396
WTUS82 KMFL 291527
HLSMFL
FLZ063-066>075-168-172>174-292330-
HURRICANE IDALIA LOCAL STATEMENT ADVISORY NUMBER 12
NATIONAL WEATHER SERVICE MIAMI FL AL102023
1127 AM EDT TUE AUG 29 2023
THIS PRODUCT COVERS SOUTH FLORIDA
**IDALIA STRENGTHENING IN THE SOUTHEASTERN GULF OF MEXICO**
NEW INFORMATION
---------------
* CHANGES TO WATCHES AND WARNINGS:
- NONE
* CURRENT WATCHES AND WARNINGS:
- A TROPICAL STORM WARNING AND STORM SURGE WATCH ARE IN EFFECT
FOR COASTAL COLLIER COUNTY
- A TROPICAL STORM WATCH IS IN EFFECT FOR INLAND COLLIER COUNTY
* STORM INFORMATION:
- ABOUT 300 MILES WEST-SOUTHWEST OF MIAMI FL OR ABOUT 210 MILES
WEST-SOUTHWEST OF NAPLES FL
- 24.6N 84.8W
- STORM INTENSITY 85 MPH
- MOVEMENT NORTH OR 5 DEGREES AT 14 MPH
SITUATION OVERVIEW
------------------
HURRICANE IDALIA IS MOVING NORTHWARD THROUGH THE SOUTHEASTERN GULF
OF MEXICO THIS MORNING. IDALIA IS FORECAST TO STRENGTHEN WHILE
CONTINUING TO MOVE NORTH, AND EVENTUALLY NORTHEAST, ACROSS THE EASTERN
GULF OF MEXICO THROUGH WEDNESDAY.
THE FOLLOWING ARE THE PRIMARY HAZARDS OF CONCERN WITH IDALIA:
* COASTAL FLOODING/SURGE - HIGHER THAN USUAL TIDES DUE TO THE
COMBINATION OF SURGE FROM IDALIA AND THE UPCOMING FULL MOON COULD LEAD
TO COASTAL FLOODING OF 2 TO 4 FEET IN COASTAL COLLIER COUNTY AND 1 TO
3 FEET ALONG THE COAST OF MAINLAND MONROE COUNTY. OTHER VULNERABLE
COASTAL AREAS OF SOUTHERN FLORIDA COULD ALSO EXPERIENCE MINOR COASTAL
FLOODING, ESPECIALLY AROUND THE TIMES OF HIGH TIDE.
* RAINFALL - THE MAJORITY OF THE RAINFALL ASSOCIATED WITH THE SYSTEM
IS FORECAST TO FALL THROUGH WEDNESDAY. THE GREATEST RISK FOR FLASH
FLOODING WILL BE NEAR THE GULF COAST. STORM TOTAL RAIN AMOUNTS OF 2 TO
3 INCHES WITH LOCALIZED HIGHER AMOUNTS. THE HIGHEST AMOUNTS ARE
ANTICIPATED ALONG THE GULF COAST.
* WIND - INCREASINGLY GUSTY WINDS ARE FORECAST TODAY AND WEDNESDAY,
PARTICULARLY ALONG THE GULF COAST AND ADJACENT COASTAL WATERS. A
REASONABLE WORST CASE SCENARIO WOULD HAVE TROPICAL STORM FORCE WINDS
ACROSS COLLIER COUNTY BETWEEN NOW AND WEDNESDAY. THE REMAINDER OF
SOUTH FLORIDA COULD SEE WINDS GUSTS UP TO 35MPH, WITH THE HIGHEST
GUSTS LIKELY DURING THE DAY ON WEDNESDAY.
* TORNADOES - A LOW-END TORNADO THREAT IS POSSIBLE THROUGH WEDNESDAY
AS BANDING FROM THE SYSTEM MOVES ASHORE.
POTENTIAL IMPACTS
-----------------
* SURGE:
PREPARE FOR LIFE-THREATENING SURGE HAVING POSSIBLE SIGNIFICANT IMPACTS
ACROSS COASTAL COLLIER COUNTY. POTENTIAL IMPACTS IN THIS AREA INCLUDE:
- AREAS OF INUNDATION WITH STORM SURGE FLOODING ACCENTUATED BY
WAVES. DAMAGE TO SEVERAL BUILDINGS, MAINLY NEAR THE COAST.
