Post Storm Hurricane Report
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624
ACUS72 KKEY 240045 AAA
PSHKEY

POST TROPICAL CYCLONE REPORT...HURRICANE IRMA...UPDATED
NATIONAL WEATHER SERVICE KEY WEST FL
845 PM EDT SAT SEP 23 2016

UPDATED TO INCLUDE RAINFALL DATA FROM BAHIA HONDA KEY


NOTE: THE DATA SHOWN HERE ARE PRELIMINARY....AND SUBJECT TO UPDATES
AND CORRECTIONS AS APPROPRIATE.

THIS REPORT INCLUDES EVENTS OCCURRING WHEN WATCHES AND/OR WARNINGS
WERE IN EFFECT...OR WHEN SIGNIFICANT FLOODING ASSOCIATED WITH IRMA
OR ITS REMNANTS WAS AFFECTING THE AREA.

COUNTIES INCLUDED...MONROE


A. LOWEST SEA LEVEL PRESSURE/MAXIMUM SUSTAINED WINDS AND PEAK GUSTS
---------------------------------------------------------------------
METAR OBSERVATIONS...
NOTE: ANEMOMETER HEIGHT IS 10 METERS AND WIND AVERAGING IS 2 MINUTES
---------------------------------------------------------------------
LOCATION  ID    MIN    DATE/     MAX      DATE/     PEAK    DATE/
LAT  LON        PRES   TIME      SUST     TIME      GUST    TIME
DEG DECIMAL     (MB)   (UTC)     (KT)     (UTC)     (KT)    (UTC)
---------------------------------------------------------------------
KEYW-KEY WEST INTERNATIONAL AIRPORT
24.56 -81.76                  I 020/052  10/1115   030/082 10/1113

KMTH-FLORIDA KEYS MARATHON INTERNATIONAL AIRPORT
24.73 -81.05                  I 060/044  09/2353   060/062 09/2345


NON-METAR OBSERVATIONS...
NOTE: ANEMOMETER HEIGHT IN METERS AND WIND AVERAGING PERIOD IN
MINUTES INDICATED UNDER MAXIMUM SUSTAINED WIND IF KNOWN
---------------------------------------------------------------------
LOCATION  ID    MIN    DATE/     MAX      DATE/     PEAK    DATE/
LAT  LON        PRES   TIME      SUST     TIME      GUST    TIME
DEG DECIMAL     (MB)   (UTC)     (KT)     (UTC)     (KT)    (UTC)
---------------------------------------------------------------------
KYWF1 - KEY WEST NOAA/NOS TIDE GAUGE
25.55 -81.81                    340/061  10/1224   340/078 10/1224
ANEMOMETER HEIGHT 15 M (49.2 FT AGL)

VCAF1 - VACA KEY NOAA/NOS TIDE GAUGE
24.71 -81.11                    160/054  10/1342   160/081 10/1342
ANEMOMETER HEIGHT 6.5 M (21.3 FT AGL)

XSMS - WEATHERFLOW KEY WEST COAST GUARD SECTOR
24.57 -81.57    952.9 10/1225   014/053  10/1140   349/077 10/1245

XUMK - WEATHERFLOW UPPER MATECUMBE KEY
24.92 -80.64    976.3 10/1256   160/061  10/1436   158/081 10/1401

XSKL - WEATHERFLOW SOUTH KEY LARGO
25.10 -80.43    980.8 10/1347   135/054  10/1542   135/074 10/1542

TS607 - KEY DEER NATIONAL WILDLIFE REFUGE RAWS (BIG PINE KEY)
24.72 -81.39                                       104/104 10/1338
ANEMOMETER HEIGHT 6.1 M (20 FT AGL)

WFO KEY WEST (ROOFTOP RSOIS)
24.55 -81.79                                       030/079 10/1155

USCG ISLAMORADA STATION
24.95 -80.59                                       050/071 10/0430
ANEMOMETER HEIGHT 5.5 M (18 FT AGL)

104.1 FM STUDIO - UPPER SUGARLOAF KEY
24.67 -81.53    939.7 10/1315
REMARK:  REPORTED AS 27.75 IN


B. MARINE OBSERVATIONS...
NOTE: ANEMOMETER HEIGHT IN METERS AND WIND AVERAGING PERIOD IN
MINUTES INDICATED UNDER MAXIMUM SUSTAINED WIND IF KNOWN
---------------------------------------------------------------------
LOCATION  ID    MIN    DATE/     MAX      DATE/     PEAK    DATE/
LAT  LON        PRES   TIME      SUST     TIME      GUST    TIME
DEG DECIMAL     (MB)   (UTC)     (KT)     (UTC)     (KT)    (UTC)
---------------------------------------------------------------------
PLSF1 - PULASKI SHOAL LIGHT CMAN
24.70 -82.77    986.5 10/1500   010/059  10/1200   010/072 10/1142
ANEMOMETER HEIGHT 17.7 M (58.1 FT AMSL)

