Severe Thunderstorm Warning 266, NWS Springfield, MO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
159 AM CDT SAT AUG 28 2004

.DISCUSSION...

WELL LOOKS LIKE THE TORRENTIAL RAINFALL AND FLOODING DID OCCUR
TONIGHT...BUT FORTUNATELY IT REMAINED FOCUSED ABOUT 60-80MI NORTH OF
OUR CWA. OUTFLOW HAS SURGED SOUTHWARD AHEAD OF THE CONVECTION INTO
OUR NORTHERN COUNTIES EARLY THIS MORNING...BUT WITH LOW LEVEL JET
ALREADY VEERED AROUND TO THE WEST AND RUNNING NEARLY PARALLEL TO THE
BOUNDARY NOT EXPECTING MUCH CONVECTION TO FIRE UP OR FILL IN OVER
OUR NORTHERN COUNTIES EARLY THIS MORNING. ADDITIONAL CONVECTION HAS
ACTUALLY BEEN DEVELOPING TO THE NORTH OF THE ORIGINAL MCS IN A
REGION OF MUCH STRONGER UPPER LEVEL DIVERGENCE CLOSER TO THE RIGHT
ENTRANCE REGION OF THE 100KT+ 250MB JET STREAK.

AS THE SHORT WAVE PROGRESSES EASTWARD AND THE FRONTAL BOUNDARY
SLIDES SOUTHWARD AM EXPECTING SCATTERED SHOWERS AND THUNDERSTORMS TO
GRADUALLY OVERSPREAD THE CWA TODAY. SLOW MOVEMENT OF THE FRONT COULD
STILL ALLOW FOR SOME LOCALLY HEAVY RAINFALL TOTALS TODAY...BUT THE
THREAT OF WIDESPREAD OR SIGNIFICANT FLOODING HAS GREATLY DIMINISHED.
VERY HESITANT TO CANCEL THE FLOOD WATCH EARLY SINCE CONVECTION
STILL SEEMS LIKE A GOOD BET TODAY...AND SINCE LOCALLY HEAVY RAINFALL
ISNT COMPLETELY OUT OF THE QUESTION. AT A MINIMUM WILL PROBABLY
SHAVE OFF SOME COUNTIES OFF THE SOUTHWESTERN PART OF THE WATCH WHERE
FLASH FLOOD GUIDANCE IS VERY HIGH AND PROBABLY UNATTAINABLE. THIS IS
JUST PRELIMINARY THOUGHTS...WILL WAIT UNTIL CLOSER TO 09Z TO MAKE A
FINAL DECISION ON WHAT TO DO WITH THE FFA.

TROUGH AXIS SWINGS EAST OF THE AREA EARLY THIS EVENING WITH A CHANCE
OF SOME LINGERING SHOWERS OVER SOUTH CENTRAL MISSOURI. IN THE WAKE
OF THE SHORT WAVE STRONG SUBSIDENCE SHOULD SET IN AND ALLOW FOR
SKIES TO CLEAR OUT FROM NORTHWEST TO SOUTHEAST TONIGHT. HIGH
PRESSURE PROGGED TO BUILD INTO THE AREA WITH A FAIRLY LIGHT PRESSURE
GRADIENT. WHERE SKIES CLEAR OUT THE SET UP LOOKS GOOD FOR FOG
TONIGHT...ESPECIALLY SINCE THE LOW LEVELS SHOULD BE FAIRLY MOIST
STILL FROM RAINFALL TODAY. PATCHY DENSE FOG CERTAINLY NOT OUT OF THE
QUESTION...BUT WILL ONLY LOWER VISIBILITIES TO IFR FOR NOW IN THE
GRIDS.

ANY PATCHY FOG WILL BURN OFF EARLY SUNDAY MORNING WITH SKIS BECOMING
MOSTLY SUNNY. LATEST GUIDANCE IS TRENDING WARMER FOR SUNDAY...BUT
NOT READY TO BUMP TEMPERATURES UP ALL THAT MUCH YET SINCE MIXING
850MB TEMPS TO THE SURFACE AND ADDING ON A COUPLE DEGREES FOR A
SUPER-ADIABATIC LAPSE RATE YIELDS HIGHS CLOSE TO WHAT IS IN THE
GRIDS NOW.

