Alert archive / Florida / Flash Flood Warnings in 2021

Flash Flood Warning 10, NWS Miami, FL

September 2, 2021Miami-Dade County, Florida

NWS Miami, FL issued this flash flood warning at Sep 2, 2021, 2:44 PM EDT for Miami-Dade County, Florida. It was in force for 5 hr. 3 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
Sep 2, 2021, 2:44 PM EDT (18:44 UTC)
Expired
Sep 2, 2021, 8:00 PM EDT
In force
5 hr
Issued by
NWS Miami, FL
Area
Storm-based polygon
Flood severity
None

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 26 km from the middle of the area, began a volume at 18:48 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
Sep 2, 2:45 PM EDTFLOOD2 W Miami, FLVIDEO FROM TWITTER OF WATER COVERING THE RIGHT LANE OF NW 27 AVENUE JUST NORTH OF FLAGLER STREET. WATER EXTENDED PAST THE CURB AND COVERING THE ADJACENT SIDEWALK AND BUS STOP.
Sep 2, 3:05 PM EDTFLOOD2 Wnw Miami, FLREPORT FROM FLORIDA 511 OF FLOODING ON SR 836 WESTBOUND BLOCKING TWO RIGHT LANES.
Sep 2, 3:15 PM EDTFLOODMiami, FLOFF-DUTY NWS METEOROLOGIST REPORTS STANDING WATER AT KNEE LEVEL (AROUND ONE FOOT DEEP) NEAR MARY BRICKELL VILLAGE AND ADJACENT LOCATIONS. RAINFALL OBSERVATIONS FROM THE GENERAL AREA INDICATED ABOUT 3 INCHES OF RAIN.

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

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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, 6.7 hours before the alert went out and 8 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 2021-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 665 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2021-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 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
665 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1082 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

738 
WGUS52 KMFL 021844
FFWMFL
FLC086-022145-
/O.NEW.KMFL.FF.W.0010.210902T1844Z-210902T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Miami FL
244 PM EDT Thu Sep 2 2021

The National Weather Service in Miami has issued a

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

* Until 545 PM EDT.

* At 244 PM EDT, Doppler radar indicated nearly stationary 
  thunderstorms producing heavy rain across the warned area. Between 
  3 and 6 inches of rain have fallen hour or so. Additional rainfall 
  amounts of 1 to 3 inches are possible in the warned area. Flash 
  flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Miami, Marlins Park, Downtown Miami and Allapattah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

Please report flooding to your local law enforcement agency when you 
can do so safely.

&&

LAT...LON 2575 8025 2582 8025 2582 8018 2574 8019

FLASH FLOOD...RADAR INDICATED

$$

BAXTER
5 follow-up statements
087 
WGUS72 KMFL 021912
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
312 PM EDT Thu Sep 2 2021

FLC086-022145-
/O.CON.KMFL.FF.W.0010.000000T0000Z-210902T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
312 PM EDT Thu Sep 2 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT THIS 
AFTERNOON FOR NORTHERN MIAMI-DADE COUNTY...

At 312 PM EDT, Doppler radar indicated that the thunderstorms have 
moved east of the warning area which has produced between 3 and 7 
inches of rainfall during the last couple of hours. Another area of 
heavy showers to the west is moving east into the Flash Flood 
Warning area that could produce another half an inch to one inch of 
rainfall. Therefore, the Flash Flood Warning remains in effect until 
545 PM EDT this afternoon for Northern Miami-Dade County.

Additional rainfall amounts up to 1 inch are possible in the warned 
area. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Miami, Marlins Park, Downtown Miami and Allapattah.

Two right lines on the 836 west before 27th AVE is flooding from the 
heavy rainfall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

Please report flooding to your local law enforcement agency when you 
can do so safely.

&&

LAT...LON 2575 8025 2582 8025 2582 8018 2574 8019

FLASH FLOOD...RADAR INDICATED

$$

BAXTER
120 
WGUS72 KMFL 021948
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
348 PM EDT Thu Sep 2 2021

FLC086-022145-
/O.CON.KMFL.FF.W.0010.000000T0000Z-210902T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
348 PM EDT Thu Sep 2 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM EDT THIS 
AFTERNOON FOR NORTHERN MIAMI-DADE COUNTY...

