The statement from the Storm Prediction Center...
As usual, pay attention to the National Weather Service or your favorite mind-numbing radio or TV station for weather alerts as this thing develops...
...THERE IS A SLGT RISK OF SVR TSTMS FRI AFTN AND EVE ACROSS PARTS
OF THE TN VALLEY/CUMBERLAND PLATEAU...AND CNTRL/SRN APPALACHIANS
INTO THE MID ATLANTIC COAST....
...THERE IS A SLGT RISK OF SVR TSTMS FRI AFTN AND EVE ACROSS PARTS
OF THE SRN HIGH PLAINS...
...SYNOPSIS...
MODELS CONTINUE TO INDICATE THAT REMNANTS OF A SIGNIFICANT UPPER
LOW/TROUGH WILL LIFT INTO THE UPPER GREAT LAKES REGION BY 12Z
FRIDAY. THE SYSTEM IS THEN PROGGED TO TURN EASTWARD...AND GRADUALLY
SOUTHEASTWARD...ACCELERATING TOWARD THE NORTH ATLANTIC COAST LATE
FRIDAY/FRIDAY NIGHT...WITHIN A CONFLUENT REGIME TO THE WEST AND
SOUTH OF AN UPPER LOW OVER THE CANADIAN MARITIMES. AS THIS
OCCURS...SUBTROPICAL RIDGING APPEARS LIKELY TO FLATTEN ACROSS THE
LOWER OHIO/TENNESSEE VALLEYS INTO THE MID ATLANTIC COAST...WHILE THE
HIGH CENTER WEAKENS AND SHIFTS EASTWARD...AWAY FROM SOUTH ATLANTIC
COASTAL AREAS.
...OHIO/TENNESSEE VALLEYS EASTWARD TO MID ATLANTIC COAST... THE MOST SUBSTANTIAL SURFACE HEATING AND DESTABILIZATION...WHICH COULD BECOME MODERATE TO STRONG BY FRIDAY AFTERNOON...IS EXPECTED ACROSS PARTS OF THE TENNESSEE VALLEY/CUMBERLAND PLATEAU...AND AREAS TO THE LEE OF THE SOUTHERN/CENTRAL APPALACHIANS. THIS MAY REMAIN SOUTH OF THE MORE SUBSTANTIVE MID-LEVEL HEIGHT FALLS...AT LEAST THROUGH THE DAYTIME HOURS...BUT MODELS ARE SUGGESTIVE THAT INHIBITION WILL WEAKEN SUFFICIENTLY FOR CONSIDERABLE THUNDERSTORM ACTIVITY ACROSS MUCH OF THE REGION DURING THE MID/LATE AFTERNOON HOURS. ON THE SOUTHERN FRINGE OF THE STRONGER WESTERLIES...30-50 KT 500 MB FLOW WILL PROBABLY ENHANCE STORM DEVELOPMENT IN THE PRESENCE OF MIXED LAYER CAPE GENERALLY ON THE ORDER OF 1500-2000 J/KG. A FEW SEVERE STORMS/STORM CLUSTERS ARE POSSIBLE...WITH THE RISK FOR DAMAGING WINDS AND LARGE HAIL.
0 comments :
Post a Comment