XSMS - WEATHERFLOW SMITH SHOAL LIGHT
24.72 -81.92    964.6 10/1230   027/067  10/1210   035/084 10/0905

XALG - WEATHERFLOW ALLIGATOR REEF LIGHT
24.85 -80.62    977.0 10/1204   106/062  10/1159   106/081 10/1159

MLRF1 - MOLASSES REEF LIGHT CMAN
25.01 -80.38    884.7 10/1300 I 130/065  10/1200   140/080 10/1300
                                140/065  10/1300
ANEMOMETER HEIGHT 15.8 M (51.8 FT AMSL)

XCFL - WEATHERFLOW CARYSFORT REEF LIGHT
25.23 -80.21    986.8 10/1325   120/062  10/1240   124/081 10/1335
ANEMOMETER HEIGHT 47 FEET AMSL


C. STORM TOTAL RAINFALL FROM 0400 UTC SEP 09 UNTIL 0400 UTC SEP 12
---------------------------------------------------------------------
CITY/TOWN                    COUNTY               ID         RAINFALL
LAT LON                                                       (IN)
DEG DECIMAL
---------------------------------------------------------------------
1 SW KEY WEST
24.55 -81.79                 MONROE              KKEY         5.70

1 WSW BAHIA HONDA KEY
24.66 -81.28                 MONROE              BPNF1        7.58

REMARKS: DUE TO INCOMPLETE RAINFALL RECORDS FROM FAILED AUTOMATED
STATIONS AND MANDATORY RESIDENTIAL EVACUATION OF MONROE COUNTY
FLORIDA KEYS...NO RELIABLE DIRECT STORM TOTAL RAINFALL MEASUREMENTS
EXIST AT THIS TIME.


D. INLAND FLOODING...
---------------------------------------------------------------------
MONROE FLORIDA KEYS...RAINFALL FLOODING OF 6 TO 18 INCHES IN DEPTH
OBSERVED IN OCEAN REEF DURING MONROE EOC CONTINUITY OF OPERATIONS
CLEARLY DISTINGUISHABLE FROM STORM SURGE. RAINFALL ON TOP OF
EXISTING STORM SURGE RESULTED IN TOTAL WATER HEIGHT 6 TO 10 INCH
HIGHER STORM SURGE VALUES IN NEW TOWN KEY WEST PER MEASURED WATERLINES.

REMARKS:  STORM SURGE VALUES GREATLY EXCEEDED POTENTIAL RAINFALL
FLOOD DEPTHS ACROSS MOST AREAS OF THE FLORIDA KEYS AND WILL B
(TOP OF THE 5TH STOREY ABOVE GROUND)E VERY
DIFFICULT TO DISTINGUISH.

---------------------------------------------------------------------

E. MAXIMUM STORM SURGE AND STORM TIDE...
OFFICIAL TIDE GAUGES NOTED WITH LEADING G
---------------------------------------------------------------------

COUNTY           CITY/TOWN        SURGE   TIDE   DATE/   BEACH
                 OR LOCATION      (FT)    (FT)   TIME    EROSION
---------------------------------------------------------------------
MONROE           G KYWF1-KEY WEST  2.77   2.73  10/1742           I
MONROE           G KYWF1-KEY WEST  3.29   2.56  10/1424           I

MONROE           G VCAF1-VACA KEY  2.77   2.21  11/0118           I
MONROE           G VCAF1-VACA KEY  2.80   2.19  11/0130           I

MONROE           G MANATEE BAY CR         4.05  10/1000           I

REMARKS: FOR EACH STATION...
         ...FIRST ROW DENOTES TIME OF MAX STORM TIDE IN FT NAVD88
         ...SECOND ROW DENOTES TIME OF MAX STORM SURGE IN FT
         ...MANATEE BAY CREEK USGS GAUGE

ADDITIONAL REMARKS:
BASED ON DAMAGE SURVEYS...THE ESTIMATED INUNDATION OR PEAK FLOODING
ABOVE GROUND (ABOVE MEAN HIGHER HIGH WATER - MHHW) REACHED 5 TO 8
FEET OVER PORTIONS OF THE LOWER AND MIDDLE KEYS.  THIS INCLUDES
PORTIONS OF SUGARLOAF KEY...CUDJOE KEY...RAMROD KEY...BIG PINE
KEY...BAHIA HONDA KEY...VACA KEY (MARATHON AND KEY COLONY
BEACH)...AND DUCK KEY.

