100
ACUS01 KWNS 271232
SWODY1
SPC AC 271230
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0730 AM CDT SUN SEP 27 2026
VALID 271300Z - 281200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF
THE CENTRAL AND NORTHERN HIGH PLAINS...
..SUMMARY
ISOLATED THUNDERSTORMS CAPABLE OF LARGE HAIL WILL BE POSSIBLE ACROSS
PORTIONS OF WESTERN NEBRASKA AND THE BLACK HILLS OF SOUTH DAKOTA.
..PORTIONS OF THE CENTRAL AND NORTHERN HIGH PLAINS
A RESIDUAL MOIST AXIS OVER THE PLAINS WILL FEATURE 60S DEG F SURFACE
DEWPOINTS EXTENDING FROM THE SOUTHERN PLAINS NORTHWARD INTO NE/SD.
THE WESTERN PERIPHERY OF THE MOIST PLUME WILL UNDERGO STRONG HEATING
DESPITE SOME INCREASING HIGH CLOUD COVER. FORCING WILL LIKELY
REMAIN NEGLIGIBLE THROUGH THE DAY AND LIMIT STORM COVERAGE WITH
MODERATE BUOYANCY DEVELOPING IN WESTERN NE. DURING THE EVENING,
THUNDERSTORM COVERAGE MAY INCREASE IN RESPONSE TO INCREASING
LARGE-SCALE ASCENT ASSOCIATED WITH AN APPROACHING SUBTLE VORTICITY
MAXIMA AND AN INCREASE IN THE LOW-LEVEL JET. LARGE HAIL WILL BE
POSSIBLE WITH THE STRONGEST OF THESE STORMS.
ELSEWHERE, SCATTERED THUNDERSTORMS ARE FORECAST OVER NORTH AND
CENTRAL TX LATE THIS AFTERNOON, AS WELL AS ISOLATED TO WIDELY
SCATTERED STORMS OVER NORTHERN UT INTO CENTRAL WY. LOCALIZED GUSTY
WINDS ARE POSSIBLE WITH THE STRONGER STORMS, BUT UNCERTAINTY IN
EXPECTED COVERAGE OF THESE GUSTS AND MAGNITUDE OF THE POTENTIAL
THREAT PRECLUDE A LOW-PROBABILITY SEVERE HIGHLIGHT THIS OUTLOOK
UPDATE.
..SMITH/BENTLEY.. 09/27/2026
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