Special Marine Warning 21, NWS Miami, FL

507 
FZUS72 KMFL 230825
MWSMFL

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
325 AM EST MON JAN 23 2017

GMZ657-230900-
/O.CON.KMFL.MA.W.0021.000000T0000Z-170123T0900Z/
325 AM EST MON JAN 23 2017

...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 400 AM EST...

FOR THE FOLLOWING AREAS...
COASTAL WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE FL OUT 20 NM...

AT 324 AM EST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING 
WATERSPOUTS WAS LOCATED 11 NM NORTHWEST OF CORAL GABLES...MOVING 
NORTHEAST AT 45 KNOTS.

HAZARD...WATERSPOUTS AND WIND GUSTS IN EXCESS OF 50 KNOTS. 

SOURCE...RADAR INDICATED. 

IMPACT...WATERSPOUTS CAN QUICKLY FORM AND CAPSIZE BOATS...DAMAGE 
         VESSELS AND CREATE SUDDENLY HIGHER WAVES. MAKE SURE ALL ON 
         BOARD ARE IN A SECURE LOCATION AND WEARING LIFE JACKETS. 
         WATERSPOUTS CAN BECOME TORNADOES IF THEY MOVE ONSHORE. KEEP 
         ABREAST OF THE SITUATION. EXPECT WIND GUSTS IN EXCESS OF 50 
         KNOTS AND SUDDENLY HIGHER WAVES...BOATS COULD SUSTAIN 
         SIGNIFICANT DAMAGE OR CAPSIZE. MAKE SURE ALL ON BOARD ARE 
         WEARING LIFE JACKETS. 

LOCATIONS IMPACTED INCLUDE...
WHITEWATER BAY...MIDDLE CAPE SABLE AND NORTHWEST CAPE SABLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THUNDERSTORMS CAN PRODUCE SUDDEN WATERSPOUTS. WATERSPOUTS CAN EASILY
OVERTURN BOATS AND CREATE LOCALLY HAZARDOUS SEAS. SEEK SAFE HARBOR
IMMEDIATELY.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM EST FOR SOUTHWESTERN
FLORIDA.

LAT...LON 2511 8137 2528 8124 2541 8106 2521 8086
      2518 8087 2516 8091 2516 8101 2513 8101
TIME...MOT...LOC 0824Z 235DEG 92KT 2587 8038 

WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...50KTS

$$

67

Area Forecast Discussion
National Weather Service Miami FL
217 AM EST Mon Jan 23 2017

...TORNADO WATCH 24 IN EFFECT UNTIL 6 AM EST THIS MORNING...
...WIND ADVISORY FOR ALL OF SOUTH FLORIDA TODAY...
...VERY ROUGH MARINE CONDITIONS TODAY...
...HIGH RISK OF RIP CURRENTS WEST COAST BEACHES...

.DISCUSSION...

.TODAY THROUGH TUESDAY...
The line of showers and thunderstorms extended from Palm Beach
County southwest to near Everglades City early this morning. The
line will continue to move quickly to the southeast through the
east coast metro areas of South Florida through early this
morning, and should be over the Atlantic waters by sunrise today.
Tornado watch 24 is still in effect until 6 AM EST this morning.

The strong upper level trough along with a surface low will
continue to move east from the Southeastern United States early
this morning into the Mid Atlantic States by Tuesday. This will
keep the windy westerly winds ongoing over South Florida today
before slowly decreasing tonight into Tuesday. Therefore, a Wind
Advisory will be added for the interior areas of South Florida
today, as the Wind Advisory has been extended for the metro
areas today.

Scattered showers and a few thunderstorms are still possible over
South Florida this morning, before drier and cooler weather work
into the area from the north for this afternoon into Tuesday. Any
storms that do affect South Florida later this morning will be
below severe limits, as the mid to low level jet will be well east
of South Florida.