OFFICIAL GAUGES AT KEY WEST AND VACA KEY ARE LOCATED ON THE GULF OF
MEXICO COAST AND BAYSIDE RESPECTIVELY. KEY WEST STORM TIDE LEVELS
WERE OBSERVED TO BE CONSISTENT WITH OBSERVED STORM SURGE FLOODING
IN KEY WEST. VACA KEY BAYSIDE WAS IN THE LEE OF THE MAXIMUM SOUTH
WINDS WITH MAXIMUM STORM TIDE VALUES OCCURRING WELL AFTER HURRICANE
IRMA WAS CENTERED 35 MILES EAST-NORTHEAST OF FORT MYERS.


F. TORNADOES...
---------------------------------------------------------------------
(DIST)CITY/TOWN              COUNTY           DATE/         EF SCALE
LAT LON (DEG DECIMAL                          TIME(UTC)    (IF KNOWN)
DESCRIPTION
---------------------------------------------------------------------

REMARKS:  NO DISCERNABLE TORNADO DAMAGE PATHS WERE DETERMINED AT
THIS TIME. THERE WAS EVIDENCE OF NON-UPDRAFT-INDUCED MESO-VORTICY
DAMAGE RESULTING IN OPPOSITE FALL OF A CONTINUOUS STRETCH OF WOOD
AND HOLLOW SPUN CONCRETE POWER DISTRIBUTION POLES ALONG KEY DEER
BOULEVARD ALMOST TWO MILES NORTHWEST OF AN AREA OF LOCALLY EXTREME
WIND DAMAGE ON BIG PINE KEY. THIS WIND DAMAGE LIKELY OCCURRED
WITHIN THE ALMOST TWO-HOUR PASSAGE OF THE EASTERN EYEWALL OF
HURRICANE IRMA.


G. STORM IMPACTS BY COUNTY...
---------------------------------------------------------------------

COUNTY            DEATHS           INJURIES             EVACUATIONS
DESCRIPTION
---------------------------------------------------------------------
MONROE              9             SEE REMARKS            SEE REMARKS


THE FOLLOWING REPORT IS PRELIMINARY AND MAY BE REVISED PENDING
OFFICIAL JURISDICTIONAL AND DIVISIONAL REPORTS.

REMARKS: FATALITY INFO RELEASED BY THE MONROE COUNTY SHERIFFS
OFFICE. THIS VALUE MAY BE REVISED PENDING RELEASE OF ADDITIONAL
INFORMATION FROM AN OFFICIAL MONROE COUNTY SOURCE. INCLUDES BOTH
DIRECT AND INDIRECT CAUSES.

MORE THAN 40 INJURIES WERE IMMEDIATELY REPORTED WITHIN ONE DAY OF
HURRICANE IRMA`S DEPARTURE...BUT TOTAL INJURIES BOTH DIRECT AND
INDIRECT ARE PENDING.

PRELIMINARY EVACUATION TOTALS PRIOR TO THE ARRIVAL OF HURRICANE IRMA
OUT OF APPROXIMATLEY 73,000 RESIDENTS OF MONROE COUNTY INDICATE
APPROXIMATELY A 75 PERCENT EVACUATION RATE.

