Alert archive / Florida / Flash Flood Warnings in 2019

Flash Flood Warning 5, NWS Miami, FL

August 15, 2019Miami-Dade County, Florida

NWS Miami, FL issued this flash flood warning at Aug 15, 2019, 2:17 PM EDT for Miami-Dade County, Florida. It was in force for 3 hr. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 15, 2019, 2:17 PM EDT (18:17 UTC)
Expired
Aug 15, 2019, 5:15 PM EDT
In force
3 hr
Issued by
NWS Miami, FL
Area
Storm-based polygon
Flood severity
None

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 4 km from the middle of the area, began a volume at 18:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 15, 2:48 PM EDTHEAVY RAIN 53 Wnw Howard, FLMEASURED RAINFALL OF 5 INCHES ASSOCIATED WITH A THUNDERSTORM LOCATED NEAR THE INTERSECTION OF SW 112TH STREET AND SW 117 AVE.
Aug 15, 3:30 PM EDTFLASH FLOOD2 Wnw Howard, FLHEAVY RAINFALL FROM A THUNDERSTORM HAS PRODUCED FLASH FLOODING RESULTING IN WATER APPROACHING AND REACHING THE BASES OF WAREHOUSES IN THE AREA JUST EAST OF THE FLORIDA TURNPIKE AND SW 120TH STREET.
Aug 15, 4:35 PM EDTFLASH FLOOD3 Nw Howard, FLMULTIPLE MEDIA REPORTS OF FLOODING WITH IMPASSABLE ROADWAYS. THIS IS OCCURING IN THE AREA OF 117TH AVENUE BETWEEN 102TH AND 120TH STREET
Aug 15, 5:09 PM EDTFLASH FLOOD2 Wnw Howard, FLHEAVY RAINFALL HAS LEAD TO FLASH FLOODING WITH WATER COMING UP TO AND ENTERING SOME STRUCTURES NEAR 114 AVE AND 128TH STREET. MULTIPLE MEDIA REPORTS OF FLOODING STILL ONGOING IN THE AREA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this flash flood warning; the first came 73 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 6.3 hours before the alert went out and 22 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2019-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1528 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2019-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1528 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
945 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

967 
WGUS52 KMFL 151817
FFWMFL
FLC086-152115-
/O.NEW.KMFL.FF.W.0005.190815T1817Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Miami FL
217 PM EDT Thu Aug 15 2019

The National Weather Service in Miami has issued a

* Flash Flood Warning for...
  Miami-Dade County in southeastern Florida...

* Until 515 PM EDT.

* At 216 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to three inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Kendall, Richmond West, Richmond Heights, Country Walk and West
  Kendall.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
8 follow-up statements
794 
WGUS72 KMFL 151834
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
234 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
234 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 233 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Up to three inches of rain have already
fallen. Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
139 
WGUS72 KMFL 151844
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
244 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
244 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 242 PM EDT, trained weather spotters reported thunderstorms 
producing heavy rain in Kendall. Up to 5 inches of rain have fallen. 
Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
326 
WGUS72 KMFL 151858
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
258 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
258 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 256 PM EDT, trained weather spotters reported thunderstorms 
producing heavy rain in Kendall where up to 5 inches of rain have 
fallen. Rainfall accumulations of 2 to 3 inches have been reported 
from automated rain gauges elsewhere across the warning area. Flash 
flooding is expected to begin shortly.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
913 
WGUS72 KMFL 151912
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
312 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
312 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 310 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Upwards of 5 inches of rain have fallen 
based on a trained spotter report in Kendall, with automated rain 
gauges indicating 2 to 3 inches of rain having fallen elsewhere 
across the Flash Flood Warning area. Flash flooding is expected to 
begin shortly.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

Additional rainfall amounts of 1 to 2 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
284 
WGUS72 KMFL 151921
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
321 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
321 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 320 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. A trained spotter reports 7 inches of 
rain have fallen in the Kendall area. Elsewhere across the warning 
area, 2 to 3 inches of rain have been reported by automated rain 
gauges. Street flooding in neighborhoods in the Kendall area has 
been reported. Additional flooding, including flash flooding, is 
likely to develop.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

