Alert archive / Florida / Coastal Flood Statements in 2021

Coastal Flood Statement 5, NWS Miami, FL

November 12, 2021Broward County, Miami-Dade County, Palm Beach County, Florida

NWS Miami, FL issued this coastal flood statement at Nov 12, 2021, 8:47 AM EST for Broward County, Miami-Dade County, Palm Beach County, Florida. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Nov 12, 2021, 8:47 AM EST (13:47 UTC)
Expired
Nov 12, 2021, 7:00 PM EST
In force
10 hr
Issued by
NWS Miami, FL

Counties Broward County, FL, Miami-Dade County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 59 km from the middle of the area, began a volume at 13:48 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.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 1.8 hours before the alert went out and 39 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 2021-11-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 375 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 2021-11-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 square meters per square second.19395878Sfc1 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
375 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1045 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

216 
WHUS42 KMFL 121347
CFWMFL

Coastal Hazard Message
National Weather Service Miami FL
847 AM EST Fri Nov 12 2021

FLZ168-130000-
/O.NEW.KMFL.CF.S.0005.211112T1347Z-211113T0000Z/
/O.CON.KMFL.RP.S.0036.000000T0000Z-211113T0000Z/
Coastal Palm Beach-
847 AM EST Fri Nov 12 2021

...COASTAL FLOOD STATEMENT IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...For the High Rip Current Risk, dangerous rip currents. 
  For the Coastal Flood Statement, isolated minor coastal 
  flooding.

* WHERE...Coastal Palm Beach County.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Some water on low lying roads and property especially
  during high tide. Rip currents can sweep even the best swimmers
  away from shore into deeper water.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

FLZ172-173-130000-
/O.NEW.KMFL.CF.S.0005.211112T1347Z-211113T0000Z/
Coastal Broward-Coastal Miami-Dade-
847 AM EST Fri Nov 12 2021

...COASTAL FLOOD STATEMENT IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Isolated minor coastal flooding.

* WHERE...Coastal Broward and Coastal Miami-Dade Counties.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Some water on low lying roads and property especially
  during high tide.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

Torres-Vazquez/Frye
1 follow-up statement
169 
WHUS42 KMFL 122033
CFWMFL

Coastal Hazard Message
National Weather Service Miami FL
333 PM EST Fri Nov 12 2021

FLZ168-130000-
/O.CON.KMFL.CF.S.0005.000000T0000Z-211113T0000Z/
/O.CON.KMFL.RP.S.0036.000000T0000Z-211113T0000Z/
Coastal Palm Beach-
333 PM EST Fri Nov 12 2021

...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...HIGH RIP CURRENT RISK REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...For the High Rip Current Risk, dangerous rip currents. 
  For the Coastal Flood Statement, isolated minor coastal 
  flooding.

* WHERE...Coastal Palm Beach County.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Some water on low lying roads and property. Rip 
  currents can sweep even the best swimmers away from shore into 
  deeper water.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.

&&

$$

FLZ172-173-130000-
/O.CON.KMFL.CF.S.0005.000000T0000Z-211113T0000Z/
Coastal Broward-Coastal Miami-Dade-
333 PM EST Fri Nov 12 2021

...COASTAL FLOOD STATEMENT REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

* WHAT...Isolated minor coastal flooding.

* WHERE...Coastal Broward and Coastal Miami-Dade Counties.

* WHEN...Until 7 PM EST this evening.

* IMPACTS...Some water on low lying roads and property.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roadways.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 12, 10:57 AM ESTSpecial Weather StatementMFLGlades48 min
Nov 12, 11:05 AM ESTSpecial Weather StatementMFLPalm Beach40 min
Nov 12, 1:16 PM ESTSpecial Weather StatementMFLPalm Beach29 min

Nearby

Coastal Flood Statements in Florida, 2021Every coastal flood statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.