Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

July 23, 2021Broward County, Florida

NWS Miami, FL issued this special weather statement at Jul 23, 2021, 4:16 PM EDT for Broward County, Florida. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 23, 2021, 4:16 PM EDT (20:16 UTC)
Expired
Jul 23, 2021, 5:15 PM EDT
In force
59 min
Issued by
NWS Miami, FL

County Broward County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.3 hours before the alert went out and 71 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 2021-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1775 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 2021-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -43 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
1775 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
804 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
-43 m²/s²
0-3 km storm-relative helicity
-23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

244 
WWUS82 KMFL 232016
SPSMFL

Special Weather Statement
National Weather Service Miami FL
416 PM EDT Fri Jul 23 2021
 
FLZ066-067-070-071-232115-
Inland Broward County FL-Hendry FL-Inland Collier County FL-
Inland Palm Beach County FL-
416 PM EDT Fri Jul 23 2021

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL COLLIER...
SOUTHEASTERN HENDRY...BROWARD AND SOUTHWESTERN PALM BEACH COUNTIES
UNTIL 515 PM EDT...

* At 416 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm near Rotenberger Wildlife Refuge, or
  26 miles south of Lake Harbor, moving south at 5 mph.

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

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

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.

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

&&

LAT...LON 2637 8099 2643 8059 2605 8054 2601 8096
TIME...MOT...LOC 2016Z 345DEG 6KT 2631 8086 

$$

RF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 8:08 PM EDTSpecial Weather StatementMFLGlades52 min
Jul 22, 10:25 PM EDTSpecial Weather StatementMFLHendry50 min
Jul 23, 9:42 AM EDTSpecial Marine WarningMFL63 min
Jul 23, 1:33 PM EDTSpecial Weather StatementMFLMiami-Dade42 min
Jul 23, 1:33 PM EDTSpecial Weather StatementMFLMiami-Dade42 min
Jul 23, 2:14 PM EDTSpecial Weather StatementMFLMiami-Dade31 min
Jul 23, 2:57 PM EDTSpecial Weather StatementMFLPalm Beach63 min
Jul 23, 3:03 PM EDTSpecial Weather StatementMFLCollier42 min
Jul 23, 3:52 PM EDTSpecial Weather StatementMFLPalm Beach68 min
Jul 23, 4:16 PM EDTAreal Flood AdvisoryMFLPalm Beach119 min
Jul 23, 4:29 PM EDTSpecial Weather StatementMFLBroward46 min
Jul 23, 4:40 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach50 min
Jul 23, 4:42 PM EDTSpecial Marine WarningMFL93 min
Jul 23, 4:53 PM EDTSpecial Weather StatementMFLBroward52 min
Jul 23, 4:56 PM EDTSevere Thunderstorm WarningMFLBroward, Collier, Hendry, Miami-Dade, Monroe, Palm Beach49 min
Jul 23, 5:17 PM EDTSpecial Weather StatementMFLBroward43 min
Jul 23, 5:20 PM EDTSpecial Weather StatementMFLPalm Beach55 min
Jul 23, 5:23 PM EDTSpecial Marine WarningMFL2 hr
Jul 23, 5:24 PM EDTSpecial Weather StatementMFLGlades66 min
Jul 23, 5:47 PM EDTAreal Flood AdvisoryMFLBroward, Palm Beach118 min
Jul 23, 5:49 PM EDTSpecial Weather StatementMFLBroward41 min
Jul 23, 6:03 PM EDTSpecial Weather StatementMFLHendry42 min
Jul 23, 6:12 PM EDTSpecial Weather StatementMFLBroward48 min
Jul 23, 6:20 PM EDTSpecial Marine WarningMFL55 min
Jul 23, 6:22 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade23 min
Jul 23, 6:27 PM EDTSpecial Weather StatementMFLPalm Beach48 min
Jul 23, 6:29 PM EDTSpecial Weather StatementMFLMiami-Dade46 min
Jul 23, 6:57 PM EDTSpecial Weather StatementMFLHendry48 min
Jul 23, 7:06 PM EDTSpecial Weather StatementMFLPalm Beach39 min

Nearby

Special Weather Statements in Florida, 2021Every special weather 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.