Additional rainfall amounts of 2 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
484 
WGUS72 KMFL 151925
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
325 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
325 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 324 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. A trained spotter reports 7 inches of 
rain have fallen in the Kendall area. In Richmond Heights, around 
5.5 inches of rain have been reported from an automated rain gauge. 
Elsewhere across the warning area, 3 to 5 inches of rain have been 
reported by automated rain gauges. Street flooding in neighborhoods 
in the Kendall area is ongoing. Additional flooding, including flash 
flooding, is likely to develop.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

Additional rainfall amounts of 1 to 3 inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
059 
WGUS72 KMFL 151940
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
340 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
340 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 336 PM EDT, flood waters are approaching the bases of warehouses 
in the Kendall area. Flooding is being observed around the Florida 
Turnpike in the vicinity of Southwest 120th Street.

Doppler radar indicated showers and thunderstorms continuing to 
produce heavy rain across the warned area.

A trained spotter reports 7.7 inches of rain have fallen in the 
Kendall area. In Richmond Heights, around 5.5 inches of rain have 
been reported from an automated rain gauge. Elsewhere across the 
warning area, 3 to 5 inches of rain have been reported by automated 
rain gauges. Additional flooding, including flash flooding, is 
likely to develop.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

Additional rainfall amounts of 1 to locally 2 inches are possible in 
the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen
432 
WGUS72 KMFL 152007
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
407 PM EDT Thu Aug 15 2019

FLC086-152115-
/O.CON.KMFL.FF.W.0005.000000T0000Z-190815T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
407 PM EDT Thu Aug 15 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
MIAMI-DADE COUNTY...

At 406 PM EDT, Doppler radar indicates that rain has mostly ended 
across the Flash Flood Warning area. However, flooding continues 
across the Warning area. As a result, the Flash Flood Warning 
remains in effect.

Within the past hour, flood waters were approaching the bases of 
warehouses in the Kendall area. Flooding was being observed around 
the Florida Turnpike in the vicinity of Southwest 120th Street.

A trained spotter reported that 7.7 inches of rain had fallen in the 
Kendall area. In Richmond Heights, around 5.5 inches of rain have 
been reported from an automated rain gauge. Elsewhere across the 
warning area, 3 to 5 inches of rain have been reported based on 
automated rain gauges.

Some locations that will experience flooding include...
Kendall, Richmond West, Richmond Heights, Country Walk and West
Kendall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 2564 8035 2561 8038 2559 8046 2566 8046
      2570 8041 2569 8035

$$

Cohen

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this flash flood warning went out at Aug 15, 2:04 PM EDT, 13 minutes earlier.

Area forecast discussion, Aug 15, 2:04 PM EDT, 13 minutes before
Area Forecast Discussion
National Weather Service Miami FL
204 PM EDT Thu Aug 15 2019

.AVIATION...
TSRA/SHRA continues across S FL this afternoon bringing gusty
winds, localized heavy rain, and MVFR CIGS. Storm coverage is
increasing over the interior and east coast metros while SHRA
continues over the Gulf waters. Convection is expected to slowly
taper off by 20Z and VFR cond. are expected overnight. Not enough
certainty in timing of convection for tmrw afternoon to include in
this package but may need to be added in at a later time.

&&

.PREV DISCUSSION... /issued 1043 AM EDT Thu Aug 15 2019/

UPDATE...
Another round of showers and thunderstorms is expected across
South Florida today, with the greatest coverage expected across
the interior and east coast metro areas this afternoon. A Flood
Watch remains in effect for coastal/metro Palm Beach, Broward, and
Miami-Dade counties through 8 PM this evening. Soil moisture
remains very high due to recent heavy rainfall across the watch
area, resulting in flash flood guidance of around 2 to 4 inches in
an hour. These rain rates will be possible with slow-moving
thunderstorms today. Activity should taper off during the evening
hours.

