HURRICANE RITA DISCUSSION NUMBER 17
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
5 PM EDT WED SEP 21 2005
AND YET ANOTHER CATEGORY FIVE HURRICANE THIS SEASON. DATA FROM BOTH
NOAA AND AIR FORCE HURRICANE HUNTERS INDICATE A SIGNIFICANT
PRESSURE DROP TODAY AND WINDS HAVE INCREASED TO 145 KNOTS. THIS IS
BASED ON A 700 MB WIND OF 161 KNOTS RECENTLY MEASURED BY AN AIR
FORCE PLANE AND A RECALIBRATED SFMR SURFACE WIND OF 146 KNOTS.
SATELLITE INTENSITY ESTIMATES WERE UNANIMOUSLY 140 KNOTS FROM ALL
AGENCIES. BECAUSE RITA WILL BE CROSSING AN AREA OF HIGH HEAT
CONTENT DURING THE NEXT 12 TO 24 HOURS...IT IS EXPECTED THAT THE
HURRICANE WILL MAINTAIN ITS STRENGTH. THEREAFTER...THE OCEAN HEAT
CONTENT IS NOT AS HIGH AND THE INTENSITY CHANGES WILL BE CONTROLLED
MAINLY BY EYEWALL REPLACEMENT CYCLES AND DECREASING HEAT CONTENT.
SOME WEAKENING IS ANTICIPATED BUT RITA IS FORECAST TO MAKE LANDFALL
AS A MAJOR HURRICANE...AT LEAST CATEGORY THREE.
THERE HAS BEEN NO CHANGE IN THE STEERING PATTERN AND RITA IS MOVING
WESTWARD OR 275 DEGREES AT 11 KNOTS. THE HIGH PRESSURE SYSTEM THAT
HAS BEEN FORCING RITA WESTWARD IS FORECAST TO WEAKEN AND SHIFT
EASTWARD. THIS WILL ALLOW THE HURRICANE TO TURN GRADUALLY TOWARD
THE WEST-NORTHWEST AND NORTHWEST DURING THE NEXT DAY OR TWO. THE
CORE OF RITA IS BASICALLY MOVING TOWARD THE TEXAS COAST AND THIS IS
CONSISTENT WITH THE TRACK MODEL CONSENSUS.
THE WIND FIELD ASSOCIATED WITH THE HURRICANE HAS BEGUN TO EXPAND
AND TROPICAL STORM FORCE WINDS ALREADY EXTEND ABOUT 150 N MI IN THE
NORTHERN SEMICIRCLE. BECAUSE ADDITIONAL EXPANSION OF THE WIND
FIELD IS ANTICIPATED...A HURRICANE WATCH AND A TROPICAL STORM WATCH
HAVE BEEN ISSUED FOR THE NORTHWEST GULF COAST.
FORECASTER AVILA
Hurricane Rita Position
http://tinyurl.com/7ju9l
Hurricane Rita Projected Path
http://tinyurl.com/c4fym
Hurricane Rita Strike Probabilities (Scroll Down)
http://tinyurl.com/8hqt6
Hurricane Rita Satellite Imagery (Patience Required)
http://tinyurl.com/6fmsy
The above links will update automatically, so if someone wants to include them in their future posts, they will be valid for that time.
Category Five Hurricane:
Winds greater than 155 mph (135 kt or 249 km/hr). Storm surge generally greater than 18 ft above normal. Complete roof failure on many residences and industrial buildings. Some complete building failures with small utility buildings blown over or away. All shrubs, trees, and signs blown down. Complete destruction of mobile homes. Severe and extensive window and door damage. Low-lying escape routes are cut by rising water 3-5 hours before arrival of the center of the hurricane. Major damage to lower floors of all structures located less than 15 ft above sea level and within 500 yards of the shoreline. Massive evacuation of residential areas on low ground within 5-10 miles (8-16 km) of the shoreline may be required. Only 3 Category Five Hurricanes have made landfall in the United States since records began: The Labor Day Hurricane of 1935, Hurricane Camille (1969), and Hurricane Andrew in August, 1992. The 1935 Labor Day Hurricane struck the Florida Keys with a minimum pressure of 892 mb--the lowest pressure ever observed in the United States. Hurricane Camille struck the Mississippi Gulf Coast causing a 25-foot storm surge, which inundated Pass Christian. Hurricane Andrew of 1992 made landfall over southern Miami-Dade County, Florida causing 26.5 billion dollars in losses--the costliest hurricane on record. In addition, Hurricane Gilbert of 1988 was a Category Five hurricane at peak intensity and is the strongest Atlantic tropical cyclone on record with a minimum pressure of 888 mb.