DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 1256 AM CDT WED AUG 07 2013 VALID 071200Z - 081200Z ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE SOUTH-CENTRAL PLAINS... ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE MIDWEST/LOWER GREAT LAKES... ...SYNOPSIS... A CLOSED UPPER TROUGH WILL CONTINUE TO SLOWLY PIVOT OVER NORTHERN PORTIONS OF MANITOBA/ONTARIO...WITH A CYCLONIC BELT OF RELATIVELY STRONG MID-UPPER LEVEL WESTERLIES EXTENDING FROM THE NORTHERN HIGH PLAINS TO THE GREAT LAKES REGION. MEANWHILE...A SPLIT FLOW REGIME WILL PERSIST OVER THE WESTERN CONUS...WITH A SOUTHERN STREAM UPPER LOW CROSSING NM AS ANOTHER UPPER LOW SLOWLY APPROACHES COASTAL PORTIONS OF ORE/NORTHERN CA.
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