weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

2 products issued by NWS for: Marathon FL
Share |


Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Key West FL
415 AM EDT Mon Oct 21 2019

FLZ076>078-GMZ031>035-042>044-052>055-072>075-220815-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
Bayside and Gulf side from Craig Key to west end of Seven Mile
Bridge-
Gulf waters from East Cape Sable to Chokoloskee 20 to 60 NM out
and beyond 5 fathoms-
Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel-
Gulf of Mexico from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
415 AM EDT Mon Oct 21 2019

This Hazardous Weather Outlook is for the Florida Keys and
adjacent coastal waters.

.DAY ONE...TODAY AND TONIGHT

Minor coastal flooding will continue today and tonight across
portions of the Florida Keys around the times of higher high
tide. See the latest Coastal Hazard Message for additional
details.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Minor coastal flooding is possible in portions of the Florida
Keys. The coastal flooding will be greatest around the times of
higher high tides in the Middle and Lower Keys, but water levels
will remain high even during low tide along the Bayside of the
Upper Keys. See the latest Coastal Hazard Message for additional
details.

Isolated thunderstorms are possible along the Florida Keys and the
surrounding coastal waters Thursday through Sunday.

The primary thunderstorm hazard will be cloud to surface lightning
strikes.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$

APA




Coastal Flood Statement

Coastal Hazard Message
National Weather Service Key West FL
428 AM EDT Mon Oct 21 2019

FLZ076-077-211630-
/O.EXT.KKEY.CF.S.0012.000000T0000Z-191021T2200Z/
Monroe Upper Keys-Monroe Middle Keys-
428 AM EDT Mon Oct 21 2019

...MINOR COASTAL FLOODING CONTINUES ACROSS LOW LYING AREAS OF THE
   MIDDLE AND UPPER FLORIDA KEYS...

* COASTAL FLOODING...Minor saltwater flooding will continue to
  affect the Middle Florida Keys, with total water levels around
  two feet above mean sea level during high tides, or between
  0.75 and 1 foot above the predicted tide levels. Minor
  saltwater flooding will continue to impact the Upper Florida
  Keys, with total water levels 1.5 to 2 feet above man sea
  level during high tides, or 0.75 to 1 foot above the predicted
  tide levels.

* TIMING...For the Middle Keys, the impacts from saltwater
  flooding will be greatest at the time of the higher high tide,
  which will occur broadly during the mid to late afternoon. For
  the Upper Keys, water levels will stay high, with little relief
  at low tide.

* IMPACTS...Minor saltwater flooding of low elevation streets
  and lots is likely. Some storm drains will overflow and some
  seawalls and docks will be overtopped. Boaters can expect less
  clearance under fixed bridges. Motorists should remember that
  persistent puddles around the times of high tide are almost
  certain to contain a mix of saltwater.

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE