Severe Thunderstorm Warning 396, NWS North Platte, NE

000 
WWUS53 KLBF 050250
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
950 PM CDT MON AUG 4 2008

NEC069-050315-
/O.CON.KLBF.SV.W.0396.000000T0000Z-080805T0315Z/
GARDEN NE-
850 PM MDT MON AUG 4 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM MDT
FOR SOUTHWESTERN GARDEN COUNTY...

AT 848 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 6 MILES WEST OF HIGHWAY 26 MILE MARKER 100...OR 11 MILES WEST
OF OSHKOSH...MOVING NORTH AT 16 MPH.

IN ADDITION TO NICKEL SIZED HAIL AND 60 MPH WINDS...THIS STORM IS 
CAPABLE OF PRODUCING VERY HEAVY RAIN. 

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HIGHWAY 26 MILE MARKER 100 AND LISCO BY 900 PM MDT...

LAT...LON 4173 10255 4123 10220 4122 10261 4139 10261
      4140 10263 4156 10264
TIME...MOT...LOC 0250Z 201DEG 14KT 4143 10255

$$

BUTTLER

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
349 PM CDT MON AUG 4 2008

.SYNOPSIS...
SURFACE HIGH PRESSURE BUILDING INTO THE NORTHERN PLAINS WITH
FRONTAL BOUNDARY JUST TO THE SOUTH OVER KANSAS.

&&

.DISCUSSION...
MODELS IN FAIR AGREEMENT IN THE NEAR TERM WITH A BLEND FOR
PRECIPITATION USED. CONVECTION HAS BEEN RUNNING ALONG FRONTAL
BOUNDARY TO THE SOUTH THROUGHOUT THE DAY. A SURFACE LOW IS TRYING
TO GET ORGANIZED ALONG THE BOUNDARY OVER NORTH CENTRAL KANSAS AND
CONVECTION FIRING ALONG FRONT RANGE INTO NORTHEAST COLORADO. HAVE
LEANED TOWARDS GFS SOLUTION WHICH HAS A BETTER HANDLE ON ONGOING
PRECIPITATION TODAY. WAVE MOVING THROUGH THE SOUTHERN ROCKIES ATTM
WILL INTERACT WITH BOUNDARY AND HAVE INCREASED TO CHANCE POPS
TONIGHT. 4000 JOULES/KG PROGGED ALONG SURFACE BOUNDARY THIS
EVENING. ALL OF WESTERN NEBRASKA SUSCEPTIBLE TO SEVERE TONIGHT.
ABUNDANT MOISTURE WITH MID AND UPPER FLOW FROM SOUTHWEST MONSOON
RIGHT OVER THE FORECAST AREA SYSTEMS WILL HAVE PLENTY OF MOISTURE
TO WORK WITH. HAVE CUT TEMPERATURES BACK ON TUESDAY WITH CLOUD
COVER AND RESIDUAL PRECIPITATION. BOUNDARY WILL AGAIN BE THE FOCUS
FOR CONVECTION TUESDAY AFTERNOON AND EVENING. FOCUS FROM THE
NEBRASKA PANHANDLE THROUGH SOUTHWEST NEBRASKA WEDNESDAY WITH CAPE
VALUES AGAIN AROUND 4000 JOULES/KG AND UPPER SYSTEM DIVING THROUGH
FAST NORTHWEST FLOW INTERACTING WITH BOUNDARY TO THE SOUTH AS
UPPER RIDGE BUILDS EAST.

IN THE EXTENDED THURSDAY THROUGH MONDAY SERIES OF BACKDOOR FRONTS
MOVE ACROSS THE AREA AS UPPER SYSTEMS DROP INTO GREAT LAKES TROUGH
WITH SLIGHT BLOCKING DOWNSTREAM. COOLER TOWARDS THE WEEKEND WITH
GRADUAL COOL DOWN AS RIDGE TO THE WEST TRIES TO MOVE EAST INTO THE
NORTHERN PLAINS. NORTHWEST FLOW WILL GO ALONG WITH THE 8 TO 10 DAY
BELOW NORMAL TEMPERATURES AND ABOVE NORMAL PRECIPITATION.

&&

.AVIATION...

ANOTHER ROUND OF THUNDERSTORMS ARE POSSIBLE ACROSS THE REGION
TONIGHT. DEVELOP IS EXPECTED OVER THE FRONT RANGE/WESTERN NEBRASKA
WITH STORMS THEM MOVING EAST. ANY THUNDERSTORMS CAN BRING A
REDUCTION OF CIGS AND VSBY TO MVFR AND POSSIBLE BRIEFLY TO IFR
CATEGORY. RESIDUAL MOISTURE IN THE WAKE OF THE STORMS HAS THE
POTENTIAL FOR A BRIEF PERIOD OF LOW MVFR STRATUS AND/OR MVFR/IFR
FOG. CONDITIONS IMPROVE TO VFR TOMORROW MORNING ACROSS THE REGION.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...NONE.
&&

MASEK/POWER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTH PLATTE NE
804 PM CDT MON AUG 4 2008

NEZ004>010-022>029-035>038-056>059-069>071-094-051030-
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-
804 PM CDT MON AUG 4 2008 /704 PM MDT MON AUG 4 2008/

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

.DAY ONE...REST OF TONIGHT.

SCATTERED THUNDERSTORMS ARE POSSIBLE ALONG AND SOUTH OF INTERSTATE
80 FOR THE REST OF TONIGHT. HEAVY RAIN IS THE MAIN
THREAT...HOWEVER SOME ISOLATED STORMS MAY PRODUCE GUSTY WINDS AND
HAIL UP TO PENNY SIZE...ESPECIALLY ALONG AND SOUTH OF INTERSTATE
80.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

TUESDAY AND WEDNESDAY...A STATIONARY FRONT WILL MEANDER NORTH AND
SOUTH ACROSS NEBRASKA ACTING AS A FOCUS FOR STORM DEVELOP LATE IN
THE DAY OR AT NIGHT. WINDS ALOFT WILL REMAIN STRONG SUPPORTING
ISOLATED TO SCATTERED SEVERE STORMS CAPABLE OF LARGE
HAIL...INTENSE RAINFALL AND WIND DAMAGE. LOCAL STORM ENVIRONMENTS
MAY SUPPORT THE DEVELOPMENT OF A BRIEF TORNADO.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT.

&&

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

CLB