PREV DISCUSSION... /issued 338 AM EDT Thu Aug 15 2019/

DISCUSSION...
Scattered showers and thunderstorms will continue to develop over
the local waters early this morning. As Thursday progresses, a south
to southwesterly wind flow across South Florida will continue. This
is due to the mid level trough located over the eastern portion of
the country. This wind flow will allow for the abundant amount of
moisture to remain in place as well with PWAT values remaining
around 2 inches. Scattered to numerous showers and thunderstorms
will develop along the sea breezes and the greatest coverage will
once again remain over the interior and east coast areas. The threat
of heavy rainfall will continue throughout the day on Thursday. With
the ground saturated across the east coast, there will be the
possibility of additional flooding in the low lying and poor
drainage areas. Therefore the flood watch that is in effect across
the east coast metro areas will continue through Thursday
evening. This weather pattern will also remain in place on Friday
as the south to southwesterly flow will continue. There will still
be plenty of moisture in place to continue to support shower and
thunderstorm activity. The latest model soundings continue to show
500 mb temperatures cooling a bit to -8C which could help to
support some strong thunderstorm development especially across
the interior and east coast sections. The threat for heavy
rainfall will continue to be present as well throughout the day on
Friday due to the deep low level moisture remaining in place.

During the upcoming weekend, both of the latest GFS and the ECMWF
show the mid level trough moving off the eastern seaboard. This will
allow a ridge of high pressure currently located over the central
portion of the country to move eastward. The wind flow will shift
around to a more south southeasterly direction and a slightly
drier air mass will begin to move into South Florida. Shower and
thunderstorm development will still be possible, but due to the
south southeasterly wind flow, this will help to shift the
greatest coverage of showers and thunderstorms over the interior
and Lake Okeechobee region.

Early next week the south southeasterly wind flow will continue.
At the same time, both of the GFS and the ECMWF show some
additional tropical moisture trying to work into the area during
the early to middle portion of next week. This could lead to
another increased chance in shower and thunderstorm activity
during this time frame. This will continue to be monitored as the
week progresses.

MARINE...
The south to southwesterly flow will continue across the Atlantic
and Gulf coastal waters through the rest of the work week. An area
of high pressure will then shift the winds around to a south to
southeasterly direction during the upcoming weekend. Seas will
remain at 2 feet or less through the weekend across the local
waters. Scattered showers and thunderstorms are possible each day.
Winds and waves will be higher in and around any shower or
thunderstorm.
&&

.PRELIMINARY POINT TEMPS/POPS...
West Palm Beach  77  92  77  92 /  30  30  20  50
Fort Lauderdale  78  90  79  91 /  20  30  20  50
Miami            78  92  79  92 /  20  30  20  50
Naples           78  90  76  90 /  30  40  20  70

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...Flood Watch until 8 PM EDT this evening for FLZ068-072-074-168-
     172-173.

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

UPDATE...32/MM
DISCUSSION...55/CWC
MARINE...55/CWC
AVIATION...18/Weinman & 32/MM
Hazardous weather outlook, Aug 15, 10:48 AM EDT, 3 hours 29 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
1048 AM EDT Thu Aug 15 2019

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
160300-
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-
1048 AM EDT Thu Aug 15 2019

...Numerous Storms and Heavy Rainfall Expected Again Today...
...Flood Watch in Effect for East Coast Metro...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Flooding: Saturated ground across much of South Florida will mean
any thunderstorms that produces heavy rain will bring the threat for
at least minor flooding of streets and poor drainage areas across
all of South Florida. There is a more significant threat along the
east coast metro due to an ongoing extended period of heavy rainfall.
Here, more substantial flooding of roads and low lying areas are
possible. A Flood Watch is in effect for the east coast metro through
at least this evening.

Thunderstorms: Thunderstorms will begin to develop over the interior
and east coast sea breeze early afternoon and continue into the
early evening hours. Thunderstorms will be capable of producing
heavy rain, strong winds, and frequent lightning.

Waterspouts: Isolated waterspouts are possible across all South
Florida waters.

Wind: The strongest thunderstorms today will be capable of producing
wind gusts of up to 50 mph.

Temperatures: Warm and humid conditions will continue to produce
late morning and early afternoon heat index readings near 100
degrees for all of South Florida. Portions of South Florida,
especially across Collier and Palm Beach counties will see the
highest values reach 105 to 108 degrees for an hour or two around
midday.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Scattered to numerous thunderstorms are expected each day through
the period across South Florida. The highest coverage of storms is
expected to shift more across the interior and Lake region by this
weekend. Frequent lightning, heavy rain capable of producing
localized flooding, and gusty winds will continue to be the main
hazards.

