Monday through Saturday Discussion

By: NWS
By: NWS

AT SURFACE...HIGH PRESSURE AND A MUCH DRIER AIRMASS WILL LINGER INTO THE FIRST PART OF NEXT WEEK. EVEN THOUGH THE CENTER OF THE HIGH WILL GET NO CLOSER THAN THE OHIO VALLEY AND THE MID ATLANTIC STATES...STILL LOOKING AT SUB-FREEZING TEMPERATURES ACROSS MOST INTERIOR LOCATIONS TUESDAY MORNING (EXCEPTION MAY BE SE ALA/SW GA) BUT ABOVE HARD FREEZE LEVELS. HIGH SLIDES TO THE EAST ON TUESDAY WITH VEERING WINDS TO ELY TUES AND SELY BY WED...BUT HIGH CONTINUES TO RIDGE WESTWARD ACROSS THE GULF COAST STATES. MEANWHILE...ALOFT H5 TROUGH EXITS EWD INTO ATLC BY TUES AND UPPER FLOW BECOMES NEAR ZONAL (FLAT RIDGE) BY WEDNESDAY WITH WEAK RIDGING DEVELOPING TOWARD ON THURS. THEN...ANOTHER SHORT WAVE DROPS OUT OF CANADA AND INTO THE MIDWEST AND BEGINS TO AMPLIFY MID-CONUS TROUGH SEWD. THIS WILL ALLOW DEEP LAYER LOW TO DEVELOP OVER THE MIDWEST. THE ASSOCIATED COLD FRONT WILL MOVE SEWD WITH GFS MORE BULLISH BRINGING IT THRU LATE FRI OR EARLY SAT WITH A THIN BAND OF MOISTURE AHEAD OF IT ON FRI. ECMWF WITH WEAKER FRONT FIZZLING OUT NW OF CWA AND LITTLE IF ANY MOISTURE REACHING CWA...ESPECIALLY EAST OF APALACH RIVER. THIS FAR OUT FOR LEAN TOWARDS DRIER SOLUTION SO AOB 20 PCT POPS END OF EXTENDED PERIOD. AS FAR AS TEMPS...AFTER BELOW NORMAL MON NIGHT-TUES NIGHT EXPECT A GRADUAL WARMING TREND BEGINNING WEDNESDAY WITH HIGH TEMPS ABOVE CLIMO...REACHING THE LOW-MID 70S THURS-FRI BEFORE ADDED CLOUDS ASSOCD WITH FRONT DROP TEMPS TO CLIMO OR NEAR 70. LOW TEMPERATURES WILL CREEP UP TO CLIMO...MID-UPPER 40S WED NIGHT AND ABOVE CLIMO...LOW 50S THURS AND FRI NIGHT.


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