At 348 PM EDT, Doppler radar indicated 3 and 7 inches of rain have 
fallen from the earlier thunderstorms. This amount of rainfall will 
take some time to drain away. Therefore, the Flash Flood Warning 
remains in effect until 545 PM EDT this afternoon for Northern 
Miami-Dade County.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Miami, Marlins Park, Downtown Miami and Allapattah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

Please report flooding to your local law enforcement agency when you 
can do so safely.

&&

LAT...LON 2575 8025 2582 8025 2582 8018 2574 8019

FLASH FLOOD...RADAR INDICATED

$$

BAXTER
055 
WGUS52 KMFL 022132
FFWMFL
FLC086-030000-
/O.EXT.KMFL.FF.W.0010.000000T0000Z-210903T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Miami FL
532 PM EDT Thu Sep 2 2021

The National Weather Service in Miami has extended the

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

* Until 800 PM EDT.

* At 532 PM EDT, Doppler radar indicated another area of 
  thunderstorms have developed west of the warning area. These 
  storms will be moving eastward and through the warning area during 
  the next hour capable of producing another 1 to 2 inches of 
  rainfall on top of the already 3 and 7 inches of rainfall that has 
  fallen from the earlier thunderstorms. This will continue 
  aggravate the ongoing flooding the area. Therefore, the Flash 
  Flood Warning has been extended until 8 PM this evening.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Miami, Marlins Park, Downtown Miami and Allapattah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

Please report flooding to your local law enforcement agency when you 
can do so safely.

&&

LAT...LON 2575 8025 2582 8025 2582 8018 2574 8019

FLASH FLOOD...RADAR INDICATED

$$

BAXTER
981 
WGUS72 KMFL 022237
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
637 PM EDT Thu Sep 2 2021

FLC086-030000-
/O.CON.KMFL.FF.W.0010.000000T0000Z-210903T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
637 PM EDT Thu Sep 2 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING 
FOR NORTHERN MIAMI-DADE COUNTY...

At 637 PM EDT, Doppler radar indicated that the storms have moved 
north of the warning area and there is only light to moderate rains 
occurring at this time. Between 3 and 7 inches of rain have fallen 
over the warning area from the earlier thunderstorms this afternoon, 
and will take some time for the water to drain away. Therefore, the 
Flash Flood Warning remains in effect until 8 PM EDT this evening 
for Northern Miami-Dade County.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Miami, Marlins Park, Downtown Miami and Allapattah.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

Please report flooding to your local law enforcement agency when you 
can do so safely.

&&

LAT...LON 2575 8025 2582 8025 2582 8018 2574 8019

FLASH FLOOD...RADAR INDICATED

$$

BAXTER
101 
WGUS72 KMFL 022353
FFSMFL

Flash Flood Statement
National Weather Service Miami FL
753 PM EDT Thu Sep 2 2021

FLC086-030003-
/O.EXP.KMFL.FF.W.0010.000000T0000Z-210903T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Miami-Dade FL-
753 PM EDT Thu Sep 2 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING FOR 
NORTHERN MIAMI-DADE COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 2575 8025 2582 8025 2582 8018 2574 8019

$$

BAXTER

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 Sep 2, 12:49 PM EDT, 1 hour 55 minutes earlier.

Area forecast discussion, Sep 2, 12:49 PM EDT, 1 hour 55 minutes before
Area Forecast Discussion
National Weather Service Miami FL
1249 PM EDT Thu Sep 2 2021

.AVIATION(18Z TAFS)...
Deep tropical moisture overspreading the area will support scattered
to numerous convection today, especially for the east coast sites.
Mostly VFR outside of passing SHRA/TS. Included TEMPOs for all east
coast sites from 18-21Z for IFR VIS and perhaps sub-MVFR CIGs. Due
to lingering uncertainty, short fused AMDs may be necessary going
into the evening hours. Convection should linger over the local
waters overnight, except APF where VCSH is mentioned. SW flow today
giving way to L/V winds overnight before picking up again Friday.
Gusty and erratic winds in/near TSRA.

