000 AXNT20 KNHC 101139 TWDAT TROPICAL WEATHER DISCUSSION NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 705 AM EST THU JAN 10 2008 TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHERN SECTIONS OF SOUTH AMERICA...AND THE ATLANTIC OCEAN TO THE AFRICAN COAST FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS... WEATHER OBSERVATIONS...AND RADAR. BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 1045 UTC ...THE ITCZ... ITCZ AXIS IS CENTERED ALONG 4N3W 5N14W 3N33W 2N43W S OF THE EQUATOR NEAR 50W. CLUSTERS OF SCATTERED MODERATE/ISOLATED STRONG CONVECTION ARE S OF 6N TO THE EQUATOR BETWEEN 18W-47W. ...DISCUSSION... GULF OF MEXICO... A DEEP LAYERED TROUGH IS MOVING INTO THE W ATLC REMAINING OVER THE FLORIDA PENINSULA WITH THE ACCOMPANYING FRONTAL BOUNDARY NOW INLAND OVER THE SE US. A STRONG DEEP LAYERED TROUGH IS MOVING TOWARD THE UPPER MISSISSIPPI VALLEY TO TEXAS BRINGING THE NEXT FRONT INTO THE GULF LATER TODAY. AN UPPER RIDGE AXIS IS BETWEEN THESE UPPER TROUGHS EXTENDING FROM THE E BAY OF CAMPECHE TO THE N GULF COAST NEAR THE ALABAMA/MISSISSIPPI BORDER. THE BROAD SURFACE RIDGE THAT EXTENDED FROM THE W ATLC IS NOW TO THE E COAST OF THE FLORIDA PENINSULA. LIGHT/MODERATE S TO SE WINDS ARE ACROSS THE GULF USHERING IN SOME ISOLATED LOW LEVEL SHOWERS. CARIBBEAN SEA... BROAD UPPER RIDGE CONTINUES TO DOMINATE THE CARIBBEAN ANCHORED OVER SOUTH AMERICA PRODUCING NEAR ZONAL WESTERLY FLOW ACROSS THE AREA. LIGHT/MODERATE NE TO E TRADE WINDS REMAIN ACROSS THE AREA. A BAND OF SCATTERED SHOWERS AND WIDELY ISOLATED THUNDERSTORMS EXTENDS FROM THE SW ATLC NEAR 20N62W ACROSS PUERTO RICO AND THE VIRGIN ISLANDS TO S OF HAITI NEAR 17N73W. AN AREA OF BROKEN/ OVERCAST LOW CLOUDS WITH ISOLATED SHOWERS REMAINS OVER THE WINDWARD ISLANDS S OF 16N E OF 65W. OTHERWISE THE AREA REMAINS RATHER TRANQUIL THIS MORNING. ATLANTIC OCEAN... DEEP LAYERED TROUGH EXTENDS FROM THE CANADIAN MARITIMES ALONG THE E COAST OF THE US TO THE E COAST OF FLORIDA WITH THE ACCOMPANYING FRONTAL BOUNDARY INLAND OVER THE US. THE BROAD UPPER RIDGE COVERING THE CARIBBEAN EXTENDS INTO THE SW ATLC S OF 24N W OF 65W WITH A BROAD UPPER LOW IN THE W/CENTRAL ATLC NEAR 26N56W COVERING THE AREA N OF 19N BETWEEN 50W-65W. A SURFACE TROUGH EXTENDS FROM 30N52W SW ALONG 24N57W TO 19N64W. UPPER LEVEL DIFFLUENCE ASSOCIATED WITH A WEAK RIDGE AXIS TO THE E OF THE UPPER LOW IS PRODUCING SCATTERED SHOWERS/ISOLATED THUNDERSTORMS WITHIN 300 NM E OF THE SURFACE TROUGH N OF 24N. A SECOND SURFACE TROUGH IS IN THE W TROPICAL ATLC FROM 18N57W TO 10N59W GIVING THE AREA BROKEN/OVERCAST LOW CLOUDS WITH ISOLATED SHOWERS S OF 16N E OF 55W ACROSS THE WINDWARD ISLANDS. WESTERLY ZONAL FLOW DOMINATES THE REMAINDER OF THE ATLC E OF 40W. HIGH PRESSURE REMAINS IN CONTROL OF THE ATLC ANCHORED N OF THE REGION WITH A WEAKNESS IN THE AREA OF THE SURFACE TROUGH. $$ WALLACE