162
ACUS03 KWNS 300726
SWODY3
SPC AC 300725
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0225 AM CDT THU JUL 30 2026
VALID 011200Z - 021200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS
OF THE OHIO AND TENNESSEE VALLEYS INTO THE CENTRAL GULF COAST
STATES...AND OVER PARTS OF CENTRAL AND EASTERN NEW MEXICO...
..SUMMARY
ISOLATED SEVERE STORMS APPEAR POSSIBLE ACROSS PORTIONS OF THE OHIO
AND TENNESSEE VALLEYS INTO THE CENTRAL GULF COAST STATES, AND OVER
PARTS OF CENTRAL AND EASTERN NEW MEXICO SATURDAY AFTERNOON AND
EVENING.
..SYNOPSIS
A MID-LEVEL TROUGH INITIALLY FROM THE GREAT LAKES INTO THE OZARK
PLATEAU SATURDAY MORNING IS FORECAST TO AMPLIFY OVER THE LOWER OH
AND THE LOWER MS VALLEYS THROUGH SATURDAY NIGHT. IN THE LOW LEVELS,
AN AREA OF LOW PRESSURE IS EXPECTED TO DEVELOP FROM WEST-CENTRAL IL
TO THE VICINITY OF THE IN/KY BORDER BY 12Z SUNDAY. MEANWHILE, A
TRAILING COLD FRONT WILL ADVANCE INTO THE LOWER MS AND THE TN
VALLEYS.
..OHIO AND TENNESSEE VALLEYS INTO THE CENTRAL GULF COAST STATES
A FAIRLY WIDESPREAD AREA OF SHOWERS AND THUNDERSTORMS IS EXPECTED TO
BE ONGOING AT 12Z SATURDAY ACROSS PORTIONS OF THE LOWER OH, TN, AND
LOWER MS VALLEYS. A SUBSET OF THAT CONVECTION IS LIKELY TO PERSIST
INTO AFTERNOON WITHIN THE PRE-FRONTAL WARM SECTOR, AIDED BY HEIGHT
FALLS ALOFT, WARM ADVECTION, AND MOISTURE TRANSPORT ALONG A 25-35 KT
LOW-LEVEL JET (LLJ). ON THE WESTERN FLANK OF THE MORE PERSISTENT
STORMS, CLOUD BREAKS MAY ALLOW FOR STRONGER HEATING OF A MOIST
BOUNDARY LAYER, YIELDING A POTENTIALLY NARROW AXIS OF MODERATE
INSTABILITY BY AFTERNOON AHEAD OF THE COLD FRONT.
DIURNALLY ENHANCED STORMS APPEAR LIKELY WITHIN THE CORRIDOR OF
GREATER AIR MASS DESTABILIZATION, GENERALLY FROM CENTRAL KY AND
MIDDLE TN INTO MS, AL, AND POTENTIALLY WESTERN GA. WHILE THE
STRONGEST DEEP-LAYER SHEAR IS FORECAST ACROSS THE NORTHERN EDGE OF
THE WARM SECTOR, MAINLY NORTH OF THE OH RIVER, AN AREA OF STRONGER
LOW-LEVEL SHEAR MAY PERSIST ACROSS PORTIONS OF KY AND TN, COINCIDENT
WITH THE SOUTHERN EXTENSION OF THE LLJ. LOCALLY DAMAGING WIND GUSTS
APPEAR TO BE THE PRIMARY HAZARD WITH THE MOST INTENSE STORMS;
HOWEVER, SOME TORNADO THREAT COULD MATERIALIZE FROM PORTIONS OF IN
AND OH INTO MIDDLE TN WITHIN THE ZONE OF STRONGER LOW-LEVEL SHEAR.
..CENTRAL AND EASTERN NEW MEXICO
THERE IS SOME MODEL SIGNAL FOR A WEAK MID-LEVEL DISTURBANCE TO
PROGRESS SOUTH WITHIN THE EASTERN PERIPHERY OF THE UPPER HIGH ON
SATURDAY. THE GLANCING INFLUENCE OF THAT FEATURE WILL COMBINE WITH
THE UPSLOPE FLOW OF A MOIST AND MODERATELY UNSTABLE AIR MASS TO
GENERATE AFTERNOON THUNDERSTORMS ALONG THE FAVORED TERRAIN. WHILE
VERTICAL SHEAR IS NOT EXPECTED TO BE PARTICULARLY STRONG, THE
PRESENCE OF STEEP LOW/MID-LEVEL LAPSE RATES MAY SUPPORT A FEW SEVERE
STORMS CAPABLE OF LARGE HAIL AND DAMAGING WINDS.
..MEAD.. 07/30/2026
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