Severe Thunderstorm Warning 293, NWS North Platte, NE

000 
WWUS53 KLBF 040952
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
452 AM CDT MON JUL 4 2005

NEC029-041015-
/O.CON.KLBF.SV.W.0293.000000T0000Z-050704T1015Z/
CHASE NE-
352 AM MDT MON JUL 4 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 415 AM MDT FOR
CENTRAL CHASE COUNTY...

AT 350 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
 THIS STORM WAS LOCATED 7 MILES NORTHWEST OF IMPERIAL...MOVING
SOUTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES NORTHEAST OF CHAMPION BY 405 AM MDT
  IMPERIAL BY 410 AM MDT
  6 MILES NORTHWEST OF ENDERS BY 415 AM MDT

IF SEVERE WEATHER WAS OBSERVED...PLEASE CONTACT YOUR LOCAL LAW
ENFORCEMENT AGENCY AND HAVE THEM PASS THE REPORT TO THE NATIONAL
WEATHER SERVICE OFFICE IN NORTH PLATTE.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT 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 4069 10152 4069 10199 4044 10192 4043 10149

$$

JWS

000 
WWUS53 KLBF 041003
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
502 AM CDT MON JUL 4 2005

NEC029-041012-
/O.CAN.KLBF.SV.W.0293.000000T0000Z-050704T1015Z/
CHASE NE-
402 AM MDT MON JUL 4 2005

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHASE COUNTY IS
CANCELLED...

AT 4 AM MDT...NORTH PLATTE DOPPLER RADAR INDICATED THAT THE STORM 
THAT PROMPTED THE WARNING HAD WEAKENED RAPIDLY AND NO LONGER POSED A 
SEVERE WEATHER THREAT.

IF SEVERE WEATHER WAS OBSERVED...PLEASE CONTACT YOUR LOCAL LAW
ENFORCEMENT AGENCY AND HAVE THEM PASS THE REPORT TO THE NATIONAL
WEATHER SERVICE OFFICE IN NORTH PLATTE.

LAT...LON 4069 10152 4069 10199 4044 10192 4043 10149

$$
JWS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
402 AM CDT MON JUL 4 2005

.DISCUSSION...
U/A ANALYSIS AND SAT PICS SHOWING UPPER LOW SPINNING INTO EASTERN
ONTARIO ATTM WITH TROF EXTENDING SOUTHWARD ACROSS THE PLAINS. FAIRLY
STRONG JET ON EASTERN SIDE OF THIS LOW WITH BEST PRESSURE FALLS ON
NOSE OF THIS JET SHOULD ALLOW THIS SYSTEM TO CONTINUE TO MOVE ACROSS
SE CANADA...ALLOWING RIDGING TO COMMENCE ACROSS NORTHERN STATES AS
MEAN TROF WILL GENERALLY BE LAYING ACROSS NE PAC INTO B.C. OVER
THROUGH NEXT WEEK. ANOTHER MUCH SMALLER JET MAX SEEMS TO BE SHOWING
UP IN SAT WINDS PRODUCT OVER IDAHO ASSOC WITH POLAR JET...SUB TROP
JET EXTENDING OVER RIDGE IN NORCAL AND NOSING INTO SOUTHERN
PLAINS...AIDING STRONG CONVECTION THERE. H2O PICS SHOWING WEAKER
DISTURBANCES EXTENDING FROM WY ROCKIES UP STREAM INTO PAC NW WHICH
WILL HAVE SOME INFLUENCE FOR AIDING LIFT OVER HIGH PLAINS THIS
AFTERNOON. MODELS INDICATE SW RIDGE BUILDING NORTHWARD ACROSS
ROCKIES THROUGH MID WEEK WITH CWA REMAINING IN NW FLOW ON FRONT OF
RIDGE...WHERE WEAK WAVES RIDING RIDGE WILL CONTINUE TO DROP INTO
HIGH PLAINS/WESTERN CWA. THIS IS THE POSITION OF THETA E RIDGE ATTM
WHICH IS SUSTAINING CONVECTION ACROSS PANHANDLE...AND WHERE THIS
INSTABILITY RIDGE LOOKS TO REMAIN NEXT FEW DAYS. IN FACT BOUNDARY
DRIFTING SOUTHWARD ON 88D ATTM SEEMS TO BE INDICATING DRY AIR MOVING
SOUTHWARD WHICH SHOULD KEEP POPS LIMITED ACROSS NE CWA TODAY WITH
BEST CHANCES PANHANDLE INTO WESTERN SANDHILLS/SW. CURRENT FCST IN
GOOD SHAPE AND ONLY WILL NEED MINOR BLENDING TWEAKS. COMBINATION OF
THETA E RIDGE...WAA/UPGLIDE ON SW SIDE OF SFC HIGH AND WEAK UPPER
WAVES LOOK TO KEEP PCPN MENTION IN WEST MOST OF DAY WHERE TEMPS
SHOULD BE IMPACTED. SEVERE IMPACT LOOKS MINIMAL AS CAPE PROFILE THIN
AND STRETCHED OVER MUCH OF PROFILE...ACCORDING TO NAM BUFKIT PROFILE
IN WESTERN CWA. BEST PROFILES LOOK TO BE SW OF CWA WHERE BETTER
SHEAR ALSO EXISTS. SIMILAR SCENARIO IN TUESDAY...BUT THETA E RIDGE A
LITTLE STRONGER AND SHIFTS SLIGHTLY EASTWARD...JET OVERNIGHT ALSO
STRONGER WHICH COULD SUSTAIN MORE WIDESPREAD CONVECTION THROUGH THE
EARLY MORNING HOURS. WARMUP THROUGH END OF FCST AS RIDGE BUILDS IN
WITH MAINLY DRY CONDITIONS.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...NONE

