AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
1130 AM EST WED DEC 22 2004
.UPDATE...COLD AIR CONTINUES TO POUR SOUTHEAST INTO THE LOWER
MISSISSIPPI VALLEY IN ADVANCE OF DEVELOPING LOW CETNER ALONG THE
TEXAS COAST. LATEST MSAS SHOWS A MAJOR BATTLE BETWEEN THE ARCTIC
AIR MASS DROPPING SOUTH ACROSS NORTHERN MISSISSIPPI AND LOUISIANA
AND THE DEVELOPING TEXAS COAST LOW. AM GETTING THE IMPRESSION THAT
THE ARCTIC AIR MASS IS WINNING AND THE LOW MAY TRACK FURTHER SOUTH
AND EAST THAN EARLIER MODELS INDICATED. THE LOW IS ALSO DEVELOPING
ABOUT 3 HOURS FASTER THAN THE PREVIOUS MODEL RUNS. ALSO LASTEST RUC
AND ETA20 PRESSURES NOW INDICATING A MORE SOUTHERLY AND EASTERLY
TRACK. REGARDLESS THIS IS SHAPING UP TO BE A MAJOR SNOW EVENT FOR
FOLKS TO THE NORTH OF US. LOCALLY...PRE FRONTAL RAIN SHOULD SPEED
THROUGH THE SE ALABAMA AND FLORIDA PANHANDLE BETWEEN 2AM AND 5AM
TONIGHT WITH 1/2 TO ONE INCH AMOUNTS OF RAINFALL AND THROUGH THE
FLORIDA BIG BEND TOMORROW MORNING AFTER SUNUP. LATEST MODEL RUN
SHOWS MUCH OF THE ACTIVITY DIVING INTO THE GULF OF MEXICO BY THE
TIME THE FRONT ARRIVES IN THE BIG BEND. WIND SHIFT EXPECTED LATER
TOMORROW AS THE ARCTIC AIR ARRIVES LATE MORNING WESTERN PORTIONS AND
AFTERNOON EASTERN PORTIONS.
From Tallahassee NWS... URGENT
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