MONROE LOWER KEYS...KEY WEST THROUGH LITTLE DUCK KEY

OVER BAHIA HONDA THROUGH LITTLE TORCH KEY...THE STRONGEST ESTIMATED
WINDS WERE EVIDENT...POSSIBLY ATTRIBUTABLE TO A MESO-VORTEX
CIRCULATION WITHIN THE EYEWALL. A GENERAL PATH OF MAXIMUM WIND
DAMAGE OCCURRED FROM JUST SOUTH OF BIG PINE KEY PARK THROUGH
KEY DEER BOULEVARD NORTH OF SOUTH STREET. COMPLETE ROOF STRUCTURE
FAILURE INVOLVING SNAPPED WOOD TRUSSES WAS OBSERVED ON SEVERAL HOMES
ALONG WITH COMPLETE EXTERIOR WALL FAILURE ON A WATERFRONT HOME. THE
PATH CONTINUED ACROSS KEY DEER BOULEVARD WHERE UTILITY POLES BOTH OF
WOOD AND HOLLOW-SPUN CONCRETE DESIGN WERE SNAPPED WITH NUMEROUS
SPANS LYING IN COMPLETELY OPPOSITE DIRECTIONS...THE SOUTHERN SPANS
OPPOSITE TO THE PATH DIRECTION. PEAK WIND GUSTS ESTIMATED 150 TO 160
MPH ALONG THE NORTHERN SIDE OF THE POSSIBLE CIRCULATION. ELSEWHERE
ACROSS BIG PINE KEY...SIGNFICANT ROOF LOSS/EXTERIOR WALL COLLAPSE OF
OLDER MOBILE HOMES...LARGE SECTIONS OF ROOF COVERINGS ALL
TYPES...SOFFET DAMAGE AND LARGE METAL ROOF...WALL...AND DOOR
FAILURES ON A MODERN METAL BUILDING SYSTEM INDICATED MORE WIDESPREAD
ESTIMATED PEAK WIND GUSTS OF 120 TO 130 MPH.

FROM RAMROD KEY THROUGH SUGARLOAF KEY...WIDESPREAD AND BUSINESS -
RESIDENTIAL ROOF COVERING DAMAGE OF ALL TYPES WAS OBSERVED...WITH
ISOLATED ROOF TRUSS OR GABLE END FAILURES OF OLDER DESIGN. IT WAS
NOTED A DIAGONAL METAL CROSS BRACE ON THE POWER TRANSMISSION LINE
ACROSS NILES CHANNEL BECAME DETACHED FROM ONE VERTICAL CONCRETE
COLUMN INDICATIVE OF SIGNIFICANT FLEXING OF THE TRANSMISSION TOWERS.
ESTIMATED PEAK WIND GUST 110 TO 120 MPH.

FROM LOWER SUGARLOAF THROUGH BIG COPPITT KEY...WIDESPREAD SMALL
RESIDENTIAL AND BUSINESS ROOF COVERINGS WITH ISOLATED STRUCTURAL
GABLE END OR OVERHANG DAMAGE WAS NOTED ESPECIALLY IN AREAS OF OPEN
NORTH WIND EXPOSURE. ISOLATED MOBILE HOME DESTRUCTION INCLUDING
COLLAPSE OF ALL WALLS...ALTHOUGH SOME MODERN MOBILE HOMES ADJACENT
TO PROPERTIES WITH SEVERE DESTRUCTION EXHIBITED FEW SIGNS OF
COSMETIC DAMAGE. ESTIMATED PEAK WIND GUSTS 100 TO 110 MPH.

FROM BOCA CHICA KEY THROUGH KEY WEST...LOSSES OF ROOF
COVERINGS...SOFFET DAMAGE TO RESIDENTIAL HOMES AND CONDOMINIUMS WERE
NOTED...WITH TWO LODGING PROPERTIES INDICATED WITH GABLE END WOOD
TRUSS FAILURES OF BOTH MID-RISE AND TWO-STOREY DESIGN. PEAK
ESTIMATED WIND GUSTS 90 TO 100 MPH...ALTHOUGH THE MID-RISE ROOF
STRUCTURE FAILURE LOCATED WITH OPEN NORTH WIND EXPOSURE OFF THE GULF
OF MEXICO MAY HAVE INDICATED ISOLATED STRONGER WIND GUSTS OF 100
TO 110 MPH AT ROOFTOP LEVEL IN THIS HOUR.

TREE DAMAGE WAS WIDESPREAD AND EXTENSIVE.


MONROE MIDDLE KEYS...PIGEON KEY/MARATHON THROUGH CRAIG KEY

WIND DAMAGE FROM LONG KEY/LAYTON THROUGH GRASSY KEY INCLUDED SEVERAL
SECTIONS OF PULLED METAL BUILDING SYSTEM WALL PANELS...DAMAGE TO
BUILT-UP AND SHINGLE ROOF COVERINGS...VINYL SIDING...AND PLASTIC
PANELED SIGNS. PEAK WIND GUSTS ESTIMATED 90 TO 100 MPH.

