SWODY2
SPC AC 281724
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1224 PM CDT TUE SEP 28 2010
VALID 291200Z - 301200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
AMPLIFIED UPPER FLOW REGIME WILL CONTINUE WEDNESDAY AND FEATURE A
TROUGH/LOW OVER THE SERN STATES AND A RIDGE ACROSS THE WRN PORTIONS
OF THE COUNTRY. A SECONDARY DISTURBANCE WILL DIG SEWD INTO THE WRN
GREAT LAKES REGION/UPPER MS VLY...ACTING TO REINFORCE THE MEAN
TROUGH. AT THE SAME TIME...A TROPICAL CYCLONE WILL EJECT NNE FROM
CUBA...ACROSS FL AND TOWARD THE SERN COAST BY LATE IN THE PERIOD.
...SRN FL...COASTAL PLAINS SC/NC/VA...
TROPICAL DEPRESSION 16 IS EXPECTED TO BECOME A TROPICAL STORM TODAY
SOUTH OF CUBA. NATIONAL HURRICANE CENTER FORECAST TRACK TAKES THE
SYSTEM ACROSS SRN/ERN FL WEDNESDAY AND OFF THE SC COAST BY 12Z
THURSDAY. SYSTEM WILL PROBABLY TAKE ON SUB-TROPICAL CHARACTERISTICS
LATE IN THE DAY 2 PERIOD WITH AN EVER-EXPANDING ENVELOPE OF ENHANCED
LOW-LEVEL WIND FIELDS ALONG ERN PERIPHERY OF THE SERN STATES UPPER
LOW. THERE WILL BE A MORNING THREAT OF ISOLATED DAMAGING
WINDS/TORNADOES ACROSS ERN FL PENINSULA UNTIL THE SFC CYCLONE
DEVELOPS OFFSHORE. ATTENTION WILL THEN TURN TO WEDNESDAY NIGHT AS
THE RICH THETA-E AIR MASS IS TRANSPORTED WWD INTO THE SC/NC/VA
COASTAL PLAINS. FORECAST SOUNDINGS EXHIBIT INCREASING 0-1KM SHEAR
OF 40-50 KTS AND THE THREAT FOR ISOLATED TORNADOES WILL ESCALATE
OVERNIGHT WEDNESDAY.
..RACY.. 09/28/2010
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