Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

August 4, 2021Broward County, Florida

NWS Miami, FL issued this special weather statement at Aug 4, 2021, 1:11 PM EDT for Broward County, Florida. It was in force for 64 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: Aug 4, 2021, 1:11 PM EDT (17:11 UTC)
Expired: Aug 4, 2021, 2:15 PM EDT
In force: 64 min
Issued by: NWS Miami, FL

County Broward County, FL

The radar

The Miami radar (KAMX), 61 km from the middle of the area, began a volume at 17:12 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, 5.2 hours before the alert went out and 35 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 903 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

703 
WWUS82 KMFL 041711
SPSMFL

Special Weather Statement
National Weather Service Miami FL
111 PM EDT Wed Aug 4 2021
 
FLZ067-068-071>074-168-172-173-041815-
Inland Broward County FL-Coastal Broward County FL-
Coastal Palm Beach County FL-Metro Broward County FL-
Metropolitan Miami Dade FL-Inland Palm Beach County FL-Inland Miami-
Dade County FL-Metro Palm Beach County FL-
Coastal Miami Dade County FL-
111 PM EDT Wed Aug 4 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MIAMI-DADE...BROWARD AND
SOUTHEASTERN PALM BEACH COUNTIES UNTIL 215 PM EDT...

* At 111 PM EDT, National Weather Service meteorologists were
  tracking strong thunderstorms along a line extending from Deerfield
  Beach to near Intersection Krome And Kendall Drive. Movement was
  northeast at 20 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, Coral Springs, Pompano Beach, Davie, Miami Beach,
  Plantation, Sunrise, Boca Raton, Deerfield Beach, Boynton Beach,
  Delray Beach, Tamarac, Margate, Coral Gables and Key Biscayne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms 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.

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 2645 8003 2593 8004 2564 8018 2571 8059
      2650 8012
TIME...MOT...LOC 1711Z 212DEG 21KT 2630 8010 2572 8047 

$$

FELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 8:00 PM EDT	Special Weather Statement	MFL	Miami-Dade	60 min
Aug 3, 8:11 PM EDT	Special Weather Statement	MFL	Miami-Dade	49 min
Aug 3, 8:16 PM EDT	Areal Flood Advisory	MFL	Miami-Dade	119 min
Aug 3, 8:27 PM EDT	Areal Flood Advisory	MFL	Miami-Dade	2 hr
Aug 3, 9:29 PM EDT	Special Weather Statement	MFL	Miami-Dade	61 min
Aug 4, 7:49 AM EDT	Areal Flood Advisory	MFL	Collier	2 hr
Aug 4, 8:44 AM EDT	Areal Flood Advisory	MFL	Collier	2 hr
Aug 4, 11:15 AM EDT	Areal Flood Advisory	MFL	Collier	3 hr
Aug 4, 11:53 AM EDT	Special Marine Warning	MFL		67 min
Aug 4, 12:02 PM EDT	Special Weather Statement	MFL	Broward	43 min
Aug 4, 12:40 PM EDT	Special Weather Statement	MFL	Broward	35 min
Aug 4, 12:58 PM EDT	Special Marine Warning	MFL		62 min
Aug 4, 1:11 PM EDT	Areal Flood Advisory	MFL	Broward, Miami-Dade	2 hr
Aug 4, 1:25 PM EDT	Areal Flood Advisory	MFL	Broward, Palm Beach	2 hr
Aug 4, 3:18 PM EDT	Areal Flood Advisory	MFL	Miami-Dade	117 min

Nearby

Special Weather Statements in Florida, 2021 Every 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; radar from the NEXRAD Level II archive.