730
ACUS48 KWNS 280925
SWOD48
SPC AC 280923
DAY 4-8 CONVECTIVE OUTLOOK RESENT 1
NWS STORM PREDICTION CENTER NORMAN OK
0423 AM CDT TUE APR 28 2026
VALID 011200Z - 061200Z
..DISCUSSION
MEDIUM-RANGE GUIDANCE INDICATES THAT THE EVOLVING SPLIT FLOW MAY
MAINTAIN A BROADLY CONFLUENT MID-LEVEL REGIME ACROSS AND EAST OF THE
ROCKIES THROUGH THIS PERIOD. WHILE A BROAD AREA OF LOWER MID-LEVEL
HEIGHTS REMAINS CENTERED ACROSS THE ONTARIO/QUEBEC AND UPPER MIDWEST
THROUGH NORTHEAST, IT APPEARS THAT A MORE PROMINENT BLOCKING
RIDGE/HIGH MAY EVOLVE UPSTREAM NEAR THE BRITISH COLUMBIA/PACIFIC
NORTHWEST COAST BY LATE THIS COMING WEEKEND INTO EARLY NEXT WEEK. A
DEVELOPING LOW TO ITS SOUTHEAST MAY SLOWLY PROGRESS INLAND ACROSS
CALIFORNIA INTO THE SOUTHWEST, WITH DOWNSTREAM MID-LEVEL RIDGING
BUILDING ACROSS THE ROCKIES.
THERE IS CONSIDERABLE MODEL SPREAD CONCERNING EMBEDDED SHORT WAVE
DEVELOPMENTS, BUT IT APPEARS THAT POTENTIAL FOR STRONGER CONVECTION
WILL REMAIN GENERALLY LOW FOR THE TIME OF YEAR AND CONFINED TO PARTS
OF THE SOUTHERN TIER OF THE U.S., PERHAPS INCLUDING PARTS OF THE SAN
JOAQUIN VALLEY, AS WELL AS ALONG A LINGERING FRONTAL ZONE NEAR OR
JUST SOUTH OF THE GULF INTO SOUTHERN ATLANTIC COASTAL PLAIN. DUE TO
A COMBINATION OF LOW PREDICTABILITY AND LOW SEVERE WEATHER
POTENTIAL, SEVERE WEATHER PROBABILITIES ARE BEING MAINTAINED AT LESS
THAN 15 PERCENT THROUGH THIS PERIOD.
..KERR.. 04/28/2026
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