WEDNESDAY THROUGH FRIDAY...
High pressure will move from the Gulf Of Mexico through South
Florida and into the Atlantic waters on Wednesday into Thursday.
Another cold front will then move southward and through South
Florida late Thursday night before stalling out over the Florida
keys on Friday. This front will be mostly a dry front with only a
slight chance of showers over the Atlantic Waters.

EXTENDED FORECAST...
The front will then move back northward into South Florida this
weekend, as a mid to upper level disturbance moves from the Gulf
of Mexico eastward across South Florida late this weekend.
This will allow for isolated to scattered showers to develop over
the area late this weekend. Temperatures this weekend upper 60s to
lower 70s for highs with lows in the 50s to 60s, except mid to
upper 40s west of Lake Okeechobee.

&&

.MARINE...
The southwest winds 25 to 30 knots with gusts into gale force
conditions will swing to a westerly direction by sunrise and
remain westerly through today. The only exception to this is over
Biscayne Bay and Lake Okeechobee where the wind gusts will fall
below gale force by afternoon. Therefore, the Gale Warning will
remain in place for all of South Florida waters today, except for
Lake Okeechobee and Biscayne Bay where the Gale Warning will be
replace with an SCA for the afternoon hours.

The winds will then decrease tonight and be below 20 knots by
Tuesday. However, the seas will take some time to subside over the
Gulf and Atlantic waters. The seas will be up to 8 to 10 feet in
the Atlantic waters today into Tonight below slowly decreasing to
less than 7 feet by Tuesday afternoon. For the Gulf side the seas
will be up to 15 to 17 feet in the offshore waters today before
slowly subsiding to less than 7 feet by Tuesday afternoon.
Therefore, the SCA conditions will continue for the Atlantic and
Gulf waters tonight into Tuesday morning.

&&

.BEACH FORECAST...
The westerly winds will keep the High Risk of Rip Currents going
for the west coast beaches of South Florida through Tuesday.

&&

.FIRE WEATHER...
The relative humidity over South Florida will fall into the mid to
upper 30s over the east coast metro areas on Tuesday, but the
20 foot winds will be less than 15 mph, and the ERC will be less
than 35. Therefore, no fire weather threat for South Florida for
Tuesday.

&&

.PRELIMINARY POINT TEMPS/POPS...
West Palm Beach  77  55  76  55 /  40   0   0   0
Fort Lauderdale  77  56  76  57 /  40   0   0   0
Miami            78  59  78  58 /  40   0   0   0
Naples           74  59  74  53 /  50   0   0   0

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...Wind Advisory from 8 AM this morning to 7 PM EST this evening
     for FLZ063-066>075-168-172>174.

     Wind Advisory until 7 AM EST this morning for FLZ069-168-172-173.

     High Rip Current Risk through Tuesday evening for FLZ069.

AM...Small Craft Advisory from 11 PM this evening to 1 PM EST Tuesday
     for AMZ650-651-670-671.

     Gale Warning until 11 PM EST this evening for AMZ650-651-670-671.

     Small Craft Advisory from 1 PM this afternoon to 7 AM EST
     Tuesday for AMZ610-630.

     Gale Warning until 1 PM EST this afternoon for AMZ610-630.

GM...Small Craft Advisory from 11 PM this evening to 1 PM EST Tuesday
     for GMZ656-657-676.

     Gale Warning until 11 PM EST this evening for GMZ656-657-676.

&&

DISCUSSION...54/BNB
MARINE...54/BNB
BEACH FORECAST...54/BNB
FIRE WEATHER...54/BNB

HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA...UPDATED
NATIONAL WEATHER SERVICE MIAMI FL
1003 PM EST SUN JAN 22 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
231100-
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-
1003 PM EST SUN JAN 22 2017

...TORNADO WATCH 24 IS IN EFFECT UNTIL EARLY MONDAY MORNING...
...HIGH RISK OF RIP CURRENTS WEST COAST BEACHES OF SOUTH FLORIDA...
...DANGEROUS MARINE CONDITIONS DEVELOPING TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TONIGHT

THUNDERSTORMS: SHOWERS AND THUNDERSTORMS WILL OVERSPREAD SOUTH
FLORIDA AHEAD OF A STRONG COLD FRONT. THERE IS A POTENTIAL FOR
STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON, EVENING, AND
OVERNIGHT. THE MAIN THREATS EXPECTED ARE DAMAGING WIND GUSTS,
FREQUENT LIGHTNING STRIKES, HAIL AND ISOLATED TORNADOES.

