Post by Nws Olney Maryland on Sept 2, 2011 10:24:40 GMT -5
BULLETIN
TROPICAL DEPRESSION THIRTEEN ADVISORY NUMBER 4
NWS NATIONAL HURRICANE CENTER MIAMI FL AL132011
1000 AM CDT FRI SEP 02 2011
...DEPRESSION NEARLY STATIONARY SOUTH OF THE LOUISIANA COAST...
RAINBANDS MOVING ACROSS MUCH OF SOUTHEASTERN LOUISIANA...
SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...27.3N 91.5W
ABOUT 190 MI...310 KM SW OF THE MOUTH OF THE MISSISSIPPI RIVER
ABOUT 230 MI...370 KM SE OF PORT ARTHUR TEXAS
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 2 MPH...4 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
NONE
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* PASCAGOULA MISSISSIPPI WESTWARD TO SABINE PASS TEXAS...INCLUDING
THE CITY OF NEW ORLEANS...LAKE PONTCHARTRAIN...AND LAKE MAUREPAS
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE
NEXT 24 HOURS.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA ...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY
YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 1000 AM CDT...1500 UTC...THE CENTER OF TROPICAL DEPRESSION
THIRTEEN WAS LOCATED NEAR LATITUDE 27.3 NORTH...LONGITUDE 91.5 WEST.
THE DEPRESSION IS DRIFTING TOWARD THE NORTHWEST NEAR 2 MPH...4 KM/H.
A CONTINUED SLOW AND POSSIBLY ERRATIC MOTION TOWARD THE NORTHWEST
OR NORTH IS EXPECTED TODAY AND SATURDAY. ON THE FORECAST TRACK...
THE CENTER OF THE CYCLONE IS EXPECTED TO APPROACH THE COAST OF
SOUTHERN LOUISIANA DURING THE WEEKEND.
MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH...55 KM/H...WITH HIGHER
GUSTS. GRADUAL STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS
AND THE DEPRESSION COULD BECOME A TROPICAL STORM LATER TODAY. WINDS
OF TROPICAL STORM FORCE ARE BEING REPORTED ON OIL RIGS NORTH AND
EAST OF THE CENTER AT ELEVATIONS OF A FEW HUNDRED FEET.
THE ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON REPORTS FROM NEARBY
OIL RIGS AND AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT IS 1005
MB...29.68 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. THESE RAINS ARE EXPECTED TO
CAUSE EXTENSIVE FLOODING.
STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 2
TO 4 FEET ABOVE GROUND LEVEL ALONG THE NORTHERN GULF COAST IN AREAS
OF ONSHORE FLOW.
WIND...TROPICAL STORM CONDITIONS ARE EXPECTED TO FIRST REACH THE
COAST WITHIN THE WARNING AREA THIS EVENING...MAKING OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS.
TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER PORTIONS OF
SOUTHERN LOUISIANA TONIGHT.
NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...100 PM CDT.
NEXT COMPLETE ADVISORY...400 PM CDT.
TROPICAL DEPRESSION THIRTEEN ADVISORY NUMBER 4
NWS NATIONAL HURRICANE CENTER MIAMI FL AL132011
1000 AM CDT FRI SEP 02 2011
...DEPRESSION NEARLY STATIONARY SOUTH OF THE LOUISIANA COAST...
RAINBANDS MOVING ACROSS MUCH OF SOUTHEASTERN LOUISIANA...
SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...27.3N 91.5W
ABOUT 190 MI...310 KM SW OF THE MOUTH OF THE MISSISSIPPI RIVER
ABOUT 230 MI...370 KM SE OF PORT ARTHUR TEXAS
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...NW OR 325 DEGREES AT 2 MPH...4 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
NONE
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* PASCAGOULA MISSISSIPPI WESTWARD TO SABINE PASS TEXAS...INCLUDING
THE CITY OF NEW ORLEANS...LAKE PONTCHARTRAIN...AND LAKE MAUREPAS
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE
NEXT 24 HOURS.
FOR STORM INFORMATION SPECIFIC TO YOUR AREA ...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY
YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE.
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
AT 1000 AM CDT...1500 UTC...THE CENTER OF TROPICAL DEPRESSION
THIRTEEN WAS LOCATED NEAR LATITUDE 27.3 NORTH...LONGITUDE 91.5 WEST.
THE DEPRESSION IS DRIFTING TOWARD THE NORTHWEST NEAR 2 MPH...4 KM/H.
A CONTINUED SLOW AND POSSIBLY ERRATIC MOTION TOWARD THE NORTHWEST
OR NORTH IS EXPECTED TODAY AND SATURDAY. ON THE FORECAST TRACK...
THE CENTER OF THE CYCLONE IS EXPECTED TO APPROACH THE COAST OF
SOUTHERN LOUISIANA DURING THE WEEKEND.
MAXIMUM SUSTAINED WINDS ARE NEAR 35 MPH...55 KM/H...WITH HIGHER
GUSTS. GRADUAL STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS
AND THE DEPRESSION COULD BECOME A TROPICAL STORM LATER TODAY. WINDS
OF TROPICAL STORM FORCE ARE BEING REPORTED ON OIL RIGS NORTH AND
EAST OF THE CENTER AT ELEVATIONS OF A FEW HUNDRED FEET.
THE ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON REPORTS FROM NEARBY
OIL RIGS AND AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT IS 1005
MB...29.68 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. THESE RAINS ARE EXPECTED TO
CAUSE EXTENSIVE FLOODING.
STORM SURGE...A STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 2
TO 4 FEET ABOVE GROUND LEVEL ALONG THE NORTHERN GULF COAST IN AREAS
OF ONSHORE FLOW.
WIND...TROPICAL STORM CONDITIONS ARE EXPECTED TO FIRST REACH THE
COAST WITHIN THE WARNING AREA THIS EVENING...MAKING OUTSIDE
PREPARATIONS DIFFICULT OR DANGEROUS.
TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER PORTIONS OF
SOUTHERN LOUISIANA TONIGHT.
NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORY...100 PM CDT.
NEXT COMPLETE ADVISORY...400 PM CDT.