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| #42441 (Received by flhurricane at: 2:20 AM 28.Aug.2005) TCDAT2 HURRICANE KATRINA SPECIAL DISCUSSION NUMBER 20 NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL 2 AM EDT SUN AUG 28 2005 THIS SPECIAL ADVISORY IS BEING ISSUED TO UPDATE THE INITIAL AND FORECAST INTENSITY OF HURRICANE KATRINA. AN AIR FORCE RECONNAISSANCE AIRCRAFT REPORTED 700 MB FLIGHT LEVEL WINDS OF 137 KT IN THE NORTHWESTERN EYEWALL... CORRESPONDING TO ABOUT 125 KT AT THE SURFACE. THE LATEST MINIMUM CENTRAL PRESSURE MEASURED BY THE AIRCRAFT WAS 935 MB. ALTHOUGH THE HURRICANE HAS REACHED 125 KT MORE QUICKLY THAN PREVIOUSLY EXPECTED...THE INTENSITY FORECAST UP UNTIL LANDFALL HAS ONLY BEEN NUDGED UPWARD TO 130 KT. IT IS POSSIBLE THAT KATRINA COULD GET STRONGER THAN FORECAST AND PERHAPS EVEN REACH CATEGORY FIVE STATUS SOMETIME DURING THE NEXT 36 HOURS. FORECASTER KNABB FORECAST POSITIONS AND MAX WINDS INITIAL 28/0600Z 25.1N 86.8W 125 KT 12HR VT 28/1200Z 25.5N 87.5W 125 KT 24HR VT 29/0000Z 27.0N 89.0W 130 KT 36HR VT 29/1200Z 29.0N 89.8W 130 KT 48HR VT 30/0000Z 31.0N 89.8W 90 KT...INLAND 72HR VT 31/0000Z 36.5N 87.0W 40 KT...INLAND 96HR VT 01/0000Z 41.0N 80.5W 30 KT...EXTRATROPICAL 120HR VT 02/0000Z 45.5N 71.5W 25 KT...EXTRATROPICAL |