Heat indices may reach around 100 to 108 degrees each afternoon
through the period.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however individual
spotters are encouraged to report high winds 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.

In the hours before

Special weather statement, Aug 15, 12:51 PM EDT, 1 hour 26 minutes before
Special Weather Statement
National Weather Service Miami FL
1251 PM EDT Thu Aug 15 2019

FLZ072>074-172-173-151745-
Coastal Broward County FL-Metro Broward County FL-
Metropolitan Miami Dade FL-Inland Miami-Dade County FL-
Coastal Miami Dade County FL-
1251 PM EDT Thu Aug 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MIAMI-DADE AND SOUTHERN
BROWARD COUNTIES UNTIL 145 PM EDT...

* At 1251 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms with very heavy rain developing
  along a line extending from Nova Southeastern University to near
  Doral to Richmond West. Movement was north at 5 mph.

* Winds in excess of 45 mph and funnel clouds possible with these
  storms.

* Locations impacted include...
  Miami, Hialeah, Fort Lauderdale, Pembroke Pines, Hollywood,
  Miramar, Davie, Plantation, Sunrise, Coral Gables, South Miami,
  Miami Gardens, Kendall, The Redland, Hallandale, Lauderhill, North
  Miami, Doral, North Miami Beach and Oakland Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms. If
you can hear thunder, you are close enough to be struck! Seek a safe
shelter inside a building or vehicle.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2605 8014 2556 8035 2555 8047 2569 8049
      2609 8033 2618 8022 2618 8011
TIME...MOT...LOC 1651Z 198DEG 5KT 2608 8025 2581 8040 2560 8045

Cohen
Special weather statement, Aug 15, 1:45 PM EDT, 32 minutes before
Special Weather Statement
National Weather Service Miami FL
145 PM EDT Thu Aug 15 2019

FLZ072-172-151815-
Coastal Broward County FL-Metro Broward County FL-
145 PM EDT Thu Aug 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN BROWARD COUNTY UNTIL 215
PM EDT...

* At 144 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm over West Park, or near Pembroke
  Pines, moving northeast at 10 mph.

* Winds in excess of 45 mph and funnel clouds possible with this
  storm.

* Locations impacted include...
  Fort Lauderdale, Pembroke Pines, Hollywood, Miramar, Davie,
  Plantation, Sunrise, Hallandale, Miami Gardens, Lauderhill, Weston,
  Aventura, Dania Beach, Cooper City, West Park, Royal Palm Ranches,
  Ravenswood Estates, St. George, Sunshine Acres and Estates Of Fort
  Lauderdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2597 8029 2596 8030 2596 8042 2603 8043
      2614 8042 2614 8013 2597 8013
TIME...MOT...LOC 1744Z 219DEG 10KT 2599 8029

Cohen
Special weather statement, Aug 15, 1:49 PM EDT, 28 minutes before
Special Weather Statement
National Weather Service Miami FL
149 PM EDT Thu Aug 15 2019

FLZ066-067-070-071-151830-
Inland Broward County FL-Hendry FL-Inland Collier County FL-
Inland Palm Beach County FL-
149 PM EDT Thu Aug 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL COLLIER...
SOUTHEASTERN HENDRY AND NORTHERN BROWARD COUNTIES UNTIL 230 PM EDT...

* At 148 PM EDT, Doppler radar was tracking a strong thunderstorm
  over Miccosukee Indian Reservation, or 35 miles northeast of
  Chokoloskee, moving northeast at 10 mph.

* Winds in excess of 45 mph possible with this storm.

* Locations impacted include...
  Miccosukee Indian Reservation, Big Cypress Seminole Reservation,
  Miccosukee Service Plaza, Big Cypress National Preserve and West
  Broward Rec. Area On Alligator Alley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2601 8089 2611 8110 2642 8098 2623 8059
TIME...MOT...LOC 1748Z 216DEG 10KT 2613 8089

MM
Special weather statement, Aug 15, 1:57 PM EDT, 20 minutes before
Special Weather Statement
National Weather Service Miami FL
157 PM EDT Thu Aug 15 2019

FLZ067-151845-
Inland Palm Beach County FL-
157 PM EDT Thu Aug 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PALM BEACH COUNTY
UNTIL 245 PM EDT...

