Heat Advisory 2, NWS Miami, FL

756 
WWUS72 KMFL 260800 CCA
NPWMFL

URGENT - WEATHER MESSAGE...CORRECTED
National Weather Service Miami FL
400 AM EDT Wed Jul 26 2017

FLZ070-073-074-173-174-261600-
/O.COR.KMFL.HT.Y.0002.170726T1500Z-170726T2200Z/
Inland Collier-Inland Miami-Dade-Metro Miami-Dade-Coastal Miami-
Dade-Far South Miami-Dade-
Including the cities of Immokalee, Homestead, Miami, Hialeah, 
Kendall, and Miami Beach
400 AM EDT Wed Jul 26 2017

...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EDT
THIS EVENING...

The National Weather Service in Miami has issued a Heat Advisory,
which is in effect from 11 AM this morning to 6 PM EDT this
evening. 

* TEMPERATURE...heat index values will range from 105 to 110 this
  afternoon over portions of Miami-Dade and Inland Collier County.

* IMPACTS...high heat index values could lead to dehydration and 
  heat exhaustion. Drink plenty of water to stay hydrated. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take extra precautions, if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

   To reduce risk during outdoor work, the Occupational Safety
and Health Administration recommends scheduling frequent rest
breaks in shaded or air conditioned environments. Anyone overcome
by heat stroke should be moved to a cool and shaded location.  
Heat stroke is an emergency, call 9 1 1.

   A Heat Advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids, stay in an air-conditioned
room, stay out of the sun, and check up on relatives and
neighbors.

&&

$$

662 
WWUS72 KMFL 261217
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
817 AM EDT Wed Jul 26 2017

FLZ063-066>069-071-072-075-168-172-262200-
/O.EXA.KMFL.HT.Y.0002.170726T1500Z-170726T2200Z/
Glades-Hendry-Inland Palm Beach-Metro Palm Beach-Coastal Collier-
Inland Broward-Metro Broward-Mainland Monroe-Coastal Palm Beach-
Coastal Broward-
Including the cities of Palmdale, Moore Haven, Clewiston, 
Belle Glade, Wellington, Naples, Miccosukee Indian Reservation, 
Coral Springs, Sunrise, Davie, Hollywood, Pembroke Pines, 
Miramar, Jupiter, West Palm Beach, Boca Raton, Pompano Beach, 
and Fort Lauderdale
817 AM EDT Wed Jul 26 2017

...HEAT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

The National Weather Service in Miami has issued a Heat Advisory,
which is in effect until 6 PM EDT this evening. 

* TEMPERATURE...heat index values around 110 degrees. 

* IMPACTS...high heat index values could lead to dehydration and 
  heat exhaustion. Drink plenty of water to stay hydrated. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take extra precautions, if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

  To reduce risk during outdoor work, the Occupational Safety
and Health Administration recommends scheduling frequent rest
breaks in shaded or air conditioned environments. Anyone overcome
by heat stroke should be moved to a cool and shaded location.
Heat stroke is an emergency, call 9 1 1.

  A Heat Advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids, stay in an air-conditioned
room, stay out of the sun, and check up on relatives and
neighbors.

&&

$$

FLZ070-073-074-173-174-262200-
/O.CON.KMFL.HT.Y.0002.170726T1500Z-170726T2200Z/
Inland Collier-Inland Miami-Dade-Metro Miami-Dade-Coastal Miami-
Dade-Far South Miami-Dade-
Including the cities of Immokalee, Homestead, Miami, Hialeah, 
Kendall, and Miami Beach
817 AM EDT Wed Jul 26 2017

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING...

* TEMPERATURE...heat index values around 110 degrees.

* IMPACTS...high heat index values could lead to dehydration and 
  heat exhaustion. Drink plenty of water to stay hydrated. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take extra precautions, if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.

  To reduce risk during outdoor work, the Occupational Safety
and Health Administration recommends scheduling frequent rest
breaks in shaded or air conditioned environments. Anyone overcome
by heat stroke should be moved to a cool and shaded location.
Heat stroke is an emergency, call 9 1 1.

  A Heat Advisory means that a period of hot temperatures is
expected. The combination of hot temperatures and high humidity
will combine to create a situation in which heat illnesses are
possible. Drink plenty of fluids, stay in an air-conditioned
room, stay out of the sun, and check up on relatives and
neighbors.

&&

$$

505 
WWUS72 KMFL 261941
NPWMFL

URGENT - WEATHER MESSAGE
National Weather Service Miami FL
341 PM EDT Wed Jul 26 2017

FLZ063-066>075-168-172>174-262045-
/O.CAN.KMFL.HT.Y.0002.000000T0000Z-170726T2200Z/
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-
341 PM EDT Wed Jul 26 2017

...HEAT ADVISORY IS CANCELLED...

The National Weather Service in Miami has cancelled the Heat
Advisory. 