&&

13

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTH PLATTE NE
312 PM CDT SUN JUL 3 2005

NEZ004>010-022>029-035>038-056>059-069>071-094-041045-
ARTHUR NE-BLAINE NE-BOYD NE-BROWN NE-CHASE NE-CUSTER NE-DEUEL NE-
EASTERN CHERRY NE-FRONTIER NE-GARDEN NE-GARFIELD NE-GRANT NE-
HAYES NE-HOLT NE-HOOKER NE-KEITH NE-KEYA PAHA NE-LINCOLN NE-LOGAN NE-
LOUP NE-MCPHERSON NE-PERKINS NE-ROCK NE-SHERIDAN NE-THOMAS NE-
WESTERN CHERRY NE-WHEELER NE-
INCLUDING THE CITIES OF...AINSWORTH...ARNOLD...ARTHUR...BASSETT...
BIG SPRINGS...BREWSTER...BROKEN BOW...BURWELL...CHAPPELL...CURTIS...
GORDON...GRANT...HAY SPRINGS...HAYES CENTER...IMPERIAL...MULLEN...
NORTH PLATTE...ONEILL...OGALLALA...OSHKOSH...RUSHVILLE...SPENCER...
SPRINGVIEW...STAPLETON...TAYLOR...THEDFORD...TRYON AND VALENTINE
312 PM CDT SUN JUL 3 2005

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

.DAY ONE...TONIGHT

A WEAK WAVE WILL CONTINUE TO MOVE ACROSS THE OUTLOOK AREA TONIGHT. A
FEW THUNDERSTORMS WILL BE POSSIBLE IN ASSOCIATION WITH THIS WAVE.
HOWEVER...THE THUNDERSTORMS ARE EXPECTED TO REMAIN BELOW SEVERE
LIMITS.

.DAYS TWO THROUGH SEVEN...INDEPENDENCE DAY THROUGH SATURDAY

A COLD FRONT THAT MOVED THROUGH THE AREA EARLY SUNDAY WILL BEGIN TO
RETURN NORTHWARD ALONG THE WESTERN HIGH PLAINS DURING THE DAY MONDAY.
MOISTURE WILL RETURN AS WELL ON SOUTHEAST WINDS AND...WITH SUNSHINE
DURING THE DAY MONDAY...THE ATMOSPHERE WILL BECOME UNSTABLE ONCE
AGAIN. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO MOVE INTO
THE WESTERN PORTION OF THE STATE EARLY MONDAY. A FEW OF THESE STORMS
WILL HAVE THE POTENTIAL TO PRODUCE LARGE HAIL AND DAMAGING WINDS BY
AFTERNOON INTO THE EVENING HOURS...MAINLY WEST OF A LINE FROM
MERRIMAN TO NORTH PLATTE. THOSE PLANNING OUTDOOR ACTIVITIES FOR THE
HOLIDAY SHOULD MONITOR NOAA ALL HAZARDS RADIO OR LOCAL MEDIA FOR
FURTHER UPDATES CONCERNING THE POTENTIAL FOR THUNDERSTORM DEVELOPMENT
MONDAY.

THE FRONT WILL CONTINUE MAKING A SLOW PROGRESSION EASTWARD ACROSS THE
AREA TUESDAY AND WEDNESDAY...CONTINUING THE CHANCES FOR SHOWERS AND
THUNDERSTORMS ACROSS THE AREA. BY LATE IN THE WEEK...HIGH PRESSURE
WILL BUILD INTO THE REGION AND IS EXPECTED TO ASSIST IN LIMITING
FURTHER CHANCES FOR THUNDERSTORM DEVELOPMENT THURSDAY THROUGH
SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED MONDAY AFTERNOON AND EVENING WEST
OF A LINE FROM MERRIMAN TO NORTH PLATTE.

JWS/MASEK