weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Hazardous Weather Outlook


Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
436 AM EDT Sun May 20 2018

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
201500-
Lake Okeechobee-Biscayne Bay-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-Glades-Hendry-
Inland Palm Beach-Metro Palm Beach-Coastal Collier-Inland Collier-
Inland Broward-Metro Broward-Inland Miami-Dade-Metro Miami-Dade-
Mainland Monroe-Coastal Palm Beach-Coastal Broward-Coastal Miami-
Dade-Far South Miami-Dade-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
436 AM EDT Sun May 20 2018

...Flood Watch Miami-Dade, Broward and Palm Beach Counties Until 11 AM...
...Gusty Winds with Showers and Isolated Thunderstorms...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Flooding: Periods of heavy rainfall are expected today, mainly over
metro Southeast Florida this morning through midday and over
interior and Gulf coast areas this afternoon and early evening. These
downpours will likely cause many areas of minor flooding on roadways
and poor drainage areas. Where the heaviest rain occurs, more
significant flooding is possible with water intruding on vulnerable
structures and causing impassable travel lanes and roadways.

Rip currents: Southeast wind of 15 to 20 mph will lead to a moderate
risk of rip currents at the Atlantic beaches.

Thunderstorms: Isolated thunderstorms are expected over Southeast
Florida, as well as the Atlantic, Gulf of Mexico and Lake Okeechobee
waters this morning through midday, with a few thunderstorms also
spreading to the interior and Gulf coast this afternoon and early
evening as well as the adjacent Gulf waters.

Waterspouts: A few waterspouts are possible over all local waters
with the stronger showers and thunderstorms.

Wind: Gusty showers and thunderstorms may produce wind gusts of 40 to
45 mph, mainly over Atlantic waters and Southeast Florida through
midday, and interior and Gulf coast and the Gulf of Mexico waters
this afternoon and early evening.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Numerous showers and isolated thunderstorms with the threat of
localized flooding will continue on Monday. After a brief decrease
in showers and thunderstorms on Tuesday and Wednesday, another period
of heavy rainfall, thunderstorms and potential flooding is likely
starting Thursday and lasting into next weekend as deep tropical
moisture associated with a developing low pressure area surges north
over the region.

The risk of rip currents will remain moderate to high at the Atlantic
beaches through at least Wednesday.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however individual
spotters are encouraged to report flooding to the National Weather
Service forecast office in Miami.

For more information...visit the National Weather Service in
Miami website at www.weather.gov/miami.

$$

Molleda

Hazardous Weather Outlook
National Weather Service Melbourne FL
548 AM EDT Sun May 20 2018

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-210015-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia-
Brevard County Line to Sebastian Inlet 0-20 nm-
Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia-
Brevard County Line 20-60 nm-Volusia-
Brevard County Line to Sebastian Inlet 20-60 nm-
Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia County-
Northern Lake County-Orange-Seminole-Southern Brevard County-
Osceola-Indian River-Okeechobee-St. Lucie-Martin-
Coastal Volusia County-Southern Lake County-
Northern Brevard County-
548 AM EDT Sun May 20 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
Ample moisture will generate numerous showers and embedded
isolated lightning storms today, capable of producing locally
heavy rain, cloud to ground lightning strikes, and wind gusts
between 30 to 40 mph. The greatest coverage is expected over the
Treasure Coast early this morning, before spreading to the northwest
and focusing across the interior this afternoon.

.FLOOD IMPACT...
Additional showers and isolated thunderstorms capable of producing
locally heavy rainfall are forecast, particularly along the
Treasure Coast this morning. The threat of locally heavy rainfall
will spread to the north and west late this morning and this
afternoon. Torrential downpours will be capable of producing 1 to
2 inches of rain in a short 60 to 90 minute period. This will
likely cause some temporary inundation of roads and other poor
drainage areas, especially in locations which have received heavy
rainfall over the past several days.

.RIP CURRENT IMPACT...
Southeast winds will result in a northward flowing current in the
surf zone again today. Longshore currents can be strong enough to
knock you off the sandbar and into deeper water. Always swim near
a lifeguard and never try to swim directly against currents that
occur at the beaches.

.MARINE THUNDERSTORM GUST IMPACT...
Wind gusts of 30 to 40 knots will be possible over the nearshore
Atlantic, Intracoastal Waterway, and on inland lakes. Boaters
should be on the lookout for storms approaching from the south
and move to safe harbor if storms threaten.