* At 157 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms along a line extending from 6 miles
  southwest of Indiantown to Belle Glade Camp. These storms were
  nearly stationary.

* Winds in excess of 45 mph and funnel clouds possible with these
  storms.

* Locations impacted include...
  Belle Glade, Pahokee, South Bay, Canal Point, Belle Glade Camp and
  Fremd Village-Padgett Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2660 8057 2660 8068 2665 8074 2681 8067
      2689 8062 2696 8060 2696 8045
TIME...MOT...LOC 1757Z 254DEG 4KT 2699 8056 2667 8068

Cohen
Special weather statement, Aug 15, 2:12 PM EDT, 5 minutes before
Special Weather Statement
National Weather Service Miami FL
212 PM EDT Thu Aug 15 2019

FLZ070-073-075-174-151900-
Inland Collier County FL-Mainland Monroe FL-Far South Miami-
Dade County FL-Inland Miami-Dade County FL-
212 PM EDT Thu Aug 15 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN COLLIER...MAINLAND
MONROE AND NORTHERN MIAMI-DADE COUNTIES UNTIL 300 PM EDT...

* At 211 PM EDT, Doppler radar was tracking a strong thunderstorm 9
  miles southwest of Shark Valley Obs Tower, or 19 miles west of
  Homestead General Airport, moving northeast at 5 mph.

* Winds in excess of 45 mph possible with this storm.

* Locations impacted include...
  Shark Valley Obs Tower, Loop Road Ee Center, Dade-Collier Training
  Airport, Fortymile Bend and Big Cypress National Preserve.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

To report severe weather, contact your nearest law enforcement
agency. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2526 8091 2535 8116 2595 8108 2575 8057
TIME...MOT...LOC 1811Z 202DEG 5KT 2556 8086

MM

The office that day

Everything else NWS Miami, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 15, 12:51 PM EDTSpecial Weather StatementMFLMiami-Dade54 min
Aug 15, 1:15 PM EDTAreal Flood AdvisoryMFLMiami-Dade2 hr
Aug 15, 1:45 PM EDTSpecial Weather StatementMFLBroward30 min
Aug 15, 1:49 PM EDTSpecial Weather StatementMFLBroward41 min
Aug 15, 1:57 PM EDTSpecial Weather StatementMFLPalm Beach48 min
Aug 15, 2:12 PM EDTSpecial Weather StatementMFLMonroe48 min
Aug 15, 2:20 PM EDTAreal Flood AdvisoryMFLPalm Beach3 hr
Aug 15, 2:20 PM EDTSpecial Weather StatementMFLHendry40 min
Aug 15, 2:39 PM EDTSpecial Weather StatementMFLMiami-Dade51 min
Aug 15, 2:50 PM EDTSpecial Weather StatementMFLBroward, Hendry, Palm Beach55 min
Aug 15, 2:53 PM EDTSpecial Weather StatementMFLMiami-Dade, Monroe52 min
Aug 15, 2:54 PM EDTAreal Flood AdvisoryMFLMiami-Dade2 hr
Aug 15, 3:44 PM EDTSpecial Weather StatementMFLCollier46 min
Aug 15, 3:45 PM EDTSpecial Weather StatementMFLMonroe45 min
Aug 15, 3:46 PM EDTSpecial Weather StatementMFLPalm Beach44 min
Aug 15, 4:20 PM EDTSpecial Weather StatementMFLPalm Beach40 min
Aug 15, 4:21 PM EDTSpecial Weather StatementMFLBroward39 min
Aug 15, 4:34 PM EDTSpecial Marine WarningMFL42 min
Aug 15, 4:39 PM EDTSpecial Weather StatementMFLCollier51 min
Aug 15, 4:40 PM EDTSpecial Marine WarningMFL35 min
Aug 15, 5:14 PM EDTAreal Flood WarningMFLMiami-Dade3 hr
Aug 15, 5:34 PM EDTAreal Flood AdvisoryMFLCollier, Hendry3 hr

Nearby

Flash Flood Warnings in Florida, 2019Every flash flood warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.