- SECTIONS OF NEAR-SHORE ESCAPE ROUTES AND SECONDARY ROADS BECOME
WEAKENED OR WASHED OUT, ESPECIALLY IN USUALLY VULNERABLE LOW
SPOTS.
- MAJOR BEACH EROSION WITH HEAVY SURF BREACHING DUNES. STRONG AND
NUMEROUS RIP CURRENTS.
- MODERATE DAMAGE TO MARINAS, DOCKS, BOARDWALKS, AND PIERS.
SEVERAL SMALL CRAFT BROKEN AWAY FROM MOORINGS, ESPECIALLY IN
UNPROTECTED ANCHORAGES.
ALSO, PREPARE FOR LOCALLY HAZARDOUS SURGE HAVING POSSIBLE LIMITED
IMPACTS ACROSS MAINLAND MONROE COUNTY.
* WIND:
PREPARE FOR HAZARDOUS WIND HAVING POSSIBLE LIMITED IMPACTS ACROSS SOUTHWEST
FLORIDA. POTENTIAL IMPACTS IN THIS AREA INCLUDE:
- DAMAGE TO PORCHES, AWNINGS, CARPORTS, SHEDS, AND UNANCHORED
MOBILE HOMES. UNSECURED LIGHTWEIGHT OBJECTS BLOWN ABOUT.
- MANY LARGE TREE LIMBS BROKEN OFF. A FEW TREES SNAPPED OR
UPROOTED, BUT WITH GREATER NUMBERS IN PLACES WHERE TREES ARE
SHALLOW ROOTED. SOME FENCES AND ROADWAY SIGNS BLOWN OVER.
- A FEW ROADS IMPASSABLE FROM DEBRIS, PARTICULARLY WITHIN URBAN
OR HEAVILY WOODED PLACES. HAZARDOUS DRIVING CONDITIONS ON
BRIDGES AND OTHER ELEVATED ROADWAYS.
- SCATTERED POWER AND COMMUNICATIONS OUTAGES.
* FLOODING RAIN:
PREPARE FOR DANGEROUS RAINFALL FLOODING HAVING POSSIBLE SIGNIFICANT
IMPACTS ACROSS SOUTHWEST FLORIDA. POTENTIAL IMPACTS INCLUDE:
- MODERATE RAINFALL FLOODING MAY PROMPT SEVERAL EVACUATIONS AND
RESCUES.
- DITCHES AND CANALS MAY QUICKLY BECOME SWOLLEN WITH SWIFT
CURRENTS AND OVERSPILL THEIR BANKS IN A FEW PLACES, ESPECIALLY
IN USUALLY VULNERABLE SPOTS.
- FLOOD WATERS CAN ENTER SOME STRUCTURES OR WEAKEN FOUNDATIONS.
SEVERAL PLACES MAY EXPERIENCE EXPANDED AREAS OF RAPID
INUNDATION AT UNDERPASSES, LOW-LYING SPOTS, AND POOR DRAINAGE
AREAS. SOME STREETS AND PARKING LOTS TAKE ON MOVING WATER AS
STORM DRAINS AND RETENTION PONDS OVERFLOW. DRIVING CONDITIONS
BECOME HAZARDOUS. SOME ROAD AND BRIDGE CLOSURES.
PROTECT AGAINST LOCALLY HAZARDOUS RAINFALL FLOODING HAVING POSSIBLE
LIMITED IMPACTS ACROSS THE REST OF SOUTH FLORIDA.
* TORNADOES:
PREPARE FOR A TORNADO EVENT HAVING POSSIBLE LIMITED IMPACTS ACROSS
SOUTH FLORIDA. POTENTIAL IMPACTS INCLUDE:
- THE OCCURRENCE OF ISOLATED TORNADOES CAN HINDER THE EXECUTION
OF EMERGENCY PLANS DURING TROPICAL EVENTS.
