Severe Thunderstorm Warning 78, NWS Wichita, KS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WICHITA KS
345 AM CDT TUE MAY 18 2004

.DISCUSSION...

MAIN CONCERNS TODAY ARE CONVECTION TDY.

TDY: INTERESTING FORECAST IN THE SHORT TERM WITH CONVECTION MAINLY
NORTH OF THE AREA.  ISENTROPIC LIFT AND 700H S/WV STARTING TO
INITIATE SOME CONVECTION IN NERN KS ATTM ALONG THE MAIN SYNOPTIC
BOUNDARY. DO EXPECT SHRA/TSRA INCREASING TRENDS TO CONTINUE ACROSS
NERN KS THIS MORNING AS ISENTROPIC LIFT CONTINUES DURING THE AM
HOURS.  MAY SEE SOME OF THIS CONVECTION DROP DOWN INTO NRN PARTS OF
THE CWA LATER THIS MORNING, SO WILL CARRY SOME POPS FOR THIS AREA
DURING THE AM.

NEXT CONCERN IS CONVECTION CHCS THIS AFTN. EARLIER THINKING WAS
STATIONARY FRONT WOULD SAG SOUTH INTO SERN KS PROVIDING CONVECTION
CHCS, BUT LATEST MODEL TRENDS ARE TO WASH THIS FRONT OUT ACROSS NERN
KS THIS AFTN, WITH MAIN CONVECTION FOCUS IN ERN/SERN KS DEPENDENT ON
ANY MESOSCALE OUTFLOW BOUNDARY GENERATED BY THIS MORNINGS
CONVECTION.  ALSO, MESOETA DOES SUGGEST THAT A PSUDO-WARM FRONT WILL
MOVE OUT OF OK THIS AFTN WITH MID LEVEL WARMING CAPPING OFF ANY
CONVECTION SOUTH OF THE WARM FRONT.  DIFFICULT TO PINPOINT WHERE
THESE BOUNDARY WILL BE LOCATED AND WHERE CONVECTION WILL INITIATE IN
THE ERN HALF OF KS TODAY BUT VERY UNSTABLE AIRMASS IN PLACE FOR SVR
WX CHC IF ANY TSRA THAT DOES DVLP.  ALSO LOW LEVEL WIND SHEAR CLOSER
TO THE WARM FRONT/OUTFLOW BOUNDARY ALSO SUGGESTS AN ISOLATED TORNADO
THREAT.  SO WILL GO WITH CHC POPS IN MOST LOCATIONS TODAY, WITH
MODEL SOUNDINGS SUGGESTING MID LEVEL WARMING MAY BRING TSRA CHCS TO
AN END AFTER 00Z/WED.  SO EXPECT TSRA CHCS TO DIMINISH DURING THE
EVENING HOURS.

WED-THU NIGHT:  FRONTAL BOUNDARY LIFTS BACK NORTH LATE TNGT OR
DURING DAY WED. WITH WEAK MID LEVEL WAA AND RIDGING CAPPING OFF ANY
TSRA CHCS. WITH LOTS OF SUNSHINE AND MID LEVEL TEMPS WARMING, WILL
SEE TEMPS WARM NICELY INTO THE LOW 90 TO UPPER 80S IN MOST LOCATIONS
FOR WED.  WRN END OF THE FRONTAL BOUNDARY SAGS BACK INTO WRN KS BY
THU NIGHT WITH LOTS OF SUNHSINE DURING THE DAY ON THU.  CONVECTION
POSSIBLE WEST OF THE AREA TRYING TO MOVE BACK INTO CEN KS AFTER
MIDNIGHT THU AS FRONTAL BOUNDARY STALLS.   SO WILL KEEP A LOW POP
GOING IN THIS AREA FOR THIS CHC LATE THU NIGHT.

FRI-SAT: SW UPPER FLOW CONTINUES DURING THIS PERIOD WITH QUASI
STATIONARY FRONTAL BOUNDARY MOVING FURTHER NORTH IN RESPOSE TO THE
WEAK MID LEVEL WAA.  SO THIS TIME FRAME LOOKS DRY AND WARM FOR NOW
WITH MID LEVEL CAP AND LACK OF ANY LOW LEVEL FOCUS KEEPING TSRA CHCS
NIL.

