILL BE POSSIBLE
ACROSS THE REMAINDER OF THE AREA AS WELL...BUT ARE NOT EXPECTED TO
REACH SEVERE LIMITS.

SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL CONTINUE TO MOVE EAST
ACROSS PARTS OF NORTH CENTRAL NEBRASKA INTO THE THE AFTERNOON...MAINLY
EAST OF A LINE FROM AINSWORTH TO BURWELL. THESE SHOWERS AND
THUNDERSTORMS ARE NOT EXPECTED TO PRODUCE SEVERE WEATHER.

FURTHER WEST...AN AREA OF LOW PRESSURE IS EXPECTED TO DEVELOP IN THE
EASTERN PANHANDLE BY LATE AFTERNOON. AHEAD OF THIS AREA OF LOW
PRESSURE...SOUTHERLY WINDS WILL TRANSPORT ABUNDANT MOISTURE INTO THE
AREA. WITH AN UPPER LEVEL DISTURBANCE PASSING THROUGH THE AREA AS
WELL...THUNDERSTORMS ARE EXPECTED TO DEVELOP BY LATE AFTERNOON.  THE
BEST INSTABILITY WILL RESIDE WEST OF A LINE FROM VALENTINE TO BROKEN
BOW BY AFTERNOON AS WELL...RESULTING IN A POSSIBILITY FOR LARGE HAIL
AND DAMAGING WINDS.

STOPPKOTTE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 1:37 PM CDTSevere Thunderstorm WarningLBFBlaine33 min
Aug 13, 2:10 PM CDTTornado WarningLBFLoup30 min
Aug 13, 2:41 PM CDTSevere Thunderstorm WarningLBFLoup34 min
Aug 13, 2:55 PM CDTSevere Thunderstorm WarningLBFBlaine, Brown50 min
Aug 13, 2:59 PM CDTSevere Thunderstorm WarningLBFCuster, Logan51 min
Aug 13, 3:49 PM CDTSevere Thunderstorm WarningLBFCuster61 min
Aug 13, 4:32 PM CDTSevere Thunderstorm WarningLBFLoup48 min
Aug 13, 4:50 PM CDTSevere Thunderstorm WarningLBFCuster60 min
Aug 13, 5:26 PM CDTSevere Thunderstorm WarningLBFGarfield, Loup64 min
Aug 13, 5:53 PM CDTTornado WarningLBFCuster32 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997Every severe thunderstorm warning in 1997

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.