&&

.PREV DISCUSSION... (Issued 844 AM EDT Thu Sep 2 2021)

..Strong Storms Possible Eastern Areas This Afternoon...
..Heavy Rainfall Possible Eastern Areas This Afternoon...

UPDATE...
High pressure to the south will allow for light W/SW winds to
continue areawide. GOES-16 water vapor imagery clearly depicts a
moisture "tail" associated with the remnants of Ida sliding down
across the Sunshine State, eventually reaching South FL.
Simultaneously, a mid-level trough with an attendant surface
boundary will also progress southward across the peninsula. This
increase in deep moisture will support scattered to numerous PoPs
this afternoon, especially along the east coast metro areas thanks
to mostly W steering flow. Unfortunately, the steering flow is on
the lackluster side (under 10 kt) which means most cell movement
will be in the form of cell mergers/collisions and outflow
boundaries.

Comparing MFL's, TBW's, and KEY's 02/12Z sounding, a very evident
moisture and wind gradient is observed --- lighter steering flow
to the south (~5 kt) and a little more oomph to the steering flow
to the north (15-20 kt) along with deeper moisture to the north.
Thus, cells that develop today will likely move slower across
areas generally south of Alligator Alley and slightly faster and
more numerous across areas generally north of Alligator Alley.
500 mb temperatures are on the warmer side today (around -5.9C)
which will hinder significant updraft development, however strong
storms are still possible across the east coast this afternoon,
especially when diurnal heating is greatest. DCAPE approaching
1000 J/kg and gradually steepening lapse rates may also aid in an
isolated damaging wind gust. Decent SRH values near 90 m2/s2 could
also support an environment favorable for funnel clouds,
including the east coast where frictional convergence is
anticipated.

The main hazards for today will be lightning, funnel clouds, strong
wind gusts, and heavy rainfall with the potential for flooding
along urban/metro areas of South FL. Looking at FFG, 1-hr FFG is
~3-4 inches across most areas of South FL, whereas 3-hr FFG is
~3-5 inches. Due to antecedent soil conditions and previous heavy
rainfall from the past few days, low-lying and poor drainage areas
may have some issues today. Keep abreast of the situation since
high end PoPs stick around through the weekend.

Despite increasing showers and storms today, toasty temperatures
stick around, with mid-upper 80s along the Gulf Coast and upper
80s to lower 90s across the east coast. Heat indices creeping
towards the triple digits.

BEACHES...
Due to persistent SW flow, upgrading the rip current risk to
moderate across the Gulf Coast beaches of South FL. Elevated risk
should continue the next few days.

PREV DISCUSSION... (Issued 718 AM EDT Thu Sep 2 2021)

AVIATION(12Z TAFS)...
Deep tropical moisture overspreading the area will support
scattered to numerous convection today, especially for the east
coast sites. Mostly VFR conditions expected outside of SHRA/TS,
though will likely create TEMPO groups with later package as
confidence on timing and coverage grows, again especially along
the east coast. Too uncertain for the time being so handling with
VCTS and short fused AMDs may be necessary. Sub-MVFR conditions
likely in convection that moves over an airfield. SW flow today
giving way to L/V winds overnight.

PREV DISCUSSION... (Issued 225 AM EDT Thu Sep 2 2021)

SHORT TERM (Thursday-Friday)...

High pressure south of the region with W/SW wind flow across the
area. A mid-level trough, with a surface boundary, and moisture
"tail" associated with the remnants of Ida will be sliding down
the peninsula. Increased moisture with an unsettled pattern and
increased rain chances. Highest chances on Thursday will be over
northern portions of the region and the east coast metro. Locally
heavy rainfall with potential for localized flooding, gusty winds
and frequent lightning will be the primary impacts.

