THE INITIAL MOTION IS 295/17...JUST A LITTLE RIGHT OF 6 HR AGO.
THERE HAVE BEEN SOME CHANGES IN THE TRACK MODEL GUIDANCE...LIKELY
DUE TO BETTER MODEL ANALYSES OF THE MID-LA UDE TROUGH OVER THE
NORTHWESTERN UNITED STATES AND ITS SUBSEQUENT IMPACT ON THE
SOUTHERN U.S. RIDGE. LARGE-SCALE MODELS ARE NOW CALLING FOR MORE
OF A WEAKNESS IN THE RIDGE OVER THE WESTERN GULF COAST. THIS
CAUSES THE TRACK GUIDANCE TO FORECAST LESS OF A WESTWARD TURN WHILE
EMILY IS OVER THE GULF OF MEXICO...WHICH CAUSES THE MODELS TO
FORECAST LANDFALL FARTHER TO THE NORTH OVER NORTHEASTERN MEXICO.
THE OFFICIAL FORECAST TRACK IS MOVED A LITTLE NORTHWARD IN RESPONSE
TO THE GUIDANCE SHIFT AND IS NOW IN THE MIDDLE OF THE GUIDANCE
ENVELOPE INSTEAD OF THE NORTHERN EDGE. THIS CHANGE IN THE FORECAST
TRACK INCREASES THE THREAT TO SOUTHERN TEXAS.
GIVEN THE COOLING TOPS AND THE IMPROVEMENT IN THE OVERALL CLOUD
PATTERN...A BURST OF INTENSIFICATION PRIOR TO LANDFALL CANNOT BE
RULED OUT. HOWEVER...IF AN OUTER EYEWALL IS FORMING THIS BECOMES
LESS LIKELY. EMILY SHOULD WEAKEN AFTER LANDFALL...THEN
RE-INTENSIFY OVER THE GULF OF MEXICO. HOW MUCH EMILY COULD
INTENSIFY OVER THE GULF WILL DEPEND ON JUST WHAT STRUCTURE EMERGES
FROM YUCATAN...SO THERE IS A LARGER THAN NORMAL POSSIBLE ERROR ON
THE 24-48 HR INTENSITY FORECASTS. NEVERTHELESS...EMILY IS EXPECTED
TO MAKE LANDFALL ON THE NORTH AMERICAN MAINLAND AS A MAJOR
HURRICANE.