Thursday, September 1, 2011

Tropical Depression 13

In an earlier post, Morning Meteorologist Candice King talked about some activity in the Gulf of Mexico. This has now organized into a tropical depression and could become Tropical Storm Lee late tonight or early tomorrow. Here's more on this potential flood-producer that has tropical storm warnings hoisted along the Gulf Coast from Mississippi to east Texas:

DISCUSSION AND 48-HOUR OUTLOOK
AT 700 PM CDT...0000 UTC...THE CENTER OF TROPICAL DEPRESSION
THIRTEEN WAS LOCATED NEAR LATITUDE 26.6 NORTH...LONGITUDE 91.4 WEST. THE DEPRESSION IS MOVING TOWARD THE NORTHWEST NEAR 6 MPH...9 KM/H. A SLOW NORTHWESTWARD MOTION IS FORECAST THROUGH FRIDAY...FOLLOWED BY A TURN TOWARD THE NORTH FRIDAY NIGHT OR SATURDAY. ON THIS TRACK...THE CENTER OF THE CYCLONE IS EXPECTED TO APPROACH THE COAST OF SOUTHERN LOUISIANA ON SATURDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH...55 KM/H...WITH HIGHER
GUSTS. SOME STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS AND THE DEPRESSION COULD BECOME A TROPICAL STORM ON FRIDAY.
THE ESTIMATED MINIMUM CENTRAL PRESSURE FROM A NOAA RECONNAISSANCE AIRCRAFT WAS 1007 MB...29.74 INCHES.

HAZARDS AFFECTING LAND

RAINFALL...THE DEPRESSION IS EXPECTED TO PRODUCE TOTAL RAIN
ACCUMULATIONS OF 10 TO 15 INCHES OVER SOUTHERN LOUISIANA...SOUTHERN MISSISSIPPI...AND SOUTHERN ALABAMA THROUGH SUNDAY...WITH POSSIBLE ISOLATED MAXIMUM AMOUNTS OF 20 INCHES.

STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 1 TO 3 FEET ABOVE GROUND LEVEL ALONG THE NORTHERN GULF COAST IN AREAS OF ONSHORE FLOW.



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