weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Hazardous Weather Outlook


Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
307 PM EDT Mon May 21 2018

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
220715-
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-
307 PM EDT Mon May 21 2018

...High Risk of Rip Currents Atlantic Beaches...
...Isolated to Scattered Thunderstorms Across South Florida...

This hazardous weather outlook is for South Florida.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Flooding: Numerous showers and isolated to scattered thunderstorms
will once again have the potential of causing flooding of streets and
poorly drained areas across South Florida.

Rip currents: There is a high risk of rip currents for the Atlantic
beaches.

Thunderstorms: Isolated to scattered thunderstorms will affect most
of South Florida and the adjacent waters today. Thunderstorms will be
most likely over the Gulf of Mexico waters, as well as southeast
coast metro areas and adjacent Atlantic waters during the morning to
midday time frame, and over interior and Gulf coast areas during the
afternoon and early evening.

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

Wind: Gusts of 40 to 45 mph are possible with the stronger showers
and thunderstorms, most likely over the Gulf of Mexico waters, as
well as east coast metro areas and adjacent Atlantic waters during
the morning to midday time frame, and over interior and Gulf coast
areas during the afternoon and early evening.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Scattered to numerous showers and a few thunderstorms will continue
the threat of localized flooding through Wednesday, with the greatest
likelihood of heavier rainfall and potential flooding over the
interior and Gulf coast.

Another surge of deep tropical moisture will lead to an increase in
showers and thunderstorms affecting the region beginning Thursday or
Friday and lasting into the upcoming Memorial Day weekend. Main
potential impacts at this time are flooding, gusty winds and locally
rough seas, and occasional lightning strikes.

The risk of rip currents will remain elevated for the Atlantic
beaches through Wednesday, then again by Saturday.

.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.

$$

Hazardous Weather Outlook
National Weather Service Melbourne FL
713 PM EDT Mon May 21 2018

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-221030-
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-
713 PM EDT Mon May 21 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TONIGHT.

.THUNDERSTORM IMPACT...
Isolated thunderstorms may develop over the coastal waters
overnight and push onshore, mainly along the Treasure Coast. Main
threats from any of this activity will be dangerous lightning
strikes, brief gusty winds and locally heavy rainfall.

.FLOOD IMPACT...
Bands of showers and isolated storms may redevelop and move
onshore along the Treasure Coast into late tonight. This activity
will have the potential to produce localized 1 to 2 inches of rain
in a short 60 to 90 minute period. This rainfall could lead to
additional flooding of roadways and poor drainage areas,
especially from Palm City and Stuart to Port Saint Lucie, which
recently experienced heavy rainfall and flooding issues.

.WIND AND SEA IMPACT...
Southeast winds between 15 to 20 knots will generate choppy seas
of 5 to 6 feet offshore. Small craft operators should exercise
caution in these poor boating conditions.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
Scattered to numerous afternoon and evening showers and
thunderstorms are forecast to continue this week, with periods
of heavy rainfall, dangerous cloud to ground lightning strikes,
and gusty winds.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed tonight. However, storm
spotters are requested to submit rainfall reports of 2 inches or
more to the National Weather Service in Melbourne.

$$

Weitlich

Hazardous Weather Outlook
National Weather Service Key West FL
539 AM EDT Mon May 21 2018

FLZ076>078-GMZ031>035-042>044-052>055-072>075-220945-
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-
539 AM EDT Mon May 21 2018

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

.DAY ONE...TODAY AND TONIGHT

Due to an increase in winds from the east to west, a Small Craft
Advisory is in effect for all Keys coastal waters except the outer
waters of Mainland Monroe and the waters in and around Dry
Tortugas today. However, a Small Craft Advisory will be required
for our entire marine district tonight.

Otherwise, isolated to scattered thunderstorms are anticipated
along the island chain and the surrounding coastal waters today
and tonight, with the best chance for extended spells of heavy
rainfall tonight.

The primary thunderstorm hazards will be cloud to surface
lightning strikes and strong gusty winds near or above 40 mph in
the heavier cells. Stay tuned for possible marine weather
statements or possible warning issued by your National Weather
Service right here in Key West.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Isolated to scattered thunderstorms are possible along the Florida
Keys and the adjacent waters through the period. In addition,
spells of heavy rainfall are possible through most of the period.

The primary thunderstorm hazards will be cloud to surface lighting
strikes.

.SPOTTER INFORMATION STATEMENT...

$$

APA

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