Post-Tropical Cyclone Issac

Location: 32.7°N 92.6°W
Max Winds: 35 mph
Movement: NNW at 12 mph
Pressure: 995mb

Computer Models Satellite NOAA NHC Track

Post-Tropical Cyclone Issac Computer Models

Post-Tropical Cyclone Issac Satellite Image

Post-Tropical Cyclone Issac Summary

SURFACE OBSERVATIONS AND NOAA DOPPLER WEATHER RADARS INDICATE THAT ISAAC IS MOVING NORTH-NORTHWESTWARD AT 340/11 KT. ISAAC WILL GRADUALLY TURN TO THE NORTH OVER THE NEXT 24-36 HOURS...AND MOVE ACROSS ARKANSAS AND INTO MISSOURI. BY DAY 3...THE REMNANTS OF ISAAC SHOULD TURN NORTHEASTWARD AND THEN EASTWARD AS THE SYSTEM MOVES INTO WEAK MID-LATITUDE WESTERLY FLOW. THE OFFICIAL TRACK FORECAST IS VERY CLOSE TO THE PREVIOUS ONE...AND LIES JUST TO THE RIGHT OF THE CONSENSUS MODELS TCVA AND TV15. THE INITIAL INTENSITY HAS BEEN DECREASED TO 30 KT...BASED ON SURFACE OBSERVATIONS AND DOPPLER RADAR VELOCITY DATA. ISAAC WILL CONTINUE TO WEAKEN OVER LAND AND IT IS EXPECTED TO BECOME A POST-TROPICAL REMNANT LOW BY SATURDAY...IF NOT SOONER. THE OFFICIAL INTENSITY FORECAST IS SIMILAR TO THE PREVIOUS ONE...AND CLOSELY FOLLOWS THE DECAY-SHIPS STATISTICAL-DYNAMICAL INTENSITY MODEL. HEAVY RAINFALL AND A SIGNIFICANT FLOOD THREAT WILL CONTINUE TO SPREAD INLAND ACROSS PORTIONS OF THE CENTRAL UNITED STATES DURING THE NEXT SEVERAL DAYS. WATER LEVELS ALONG THE NORTHERN GULF COAST WILL REMAIN ELEVATED THROUGH THIS EVENING...AND THEN GRADUALLY SUBSIDE ON FRIDAY. THE THREAT FOR TORNADOES WITH THIS SYSTEM WILL CONTINUE THROUGH TONIGHT. THIS IS THE LAST ADVISORY ON ISAAC ISSUED BY THE NATIONAL HURRICANE CENTER. FUTURE INFORMATION ON THIS SYSTEM CAN BE FOUND IN PUBLIC ADVISORIES ISSUED BY THE HYDROMETEOROLOGICAL PREDICTION CENTER... UNDER AWIPS HEADER TCPAT4 AND WMO HEADER WTNT34 KWNH...BEGINNING AT 10 PM CDT.