THE FOLLOWING REPORT IS PRELIMINARY AND MAY BE REVISED PENDING
OFFICIAL JURISDICTIONAL AND DIVISIONAL REPORTS.
IN THE KEY COLONY BEACH AND MARATHON VICINITY...AREAL OVERFLIGHT
FROM LOCAL AGENCIES REVEALED SIGNIFICANT ROOF COVERING LOSS AND
ISOLATED ROOF TRUSS DAMAGE ON OLDER DESIGN OCEANFRONT HOMES. OLDER
RETAIL STORES AND A STRIP MALL DISPLAYED COMPLETE UPLIFT AND
COLLAPSE OF ROOF STRUCTURES OF BOX TRUSS TYPE...WHILE MODERN DESIGN
STRUCTURES DISPLAYED SIGNIFICANT SECTIONS OF ROOF COVERING
LOSS...INCLUDING METAL PANEL-OVER WOOD SHEATHING AND BUILT-UP
TAR/RUBBER COVERINGS. SOME OLDER SERVICE STATION CANOPIES DISPLAYED
COLUMN BUCKLING WHEREAS MODERN DESIGNS PERFORMED WELL OR HAD SLIGHT
RACKING. SIGNIFICANT ROOF PANEL DAMAGE TO MOBILE HOMES OVER BOTH
OLDER AND MODERN DESIGN. WHILE TRAFFIC SIGNAL MASTS REMAINED IN
PLACE SOME HORIZONTALLY MOUNTED SIGNALS WERE STILL BLOWN 90 DEGREES
OUT OF ALIGNMENT. PEAK WIND GUSTS ESTIMATED 100 TO 115 MPH.

TREE DAMAGE WAS WIDESPREAD AND EXTENSIVE.


MONROE UPPER KEYS...LOWER MATECUMBE KEY THROUGH OCEAN REEF

WIND DAMAGE FROM OCEAN REEF THROUGH KEY LARGO WAS CONSISTENT WITH
ESTIMATED PEAK GUSTS NEAR 90 MPH WITH LIMITED LOSSES OF BUILT-UP
ROOF COVERINGS...AND METAL FASCIA FROM GAS STATION CANOPIES. SOME
OLDER STRIP MALLS IN KEY LARGO DISPLAYED LARGE LOSSES OF SHINGLE AND
BARRELL TILE COVERINGS.

IN TAVERNIER...MODERN DESIGN LARGE METAL BUILDING SYSTEMS DISPLAYED
FAILURE OF OVERHEAD DOORS ON EAST AND SOUTHEAST-FACING SIDES...WITH
OLDER DESIGNS INCLUDING SOME PULLED EXTERIOR SHEET PANELS. PEAK
GUSTS NEAR 100 MPH ESTIMATED. SIGN DAMAGE WAS MORE PREVALENT THAN IN
KEY LARGO.

IN ISLAMORADA...WIND ESTIMATION AMONG MOBILE HOMES WAS DIFFICULT DUE
TO IMPACTS OF STORM SURGE FLOODING...HOWEVER ROOF PANELS WERE
STRIPPED FROM SOME HOMES ALONG WITH VINYL SIDING DAMAGE ON MODERN
SINGLE FAMILY HOMES. ONE SERVICE STATION CANOPY WAS COMPLETELY
OVERTURNED...HOWEVER THERE WAS NO DISCERNABLE DAMAGE TO THE
FOUNDATION FLANGES OR COLUMNS. PEAK WIND GUSTS ESTIMATED AT 90 TO
100 MPH.

TREE DAMAGE WAS WIDESPREAD AND EXTENSIVE.


THROUGHOUT THE KEYS--WIDESPREAD LOSS OF ELECTRIC POWER...CELLULAR
COMMUNICATIONS AND WATER PRESSURE OCCURRED. MOST POWER PROBLEMS WERE
DUE TO FAILURE OF DISTRIBUTION SYSTEMS...ALTHOUGH SIGNICANT
INSULATOR DAMAGE OCCURRED NEAR THE EAST END OF LONG KEY ON THE
TRANSMISSION LINE. THE WATER TRANSMISSION PIPE WAS LARGELY
INTACT...HOWEVER NUMEROUS NEIGHBORHOOD DISTRIBUTION LEAKS OCCURRED
AS TREES UPROOTED. NO COMMUNICATIONS TOWERS WERE REPORTED COLLAPSED
OR DEFORMED...ALTHOUGH MOUNTED ANTENNAS ON THE TOWERS WERE DAMAGED
OR FELL OUT OF ALIGNMENT. A FEW MICROWAVE RELAY DISHES WERE TORN
FROM THEIR TOWERS. WIDESPREAD DAMAGE TO TELECOM AND FIBER CABLES DUE
TO FALLING TREES AND DIRECT WIND IMPACTS STRIPPING FROM POLES AND
BEING STRETCHED ACROSS STREETS.


$$

LEGEND:
I-INCOMPLETE DATA
E-ESTIMATED

RIZZO/MORELAND



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