Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 203, NWS North Platte, NE

August 22, 1997Brown County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 22, 1997, 7:23 PM CDT for Brown County, Nebraska. It was in force for 62 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: Aug 22, 1997, 7:23 PM CDT (00:23 UTC)
Expired: Aug 22, 1997, 8:25 PM CDT
In force: 62 min
Issued by: NWS North Platte, NE
Area: Whole counties

County Brown County, NE

What was reported inside it

Time	Report	Where	Remark
Aug 22, 8:00 PM CDT	Hail 0.88	Johnstown, 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 00:00Z, 0.4 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-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: 1907 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1169 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 13.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 230022 RRA
SVRLBF
NEC017-230125-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
723 PM CDT FRI AUG 22 1997

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 825 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTH CENTRAL NEBRASKA

   ...NORTHWESTERN BROWN COUNTY
 
AT 721 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY NORTH PLATTE
DOPPLER RADAR 22 MILES NORTH NORTHWEST OF AINSWORTH OR 18 MILES
NORTH OF JOHNSTOWN MOVING SOUTH SOUTHWEST AT 15 MPH.

THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.
 
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 FROM 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 22, 3:15 PM CDT, 4 hours 8 minutes earlier.

Area forecast discussion, Aug 22, 3:15 PM CDT, 4 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
314 PM CDT THU AUG 22 1997

FORECAST PROBLEM...CHANCES FOR THUNDERSTORMS TONIGHT AND TEMPERATURES

CURRENT KLNX WITH NO INDICATION OF THUNDERSTORM DEVELOPMENT AT THIS
TIME. HOWEVER...VISIBLE SATELLITE INDICATING SOME POSSIBLE DEVELOPMENT
NEAR BROWN COUNTY. AN ISOLATED THUNDERSTORM OVER FRONT RANGE OF WYOMING
MOVING SOUTHEAST INTO NEBRASKA PANHANDLE DISSIPATED. WATER VAPOR
IMAGERY SHOWING SHORTWAVE OVER CENTRAL WYOMING. 18Z SURFACE ANALYSIS
INDICATING TROUGH NEAR THE NORTHWEST CORNER OF THE PANHANDLE WITH 60
DEGREE DEWPOINTS OVER THE CENTRAL PART OF THE FA.

UPPER RIDGE PERSISTS OVER THE ROCKIES THROUGH 48 HOURS WITH NEBRASKA IN
NORTHWEST FLOW. THE SURFACE TROUGH SHOULD MOVE EAST TONIGHT ACROSS FA
ALONG WITH PVA. BY SATURDAY TROUGH SHOULD BE PAST MOST OF FA EXCEPT FOR
ONL AREA. ANOTHER TROUGH MOVES INTO NORTHWEST PANHANDLE SATURDAY NIGHT
AND CONTINUES TO DEVELOP IN THE PANHANDLE ON SUNDAY. THE ETA PROGS
ANOTHER WAVE TO AFFECT PANHANDLE ON SUNDAY.
TONIGHT...AVERAGE RH OF 50 PERCENT ALONG WITH WIDELY SCATTERED
THUNDERSTORMS SHOULD MAKE PARTLY CLOUDY SKY. WINDS SOUTHEAST 5-10.
THETA-E RIDGE IS POSITIONED ACROSS WESTERN NEBRASKA.

SATURDAY...AVERAGE RH CONTINUES AT 50 PERCENT SO PARTLY CLOUDY. ONL
WOULD HAVE A SMALL CHANCE FOR PRECIP NEAR TROUGH. BOUNDARY LAYER WINDS
INDICATED SOUTHWEST 5-10.

SATURDAY NIGHT...PARTLY CLOUDY SKY CONTINUES WITH ISOLATED
THUNDERSTORMS POSSIBLE IN THE NORTHWEST PANHANDLE. SOUTH WIND 5-10.

SUNDAY...TROUGH DEVELOPS IN WESTERN NEBRASKA WITH CHANCE FOR PRECIP IN
PANHANDLE. AVERAGE RH INDICATES PARTLY CLOUDY. WINDS SOUTH 5-10 AHEAD OF
TROUGH.

LBF UU 060/090 060/091 061 20-
OGA UU 060/090 061/092 060 20-
IML UU 060/090 060/092 060 20-
VTN UU 057/090 061/093 062 2-1
ONL UU 059/087 061/092 061 21-

FS

In the hours before

Local storm report, Aug 22, 1:49 PM CDT, 5 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
148 PM CDT FRI AUG 22 1997

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

071n2 PM    2 ENE VENANGO             NE   1.00 INCH HAIL
08/21/97   PERKINS

SP

Local storm report, Aug 22, 6:49 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
649 PM CDT FRI AUG 22 1997

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

0610 PM    9 SSW THEDFORD            NE   1.00 INCH HAIL
08/22/97   THOMAS

0625 PM    9 SSW THEDFORD            NE   1.00 INCH HAIL
08/22/97   THOMAS

M. MUTCHLER

Local storm report, Aug 22, 6:56 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
656 PM CDT FRI AUG 22 1997

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

0650 PM    21 NW SPRINGVIEW          NE   1.00 INCH HAIL
08/22/97   KEYA PAHA

M. MUTCHLER

Local storm report, Aug 22, 6:57 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
656 PM CDT FRI AUG 22 1997

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

065"0 PM    21 NW SPRINGVIEW          NE   1.00 INCH HAIL
08/22/97   KEYA PAHA

M. MUTCHLER

Local storm report, Aug 22, 7:21 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
721 PM CDT FRI AUG 22 1997

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

0715 PM    18 NW SPRINGVIEW          NE   2.00 INCH HAIL
08/22/97   KEYA PAHA

M. MUTCHLER

Local storm report, Aug 22, 7:22 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE  NORTH PLATTE NE
721 PM CDT FRI AUG 22 1997

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

0715 PM    18 NW SPRINGVIEW          NE   2.00 INCH HAIL
08/22/97   KEYA PAHA

M. MUTCHLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 7:41 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	64 min
Aug 22, 7:56 PM CDT	Tornado Warning	LBF	Cherry	64 min
Aug 23, 6:31 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	64 min
Aug 23, 6:40 PM CDT	Severe Thunderstorm Warning	LBF	Thomas	65 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997 Every 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.