Severe Thunderstorm Warning 80, NWS Springfield, MO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
626 PM CDT WED MAY 26 2010

...UPDATE TO AVIATION...

.DISCUSSION...

A WARM AND HUMID AIRMASS REMAINED OVER THE REGION WEDNESDAY
UNDERNEATH AN UPPER RIDGE AXIS EXTENDING FROM TEXAS TO THE GREAT
LAKES. CONVECTION THROUGH EARLY AFTERNOON HAS BEE CONFINED ACROSS
THE EASTERN OZARKS INTO SOUTHEAST MISSOURI WHERE DEEP MOISTURE
CONVERGENCE WAS IN PLACE. THE LACK OF SURFACE CONVERGENCE AND
SLIGHTLY DRIER ALOFT SEEMED TO BE THE INHIBITING FACTORS TO
THUNDERSTORM DEVELOPMENT ACROSS THE REMAINDER OF THE MISSOURI
OZARKS AND SOUTHEAST KANSAS.

ISOLATED SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE THROUGH
THE EARLY EVENING WITH THE ACTIVITY MORE FOCUSED FROM SOUTH
CENTRAL INTO SOUTHEAST MISSOURI. PATCHY FOG WILL AGAIN DEVELOP
LATE TONIGHT AND EARLY THURSDAY.

THURSDAY WILL BE SIMILAR TO THE PAST COUPLE OF DAYS. A LINGERING
MOIST AND UNSTABLE AIRMASS WILL AGAIN LEAD TO PRIMARILY DIURNALLY
DRIVEN CONVECTION. A VORTICITY LOBE MAY ROTATE AROUND THE UPPER
RIDGE FROM THE UPPER MIDWEST TOWARD THE OHIO RIVER VALLEY. THIS
MAY ENHANCE THE COVERAGE OF THUNDERSTORMS ACROSS SOUTH CENTRAL
MISSOURI EASTWARD. HOWEVER THE OVERALL LACK OF SIGNIFICANT SYNOPTIC
SCALE LIFT WILL RESULT IN UNORGANIZED CONVECTION AND AN OUTSIDE
RISK FOR SEVERE WEATHER.

SURFACE HIGH PRESSURE WILL BUILD INTO THE REGION LATER THURSDAY
INTO FRIDAY. A DRIER AIRMASS WILL ADVECT INTO THE OZARKS FRIDAY AS
THE SURFACE RIDGE EXTENDS FROM THE GREAT LAKES INTO THE OZARKS.
THIS WILL SHUT OFF CONVECTIVE DEVELOPMENT FOR A COUPLE OF DAYS BUT
HAVE ONLY MODEST IMPACTS ON DAY TIME TEMPERATURES. OVERNIGHT LOWS
WILL BE A BIT COOLER GIVEN THE DRIER AIRMASS.

THE UPPER RIDGE WILL FLATTEN LATE IN THE WEEKEND INTO EARLY NEXT
WEEK AS A SHORTWAVE TROUGH RIDES ACROSS THE NORTHERN TIER OF THE
U.S. THIS MAY CAUSE A WEAK FRONT TO DROP INTO THE AREA FOR
MEMORIAL DAY. ISOLATED CONVECTION MAY DEVELOP AS EARLY SUNDAY AS
MOISTURE INCREASES WITH A BETTER CHANCE ON MEMORIAL DAY. AT THIS
TIME IT APPEARS THE ACTIVITY ON MEMORIAL DAY WILL BE ISOLATED TO
SCATTERED WITH A LIMITED RISK FOR SEVERE WEATHER.

FOSTER

&&

.AVIATION...

FOR THE 00Z KSGF...KJLN AND KBBG TAFS...ISOLATED TO WIDELY
SCATTERED THUNDERSTORMS ARE ONCE AGAIN DEVELOPING ACROSS THE REGION
DURING THE PEAK HEATING PERIOD. THIS ACTIVITY WILL CONTINUE INTO
THE EARLY EVENING HOURS...THEN SHOULD START TO DISSIPATE AFTER
SUNSET. WITH THIS ACTIVITY BEING ISOLATED TO SCATTERED IN NATURE
CONFIDENCE IN A TAF SITE BEING AFFECT IS LOW AND WILL JUT INCLUDED
VCTS. HOWEVER...THUNDERSTORM ACTIVITY IS CURRENTLY DEVELOPING CLOSE
ENOUGH TO THE KBBG SITE THAT A TEMPO GROUP FOR THUNDER AS BEEN ADDED.
BRIEF MVFR CONDITIONS WILL BE POSSIBLE WITH ANY THUNDERSTORM
ACTIVITY.

LIGHT FOG WILL ONCE AGAIN BE POSSIBLE OVERNIGHT AS A MOIST AIR
MASS WILL BE IN PLACE OVER THE REGION. THE WARM AND HUMID AIRMASS
WILL REMAIN OVER THE AREA TOMORROW...AND ISOLATED TO SCATTERED
THUNDERSTORMS WILL ONCE AGAIN BE POSSIBLE.