Moisture remains across the are on Friday as the trough  and surface
boundary lingers just north or across the region to end the week. A
similar pattern for Friday with scattered to numerous showers and
thunderstorms favoring the interior and east coast given the flow
regime. Hazards will be similar today with gust winds and frequent
lightning possible. Friday, there may be a little more of flooding
potential along the east coast with regards to a little less storm
motion and the potential for heavy downpours with efficient rain
producers. The flooding potential for Friday will depend on the
antecedent conditions from rainfall today.

High temperatures will be in the upper 80s and low 90s with heat
indices approaching triple digits in some areas.

LONG TERM (Friday Night through Next Week)...

Models show a stationary, decaying frontal boundary across the FL/GA
border, with its parent trough extending across much of the E CONUS.
Meanwhile, high pressure centers dominate the GOMEX and the west
Atlantic.

Enhanced moisture south of the front will keep the peninsula under a
relatively moist airmass with model PWATs in the 1.7 to 2 inches
range. For the weekend, long range models show fair agreement in
developing a mid-upper low near the Bahamas, and bring it westward
toward the peninsula. If this low materializes, it will provide
enhanced lifting/instability across SoFlo for a few thunderstorms to
become strong, especially Saturday afternoon. Any showers/storms
that form during the weekend and into early next week will likely be
slow movers as the described synoptic scenario keeps pressure
gradients very relaxed across SoFlo.

Expect mainly scattered to numerous showers and thunderstorms to
develop each day with the best coverage over the eastern areas. And
with the relatively weak winds in place, some of the heavier
downpours could produce localized flooding as they linger longer
over the same locations.

For early next week, models show the aforementioned trough still
persisting over the eastern seaboard and keeping a generally light
S/SW wind regime in place over SoFlo. Thus, expect tropical moisture
advection to continue, which will continue to support at least high-
end scattered showers and thunderstorms to develop each day with the
highest POPs over the eastern areas.

AVIATION(06Z TAFS)...
L/V winds continue overnight with SW/W flow later this morning and
this afternoon. Scattered showers and thunderstorms across the
region in the afternoon. Mostly VFR conditions outside of SHRA/TS
that may impact the terminals. Until timing becomes more certain
will leave VCTS for now with any tempos for restrictions with
further forecast updates. L/V once again tomorrow night.

MARINE...
Fairly benign marine conditions, outside of convection,
across local South Florida waters with south/southwesterly flow.
Scattered to numerous showers and thunderstorms are possible over
the local waters throughout the period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Miami            77  92  77  91 /  40  60  30  60
West Kendall     75  92  75  92 /  30  50  30  50
Opa-Locka        77  92  76  91 /  30  60  30  60
Homestead        74  91  75  90 /  30  40  30  50
Fort Lauderdale  77  91  77  90 /  30  70  30  60
N Ft Lauderdale  77  91  77  90 /  30  70  30  60
Pembroke Pines   76  91  75  91 /  30  70  30  60
West Palm Beach  75  91  75  91 /  30  70  30  60
Boca Raton       76  91  75  90 /  30  70  30  60
Naples           77  88  76  89 /  50  60  30  50

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...None.
GM...None.
&&

Update/Aviation...Fell
Today through Friday and Marine...Kelly
Friday Night through Wednesday...AR

Visit us at weather.gov/miami

Follow us on Facebook and Twitter at:
www.facebook.com/nwsmiami
www.twitter.com/nwsmiami
Hazardous weather outlook, Sep 2, 8:40 AM EDT, 6 hours 4 minutes before
Hazardous Weather Outlook for South Florida
National Weather Service Miami FL
840 AM EDT Thu Sep 2 2021

AMZ610-630-650-651-670-671-FLZ063-066>075-168-172>174-GMZ656-657-676-
030045-
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-
840 AM EDT Thu Sep 2 2021

...A Few Strong Storms Possible Today East Coast...

This hazardous weather outlook is for South Florida.

.DAY ONE...TODAY AND TONIGHT

Rip currents: An elevated risk for rip currents along the Gulf Coast
beaches.

