000 WTNT33 KNHC 021731 TCPAT3 BULLETIN TROPICAL STORM LEE INTERMEDIATE ADVISORY NUMBER 4A NWS NATIONAL HURRICANE CENTER MIAMI FL AL132011 100 PM CDT FRI SEP 02 2011 ...DEPRESSION STRENGTHENS INTO TROPICAL STORM LEE SOUTH OF THE LOUISIANA COAST...HEAVY RAINBANDS CONTINUE TO SPREAD ACROSS MUCH OF SOUTHEASTERN AND SOUTH-CENTRAL LOUISIANA... SUMMARY OF 100 PM CDT...1800 UTC...INFORMATION ---------------------------------------------- LOCATION...27.4N 91.5W ABOUT 200 MI...320 KM SE OF CAMERON LOUISIANA ABOUT 210 MI...340 KM SW OF THE MOUTH OF THE MISSISSIPPI RIVER MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NW OR 325 DEGREES AT 2 MPH...4 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 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 100 PM CDT...1800 UTC...THE CENTER OF TROPICAL STORM LEE WAS LOCATED BY AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT AND OBSERVATIONS FROM OIL RIGS TO BE NEAR LATITUDE 27.4 NORTH... LONGITUDE 91.5 WEST. LEE 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 TROPICAL STORM IS EXPECTED TO APPROACH THE COAST OF SOUTHERN LOUISIANA DURING THE WEEKEND. MAXIMUM SUSTAINED WINDS HAVE INCREASED TO NEAR 40 MPH...65 KM/H... WITH HIGHER GUSTS. GRADUAL STRENGTHENING IS FORECAST DURING THE NEXT 48 HOURS. WIND GUSTS TO NEAR 60 MPH ARE BEING REPORTED ON OIL RIGS NORTH AND EAST OF THE CENTER AT ELEVATIONS OF A FEW HUNDRED FEET ABOVE THE OCEAN SURFACE. TROPICAL-STORM-FORCE WINDS EXTEND OUTWARD UP TO 200 MILES...325 KM...MAINLY NORTHEAST THROUGH SOUTHEAST OF THE CENTER. THE ESTIMATED MINIMUM CENTRAL PRESSURE BASED ON REPORTS FROM NEARBY OIL RIGS AND AN AIR FORCE RESERVE RECONNAISSANCE AIRCRAFT IS 1003 MB...29.62 INCHES. HAZARDS AFFECTING LAND ---------------------- RAINFALL...TROPICAL STORM LEE 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...ESPECIALLY IN URBAN AREAS. 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 BY LATE AFTERNOON OR EVENING...MAKING OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER PORTIONS OF SOUTHERN LOUISIANA TONIGHT. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...400 PM CDT. $$ FORECASTER STEWART