SEE THE BHMNPWMOB PRODUCT FOR DETAILS RELATED TO THE INLAND AREAS. A TORNADO AND FLASH FLOOD WATCH IS IN EFFECT FOR ALL OF SOUTHEAST MISSISSIPPI...SOUTHWEST ALABAMA AND NORTHWEST FLORIDA. ...STORM INFORMATION... AT 500 AM CDT...MOBILE RADAR ESTIMATED THE CENTER OF HURRICANE KATRINA TO BE ABOUT 125 MILES SOUTHWEST OF THE MOUTH OF MOBILE BAY... AND MOVING NORTH NEAR 15 MPH...AND THIS MOTION IS FORECAST TO CONTINUE THROUGH THIS AFTERNOON. A GRADUAL TURN TOWARD THE NORTH- NORTHEAST AT A SLIGHTLY FASTER FORWARD SPEED IS EXPECTED LATER TONIGHT AND ON TUESDAY. ON THE FORECAST TRACK...KATRINA WILL MOVE ONSHORE THE SOUTHEASTERN LOUISIANA COAST JUST EAST OF GRAND ISLE THIS MORNING...AND REACH THE LOUISIANA-MISSISSIPPI BORDER AREA THIS AFTERNOON. CONDITIONS WILL CONTINUE TO STEADILY DETERIORATE OVER CENTRAL AND SOUTHEASTERN LOUISIANA...SOUTHERN MISSISSIPPI...AND SOUTHERN ALABAMA THROUGHOUT THE DAY. THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 915 MB...27.02 INCHES. MAXIMUM SUSTAINED WINDS ARE NEAR 150 MPH...240 KM/HR...WITH HIGHER GUSTS. KATRINA IS A STRONG CATEGORY FOUR HURRICANE ON THE SAFFIR- SIMPSON SCALE. ...PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE COMPLETED. ...STORM SURGE FLOOD AND STORM TIDE IMPACTS... KATRINA HAS BEGUN TO MAKE LANDFALL ALONG THE EXTREME SOUTHEAST LOUISIANA COAST NEAR THE MOUTH OF THE MISSISSIPPI RIVER. A SIGNIFICANT AND LIFE THREATENING STORM SURGE IS EXPECTED TO BE FELT WELL EAST OF THE STORM CENTER ALONG THE MISSISSIPPI AND ALABAMA COASTLINES. BASED ON THE LATEST FORECAST TRACK AND SPEED...A STRONG CATEGORY FOUR LAND-FALLING HURRICANE WOULD BRING TIDE LEVELS AS HIGH AS 10 TO 15 FEET ALONG COASTAL MOBILE COUNTY AND THE WESTERN PORTIONS OF MOBILE BAY. TIDE LEVELS OF THIS MAGNITUDE WOULD SEVERALLY AFFECT DOWNTOWN MOBILE WITH WATER SPILLING INTO THE DOWNTOWN AREA AND EXTENDING AS FAR WEST AS BROAD STREET. IN ADDITION...DAUPHIN ISLAND WOULD LIKELY BE INUNDATED...EXCEPT FOR HIGHER GROUND ON THE EAST END. A STORM TIDE OF 10 TO 12 FEET IS EXPECTED ALONG COASTAL BALDWIN COUNTY...COMPARABLE TO HURRICANE IVAN OF LAST YEAR. SIGNIFICANT INUNDATION IS LIKELY ALONG THE BEACHES OF GULF SHORES AND ORANGE BEACH. PARTS OF THE FORT MORGAN PENINSULA WILL LIKELY BE INUNDATED AS WELL. TIDE LEVELS ALONG THE NORTHWEST FLORIDA COAST WILL RANGE FROM NEAR 8 FEET IN THE PENSACOLA AREA TO AROUND 5 FEET IN THE DESTIN AREA. ...WIND IMPACTS... TROPICAL STORM FORCE WINDS...40 T0 50 MPH WITH GUST TO NEAR 75 MPH...WILL CONTINUE TO SPREAD INLAND ACROSS MISSISSIPPI AND THE ALABAMA AND FLORIDA COASTAL AREAS THROUGHOUT THE MORNING. HURRICANE FORCE WINDS...75 MPH OR GREATER...ARE LIKELY ALONG THE MISSISSIPPI AND ALABAMA COASTS BY MID MORNING...THEN SPREADING FURTHER INLAND ACROSS SOUTHEAST MISSISSIPPI...WITH OCCASIONAL GUSTS TO NEAR HURRICANE STRENGTH OVER EXTREME SOUTHWEST ALABAMA THROUGH THIS AFTERNOON. WINDS ARE EXPECTED TO DIMINISH BELOW TROPICAL STORM STRENGTH ACROSS THE ENTIRE AREA DURING THE MID TO LATE EVENING HOURS TODAY. ...RIP CURRENTS... EXTREMELY DANGEROUS RIP CURRENTS ARE OCCURRING. SWIMMERS SHOULD NOT ENTER THE WATER UNDER ANY CIRCUMSTANCES. ...RAINFALL... SQUALLS ASSOCIATED WITH HURRICANE KATRINA WILL LIKELY CONTINUE THROUGH TONIGHT WITH WIDESPREAD AMOUNTS OF 5 TO 10 INCHES EXPECTED... WITH ISOLATED HIGHER AMOUNTS NEAR 15 INCHES POSSIBLE. THE HIGHER RAINFALL AMOUNTS WILL LIKELY BE FELT OVER PORTIONS OF SOUTHEAST MISSISSIPPI AND EXTREME SOUTHWEST ALABAMA...OR THOSE AREAS CLOSER TO THE CENTER OF THE STORM AS IT PUSHES INLAND. ...NEXT UPDATE... THE NEXT HURRICANE LOCAL STATEMENT WILL BE ISSUED FROM THIS OFFICE AROUND 700 AM CDT. $$ PURDY