484
ACUS01 KWNS 130102
SWODY1
SPC AC 130100
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0800 PM CDT FRI JUN 12 2026
VALID 130100Z - 131200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE SOUTHERN HIGH PLAINS...
..SUMMARY
SEVERE STORMS CAPABLE OF PRODUCING LARGE HAIL AND SCATTERED SEVERE
WIND GUSTS WILL SPREAD EAST-SOUTHEASTWARD ACROSS PARTS OF THE
SOUTH-CENTRAL HIGH PLAINS INTO THE OVERNIGHT HOURS. LOCALLY DAMAGING
GUSTS WILL REMAIN POSSIBLE ACROSS PARTS OF THE MID-ATLANTIC TONIGHT.
..SOUTH-CENTRAL HIGH PLAINS
BETWEEN A BROAD LARGE-SCALE TROUGH OVER THE NORTHERN CONUS AND AN
UPPER RIDGE OVER THE SOUTHERN PLAINS, WATER-VAPOR IMAGERY INDICATES
A SUBTLE/LOW-AMPLITUDE IMPULSE TRACKING EASTWARD ACROSS THE
CENTRAL/SOUTHERN HIGH PLAINS -- EMBEDDED WITHIN A BELT OF ENHANCED
MIDLEVEL WESTERLY FLOW. THIS FEATURE AND ACCOMPANYING 40-50 KT OF
EFFECTIVE SHEAR WILL MAINTAIN AN UPSCALE-GROWING CLUSTER OF STORMS
AS IS TRACKS EAST-SOUTHEASTWARD ACROSS THE SOUTHERN/CENTRAL HIGH
PLAINS INTO THE OVERNIGHT HOURS. IN THE NEAR-TERM, LARGE HAIL AND
LOCALLY SEVERE GUSTS WILL BE THE MAIN CONCERNS, ESPECIALLY WITH THE
MORE SEPARATED UPDRAFTS/SUPERCELL STRUCTURES EVOLVING ALONG THE
SOUTHERN FLANK OF THE CONVECTIVE CLUSTER IN NORTHEASTERN NM. WITH
TIME, STRENGTHENING OUTFLOW AND A NOCTURNAL LOW-LEVEL JET WILL
PROMOTE FURTHER UPSCALE GROWTH AND SCATTERED SEVERE/DAMAGING GUSTS.
SEE SEVERE THUNDERSTORM WATCH #323 FOR MORE INFORMATION.
..MID-ATLANTIC
A CLUSTER OF THUNDERSTORMS TRACKING EAST-SOUTHEASTWARD ACROSS THE
MID-ATLANTIC WILL CONTINUE TO WEAKEN OVER THE NEXT COUPLE HOURS AS
THE BOUNDARY LAYER NOCTURNALLY STABILIZES TOWARD THE COAST.
..EASTERN NEBRASKA AND EASTERN KANSAS/WESTERN MISSOURI
POSITIVE LOW-LEVEL THETA-E ADVECTION AT THE NOSE OF A STRENGTHENING
LOW-LEVEL JET WILL PROMOTE ISOLATED THUNDERSTORM DEVELOPMENT LATE IN
THE PERIOD. STEEP MIDLEVEL LAPSE RATES ATOP A STATICALLY STABLE
BOUNDARY LAYER WILL MOSTLY FAVOR ELEVATED STORMS. SUFFICIENT
DEEP-LAYER SHEAR WILL SUPPORT CONVECTIVE ORGANIZATION, AND SEVERE
HAIL WILL BE POSSIBLE WITH THE STRONGER STORMS THAT EVOLVE.
..WEINMAN.. 06/13/2026
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