- A FEW PLACES MAY EXPERIENCE TORNADO DAMAGE, ALONG WITH POWER
AND COMMUNICATIONS DISRUPTIONS.
- LOCATIONS COULD REALIZE ROOFS PEELED OFF BUILDINGS, MOBILE
HOMES PUSHED OFF FOUNDATIONS OR OVERTURNED, LARGE TREE TOPS AND
BRANCHES SNAPPED OFF, SHALLOW-ROOTED TREES KNOCKED OVER, MOVING
VEHICLES BLOWN OFF ROADS, AND SMALL BOATS PULLED FROM MOORINGS.
PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------
* EVACUATIONS:
LISTEN TO LOCAL OFFICIAL FOR RECOMMENDED PREPAREDNESS ACTIONS,
INCLUDING POSSIBLE EVACUATION. IF ORDERED TO EVACUATE, DO SO
IMMEDIATELY.
FOR THOSE NOT UNDER EVACUATION ORDERS, ASSESS THE RISK FROM WIND,
FALLING TREES, AND FLOODING AT YOUR LOCATION. IF YOU DECIDE TO MOVE,
RELOCATE TO A SAFER LOCATION NEARBY. IF YOU DO NOT RELOCATE, HELP
KEEP ROADWAYS OPEN FOR THOSE UNDER EVACUATION ORDERS.
* OTHER PREPAREDNESS INFORMATION:
NOW IS THE TIME TO COMPLETE ALL PREPARATIONS TO PROTECT LIFE AND
PROPERTY IN ACCORDANCE WITH YOUR EMERGENCY PLAN. ENSURE YOU ARE IN A
SAFE LOCATION BEFORE THE ONSET OF STRONG WINDS OR POSSIBLE FLOODING.
KEEP CELL PHONES WELL CHARGED. CELL PHONE CHARGERS FOR AUTOMOBILES
CAN BE HELPFUL, BUT BE AWARE OF YOUR RISK FOR DEADLY CARBON MONOXIDE
POISONING IF YOUR CAR IS LEFT IDLING IN A GARAGE OR OTHER POORLY
VENTILATED AREA.
IF YOU ARE A VISITOR, BE SURE TO KNOW THE NAME OF THE CITY OR TOWN IN
WHICH YOU ARE STAYING AND THE NAME OF THE COUNTY OR PARISH IN WHICH
IT RESIDES. LISTEN FOR THESE LOCATIONS IN LOCAL NEWS UPDATES. PAY
ATTENTION FOR INSTRUCTIONS FROM LOCAL AUTHORITIES.
STORM SURGE IS THE LEADING KILLER ASSOCIATED WITH TROPICAL STORMS AND
HURRICANES! MAKE SURE YOU ARE IN A SAFE AREA AWAY FROM THE SURGE
ZONE. EVEN IF YOU ARE NOT IN A SURGE-PRONE AREA, YOU COULD FIND
YOURSELF CUTOFF BY FLOOD WATERS DURING AND AFTER THE STORM. HEED
EVACUATION ORDERS ISSUED BY THE LOCAL AUTHORITIES.
CLOSELY MONITOR WEATHER.GOV, NOAA WEATHER RADIO OR LOCAL NEWS OUTLETS
FOR OFFICIAL STORM INFORMATION. BE READY TO ADAPT TO POSSIBLE CHANGES
TO THE FORECAST. ENSURE YOU HAVE MULTIPLE WAYS TO RECEIVE WEATHER
WARNINGS.
* ADDITIONAL SOURCES OF INFORMATION:
- FOR INFORMATION ON APPROPRIATE PREPARATIONS SEE READY.GOV
- FOR INFORMATION ON CREATING AN EMERGENCY PLAN SEE GETAGAMEPLAN.ORG
- FOR ADDITIONAL DISASTER PREPAREDNESS INFORMATION SEE REDCROSS.ORG
NEXT UPDATE
-----------
THE NEXT LOCAL STATEMENT WILL BE ISSUED BY THE NATIONAL WEATHER
SERVICE IN MIAMI FL AROUND 5PM, OR SOONER IF CONDITIONS WARRANT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
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