SWODY2
SPC AC 271724
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1224 PM CDT SAT OCT 27 2007
VALID 281200Z - 291200Z
..NO SVR TSTM AREAS FORECAST...
..SYNOPSIS...
POLAR BRANCH OF THE WLYS WILL REMAIN CONFINED TO THE NRN TIER OF THE
COUNTRY ON SUNDAY. RECENT CUT-OFF LOW BEING ABSORBED INTO THESE
WLYS TODAY WILL QUICKLY DEAMPLIFY AND EJECT NEWD TO THE CANADIAN
MARITIMES EARLY ON SUNDAY. IN WAKE OF THIS IMPULSE...A STRONGER
MID-LEVEL WAVE WILL CONTINUE ESEWD FROM THE UPR GRTLKS REGION TO
QUEBEC AND THE NERN STATES BY 12Z MONDAY...REINFORCING A BROAD
LONGWAVE TROUGH OVER THE NERN QUARTER OF THE COUNTRY. MEANWHILE...
THE SUB-TROPICAL RIDGE WILL CONTINUE ELONGATED E-W ACROSS THE SRN
TIER OF THE COUNTRY. AT THE SFC...AN OLD FRONT SITUATED ACROSS FL
WILL RETREAT NWD LATE TODAY AND EARLY SUNDAY BEFORE RESUMING A SEWD
MOVEMENT INTO CNTRL FL BY LATE SUNDAY. A NEW FRONT...FOLLOWING THE
SECOND WAVE...WILL SETTLE SEWD INTO NEW ENGLAND AND THE OH VLY.
WHILE MOST OF THE COUNTRY WILL EXPERIENCE A DRY AND/OR STABLE
THERMODYNAMIC ENVIRONMENT LIMITING CONVECTIVE PROSPECTS...THE FRONT
ACROSS FL MAY BE IMPETUS FOR SPORADIC TSTMS.
..FL...
DEEP LAYER MOISTURE WILL INCREASE TONIGHT AND SUNDAY AS ELY
TROPOSPHERIC FLOW STRENGTHENS ALONG SRN PERIPHERY OF THE NERN
TROUGH. THUS...THE BOUNDARY LAYER WILL LIKELY BECOME MORE UNSTABLE
AND SUPPORT WWD MOVING CONVECTIVE CLUSTERS FROM THE SUB-TROPICAL
ATLANTIC ON SUNDAY. THOUGH THERMODYNAMIC PROFILES ARE APT TO BE
MOIST-ADIABATIC AT BEST...SPORADIC LIGHTNING STRIKES MAY
OCCUR...PRIMARILY VCNTY THE SEWD MOVING COLD FRONT AND ALONG THE
EAST COAST WHERE FRICTIONAL AFFECTS CONTRIBUTE TO LOCALIZED SPEED
CONVERGENCE/UVV.
.RACY.. 10/27/2007
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