Saturday through Wednesday

By: NWS
By: NWS

EXTENDED PERIOD BEGINS WITH SEVERAL SHORT WAVES DROPPING DOWN ERN PACIFIC RIDGE AND SERVING TO AMPLIFY WRN CONUS TROUGH. THIS IN TURN WILL SERVE TO AMPLIFY AN EQUALLY LARGE UPPER RIDGE OVER THE SOUTHEAST. EXPECT 500 MB HEIGHTS RISING TO AROUND 585 DM. SFC HIGH PRESSURE MOVES INTO THE WESTERN ATLANTIC BY FRIDAY NIGHT AND MOISTURE LEVELS INCREASE AS A SOUTHERLY RETURN FLOW DEVELOPS. HOWEVER...THE RIDGING ALOFT WILL SUPPRESS SHOWER AND THUNDERSTORM DEVELOPMENT AND RESULT IN SUMMERLIKE WARMTH ...ESPECIALLY AT NIGHT. MOST OF THE LATEST GUIDANCE SHOW A GRADUAL SLOWING OF THE WRN TROUGH WITH TIME...AND A NORTHWARD SHIFT OF THE ASSOCIATED FRONTS INSURING THAT THEY DO NOT REACH THE CWA THRU WEDNESDAY. ON WEDNESDAY...TROUGH FINALLY MAKES IT TO MID-CONTINENT AND BEGINS TO FLATTEN RIDGE ALLOWING A FRONTAL BOUNDARY TO APPROACH CWA BEYOND EXTENDED PERIOD. WITH DEEP LAYER MOISTURE AND DYNAMICS ABSENT...POPS WILL BE SILENT 10S OR LESS. INLAND CLIMO TEMPS FOR FINAL THIRD OF APRIL ARE MINS 54-56 AND MAX 81-82 DEGREES. UNDER DEEP RIDGE...MINIMUM TEMPS WILL REMAIN UPPER 50S-LOWER 60S THRU THE PERIOD. MAX TEMPS WILL REMAIN AT OR SLIGHTLY ABOVE CLIMO THRU PERIOD


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