Severe Thunderstorm Warning 405, NWS North Platte, NE

000 
WWUS53 KLBF 022210
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
510 PM CDT WED SEP 2 2009

NEC089-022245-
/O.CON.KLBF.SV.W.0405.000000T0000Z-090902T2245Z/
HOLT NE-
510 PM CDT WED SEP 2 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTHWESTERN HOLT COUNTY...

AT 508 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 9 MILES NORTHWEST OF HIGHWAY 11 MILE MARKER 160...OR 22 MILES
SOUTHWEST OF SPENCER...MOVING EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HIGHWAY 11 MILE MARKER 160 AND 6 MILES SOUTH OF HIGHWAY 11 MILE
  MARKER 170 BY 540 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4263 9918 4272 9921 4281 9913 4285 9905
      4282 9882 4256 9893
TIME...MOT...LOC 2210Z 291DEG 16KT 4272 9906

$$

MASEK

000 
WWUS53 KLBF 022222
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
522 PM CDT WED SEP 2 2009

NEC089-022245-
/O.CON.KLBF.SV.W.0405.000000T0000Z-090902T2245Z/
HOLT NE-
522 PM CDT WED SEP 2 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTH CENTRAL HOLT COUNTY...

AT 521 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR HIGHWAY 11 MILE MARKER
160...OR 18 MILES SOUTHWEST OF SPENCER...MOVING EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HIGHWAY 11 MILE MARKER 160 BY 530 PM CDT...
  6 MILES SOUTH OF HIGHWAY 11 MILE MARKER 170 BY 535 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING 
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS 
ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR 
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4264 9910 4270 9912 4277 9907 4283 9902
      4282 9882 4256 9893
TIME...MOT...LOC 2222Z 288DEG 19KT 4269 9896

$$

MASEK

000 
WWUS53 KLBF 022239
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
539 PM CDT WED SEP 2 2009

NEC089-022247-
/O.EXP.KLBF.SV.W.0405.000000T0000Z-090902T2245Z/
HOLT NE-
539 PM CDT WED SEP 2 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL HOLT COUNTY WILL
EXPIRE AT 545 PM CDT...

THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED. THUS THE 
WARNING WILL BE ALLOWED TO EXPIRE. THE REMAINS A THREAT FOR 
ADDITIONAL SEVERE THUNDERSTORMS THIS EVENING.

LAT...LON 4264 9910 4270 9912 4277 9907 4283 9902
      4282 9882 4256 9893
TIME...MOT...LOC 2237Z 288DEG 19KT 4266 9886

$$

MASEK

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
340 PM CDT WED SEP 2 2009

.DISCUSSION...
UPPER LOW DROPPING SSE ACROSS CENTRAL SOUTH DAKOTA LATE THIS
AFTERNOON...WITH A WEAK SURFACE REFLECTION CENTERED JUST SOUTHEAST
OF PIERRE. TROUGH/COLD FRONT EXTENDS SOUTHEAST FROM THIS WEAK
SURFACE LOW ACROSS CENTRAL NEBRASKA...AND THIS WILL SERVE AS THE
FOCUS FOR TSTM DEVELOPMENT. MOISTURE CONVERGENCE INCREASING A BIT
ALONG THE BOUNDARY ATTM...WITH SOME CU JUST STARTING TO DEVELOP.
OVERALL THE BEST CHANCE FOR PRECIP TONIGHT WILL BE AS THE UPPER LOW
DRIFTS INTO NORTHEAST NEBRASKA LATER THIS EVENING. PWAT VALUES
EXPECTED NEAR 1.5 INCHES IN THIS AREA...AND SOME HEAVIER BOUTS OF
RAIN ARE POSSIBLE. NOT EXPECTING EXTREMELY HEAVY AMOUNTS OF
RAIN...BUT TOTALS BETWEEN ONE AND TWO INCHES ARE POSSIBLE ACROSS
HOLT...BOYD...WHEELER AND GARFIELD COUNTIES. FURTHER
SOUTHWEST...MORE ISOLATED ACTIVITY WILL BE POSSIBLE INVOF THE
TROUGH/COLD FRONT. BEST CHANCES FOR THIS WILL BE ALONG AND EAST OF
HWY 83. SHEAR AND INSTABILITY ARE SUCH THAT A SEVERE STORM OR TWO
CONTAINING SUPERCELL CHARACTERISTICS WILL BE POSSIBLE.

UPPER LOW WILL CONTINUE DRIFTING SOUTH ON THURSDAY...WITH NORTHEAST
NEBRASKA STILL SEEING SOME WRAP AROUND SHOWERS DURING AT LEAST THE
FIRST HALF OF THE DAY. TEMPS WILL BE COOL ACROSS THE NORTHEAST...AND
MODEL GUIDANCE SUGGESTED 60S SEEMS REASONABLE GIVEN THE ABUNDANT
CLOUD COVER AND SHOWERS. UPPER LOW SHOULD HAVE DRIFTED FAR ENOUGH
SOUTH OF THE AREA FRIDAY NIGHT THAT PRECIPITATION SHOULD HAVE
ENDED...BUT CLOUDS WILL LINGER ACROSS THE SOUTHEAST PART OF THE
AREA.

