National Weather Service Raw Text Product

000 
ACUS1 KMKC 030609
MKC AC 030700

CONVECTIVE OUTLOOK...REF AFOS NMCGPH94O

VALID 031200 - 041200Z

REF WW 577...VALID UNTIL 0900Z.
REF WW 578...VALID UNTIL 1200Z.

THERE IS A HIGH RISK OF SVR TSTMS TDA OVR PTNS OF
ND..SD..NE..MN..AND XTRM NW IA..THE AREA IS TO THE RGT OF A LN FM INL
MKT 30 NW OMA EAR 50 W LBF 30 E RAP DIK 60 NNE ISN.

THERE IS A SLGT RISK OF SVR TSTMS TO THE RGT OF A LN FM ACY PKB
BMG BRL 40 S OMA RSL GCK 4DG 50 N GGW ...CONT...20 N ROC GON.

GEN TSTMS ARE FCST TO THE RGT OF A LN FM BVE HEZ GLH SGF OKC
50 S P07 ...CONT...20 S FHU 4CR 20 W CAO 30 SW LIC 30 S RKS TWF
PDT 50 N 4OM ...CONT...60 N BML PSM.

HIGH POTENTIAL FOR SGFNT LONG-TRACK TORNADOES EXPCD OVR PTNS OF NRN
PLAINS THIS AFTN INTO TNGT.

POWERFUL DYNAMICS COMBINED WITH DEEPENING SFC LOW WL SET THE STAGE
FOR OCCURRENCE OF MAJOR SVR WX OUTBREAK WITH TORNADOES A STG
POSSIBILITY. DIGGING UPR TROF OVR NRN INTRMTRGN FCST TO MOV INTO
THE CNTRL/NRN PLAINS WITH MAIN VORT CENTER POSITIONED OVR WRN ND/SD
BY 00Z. IMPRESSIVE WIND FIELDS ACCOMPANY THIS SYS IN THE WAY OF
55-60KT SWLY MID LVL JET OVR SLY 40-45KT AT H85 LVL. THUS VRY FVRBL
WIND PROFILES FROM SFC-MID LVLS ARE PROGD DUE TO DIRECTIONAL/SPD
SHEAR. FCST HELICITIES OVR 700 ARE EXPCD BY 00Z ACRS PTNS OF NRN
PLAINS AS THE SPD MAX MOVS ACRS ERN SD INTO WRN MN. STG UPWARD
MOTION IS PROGD AS THE VORT MAX/ASSOCD SPD MAX LIFTS NEWD INTO THE
UPR MS VALLEY. RH PROGS INDC A STG DRY AIR INTRUSION PUSHING NEWD
FM CO ACRS CNTRL PLAINS WHICH WL ENHANCE SVR PTNL .

STG WRM ADVCTN PAT ALREADY SETTING UP ACRS THE PLAINS AS LOW LVL
JET INCRS TO 40KT AT START OF PD. THIS WL ALLOW SUF LOW LVL MSTR TO
MOV NWD WITH MID 60S DWPNTS OVR MUCH OF HIGH RISK AREA BY TIME FNTL
BNDRY/SFC LOW MOV ACRS AREA. FCST LI/S IN -6 TO -10 RANGE AND LARGE
CAPES EXPCD FM NEB NWD TO CAN BDR WL SET THE STAGE FOR EXPLOSIVE
SUPERCELL DVLPMT. FNTL BNDRY WL PROVIDE TRIGGER FOR SVR CNVTN AND
MID LVL FLOW WL ALLOW ACTVTY TO PROGRESS NEWD INTO PTNS OF MN/IA
LATER IN THE PD. FURTHER S...AMS WL INITIALLY BE CAPPED DUE TO WRM
TEMPS ALF BUT MID LVL CD ADVCTN FM ASSOCD SHRTWV WL BREAK CAP AND
RELEASE PTNL ENERGY FOR SVR TSTMS INTO NWRN KS AS WELL.

OTR ISOLD SVR TSTMS ARE PSBL ALG THE FNTL BNDRY WHICH RMNS DRAPED
ACRS THE PTNS OF OHIO VALLEY/GRTLKS RGN EWD TO ATLC CST. WK
STEERING FLOW SUGS SVR IN THIS VCNTY TO BE MAINLY PULSE-TYPE WITH
DOWNBURST PTNL.

A MKCPWOMKC WL BE ISSUED ARND 0930Z.

..GRANT.. 07/03/93