313 
 WTPA41 PHFO 210902
 TCDCP1
 
 TROPICAL STORM OMEKA DISCUSSION NUMBER   5
 NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   CP012010
 1100 PM HST MON DEC 20 2010
 
 THE LOW-LEVEL CIRCULATION CENTER OF OMEKA HAS BECOME COMPLETELY 
 DEVOID OF DEEP CONVECTION THIS EVENING...WITH THE NEAREST 
 THUNDERSTORMS LOCATED ALMOST 50 NM NORTHEAST OF THE EXPOSED CENTER. 
 THE LATEST UW/CIMSS ESTIMATE INDICATES WESTERLY VERTICAL WIND SHEAR 
 IN THE VICINITY OF OMEKA IS NEAR 28 KT. LATEST DVORAK INTENSITY 
 ESTIMATES PROVIDED BY THE FIX AGENCIES WERE 2.0 FROM SAB...WHILE HFO 
 AND JTWC INDICATED THE INTENSITY WAS 2.5. THEREFORE...HAVE KEPT THE 
 INITIAL INTENSITY AS 35 KT AT 0600Z. HOWEVER...FOR THIS ADVISORY 
 PACKAGE...WHICH IS SENT OUT AT 0900Z...WE HAVE TRANSITIONED OMEKA TO 
 AN EXTRATROPICAL GALE LOW. 
 
 THE CURRENT FORECAST TRACK IS CLOSE TO THE PREVIOUS ONE THROUGH 24 
 HOURS...WITH A TURN TOWARD THE EAST NORTHEAST...FOLLOWING THE 
 CONSENSUS OF THE MODEL FORECASTS AT 36 HOURS. EVEN THOUGH OMEKA MAY 
 BE UNDERGOING SOME WEAKENING...HAVE DECIDED TO KEEP IT AS A GALE LOW 
 THROUGH 24 HOURS FOR THE HIGH SEAS FORECASTS...SINCE THE SYSTEM WILL 
 SOON BE OF CONCERN MAINLY TO MARINE INTERESTS ONCE IT DEPARTS THE 
 NORTHWEST HAWAIIAN ISLANDS. THE 36 HOUR FORECAST ASSUMES THE SYSTEM 
 WILL WEAKEN OR BE ABSORBED BY ANOTHER EXTRATROPICAL SYSTEM ONCE IT 
 HAS MOVED FURTHER NORTH OVER COLDER WATERS.
  
 BASED ON THE INITIAL POSITION AT 0900Z...THE CENTER OF OMEKA IS JUST 
 EAST OF LISIANSKI ISLAND IN THE NORTHWEST HAWAIIAN ISLANDS...FAR 
 WEST OF THE MAIN HAWAIIAN ISLANDS. SINCE MOST OF THE STRONG...GUSTY 
 WINDS AND ADVERSE WEATHER APPEAR TO BE EAST OF THE CENTER...THE 
 CONDITIONS AT LISIANSKI ISLAND APPEAR TO BE SOMEWHAT LESS 
 THREATENING. ANY PERSONS ON ISLANDS AND ATOLLS EAST OF LISIANSKI 
 ISLAND MAY BE EXPERIENCING GALE FORCE WINDS WITH INTERMITTENT HEAVY 
 RAINFALL. THESE ADVERSE WEATHER CONDITIONS IN THE NORTHWEST HAWAIIAN 
 ISLANDS SHOULD BEGIN TO GRADUALLY IMPROVE DURING THE DAY ON TUESDAY.
 
 THIS IS THE LAST ADVISORY ISSUED BY THE CENTRAL PACIFIC HURRICANE
 CENTER ON OMEKA. FUTURE INFORMATION ON THIS SYSTEM CAN BE FOUND IN
 HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE IN
 HONOLULU...HAWAII UNDER AWIPS HEADER HSFNP AND WMO HEADER FZPN40
 PHFO.
  
 FORECAST POSITIONS AND MAX WINDS
  
 INITIAL      21/0900Z 26.2N 173.4W    35 KT...POST-TROP/EXTRATROP
  12HR VT     21/1800Z 28.5N 172.6W    35 KT...POST-TROP/EXTRATROP
  24HR VT     22/0600Z 31.8N 171.8W    35 KT...POST-TROP/EXTRATROP
  36HR VT     22/1800Z 34.1N 169.0W    30 KT...POST-TROP/EXTRATROP
  
 $$
 FORECASTER HOUSTON