Severe Thunderstorm Warning 389, NWS North Platte, NE

000 
WWUS53 KLBF 030451
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1151 PM CDT SAT AUG 2 2008

NEC015-103-149-030500-
/O.CAN.KLBF.SV.W.0389.000000T0000Z-080803T0515Z/
ROCK NE-BOYD NE-KEYA PAHA NE-
1150 PM CDT SAT AUG 2 2008

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN KEYA PAHA...
NORTHWESTERN BOYD AND NORTHEASTERN ROCK COUNTIES IS CANCELLED...

THE STORMS THAT PROMPTED THE WARNING HAD WEAKENED AND NO LONGER 
SHOWED SEVERE WEATHER POTENTIAL. STORMS WILL CONTINUE OVER NORTH 
CENTRAL NEBRASKA...AND ARE STILL CAPABLE OF PRODUCING STRONG WIND 
AND AT LEAST SMALL HAIL.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SUNDAY
MORNING FOR NORTH CENTRAL NEBRASKA.

LAT...LON 4282 9921 4280 9926 4278 9926 4267 9937
      4298 9979 4300 9973 4300 9903
TIME...MOT...LOC 0450Z 216DEG 34KT 4302 9916

$$

SPRINGER

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
313 PM CDT SAT AUG 2 2008

.SYNOPSIS...
SURFACE LOW OVER WESTERN SOUTH DAKOTA WITH WARM FRONT LIFTING TO
THE NORTHEAST OVER CENTRAL NEBRASKA TRAILING COOL FRONT INTO
CENTRAL WYOMING.

&&

.DISCUSSION...

NEAR TERM MODELS IN VERY GOOD AGREEMENT. HAVE USED BLEND FOR THE
FORECAST. FORECAST SOUNDING THIS MORNING VERY DRY IN MID LEVELS
WITH MASSIVE CAPES VERY NEAR TO FORECAST MAX TEMP OF 107. SOME
ECHOES IN THE PANHANDLE AND HAVE INCLUDED ISO POPS INTO THE
EVENING OUT WEST. ANY T THAT DEVELOP WILL BE CAPABLE OF STRONG
WINDS AND SPRINKLES. HOT AND MUGGY TO THE EAST WITH THE HEAT
ADVISORY WILL CONTINUE BOTH ADVISORY AND RED FLAG WARNING. NOT AS
WARM ON SUNDAY AS H5 RIDGE FLATTENING IN RESPONSE TO UPPER LOW
OVER CENTRAL CANADA. TDS TO RETURN BUT COOLER TEMPERATURES SHOULD
PRECLUDE ADVISORIES AND WARNINGS ON SUNDAY. FRONTAL BOUNDARY DROPS
THROUGH FORECAST AREA ON MONDAY WITH POPS INCREASED THROUGH THE
EVENING. IN THE EXTENDED TEMPERATURES COOL SOME 5 TO 10 DEGREES
TUESDAY WITH FROPA AND THEN PRECIPITATION SHIFTING TO THE
PANHANDLE. NEXT SYSTEM TO PASS THROUGH WEDNESDAY THURSDAY TIME
FRAME WITH POPS INCREASED AS MOISTURE RETURNS. COOLER THROUGH THE
WEEKEND AS RIDGE SHARPENS TO THE WEST AND GREAT LAKES TROUGH
DEEPENS.

&&

.AVIATION...

ISOLATED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS
THE PANHANDLE THIS AFTERNOON AND MOVE NORTHEAST INTO NORTH CENTRAL
NE BETWEEN 00Z AND 09Z.  WITH THE VERY DRY CONDITIONS IN THE LOWER
LAYERS OF THE ATMOSPHERE...THE BIGGEST THREAT WITH THE THUNDERSTORMS
WILL BE WIND GUSTS.  WIND GUSTS COULD BE AS HIGH AS 60 MPH.  VSBY
AND CIGS WILL LIKELY STAY VFR.  ISOLATED THUNDERSTORMS WILL DEVELOP
ONCE AGAIN OVER THE PANHANDLE SUNDAY AFTERNOON AND SPREAD
NORTHEASTWARD AFTER 00Z MON.

&&

.FIRE WEATHER...

WITH SURFACE TEMPERATURES REACHING RECORD NUMBERS...FROM 104F-110F
ACROSS THE VERY SOUTH...SOUTHERLY WINDS GUSTING TO 25 MPH...AND
RELATIVE HUMIDITIES IN THE TEENS...WILL CONTINUE THE RED FLAG
WARNING UNTIL 02Z THIS EVENING.  A WEAK FRONT ALONG THE NE/SD BORDER
EARLY SUN MORNING WILL SLIDE SOUTH THROUGH THE DAY SUN.  HIGHER
DEWPOINTS WILL WRAP INTO THE AREA BEHIND THE FRONT.  THIS WILL KEEP
MINIMUM RELATIVE HUMIDITIES FROM BOTTOMING OUT...THEY WILL BE IN THE
20S AND 30S ACROSS THE AREA.  THEREFORE WILL NOT ISSUE A FIRE
WEATHER WATCH FOR SUN.  HIGHER HUMIDITIES AND A NEARLY STATIONARY
FRONT WILL PROVIDE ENOUGH INGREDIENTS FOR A FEW THUNDERSTORMS
INITIALLY DEVELOPING OVER THE PANHANDLE SUN AFTERNOON AND THEN
MOVING TO THE NORTHEAST OVER WESTERN NEBRASKA SUN NIGHT.  SOUTHEAST
WINDS AND HIGHER HUMIDITY WILL PREVAIL THROUGH MUCH OF NEXT
WEEK...BRINGING A SLIGHT CHANCE OF THUNDERSTORMS EACH EVENING.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...RED FLAG WARNING UNTIL 9 PM CDT
THIS EVENING FOR NEZ210-219.

HEAT ADVISORY UNTIL 9 PM CDT THIS EVENING FOR NEZ027>029-038.

&&

DDB/POWER

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTH PLATTE NE
357 PM CDT SAT AUG 2 2008

NEZ004>010-022>029-035>038-056>059-069>071-094-032100-
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-
357 PM CDT SAT AUG 2 2008 /257 PM MDT SAT AUG 2 2008/

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

.DAY ONE...TONIGHT.

A HEAT ADVISORY AND A RED FLAG WARNING CONTINUE TO THIS EVENING
UNTIL 9 PM CDT ACROSS SOUTHWEST AND WESTERN NEBRASKA. VERY HOT
TEMPERATURES ACROSS THE SOUTHWEST WILL BE SLOW TO FALL OFF THIS
EVENING AS TEMPERATURES ARE ONLY EXPECTED TO DROP TO THE UPPER 60S
OVERNIGHT.

ISOLATED THUNDERSTORMS ACROSS THE EASTERN PANHANDLE WILL MOVE
NORTHEAST INTO NORTH CENTRAL NEBRASKA TONIGHT. WITH THE DRY
CONDITIONS IN THE LOWER PART OF THE ATMOSPHERE...THE BIGGEST THREAT
FROM THESE THUNDERSTORMS WILL BE STRONG WIND GUSTS AND LIGHTNING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SOUTHEAST WINDS WILL TRANSPORT MOISTURE INTO THE AREA BRINGING A
SLIGHT CHANCE OF THUNDERSTORMS SUNDAY THROUGH THURSDAY. SOME OF
THESE STORMS MAY HAVE HAIL...STRONG WINDS...AND BRIEF HEAVY RAIN.

.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

DDB