Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

August 3, 2021Miami-Dade County, Florida

NWS Miami, FL issued this special weather statement at Aug 3, 2021, 8:11 PM EDT for Miami-Dade County, Florida. It was in force for 49 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 3, 2021, 8:11 PM EDT (00:11 UTC)
Expired: Aug 3, 2021, 9:00 PM EDT
In force: 49 min
Issued by: NWS Miami, FL

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 25 km from the middle of the area, began a volume at 00:15 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

Key West, FL (KEYW), launched 00:00Z, 0.2 hours before the alert went out and 200 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: 2883 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 893 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

579 
WWUS82 KMFL 040011
SPSMFL

Special Weather Statement
National Weather Service Miami FL
811 PM EDT Tue Aug 3 2021
 
FLZ073-074-173-040100-
Metropolitan Miami Dade FL-Inland Miami-Dade County FL-
Coastal Miami Dade County FL-
811 PM EDT Tue Aug 3 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MIAMI-DADE COUNTY UNTIL
900 PM EDT...

* At 810 PM EDT, National Weather Service meteorologists were
  tracking a strong thunderstorm over Port Of Miami, or over Miami,
  moving east at 20 mph.

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

* Locations impacted include...
  Miami, Hialeah, Miami Beach, Coral Gables, Key Biscayne, South
  Miami, Surfside, Virginia Key, Kendall, North Miami, Doral, North
  Miami Beach, Hialeah Gardens, Sunny Isles Beach, Pinecrest,
  Opa-Locka, Miami Springs, Miami Shores, North Bay Village and West
  Miami.

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.

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.

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 2569 8032 2582 8031 2581 8042 2587 8032
      2593 8012 2579 8012 2566 8015
TIME...MOT...LOC 0010Z 270DEG 16KT 2579 8018 

$$

AR

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, 8:16 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, 1:11 PM EDT	Special Weather Statement	MFL	Broward	64 min
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.