Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS Miami, FL

March 6, 2021Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Mar 6, 2021, 5:24 PM EST for Miami-Dade County, Florida. It was in force for 17 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
Mar 6, 2021, 5:24 PM EST (22:24 UTC)
Expired
Mar 6, 2021, 5:41 PM EST
In force
17 min
Issued by
NWS Miami, FL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 34 km from the middle of the area, began a volume at 22:27 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, 10.4 hours before the alert went out and 18 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 2021-03-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 2021-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -11 square meters per square second.1939587897117Sfc1 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
2 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1349 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
-11 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

914 
WUUS52 KMFL 062224
SVRMFL
FLC086-062300-
/O.NEW.KMFL.SV.W.0005.210306T2224Z-210306T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Miami FL
524 PM EST Sat Mar 6 2021

The National Weather Service in Miami has issued a

* Severe Thunderstorm Warning for...
  Northern Miami-Dade County in southeastern Florida...

* Until 600 PM EST.

* At 523 PM EST, severe thunderstorms were located along a line
  extending from Miami Beach to Downtown Miami to Coral Gables,
  moving east at 15 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Miami Beach, Key Biscayne, Virginia Key and Fisher Island. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Miami. You can also share your report with NWS Miami on
Facebook and Twitter.

&&

LAT...LON 2581 8008 2576 8008 2570 8010 2570 8024
      2578 8016 2581 8012
TIME...MOT...LOC 2223Z 272DEG 15KT 2580 8013 2577 8019 2572 8025 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

BAXTER
1 follow-up statement
974 
WWUS52 KMFL 062241
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
541 PM EST Sat Mar 6 2021

FLC086-062251-
/O.CAN.KMFL.SV.W.0005.000000T0000Z-210306T2300Z/
Miami-Dade FL-
541 PM EST Sat Mar 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MIAMI-DADE COUNTY IS
CANCELLED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with these thunderstorms.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Miami.

LAT...LON 2581 8008 2576 8008 2570 8010 2570 8024
      2578 8016 2581 8012
TIME...MOT...LOC 2240Z 272DEG 15KT 2580 8005 2577 8011 2572 8017 

$$

BAXTER

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 2:45 PM ESTSpecial Weather StatementMFLCollier45 min
Mar 6, 3:02 PM ESTSmall Craft AdvisoryMFL5 days
Mar 6, 3:11 PM ESTSpecial Weather StatementMFLBroward64 min
Mar 6, 3:37 PM ESTSpecial Weather StatementMFLBroward38 min
Mar 6, 3:58 PM ESTSpecial Weather StatementMFLBroward62 min
Mar 6, 4:27 PM ESTSevere Thunderstorm WarningMFLBroward, Miami-Dade48 min
Mar 6, 4:30 PM ESTSpecial Marine WarningMFL60 min
Mar 6, 4:48 PM ESTSpecial Weather StatementMFLMiami-Dade57 min
Mar 6, 5:09 PM ESTAreal Flood AdvisoryMFLMiami-Dade3 hr
Mar 6, 5:17 PM ESTSpecial Marine WarningMFL58 min
Mar 6, 5:41 PM ESTSpecial Marine WarningMFL64 min
Mar 6, 6:04 PM ESTSpecial Marine WarningMFL86 min

Nearby

Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.