WISE

&&

.SGF WATCHES/WARNINGS/ADVISORIES...
MO...NONE.
KS...NONE.
&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1241 PM CDT WED MAY 26 2010

KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-271745-
BOURBON-CRAWFORD-CHEROKEE-BENTON-MORGAN-MILLER-MARIES-VERNON-
ST. CLAIR-HICKORY-CAMDEN-PULASKI-PHELPS-BARTON-CEDAR-POLK-DALLAS-
LACLEDE-TEXAS-DENT-JASPER-DADE-GREENE-WEBSTER-WRIGHT-NEWTON-
LAWRENCE-CHRISTIAN-DOUGLAS-HOWELL-SHANNON-MCDONALD-BARRY-STONE-
TANEY-OZARK-OREGON-
1241 PM CDT WED MAY 26 2010

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THE HAZARDOUS WEATHER RISK LEVEL IS...LIMITED.

WEATHER HAZARDS EXPECTED...

THE THUNDERSTORM WIND GUST RISK IS LIMITED WITH GUSTS OF 60 MPH
POSSIBLE.

THE HAIL RISK IS LIMITED WITH ONE INCH IN DIAMETER HAIL POSSIBLE.

THE FLASH FLOOD RISK IS LIMITED.

THE LIGHTNING RISK IS LIMITED.

DISCUSSION...

SCATTERED THUNDERSTORMS WITH A FEW SHORT LIVED STRONG TO SEVERE
STORMS WILL BE POSSIBLE WITH 60 MPH WIND GUSTS AND LARGE HAIL THE
PRIMARY HAZARDS. LOCALIZED FLASH FLOODING WILL ALSO BE POSSIBLE
WHERE SLOW MOVING STORMS PERSIST OR BRIEFLY TRAIN OVER THE SAME
AREAS PRODUCING HEAVY THUNDERSTORM DOWNPOURS. THUNDERSTORM
ACTIVITY WILL GRADUALLY WEAKEN DURING THE EVENING HOURS.

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

SCATTERED THUNDERSTORMS ARE EXPECTED AGAIN THURSDAY FROM LATE
MORNING THROUGH THE EVENING HOURS. A FEW OF THE STRONGER STORMS
COULD BECOME SEVERE...WITH A LIMITED RISK FOR DAMAGING WINDS IN
EXCESS OF 60 MPH AND LARGE HAIL.

A LIMITED RISK FOR THUNDERSTORMS IS EXPECTED AGAIN SUNDAY NIGHT
INTO MONDAY AND TUESDAY AS A WEAK FRONT MOVES SOUTHEAST INTO THE
REGION. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

 SPOTTER ACTIVATION IS NOT EXPECTED DUE TO THE ISOLATED NATURE OF
 ANY SEVERE WEATHER THAT DEVELOPS.

&&

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

FOSTER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
541 PM CDT WED MAY 26 2010

MOZ066-067-262315-
VERNON MO-ST. CLAIR MO-
541 PM CDT WED MAY 26 2010

...SIGNIFICANT WEATHER ALERT FOR NORTHEASTERN VERNON AND WEST CENTRAL
ST. CLAIR COUNTIES UNTIL 615 PM CDT...

AT 539 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF HARWOOD...OR 9 MILES
SOUTHEAST OF RICH HILL...MOVING SOUTHEAST AT 15 MPH. PENNY SIZE HAIL
IS EXPECTED WITH THIS STORM.

CCC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
743 PM CDT WED MAY 26 2010

MOZ103-104-270115-
STONE MO-TANEY MO-
743 PM CDT WED MAY 26 2010

...SIGNIFICANT WEATHER ALERT FOR SOUTHEASTERN STONE AND SOUTHWESTERN
TANEY COUNTIES UNTIL 815 PM CDT...

AT 738 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 4 MILES NORTHWEST OF RIDGEDALE...OR 8 MILES
SOUTHWEST OF BRANSON...MOVING SOUTH AT 20 MPH. PENNY SIZE HAIL...AND
WINDS AROUND 50 MPH ARE EXPECTED WITH THIS STORM.

PERSONS ON OR NEAR TABLE ROCK LAKE...GET OUT OF THE WATER AND MOVE
INDOORS OR INSIDE A VEHICLE. THUNDERSTORMS POSE A VARIETY OF LIFE
THREATENING HAZARDS TO BOATERS INCLUDING STRONG WINDS...VERY CHOPPY
WATERS...HAIL...DEADLY CLOUD TO GROUND LIGHTNING...AND POTENTIALLY
BLINDING RAINS. DON'T BE CAUGHT OUT ON THE WATER IN A THUNDERSTORM...
BOATERS SHOULD IMMEDIATELY SEEK SAFE HARBOR.

CCC