TORNADOES: ISOLATED TORNADOES MAY DEVELOP WITH THUNDERSTORMS ACROSS
THE REGION LATER THIS AFTERNOON AND OVERNIGHT. WATERSPOUTS ARE
POSSIBLE WITH ANY SHOWER AND THUNDERSTORM ACTIVITY THAT DEVELOPS
TODAY.

WIND: THERE IS A WIND ADVISORY IN EFFECT FOR ALL SOUTH FLORIDA
TODAY. WINDS ARE EXPECTED TO INCREASE BETWEEN 20 TO 25 MPH THIS
AFTERNOON WITH GUSTS TO AROUND 35 MPH. THERE IS ALSO A POTENTIAL FOR
THUNDERSTORMS LATER THIS AFTERNOON, EVENING, AND OVERNIGHT TO
PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.

HAIL: HAIL UP TO THE SIZE OF QUARTER DOLLARS IS POSSIBLE WITH STRONG
THUNDERSTORMS THAT DEVELOP LATER THIS AFTERNOON, EVENING, AND
OVERNIGHT.

FLOODING: MINOR FLOODING IS POSSIBLE WITH HEAVIER SHOWERS AND STORMS
LEADING TO PONDING OF WATER IN POORLY DRAINED AREAS OVER THE EAST
COAST AND GULF COAST METRO AREAS. MINOR COASTAL FLOODING IS
POSSIBLE ALONG THE GULF COAST AROUND THE TIMES OF HIGH TIDE.

RIP CURRENTS: THERE IS A HIGH RISK OF RIP CURRENTS FOR THE GULF COAST
BEACHES. FOR THE ATLANTIC BEACHES, A MORE MODERATE RISK OF RIP
CURRENTS IS EXPECTED TODAY.

WAVES: SEAS BUILDING TO 10 TO 12 FEET IN THE OFFSHORE ATLANTIC AND
10 TO 16 FEET IN THE GULF LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

STRONG WEST WIND BEHIND THE FRONT WILL CONTINUE TO LEAD TO HAZARDOUS
MARINE CONDITIONS ACROSS SOUTH FLORIDA WATERS THROUGH TUESDAY. RIP
CURRENTS WILL BE POSSIBLE ALONG BOTH THE ATLANTIC AND GULF COASTS
THROUGH TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED TONIGHT. INDIVIDUAL SPOTTERS ARE
ENCOURAGED TO REPORT HIGH WIND, HAIL AND 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.

BAXTER

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
218 AM EST MON JAN 23 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0138 AM     TSTM WND GST     3 NE COCONUT CREEK      26.30N  80.15W
01/23/2017  M56 MPH          BROWARD            FL   MESONET

            A WIND GUST OF 56 MPH WAS MEASURED AT DEERFIELD BEACH
            CODE ENFORCEMENT AT 138 AM

&&

EVENT NUMBER MFL1700042

HAGEN

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE MIAMI FL
219 AM EST MON JAN 23 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0138 AM     NON-TSTM WND GST 3 NE COCONUT CREEK      26.30N  80.15W
01/23/2017  M56 MPH          BROWARD            FL   MESONET

            A WIND GUST OF 56 MPH WAS MEASURED AT DEERFIELD BEACH
            CODE ENFORCEMENT AT 138 AM

&&

CORRECTED EVENT

EVENT NUMBER MFL1700042

HAGEN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Miami FL
248 AM EST MON JAN 23 2017

FLZ067-068-070>075-168-172>174-230915-
Inland Broward County FL-Coastal Broward County FL-
Coastal Palm Beach County FL-Inland Collier County FL-
Mainland Monroe FL-Metro Broward County FL-
Metropolitan Miami Dade FL-Far South Miami-Dade County FL-
Inland Palm Beach County FL-Inland Miami-Dade County FL-
Metro Palm Beach County FL-Coastal Miami Dade County FL-
248 AM EST MON JAN 23 2017

...Significant Weather Advisory for frequent to excessive lightning,
small hail, up to 55 mph winds and the development of funnel clouds
for southeastern Collier...Mainland Monroe...Miami-Dade...Broward
and southeastern Palm Beach Counties Until 415 AM EST...