SUN-MON: TIMING OF THE NEXT S/WV TO COME OUT OF THE SW FLOW COMES
INTO THE AREA ON SUN.  ECM AND GFS DIFFER ON THE PLACEMENT OF THIS
S/WV AS MOVES ACROSS KS WITH THE ECM FURTHER NORTH AND WEAKER.  EVEN
WITH MODEL DIFFERENCES, SFC LOW DVLPMNT ACROSS KS LEADS TO CHCS FOR
TSRA ON SUN INTO MON.

&&
.PRELIMINARY POINT TEMPS/POPS...
WICHITA         77  65  91  67 /  20  20   5  10
HUTCHINSON      74  64  94  66 /  20  20   5  10
NEWTON          74  64  91  66 /  30  20   5  10
ELDORADO        75  65  90  67 /  30  30   5  10
STROTHER FIELD  78  66  91  67 /  20  20   5  10
RUSSELL         71  61  96  63 /  20  20   5  10
GREAT BEND      72  63  96  64 /  20  20   5  10
SALINA          71  62  93  64 /  40  20   5  10
MCPHERSON       72  64  93  65 /  30  20   5  10
COFFEYVILLE     79  66  87  67 /  30  20   5  10
CHANUTE         75  66  87  67 /  40  30   5  10
IOLA            73  66  87  67 /  40  30   5  10
&&

.ICT WATCHES/WARNINGS/ADVISORIES...NONE.
&&

22/KETCHAM

HAZARDOUS WEATHER OUTLOOK...CORRECTED TYPO
NATIONAL WEATHER SERVICE WICHITA KS
545 AM CDT TUE MAY 18 2004

KSZ032-033-047>053-067>072-082-083-091>096-098>100-191200-
RUSSELL-LINCOLN-BARTON-ELLSWORTH-SALINE-RICE-MCPHERSON-MARION-CHASE-
RENO-HARVEY-BUTLER-GREENWOOD-WOODSON-ALLEN-KINGMAN-SEDGWICK-HARPER-
SUMNER-COWLEY-ELK-WILSON-NEOSHO-CHAUTAUQUA-MONTGOMERY-LABETTE-
545 AM CDT TUE MAY 18 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND SOUTHEAST KANSAS.

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE OF TWO ROUNDS OF SEVERE WEATHER ACROSS THE AREA
TODAY.

THIS MORNINGS THUNDERSTORMS MAY PRODUCE LARGE HAIL, MAINLY ALONG AND
EAST OF THE TURNPIKE AS AN UPPER LEVEL DISTURBANCE MOVES ACROSS THE
AREA.

OUTFLOW BOUNDARIES FROM THE MORNING CONVECTION, AND AN APROACHING
WARM FRONT OUT OF OKLAHOMA WILL LEAD TO REDEVELOPMENT OF
THUNDERSTORMS THIS AFTERNOON. THE MAIN AREA OF CONCERN THIS
AFTERNOON IS MAINLY EAST OF THE TURNPIKE. THE MAIN SEVERE WEATHER
THREAT WILL BE LARGE HAIL AND DAMAGING WINDS, BUT AN ISOLATED
TORNADO CANNOT BE RULED OUT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A SLIGHT CHANCE OF THUNDERSTORMS RETURNS TO CENTRAL KANSAS LATE
THURSDAY AND AGAIN THIS WEEKEND.  ITS TOO EARLY TO TELL IF ANY OF
THESE THUNDERSTORMS WILL BE SEVERE.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS POSSIBLE THIS AFTERNOON MAINLY EAST OF
THE TURNPIKE.

&&

FOR A GRAPHICAL VERSION OF THIS INFORMATION, SEE OUR
WEBPAGE AT (LOWERCASE) HTTP://WWW.CRH.NOAA.GOV/ICT/HWO/HWOICT.HTM

KETCHAM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WICHITA KS
444 AM CDT TUE MAY 18 2004

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

0420 AM     HAIL             1 S NEW CAMBRIA         38.87N 97.51W
05/18/2004  1.00 INCH        SALINE             KS   LAW ENFORCEMENT

&&

KETCHAM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WICHITA KS
553 AM CDT TUE MAY 18 2004

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

0543 AM     HAIL             3 SE MARION             38.32N 96.98W
05/18/2004  0.88 INCH        MARION             KS   LAW ENFORCEMENT

&&

ES