.WIND AND SEA IMPACT...
Southeast winds between 15 to 20 knots will generate choppy seas
up to 6 feet well offshore. Small craft operators should exercise
caution.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
Scattered to numerous afternoon and evening showers and
thunderstorms are forecast to continue into next week, with
locally heavy rainfall, dangerous cloud to ground lightning
strikes, and gusty winds the primary threats.

.SPOTTER INFORMATION STATEMENT...
Formal spotter activation is not anticipated today; however,
storm spotters are still requested to submit rainfall reports of
2 inches or more to the National Weather Service in Melbourne.

$$

Ulrich

Hazardous Weather Outlook
National Weather Service Tampa Bay Ruskin FL
445 AM EDT Sun May 20 2018

FLZ043-050-052-056-057-061-139-142-148-149-151-155-160-162-165-
239-242-248-249-251-255-260-262-265-GMZ830-836-850-853-856-870-
873-876-210000-
Sumter-Pinellas-Polk-Hardee-Highlands-DeSoto-Coastal Levy-
Coastal Citrus-Coastal Hernando-Coastal Pasco-
Coastal Hillsborough-Coastal Manatee-Coastal Sarasota-
Coastal Charlotte-Coastal Lee-Inland Levy-Inland Citrus-
Inland Hernando-Inland Pasco-Inland Hillsborough-Inland Manatee-
Inland Sarasota-Inland Charlotte-Inland Lee-Tampa Bay waters-
Charlotte Harbor and Pine Island Sound-
Coastal waters from Tarpon Springs to Suwannee River FL out 20 NM-
Coastal waters from Englewood to Tarpon Springs FL out 20 NM-
Coastal waters from Bonita Beach to Englewood FL out 20 NM-
Waters from Tarpon Springs to Suwannee River FL out 20 to 60 NM-
Waters from Englewood to Tarpon Springs FL out 20 to 60 NM-
Waters from Bonita Beach to Englewood FL out 20 to 60 NM-
445 AM EDT Sun May 20 2018

This Hazardous Weather Outlook is for West Central And Southwest
Florida.

.DAY ONE...Today and Tonight.

...THUNDERSTORM IMPACT...
Numerous showers and scattered thunderstorms are expected today.
Thunderstorms that develop will be capable of producing gusty
winds...heavy rain...and frequent deadly lightning strikes.
Localized flooding of streets and low lying flood prone areas is
possible.

...RIVER FLOOD IMPACT...
Several days of heavy rain will cause to the Alafia river at
Lithia to rise near flood stage today. If additional heavy rain
impacts the river basin this afternoon, the Alafia may rise above
flood stage. Residents living along the river should remain aware
of water levels and be ready to move to higher ground should
flooding be observed.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

...THUNDERSTORM IMPACT...
Numerous showers and scattered thunderstorms are expected for the
next several days  Thunderstorms will be capable of producing
strong gusty winds...locally heavy rain...and frequent deadly
lightning strikes.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

$$

McKaughan

Hazardous Weather Outlook
National Weather Service Key West FL
355 AM EDT Sun May 20 2018

FLZ076>078-GMZ031>035-042>044-052>055-072>075-211000-
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-
355 AM EDT Sun May 20 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE FLORIDA KEYS AND
ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

A Small Craft Advisory is in effect for the Florida Straits today
and tonight.

Isolated thunderstorms will impact the Florida Keys, as well as
nearshore and offshore waters surrounding the island chain. The
primary thunderstorm hazard is cloud to surface lightning strikes.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Isolated thunderstorms are possible along the Florida Keys, as
well as over nearshore and offshore waters adjacent to the island
chain Monday through Saturday. The primary thunderstorm hazard
will be cloud to surface lightning strikes.

A Small Craft Advisory is likely for the Florida Straits Monday
and Tuesday. A Small Craft Advisory may be required for the
coastal waters of the Gulf of Mexico and Hawk Channel Monday
through Tuesday. A Small Craft Advisory may be required for the
coastal waters of the Florida Straits Tuesday night. A Small Craft
Advisory may be required for the coastal waters of the Gulf of
Mexico and Atlantic Thursday night. A Small Craft Advisory may be
required for all Keys coastal waters Friday and Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$

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: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE