weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Hazardous Weather Outlook


Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
423 AM EDT Tue Oct 17 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
172030-
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-
423 AM EDT Tue Oct 17 2017

...MODERATE RISK OF RIP CURRENTS ALONG ATLANTIC BEACHES...
...THUNDERSTORMS POSSIBLE TODAY MAINLY OVER INTERIOR...
...COASTAL FLOODING DURING HIGH TIDES POSSIBLE MID-WEEK...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms: A few thunderstorms are possible this afternoon,
especially over interior South Florida. Lightning is the primary
threat.

Rip Currents: A moderate risk of Rip Currents will develop along the
Atlantic beaches starting today.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A cold front will stall out across Central Florida by midweek,
leading to scattered to numerous showers and thunderstorms the next
few afternoons. Cloud to ground lightning strikes will be the primary
threat.

Strong high pressure will build in behind the front late week,
leading to increasing northeasterly winds and deteriorating
conditions over the local marine areas. There will also be an
increasing risk for rip currents along Atlantic beaches.

The approach of the new moon midweek along with the increasing winds
may bring coastal flooding during high tides along the Atlantic
coast over the next several days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

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

$$

RAG

Hazardous Weather Outlook
National Weather Service Key West FL
600 AM EDT Tue Oct 17 2017

FLZ076>078-GMZ031>035-042>044-052>055-072>075-181000-
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-
600 AM EDT Tue Oct 17 2017

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

.DAY ONE...TODAY AND TONIGHT

Isolated thunderstorms are expected this afternoon and tonight
across the Florida Keys and adjacent coastal waters. The primary
thunderstorm hazard will be lightning strikes.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Isolated thunderstorms are possible along the Florida Keys and
adjacent coastal waters Wednesday through Monday. The primary
thunderstorm hazard will be lightning strikes.

A Small Craft Advisory may be required for portions of the
coastal waters of the Florida Keys Friday through Saturday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$

Kasper

Hazardous Weather Outlook
National Weather Service Melbourne FL
545 AM EDT Tue Oct 17 2017

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-172145-
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-
545 AM EDT Tue Oct 17 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
A cool front will be passing south through the forecast area
today and become nearly stationary by tonight. Scattered to
numerous showers will occur along and ahead of the front, with
additional activity expected for Volusia and northern Brevard
Counties due to a maritime wind surge approaching from the
northeast behind the front. Thunderstorms will be isolated with
occasional wind gusts to about 35 mph. Severe storms are not
expected, although locally heavy rain will be a primary concern.

.FLOOD IMPACT...
Scattered to numerous showers and isolated thunderstorms today in
vicinity of a cool front passing south through East Central
Florida today bringing periods of heavy rain. The front will
stall near South Florida by tonight. Behind the front, a surge of
maritime winds from the northeast will offer increased rain
opportunity through the day into tonight, especially along the
coast, and particularly for Volusia County and north Brevard
County where a Flood Watch is in effect. Recurring heavy rain may
produce 1 to 3 inches across the area, with local 3 to 5 inches
possible. The ground in many places is already saturated so
rainfall could turn to runoff quickly. Additional rain could also
further aggravate flooding along the Saint Johns River if any
prolonged heavy rain works its way inland. Listen for flood
warnings and be ready to act. Rapid ponding of water may also
cause significant driving hazards in the aforementioned areas.
Never drive through places where water of unknown depth covers
the road.

.RIP CURRENT IMPACT...
A northeast wind surge behind a passing cool front will offer
adverse beach conditions today, especially for Volusia and Brevard
County Beaches. The surf will become progressively rough and the
risk for rip currents will become high for Cocoa Beach north
through Daytona Beach, and moderate elsewhere southward though
the remainder of the Space and Treasure Coasts. Beach-goers are
urged to stay out of the surf today.

.MARINE THUNDERSTORM GUST IMPACT...
Scattered to numerous showers with isolated thunderstorms may
produce local convective wind gusts to 30 knots, especially in
vicinity of a passing cool front, as well as along the Volusia
and Brevard County coasts as today and tonight unfolds.

.WIND AND SEA IMPACT...
Hazardous boating conditions north of Sebastian Inlet from the
coast out to 60 nautical miles due to a passing cool front and
associated wind surge behind it. Winds will become northeast to 20
to 25 knots and build seas up to 6 to 8 feet nearshore and 8 to 10
feet offshore by tonight. South of Sebastian Inlet, seas will
build to 5 to 7 feet by tonight due to northeast wind of 15 to 20
knots.

.RIVER FLOOD IMPACT...
The middle and upper Saint Johns River basin remains in flood with
only a slight decrease in river levels forecast over the next
several days.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
Scattered to numerous showers with isolated lightning storms are
forecast across East Central Florida for Wednesday. Locally heavy
rain may occur at times, especially along the coast. Improving
conditions are then forecast for later in the week.

Boating conditions will be poor to hazardous much of the remainder
of this week due to increased winds and seas. Also, at the beaches
the surf may become rough at times. A moderate risk of rip
currents will be recurring.

.SPOTTER INFORMATION STATEMENT...
Rainfall Spotters may be needed to self activate today, especially
in Volusia and Brevard Counties.

$$

DWS

Hazardous Weather Outlook
National Weather Service Tampa Bay Ruskin FL
346 AM EDT Tue Oct 17 2017

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-
873-876-172000-
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-
346 AM EDT Tue Oct 17 2017

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

.DAY ONE...Today and Tonight.

...THUNDERSTORM IMPACT...
Scattered thunderstorms will develop today, mainly during the mid
to late afternoon hours and will linger into the evening. Gusty
winds and occasional lightning will be possible with any storms
that develop.

...MARINE IMPACTS...
High pressure building in north of the waters today will produce
breezy easterly winds, with Small Craft Exercise Caution level
winds possibly increasing to Small Craft Advisory levels by this
evening.

...RIVER FLOOD IMPACT...
Flooding continues along the Withlacoochee River at Holder and
Dunnellon. This flooding is forecast to continue through at least
the end of the week. Should any heavy rainfall occur, flooding
may worsen or be prolonged.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

...THUNDERSTORM IMPACT...
Scattered thunderstorms will be possible Wednesday and Thursday
before drier air moves in and limits rain chances Friday and
Saturday. Moisture will return by the end of the weekend, with
more scattered storms expected across the region Sunday and Monday
afternoons. Storms will be capable of producing gusty winds and
dangerous cloud to ground lightning strikes.

...MARINE IMPACTS...
Strong high pressure building in north of the waters will continue
to produce strong easterly winds throughout the week. Nocturnal
easterly wind surges will result in periods of cautionary to
advisory level winds and seas at times through late in the week.

...RIVER FLOOD IMPACT...
The Withlacoochee River at Holder and Dunnellon will remain in
flood stage through the next seven days.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

$$

Fleming

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