Thunderstorms: Scattered thunderstorms are possible with the best
coverage over eastern areas this afternoon into early this evening.
Strong wind gusts, lightning, heavy rainfall, localized flooding, and
funnel clouds are possible.

Wind: The strongest thunderstorms could contain wind gusts in excess
of 45 mph.

Flooding: Localized flooding possible over coastal areas.

Waterspouts: Waterspouts will be possible with the showers and
thunderstorms over the local South Florida waters.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Scattered to numerous showers and thunderstorms will continue
through the rest of the forecast period, with locally gusty winds,
frequent lightning, and heavy rainfall and flooding possible.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation is not anticipated, however 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.

Fell

In the hours before

Special weather statement, Sep 2, 12:24 PM EDT, 2 hours 20 minutes before
Special Weather Statement
National Weather Service Miami FL
1224 PM EDT Thu Sep 2 2021

FLZ066-067-069>071-073-075-021700-
Coastal Collier County FL-Inland Broward County FL-Hendry FL-
Inland Collier County FL-Mainland Monroe FL-
Inland Palm Beach County FL-Inland Miami-Dade County FL-
1224 PM EDT Thu Sep 2 2021

...Strong thunderstorms will impact portions of Collier, northern
Mainland Monroe, northern Miami-Dade, eastern Hendry, Broward and
western Palm Beach Counties through 100 PM EDT...

At 1223 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from 8 miles east of Montura to 9 miles southeast of Hendry
Correctional to 7 miles west of Copeland. Movement was northeast at
25 mph.

HAZARD...Funnel clouds and winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Belle Glade, Clewiston, Pahokee, South Bay, Chokoloskee, Canal Point,
Lake Harbor, Everglades City, Plantation Island, Loop Road Ee Center,
Carnestown, Belle Glade Camp, Copeland, Wilderness Waterway, Holey
Land Wildlife Refuge, Hendry Correctional, Big Cypress National
Preserve, Fortymile Bend, Miccosukee Indian Reservation and Royal
Palm Hammock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

Persons participating in outdoor activities should seek sturdy
shelter until these storms pass. Open shelters found in parks,
beaches, or golf courses offer no protection from the dangers of
lightning.

&&

LAT...LON 2634 8128 2675 8102 2681 8084 2679 8082
      2683 8079 2689 8059 2579 8057 2557 8126
      2566 8136 2573 8134 2575 8141 2579 8144
      2578 8148 2596 8166
TIME...MOT...LOC 1623Z 243DEG 22KT 2661 8096 2621 8111 2597 8147

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

RAG
Special weather statement, Sep 2, 1:01 PM EDT, 1 hour 43 minutes before
Special Weather Statement
National Weather Service Miami FL
101 PM EDT Thu Sep 2 2021

FLZ067-070>074-021730-
Inland Broward County FL-Inland Collier County FL-
Metro Broward County FL-Metropolitan Miami Dade FL-
Inland Palm Beach County FL-Inland Miami-Dade County FL-
101 PM EDT Thu Sep 2 2021

...Strong thunderstorms will impact portions of northwestern Miami-
Dade, western Broward and western Palm Beach Counties through 130 PM
EDT...

At 100 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a landspout along a line
extending from 6 miles southwest of Okeelanta to 12 miles southwest
of Intersection Alligator Alley And Miami Canal. Movement was
northeast at 30 mph.

HAZARD...Landspouts and winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible. Gusty winds
         could knock down tree limbs and blow around unsecured
         objects.

Locations impacted include...
Pembroke Pines, Miramar, Belle Glade, Pahokee, South Bay, Lake
Harbor, Weston, Hialeah Gardens, Medley, Okeelanta, Rotenberger
Wildlife Refuge, Belle Glade Camp, Intersection I-75 And U.S. 27,
Miccosukee Service Plaza, Pennsuco, Mile Marker 30 On Alligator
Alley, Holey Land Wildlife Refuge, Intersection Alligator Alley And
Miami Canal, Intersection Krome And U.S. 27 and Miccosukee Indian
Reservation.

