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TROPICAL STORM IRMA FORECAST/ADVISORY NUMBER  51
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL112017
2100 UTC MON SEP 11 2017

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

THE STORM SURGE WARNINGS FROM FERNANDINA BEACH SOUTHWARD... FROM
THE AUCILLA RIVER WESTWARD... AND FROM CLEARWATER BEACH
SOUTHWARD... INCLUDING TAMPA BAY... HAVE BEEN DISCONTINUED.

THE TROPICAL STORM WARNING FROM THE FLAGLER/VOLUSIA COUNTY LINE TO
ALTAMAHA SOUND IS DISCONTINUED.

THE TROPICAL STORM WARNING FROM NORTH OF THE SUWANNEE RIVER TO THE
OKALOOSA/WALTON COUNTY LINE IS DISCONTINUED.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A STORM SURGE WARNING IS IN EFFECT FOR...
* NORTH OF FERNANDINA BEACH TO THE SOUTH SANTEE RIVER
* NORTH OF CLEARWATER BEACH TO THE AUCILLA RIVER

A TROPICAL STORM WARNING IS IN EFFECT FOR...
* NORTH OF ALTAMAHA SOUND 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 31.5N  84.0W AT 11/2100Z
POSITION ACCURATE WITHIN  20 NM

PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 340 DEGREES AT  15 KT

ESTIMATED MINIMUM CENTRAL PRESSURE  985 MB
MAX SUSTAINED WINDS  45 KT WITH GUSTS TO  55 KT.
34 KT.......360NE 230SE 150SW 240NW.
12 FT SEAS..600NE 390SE 390SW   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 31.5N  84.0W AT 11/2100Z
AT 11/1800Z CENTER WAS LOCATED NEAR 30.9N  83.5W

FORECAST VALID 12/0600Z 33.1N  85.5W...INLAND
MAX WIND  35 KT...GUSTS  45 KT.
34 KT...220NE 120SE 100SW 100NW.

FORECAST VALID 12/1800Z 34.5N  87.3W...INLAND
MAX WIND  30 KT...GUSTS  40 KT.

FORECAST VALID 13/0600Z 35.8N  88.8W...POST-TROP/INLAND
MAX WIND  25 KT...GUSTS  35 KT.

FORECAST VALID 13/1800Z 37.0N  88.5W...POST-TROP/INLAND
MAX WIND  20 KT...GUSTS  30 KT.

FORECAST VALID 14/1800Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 31.5N  84.0W

NEXT ADVISORY AT 12/0300Z

$$
FORECASTER PASCH


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