NOW FOR LABOR DAY WEEKEND...IT APPEARS WEATHER WILL BE QUITE
PLEASANT. IT WILL BE A BIT BREEZY...AS SOUTH WINDS DEVELOP AHEAD OF
A DEEPENING LEEWARD TROUGH. TEMPS SHOULD RANGE FROM THE UPPER 70S TO
LOWER 80S SATURDAY...AND WARM INTO THE 80S SUNDAY AND MONDAY. NEXT
SYSTEM TO APPROACH THE AREA TUESDAY. GFS IN GOOD AGREEMENT WITH IT/S
ENSEMBLES...SO WILL TREND THE TIMING OF THE SYSTEM IN THAT
DIRECTION. ECMWF NOW ALSO COMING INTO LINE WITH THE GFS AND
ENSEMBLES...AND APPEARS THE BEST CHANCE OF RAIN/TSTMS WILL BE WITH
THE COLD FRONTAL PASSAGE ON TUESDAY NIGHT. HIGHS WILL REMAIN IN THE
80S TUESDAY...AND NEAR 80 ON WEDNESDAY.

&&

.AVIATION...
AS THE LOW SLIDES SOUTHEAST INTO NE NEB THIS EVENING...THUNDERSTORMS
WILL BE POSSIBLE ACROSS NORTH CENTRAL NEB. THIS HAS A POSSIBILITY TO
IMPACT THE KVTN TERMINAL...AND WILL BE MONITORED CLOSELY FOR AN
AMENDMENT TO INCLUDE THUNDER FOR THIS EVENING. FURTHER SOUTH THE
TROUGH WILL DRIFT ACROSS THE KLBF TERMINAL...AND WHILE HAVE KEPT THE
TAF VFR FOR NOW...IF A SHOWER/THUNDERSTORM DEVELOP A BRIEF MVFR
CONDITION IS POSSIBLE. TONIGHT STORM CHANCE DIMINISHES...HOWEVER
RESIDUAL MOISTURE WILL HELP TO DEVELOP MVFR/IFR STRATUS...MAINLY
NEAR LOW PRESSURE. THIS IS EXPECTED TO IMPACT KVTN...HOWEVER REMAIN
NORTH AND EAST OF KLBF AT THIS TIME. TOMORROW CLOUDS WILL BE SLOW TO
LIFT AS LOW SLOWLY DRIFTS ACROSS EASTERN NEB.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...NONE

DISCUSSION/PUBLIC...TAYLOR/SHULTZ
AVIATION...MASEK

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTH PLATTE NE
332 PM CDT WED SEP 2 2009

NEZ004>010-022>029-035>038-056>059-069>071-094-032045-
SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN-
GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON-
LOGAN-CUSTER-DEUEL-KEITH-PERKINS-LINCOLN-CHASE-HAYES-FRONTIER-
WESTERN CHERRY-
332 PM CDT WED SEP 2 2009 /232 PM MDT WED SEP 2 2009/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND
NORTH CENTRAL NEBRASKA.

.DAY ONE...TONIGHT.

SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING
ALONG AND SOUTHEAST OF A LINE FROM SPRINGVIEW...SOUTHWEST THROUGH
STAPLETON...NORTH PLATTE...AND IMPERIAL. A FEW STORMS MAY BECOME
SEVERE. THE MAIN THREAT WILL BE LARGE HAIL THE SIZE OF QUARTERS
AND DAMAGING WINDS UP TO 60 MPH.

MOST OF THE STORMS WILL DIMINISH WITH SUNSET...BUT IN THE SPENCER
AND ONEILL AREAS THE THUNDERSTORMS WILL LIKELY CONTINUE INTO THE
NIGHT. IN THIS PORTION OF NORTH CENTRAL NEBRASKA...LOCALLY HEAVY
RAIN OF 1 TO 2 INCHES COULD OCCUR BY THURSDAY MORNING AS AN AREA
OF LOW PRESSURE SLOWLY MOVES THROUGH THE AREA.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

A CHANCE OF THUNDERSTORMS WILL CONTINUE INTO THURSDAY IN THE ONEILL
AREA. THE CHANCE OF THUNDERSTORMS WILL RETURN TO THE ENTIRE AREA
MONDAY NIGHT THROUGH WEDNESDAY OF NEXT WEEK AS AN AREA OF LOW
PRESSURE APPROACHES THE HIGH PLAINS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING OVER
PARTS OF THE AREA.

&&

THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER...
HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT
HTTP://WWW.WEATHER.GOV/NORTHPLATTE

SCHULTZ