SURFACE HIGH SHOULD BE NEARLY OVERHEAD SUNDAY NIGHT WITH CLEAR SKIES
AND CALM WINDS EXPECTING STRONG RADIATIONAL COOLING TO TAKE PLACE.
SUNSHINE AND WEAK DRY AIR ADVECTION DURING THE DAY SUNDAY SHOULD
GENERALLY DO A PRETTY DECENT JOB OF SCOURING OUT THE LOW
LEVELS...BUT GIVEN THE STRONG RADIATIONAL COOLING WOULD EXPECT SOME
PATCHY FOG TO DEVELOP. FOG SHOULD BE MOST PREVALENT IN VALLEYS AND
NEAR BODIES OF WATER...SINCE LAKE WATER TEMPS ARE STILL IN THE LOWER
80S.

GOING EXTENDED SEEMS TO HAVE A PRETTY GOOD HANDLE ON THINGS SO SAW
NO REASON TO MAKE ANY CHANGES.

IZZI

&&

.AVIATION...

VFR CONDITIONS CAN BE EXPECTED THROUGH THE EARLY MORNING HOURS WITH
CLOUDINESS GRADUALLY INCREASING AND LOWERING AS SHOWERS AND
THUNDERSTORMS SLOWLY INCH SOUTHWARD TOWARD THE JLN/SGF AREAS.
SCATTERED SHOWERS AND THUNDERSTORMS CAN BE EXPECTED DURING THE DAY
TOMORROW WITH CIGS/VIS NOT EXPECTED TO DROP BELOW MVFR. SKIES WILL
CLEAR OUT THIS EVENING WITH SOME FOG DEVELOPING AFTER MIDNIGHT
TONIGHT.

&&

.SGF WATCHES/WARNINGS/ADVISORIES...
MO...FLOOD WATCH THROUGH SATURDAY AFTERNOON ALONG AND NORTH OF A
JOPLIN TO ROLLA LINE.
KS...FLOOD WATCH THROUGH SATURDAY AFTERNOON FOR EXTREME SOUTHEAST
KANSAS.

WFO SGF

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1000 AM CDT SAT AUG 28 2004

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-281800-
BARRY-BARTON-BENTON-BOURBON-CAMDEN-CEDAR-CHEROKEE-CHRISTIAN-CRAWFORD-
DADE-DALLAS-DENT-DOUGLAS-GREENE-HICKORY-HOWELL-JASPER-LACLEDE-
LAWRENCE-MARIES-MCDONALD-MILLER-MORGAN-NEWTON-OREGON-OZARK-PHELPS-
POLK-PULASKI-SHANNON-ST. CLAIR-STONE-TANEY-TEXAS-VERNON-WEBSTER-
WRIGHT-
INCLUDING THE CITIES OF...AVA...BOLIVAR...BRANSON...CAMDENTON...
FORT LEONARD WOOD...FORT SCOTT...HOUSTON...JOPLIN...LEBANON...
MONETT...MOUNT VERNON...NEOSHO...NEVADA...OSAGE BEACH...OZARK...
PITTSBURG...ROLLA...SPRINGFIELD...STOCKTON AND WEST PLAINS.
1000 AM CDT SAT AUG 28 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MISSOURI OZARKS AND EXTREME
SOUTHEAST KANSAS.

.DAY ONE...TODAY AND TONIGHT.

  SCATTERED SHOWERS AND THUNDERSTORMS WILL AFFECT SOUTH CENTRAL
  MISSOURI THROUGH THE EARLY AFTERNOON. THE STORMS WILL AFFECT AREAS
  EAST OF A LINE FROM FORT LEONARD WOOD TO BRANSON WITH THE
  STRONGEST STORMS NEAR THE ARKANSAS BORDER. THE PRIMARY THREAT
  FROM THESE STORMS WILL BE HEAVY RAINFALL AND LOCALIZED FLOODING.

  PATCHY DENSE FOG IS POSSIBLE AFTER MIDNIGHT...ESPECIALLY OVER
  WESTERN PORTIONS OF THE OUTLOOK AREA...WEST OF HIGHWAY 65.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

  NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

  SPOTTER ACTIVATION WILL NOT BE REQUIRED THROUGH TONIGHT.

&&

THIS PRODUCT IS NOW AVAILABLE IN GRAPHICAL FORMAT...ALONG WITH OTHER
WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION...AT
HTTP://WWW.CRH.NOAA.GOV/SGF

FOSTER/IZZI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
0802 AM CDT SAT AUG 28 2004

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0730 AM     TSTM WND DMG     1 N RICHARDS            37.93N 94.57W
08/28/2004                   VERNON             MO   LAW ENFORCEMENT

            DOWN BURST CAUSED ROOF DAMAGE TO SHERRIFS HOME. IN
            ADDITION, LARGE BARN WAS BLOWN DOWN AND TREES WERE
            UPROOTED AND SNAPPED OFF TWENTY FEET UP.

FEH