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.

Persons participating in outdoor activities should seek sturdy
shelter until these storms pass. Open shelters found in parks,
beaches, or golf courses offer no protection from the dangers of
lightning.

&&

LAT...LON 2571 8071 2611 8088 2667 8089 2689 8052
      2588 8036
TIME...MOT...LOC 1700Z 230DEG 25KT 2654 8080 2598 8071

LANDSPOUT...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

RAG
Special weather statement, Sep 2, 1:32 PM EDT, 1 hour 12 minutes before
Special Weather Statement
National Weather Service Miami FL
132 PM EDT Thu Sep 2 2021

FLZ067-068-071-072-021800-
Inland Broward County FL-Metro Broward County FL-
Inland Palm Beach County FL-Metro Palm Beach County FL-
132 PM EDT Thu Sep 2 2021

...Strong thunderstorms will impact portions of central Broward and
southeastern Palm Beach Counties through 200 PM EDT...

At 132 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from 9 miles east of Belle Glade to 10 miles east of Holey
Land Wildlife Refuge to 7 miles south of Mile Marker 30 On Alligator
Alley. Movement was east at 20 mph.

HAZARD...Funnel clouds and winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Pembroke Pines, Hollywood, Miramar, Coral Springs, West Palm Beach,
Davie, Plantation, Sunrise, Tamarac, Wellington, Margate, Palm Beach
Gardens, Belle Glade, Lauderhill, Weston, North Lauderdale, Royal
Palm Beach, Lauderdale Lakes, Cooper City and Parkland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2690 8020 2644 8020 2599 8023 2596 8063
      2642 8076 2671 8064
TIME...MOT...LOC 1732Z 262DEG 17KT 2664 8052 2640 8056 2605 8057

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SB
Special weather statement, Sep 2, 1:57 PM EDT, 47 minutes before
Special Weather Statement
National Weather Service Miami FL
157 PM EDT Thu Sep 2 2021

FLZ067-068-071-072-168-172-021830-
Inland Broward County FL-Coastal Broward County FL-
Coastal Palm Beach County FL-Metro Broward County FL-
Inland Palm Beach County FL-Metro Palm Beach County FL-
157 PM EDT Thu Sep 2 2021

...Strong thunderstorms will impact portions of northern Broward and
eastern Palm Beach Counties through 230 PM EDT...

At 157 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from near West Palm Beach to near Wellington to 7 miles
west of Parkland. Movement was east at 25 mph.

HAZARD...Funnel clouds and wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Coral Springs, West Palm Beach, Boca Raton, Deerfield Beach, Boynton
Beach, Delray Beach, Wellington, Jupiter, Palm Beach Gardens, Lake
Worth, Riviera Beach, Lighthouse Point, Palm Beach, Tequesta,
Highland Beach, Juno Beach, Ocean Ridge, Coconut Creek, Greenacres
and Royal Palm Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2696 8003 2629 8003 2631 8046 2642 8054
      2677 8053 2696 8022
TIME...MOT...LOC 1757Z 273DEG 20KT 2678 8018 2660 8028 2634 8037

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

SB
Special weather statement, Sep 2, 2:29 PM EDT, 15 minutes before
Special Weather Statement
National Weather Service Miami FL
229 PM EDT Thu Sep 2 2021

FLZ074-173-021915-
Metropolitan Miami Dade FL-Coastal Miami Dade County FL-
229 PM EDT Thu Sep 2 2021

...A strong thunderstorm will impact portions of northern Miami-Dade
County through 315 PM EDT...

At 229 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm over Marlins Park, or over Miami, moving east
at 35 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Miami, Hialeah, Miami Beach, Coral Gables, Key Biscayne, South Miami,
Surfside, Virginia Key, Kendall, Doral, Pinecrest, Miami Springs,
Miami Shores, North Bay Village, West Miami, El Portal, Medley,
Westchester, Gladeview and Glenvar Heights.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2568 8035 2585 8036 2589 8008 2569 8010
TIME...MOT...LOC 1829Z 256DEG 29KT 2576 8025

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

SPM
Special weather statement, Sep 2, 2:44 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Miami FL
244 PM EDT Thu Sep 2 2021

FLZ066-069-070-021930-
Coastal Collier County FL-Hendry FL-Inland Collier County FL-
244 PM EDT Thu Sep 2 2021

...Strong thunderstorms will impact portions of southern Collier and
southeastern Hendry Counties through 330 PM EDT...

