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 373 
 WTNT21 KNHC 111450
 TCMAT1
  
 TROPICAL STORM IRMA FORECAST/ADVISORY NUMBER  50
 NWS NATIONAL HURRICANE CENTER MIAMI FL       AL112017
 1500 UTC MON SEP 11 2017
  
 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
  
 THE STORM SURGE WARNING HAS BEEN DISCONTINUED FROM BONITA BEACH
 SOUTHWARD.
  
 THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED FOR LAKE
 OKEECHOBEE.
  
 THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED FROM THE
 VOLUSIA/BREVARD COUNTY LINE SOUTHWARD.
  
 THE TROPICAL STORM WARNING HAS BEEN DISCONTINUED SOUTH OF ANCLOTE
 RIVER.
  
 SUMMARY OF WATCHES AND WARNINGS IN EFFECT... 
  
 A STORM SURGE WARNING IS IN EFFECT FOR...
 * SOUTH SANTEE RIVER SOUTHWARD TO THE FLAGLER/VOLUSIA COUNTY LINE
 * NORTH OF BONITA BEACH TO THE OCHLOCKONEE RIVER
 * TAMPA BAY
  
 A TROPICAL STORM WARNING IS IN EFFECT FOR...
 * ANCLOTE RIVER TO THE OKALOOSA/WALTON COUNTY LINE
 * NORTH OF THE VOLUSIA/BREVARD COUNTY LINE TO THE SOUTH SANTEE
 RIVER
  
 A STORM SURGE WARNING MEANS THERE IS A DANGER OF LIFE-THREATENING
 INUNDATION... FROM RISING WATER MOVING INLAND FROM THE COASTLINE... 
 DURING THE NEXT 36 HOURS IN THE INDICATED LOCATIONS. FOR A
 DEPICTION OF AREAS AT RISK... PLEASE SEE THE NATIONAL WEATHER
 SERVICE STORM SURGE WATCH/WARNING GRAPHIC... AVAILABLE AT
 HURRICANES.GOV.  THIS IS A LIFE-THREATENING SITUATION.  PERSONS
 LOCATED WITHIN THESE AREAS SHOULD TAKE ALL NECESSARY ACTIONS TO
 PROTECT LIFE AND PROPERTY FROM RISING WATER AND THE POTENTIAL FOR
 OTHER DANGEROUS CONDITIONS.  PROMPTLY FOLLOW EVACUATION AND OTHER
 INSTRUCTIONS FROM LOCAL OFFICIALS.
  
 INTERESTS ELSEWHERE IN THE SOUTHEASTERN UNITED STATES SHOULD MONITOR
 THE PROGRESS OF IRMA.
  
 TROPICAL STORM CENTER LOCATED NEAR 30.3N  83.1W AT 11/1500Z
 POSITION ACCURATE WITHIN  20 NM
  
 PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT  15 KT
  
 ESTIMATED MINIMUM CENTRAL PRESSURE  975 MB
 MAX SUSTAINED WINDS  55 KT WITH GUSTS TO  65 KT.
 50 KT.......140NE 140SE  90SW 120NW.
 34 KT.......360NE 230SE 150SW 200NW.
 12 FT SEAS..500NE 360SE 450SW   0NW.
 WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
 MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
  
 REPEAT...CENTER LOCATED NEAR 30.3N  83.1W AT 11/1500Z
 AT 11/1200Z CENTER WAS LOCATED NEAR 29.6N  82.7W
  
 FORECAST VALID 12/0000Z 32.0N  84.5W...INLAND
 MAX WIND  50 KT...GUSTS  60 KT.
 50 KT... 60NE  50SE  50SW  50NW.
 34 KT...220NE 120SE 100SW 100NW.
  
 FORECAST VALID 12/1200Z 33.9N  86.6W...INLAND
 MAX WIND  30 KT...GUSTS  40 KT.
  
 FORECAST VALID 13/0000Z 35.0N  88.4W...POST-TROP/INLAND
 MAX WIND  25 KT...GUSTS  35 KT.
  
 FORECAST VALID 13/1200Z 36.0N  89.0W...POST-TROP/INLAND
 MAX WIND  20 KT...GUSTS  30 KT.
  
 FORECAST VALID 14/1200Z...DISSIPATED
  
 REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 30.3N  83.1W
  
 NEXT ADVISORY AT 11/2100Z
  
 $$
 FORECASTER PASCH
  
  
 
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