* At 247 AM EST...Doppler radar was tracking a line of strong
  thunderstorms with rotation, Capable of producing a funnel cloud
  along a line extending from Parkland to 6 miles east of Wilderness
  Waterway...and moving southeast at 45 mph.

* In addition, frequent to excessive lightning, gusty winds up to 55
  mph, small hail, torrential downpours, or a combination of these
  are possible. Lightning is the number one weather related killer
  in Florida. Trees and open shelters offer no protection.
  These winds can down small tree limbs and branches, and blow around
  unsecured small objects. Seek shelter in a safe building until the
  storm passes.

* LOCATIONS IMPACTED INCLUDE...
  Miami, Hialeah, Fort Lauderdale, Pembroke Pines, Hollywood,
  Miramar, Coral Springs, West Palm Beach, Pompano Beach, Davie,
  Miami Beach, Plantation, Sunrise, Boca Raton, Deerfield Beach,
  Boynton Beach, Delray Beach, Homestead, Tamarac and Wellington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This activity was also developing in an environment favorable for the
formation of funnel clouds. Stay tuned to NOAA weather radio and
local media for additional updates and possible warnings.

&&

A tornado watch remains in effect until 600 AM EST for southeastern
and southwestern Florida.

LAT...LON 2566 8008 2560 8013 2553 8010 2530 8021
      2535 8027 2520 8050 2522 8057 2523 8054
      2523 8052 2524 8053 2523 8059 2514 8067
      2516 8066 2516 8068 2514 8078 2518 8081
      2514 8090 2562 8132 2689 8004
TIME...MOT...LOC 0747Z 318DEG 21KT 2629 8025 2565 8105

67

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Miami FL
249 AM EST MON JAN 23 2017

FLZ073-075-230815-
Mainland Monroe FL-Inland Miami-Dade County FL-
249 AM EST MON JAN 23 2017

...Significant Weather Advisory for the development of funnel clouds
for northeastern Mainland Monroe and west central Miami-Dade Counties
Until 315 AM EST...

* At 248 AM EST...Doppler radar was tracking a strong thunderstorm
  with rotation, Capable of producing a funnel cloud near Loop Road
  Ee Center, or 24 miles southeast of Chokoloskee, moving northeast
  at 50 mph.

* LOCATIONS IMPACTED INCLUDE...
  Loop Road Ee Center and Fortymile Bend.

A tornado watch remains in effect until 600 AM EST for southeastern
and southwestern Florida.

LAT...LON 2568 8111 2577 8099 2580 8094 2581 8081
      2569 8073 2553 8100
TIME...MOT...LOC 0748Z 238DEG 45KT 2565 8099

KScharf

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
256 AM EST MON JAN 23 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0236 AM     TSTM WND GST     3 W DEERFIELD BEACH     26.31N  80.15W
01/23/2017  M55 MPH          BROWARD            FL   MESONET

            WIND GUST 55 MPH MEASURED AT DEERFIELD BEACH CODE
            ENFORCEMENT

&&

EVENT NUMBER MFL1700043

HAGEN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
257 AM EST MON JAN 23 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0240 AM     TSTM WND GST     3 WSW DELRAY BEACH      26.44N  80.13W
01/23/2017  M55 MPH          PALM BEACH         FL   MESONET

            WIND GUST OF 55 MPH MEASURED AT DELRAY BEACH MEDICAL
            CENTER

&&

EVENT NUMBER MFL1700044

HAGEN