000 WTNT33 KNHC 231138 TCPAT3 BULLETIN TROPICAL STORM BONNIE INTERMEDIATE ADVISORY NUMBER 4A NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL AL032010 800 AM EDT FRI JUL 23 2010 ...BONNIE NEARING SOUTH FLORIDA...HEAVY SQUALLS APPROACHING... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...24.7N 79.8W ABOUT 80 MI...130 KM SSE OF MIAMI FLORIDA ABOUT 75 MI...120 KM E OF MARATHON FLORIDA MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/HR PRESENT MOVEMENT...WNW OR 295 DEGREES AT 19 MPH...31 KM/HR MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY... NONE SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * THE NORTHWESTERN BAHAMAS * THE FLORIDA EAST COAST FROM DEERFIELD BEACH SOUTHWARD INCLUDING THE ENTIRE FLORIDA KEYS AND FLORIDA BAY...AND ALONG THE WEST COAST OF FLORIDA NORTHWARD TO ENGLEWOOD A TROPICAL STORM WATCH IS IN EFFECT FOR... * THE EAST COAST OF FLORIDA NORTH OF DEERFIELD BEACH TO JUPITER INLET AND LAKE OKEECHOBEE * THE NORTHERN GULF COAST FROM DESTIN FLORIDA TO MORGAN CITY LOUISIANA INTERESTS ELSEWHERE ALONG THE NORTHERN GULF COAST SHOULD MONITOR THE PROGRESS OF BONNIE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA IN THE UNITED STATES...INCLUDING POSSIBLE INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED BY YOUR LOCAL NATIONAL WEATHER SERVICE FORECAST OFFICE. FOR STORM INFORMATION SPECIFIC TO YOUR AREA OUTSIDE UNITED STATES...PLEASE MONITOR PRODUCTS ISSUED BY YOUR NATIONAL METEOROLOGICAL SERVICE. DISCUSSION AND 48-HOUR OUTLOOK ------------------------------ AT 800 AM EDT...1200 UTC...THE CENTER OF TROPICAL STORM BONNIE WAS LOCATED NEAR LATITUDE 24.7 NORTH...LONGITUDE 79.8 WEST. BONNIE IS MOVING RAPIDLY TOWARD THE WEST-NORTHWEST NEAR 19 MPH...31 KM/HR. THIS MOTION IS EXPECTED TO CONTINUE DURING THE NEXT DAY OR SO. ON THE FORECAST TRACK...BONNIE IS EXPECTED TO MOVE OVER THE SOUTHERN FLORIDA PENINSULA LATER TODAY...AND MOVE OVER THE EASTERN GULF OF MEXICO TONIGHT AND SATURDAY. BONNIE IS FORECAST TO APPROACH THE NORTHERN GULF COAST LATE SATURDAY OR EARLY SUNDAY. MAXIMUM SUSTAINED WINDS REMAIN NEAR 40 MPH...65 KM/HR...WITH HIGHER GUSTS...IN A SMALL AREA NORTH AND EAST OF THE CENTER. NO SIGNIFICANT CHANGE IN STRENGTH IS EXPECTED BEFORE BONNIE MOVES OVER SOUTH FLORIDA. HOWEVER...SOME SLIGHT STRENGTHENING IS POSSIBLE WHEN THE CYCLONE MOVES OVER THE GULF OF MEXICO ON SATURDAY. TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 85 MILES...140 KM MAINLY TO THE NORTH AND EAST OF THE CENTER.. LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE PLANE WAS 1008 MB...29.77 INCHES. HAZARDS AFFECTING LAND ---------------------- WIND...TROPICAL STORM CONDITIONS WILL CONTINUE OVER PORTIONS OF THE NORTHWESTERN BAHAMAS THIS MORNING BUT SHOULD GRADUALLY DIMINISH TODAY. TROPICAL STORM FORCE WINDS MAINLY IN SQUALLS ARE EXPECTED TO SPREAD OVER SOUTHERN FLORIDA AND PORTIONS OF THE KEYS IN THE WARNING AREA LATER TODAY. RAINFALL...BONNIE IS EXPECTED TO PRODUCE TOTAL RAIN ACCUMULATIONS OF 1 TO 3 INCHES OVER SOUTH FLORIDA...WITH POSSIBLE ISOLATED MAXIMUM AMOUNTS OF 5 INCHES. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE OVER THE NORTHWESTERN BAHAMAS. STORM SURGE...STORM SURGE WILL RAISE WATER LEVELS BY AS MUCH AS 1 TO 2 FEET ABOVE GROUND LEVEL OVER PORTIONS OF THE NORTHWESTERN BAHAMAS...THE FLORIDA KEYS...AND THE SOUTHERN FLORIDA PENINSULA. TORNADOES...ISOLATED TORNADOES ARE POSSIBLE OVER EXTREME SOUTHERN FLORIDA LATER TODAY. NEXT ADVISORY ------------- NEXT COMPLETE ADVISORY...1100 AM EDT. $$ FORECASTER AVILA/ROBERTS