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#307316 (Received by flhurricane at: 3:40 AM 10.Nov.2009) TCPAT1 BULLETIN TROPICAL STORM IDA ADVISORY NUMBER 26 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL112009 300 AM CST TUE NOV 10 2009 ...IDA MOVING SLOWLY NORTHWARD TOWARD THE GULF COAST AS IT WEAKENS A LITTLE MORE... A TROPICAL STORM WARNING REMAINS IN EFFECT FROM GRAND ISLE LOUISIANA EASTWARD TO THE AUCILLA RIVER FLORIDA...INCLUDING NEW ORLEANS AND LAKE PONTCHARTRAIN. 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. AT 300 AM CST...0900 UTC...THE CENTER OF TROPICAL STORM IDA WAS LOCATED NEAR LATITUDE 29.9 NORTH...LONGITUDE 88.5 WEST OR ABOUT 60 MILES...95 KM...SOUTH-SOUTHWEST OF MOBILE ALABAMA. IDA IS MOVING TOWARD THE NORTH NEAR 9 MPH...15 KM/HR. A TURN TOWARD THE NORTH-NORTHEAST WITH A DECREASE IN FORWARD SPEED IS EXPECTED TODAY. ON THE FORECAST TRACK...THE CENTER OF IDA SHOULD REACH THE NORTHERN GULF COAST LATER THIS MORNING. AFTER LANDFALL...IDA IS EXPECTED TO TURN EASTWARD. DATA FROM AN AIR FORCE RESERVE HURRICANE HUNTER AIRCRAFT AND SURFACE OBSERVATIONS INDICATE THAT MAXIMUM SUSTAINED WINDS HAVE DECREASED TO NEAR 50 MPH...85 KM/HR...WITH HIGHER GUSTS. SOME ADDITIONAL WEAKENING IS EXPECTED TODAY...AND IDA IS EXPECTED TO MERGE WITH A FRONTAL ZONE ON WEDNESDAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM FROM THE CENTER. THE LATEST MINIMUM MINIMUM CENTRAL PRESSURE REPORTED THE HURRICANE HUNTER AIRCRAFT WAS 999 MB...29.50 INCHES. IDA IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 3 TO 6 INCHES...WITH ISOLATED MAXIMUM STORM TOTALS OF 8 INCHES...THROUGH WEDNESDAY EVENING FROM THE CENTRAL AND EASTERN GULF COAST ACROSS THE SOUTHEASTERN UNITED STATES INTO THE SOUTHERN MID-ATLANTIC STATES. A DANGEROUS STORM TIDE WILL RAISE WATER LEVELS BY AS MUCH AS 3 TO 5 FEET ABOVE GROUND LEVEL ALONG THE COAST NEAR AND TO THE EAST OF WHERE THE CENTER MAKES LANDFALL...AS WELL AS IN AREAS OF ONSHORE FLOW IN SOUTHEASTERN LOUISIANA. NEAR THE COAST...THE SURGE WILL BE ACCOMPANIED BY LARGE AND DESTRUCTIVE WAVES. ...SUMMARY OF 300 AM CST INFORMATION... LOCATION...29.9N 88.5W MAXIMUM SUSTAINED WINDS...50 MPH PRESENT MOVEMENT...NORTH OR 5 DEGREES AT 9 MPH MINIMUM CENTRAL PRESSURE...999 MB AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE CENTER AT 600 AM CST FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 900 AM CST. $$ FORECASTER BRENNAN/KIMBERLAIN |