Dewpoints across South Florida have been a little drier this
afternoon, keeping heat indices below advisory criteria. However,
heat indices of 100 to 105 degrees will be possible through the 
remainder of the afternoon hours. 

$$

Area Forecast Discussion
National Weather Service Miami FL
357 AM EDT Wed Jul 26 2017

.DISCUSSION...
Today and Tonight: Subtropical ridge gradually weakens today as
a trough across the northern Gulf coast moves southeast. Ridge
will still influence the region with a light east to southeast
flow through the day. Short range models keep this 593dm ridge
over the region with above normal 850mb temperatures for today.
Combination of dewpoints ranging in the low 80s to mid 70s will
lead for another day of heat indices of 100-105F across most of
South Florida with locations over inland Collier and Miami-Dade
County could see heat indices above 108 today. East coast metro
and portion of the interior could see heat index values of above
108 to 110 for an hour during peak heating but return to around
105 for the rest of the afternoon. Therefore, a heat advisory has
been issued for Miami-Dade and Inland Collier starting mid
morning. Overnight lows will be in the mid to upper 70s with some
locations along the east coast in the lower 80s. The blended total
pwats continue around 1.9 to 2 inches over South Florida plus the
latest model sounding show pwats of 2 inches today. The available
moisture in combination with light e to se flow will lead for
both seabreeze to initiate once again this afternoon. Best chance
of showers will be over the waters early in the morning and
transition to interior with sea breeze collision in the afternoon.
The storms that do develop will then propagate and build to the
west.

Thursday and Friday: Another Saharan Airmass is expected to move
through the area. This will reinforce dry mid level airmass in place
across the area lowering the chance of rain Thursday. However, there
is still scattered showers and storms possible in the interior with
sea breezes. High temperatures will remain above normal, with highs
expected to be in the low 90s along the immediate coasts, and mid-
upper 90s for the metro areas and interior South Florida. With
dewpoints in the mid-upper 70s, heat indices both days will climb
back into the 100-108 range. Another heat advisory may be needed
Thursday for at least a portion of South Florida. Subtropical
ridge will continue to weaken towards the end of the week
allowing a more southerly wind flow to return to South Florida.
This southerly flow will bring more tropical moisture into the
region allowing more coverage of showers and storms to increase by
the end of the week into the weekend.

Next week: Upper level shortwave moving across the Great Lakes will
deepen the east coast trough, suppressing the western Atlantic high
to the south and east. Model guidance continue to show the trough
digging as far south as the FL panhandle this weekend, potentially
driving an unseasonably robust surface front by next week. Although
the front may not reach this far south, deeper mid level moisture
ahead of this system and increase in south to southwest flow over
the region will increase the chance of showers and thunderstorms
through the long term period. This southwest flow will limit the
potential for east coast sea breeze to develop.

&&

.MARINE...
Ridge extending across the Florida peninsula will keep
southeasterly winds around 10 knots through Thursday, veering
more southerly late week and southwesterly by late this weekend.
Overall speeds will remain light enough for both the Gulf and
Atlantic seabreezes to develop each afternoon, with locally higher
speeds behind the seabreezes.

Afternoon showers and storms will generally remain over the
interior, with more isolated activity over the open waters during
the nights and morning. Coverage of showers and storms expected to
increase as we head into the weekend.

&&

.AVIATION...
The winds will be light and variable through the early morning
hours at all of the taf sites before increasing to around 10
knots from the easterly direction on Tuesday afternoon. The only
exception to this is for KAPF taf site where the winds will become
westerly in the afternoon. The weather should remain mostly dry
over the east coast taf sites through this afternoon, while KAPF
taf site will see some thunderstorms in the area in the afternoon.
Therefore, VCTS will continue for KAPF taf site after 18Z this
afternoon. The ceiling and vis will also remain in VFR conditions
today.

&&

.PRELIMINARY POINT TEMPS/POPS...
West Palm Beach  93  82  94  81 /  20  10  10  20
Fort Lauderdale  92  83  93  82 /  20  10  10  30
Miami            94  82  93  82 /  30  10  20  30
Naples           94  80  93  79 /  40  30  30  30

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...Heat Advisory from 11 AM this morning to 6 PM EDT this evening
     for FLZ070-073-074-173-174.

AM...None.
GM...None.
&&

DISCUSSION...67/MT
MARINE...67/MT
AVIATION...54/BNB

Hazardous Weather Outlook for South Florida...UPDATED
National Weather Service Miami FL
907 PM EDT Tue Jul 25 2017

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
261200-
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-
907 PM EDT Tue Jul 25 2017

...A FEW THUNDERSTORMS POSSIBLE ATLANTIC WATERS TONIGHT...

This hazardous weather outlook is for South Florida.

.DAY ONE...TONIGHT

Thunderstorms: There is a slight chance of thunderstorms over the
Atlantic waters of South Florida tonight. The primary threats will
be lightning and gusty winds.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

A slight chance to low end chance of thunderstorms are possible
middle to end of this week, before increasing in coverage over all of
South Florida this weekend. Lightning, gusty wind, and torrential
rainfall will be the primary hazards from the thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed tonight.

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

Baxter