960
ACUS48 KWNS 300844
SWOD48
SPC AC 300842
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0342 AM CDT SAT MAY 30 2026
VALID 021200Z - 071200Z
..DISCUSSION
..TUESDAY/DAY 4 TO THURSDAY/DAY 6
AT MID-LEVELS, A RIDGE IS FORECAST TO MOVE SLOWLY EASTWARD FROM THE
UPPER MISSISSIPPI VALLEY ON TUESDAY TO THE NORTHEASTERN U.S. BY
THURSDAY. DURING THAT TIME, A SHORTWAVE TROUGH IS FORECAST TO MOVE
SLOWLY EASTWARD ACROSS THE NORTH-CENTRAL U.S. ISOLATED SEVERE
THUNDERSTORMS WILL BE POSSIBLE AHEAD OF THE TROUGH EACH AFTERNOON
AND EVENING. THE GREATEST SEVERE THREAT IS CURRENTLY EXPECTED IN THE
DAKOTAS ON TUESDAY AND WEDNESDAY, AND IN THE UPPER MISSISSIPPI
VALLEY ON THURSDAY. REGARDING THE SPATIAL EXTENT OF ANY SEVERE
THREAT, SOME UNCERTAINTY EXISTS CONCERNING THE TIMING OF THE TROUGH
AND THE LOCATION OF MAXIMUM INSTABILITY.
..FRIDAY/DAY 7 AND SATURDAY/DAY 8
MULTIPLE SHORTWAVE TROUGHS ARE FORECAST TO MOVE ACROSS THE CENTRAL
U.S. ON FRIDAY AND SATURDAY. DURING THIS TIME, MOISTURE AND
INSTABILITY IS FORECAST TO BE MAXIMIZED IN THE GREAT PLAINS. AS
SURFACE TEMPERATURES HEAT UP EACH DAY, THUNDERSTORM DEVELOPMENT AND
POTENTIALLY AN ISOLATED SEVERE THREAT WILL BE POSSIBLE ACROSS A
RELATIVELY BROAD MOIST SECTOR. CONCERNING PREDICTABILITY, THE
CONVOLUTED PATTERN INTRODUCES CONSIDERABLE UNCERTAINTY AS TO WHERE
THE GREATEST SEVERE THREAT WILL BE.
..BROYLES.. 05/30/2026
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