At 244 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from 7 miles southwest of Hendry Correctional to near
Copeland. Movement was east at 20 mph.

HAZARD...Funnel clouds, winds in excess of 40 mph, and pea size
         hail.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes
         or waterspouts. Gusty winds could knock down tree limbs and
         blow around unsecured objects.

Locations impacted include...
Marco Island, Everglades City, Carnestown, Copeland, Hendry
Correctional, Big Cypress Seminole Reservation, Royal Palm Hammock,
Big Cypress National Preserve, South Blocks Golde, Sunniland,
Fakahatchee Strand State Preserve, Picayune Strand State Forest, Port
Of The Island, Goodland, Miles City, Cape Romano Aquatic Preserve,
Jerome and Deep Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 2640 8091 2583 8118 2586 8145 2592 8166
      2610 8156 2629 8134
TIME...MOT...LOC 1844Z 263DEG 16KT 2624 8130 2597 8144

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

SB

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 8:25 PM EDTSpecial Marine WarningMFL35 min
Sep 1, 8:52 PM EDTSpecial Marine WarningMFL23 min
Sep 1, 9:13 PM EDTSpecial Weather StatementMFLCollier47 min
Sep 2, 9:47 AM EDTSpecial Marine WarningMFL43 min
Sep 2, 9:54 AM EDTSpecial Weather StatementMFLCollier51 min
Sep 2, 12:24 PM EDTSpecial Weather StatementMFLCollier, Hendry36 min
Sep 2, 12:39 PM EDTSevere Thunderstorm WarningMFLCollier36 min
Sep 2, 1:01 PM EDTSpecial Weather StatementMFLBroward29 min
Sep 2, 1:32 PM EDTSpecial Weather StatementMFLBroward, Palm Beach28 min
Sep 2, 1:57 PM EDTSpecial Weather StatementMFLPalm Beach33 min
Sep 2, 2:07 PM EDTAreal Flood AdvisoryMFLMiami-Dade3 hr
Sep 2, 2:21 PM EDTAreal Flood AdvisoryMFLMiami-Dade2 hr
Sep 2, 2:23 PM EDTSpecial Marine WarningMFL52 min
Sep 2, 2:27 PM EDTSpecial Marine WarningMFL33 min
Sep 2, 2:29 PM EDTSpecial Weather StatementMFLMiami-Dade46 min
Sep 2, 2:44 PM EDTSpecial Weather StatementMFLCollier46 min
Sep 2, 2:49 PM EDTAreal Flood AdvisoryMFLMiami-Dade95 min
Sep 2, 2:53 PM EDTSpecial Marine WarningMFL67 min
Sep 2, 2:56 PM EDTSpecial Weather StatementMFLMiami-Dade64 min
Sep 2, 3:08 PM EDTSpecial Marine WarningMFL52 min
Sep 2, 3:16 PM EDTAreal Flood AdvisoryMFLMiami-Dade3 hr
Sep 2, 4:15 PM EDTSpecial Marine WarningMFL45 min
Sep 2, 4:23 PM EDTSpecial Weather StatementMFLMonroe37 min
Sep 2, 4:43 PM EDTSpecial Marine WarningMFL47 min
Sep 2, 5:01 PM EDTSpecial Weather StatementMFLMiami-Dade29 min
Sep 2, 5:43 PM EDTSpecial Weather StatementMFLMiami-Dade47 min
Sep 2, 6:02 PM EDTAreal Flood AdvisoryMFLMiami-Dade118 min

Nearby

Flash Flood Warnings in Florida, 2021Every flash flood warning in 2021

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.