Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 49, NWS Miami, FL

July 24, 2021Broward County, Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 24, 2021, 2:43 PM EDT for Broward County, Palm Beach County, Florida. It was in force for 33 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 24, 2021, 2:43 PM EDT (18:43 UTC)
Expired: Jul 24, 2021, 3:16 PM EDT
In force: 33 min
Issued by: NWS Miami, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Broward County, FL, Palm Beach County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 6.7 hours before the alert went out and 57 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: 875 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1024 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 85 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

361 
WUUS52 KMFL 241843
SVRMFL
FLC011-099-241930-
/O.NEW.KMFL.SV.W.0049.210724T1843Z-210724T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Miami FL
243 PM EDT Sat Jul 24 2021

The National Weather Service in Miami has issued a

* Severe Thunderstorm Warning for...
  Northern Broward County in southeastern Florida...
  Southeastern Palm Beach County in southeastern Florida...

* Until 330 PM EDT.

* At 243 PM EDT, a severe thunderstorm was located over Boca Del Mar,
  or over Deerfield Beach, moving southeast at 10 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Fort Lauderdale, Coral Springs, Pompano Beach, Boca Raton and
  Deerfield Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into a
closet or small central room in a sturdy structure.

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 2639 8038 2649 8005 2624 7991 2611 8015
TIME...MOT...LOC 1843Z 328DEG 10KT 2633 8014 

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

SB/SM

2 follow-up statements

466 
WWUS52 KMFL 241851
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
251 PM EDT Sat Jul 24 2021

FLC011-099-241930-
/O.CON.KMFL.SV.W.0049.000000T0000Z-210724T1930Z/
Broward FL-Palm Beach FL-
251 PM EDT Sat Jul 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHERN BROWARD AND SOUTHEASTERN PALM BEACH COUNTIES...

At 251 PM EDT, a severe thunderstorm was located over Deerfield
Beach, moving southeast at 10 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Fort Lauderdale, Coral Springs, Pompano Beach, Boca Raton and
Deerfield Beach.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into a
small central room in a sturdy structure.

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 2644 8003 2617 8003 2611 8015 2637 8036
      2645 8004
TIME...MOT...LOC 1851Z 328DEG 10KT 2631 8013 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

SB/SM

975 
WWUS52 KMFL 241916
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
316 PM EDT Sat Jul 24 2021

FLC011-099-241926-
/O.CAN.KMFL.SV.W.0049.000000T0000Z-210724T1930Z/
Broward FL-Palm Beach FL-
316 PM EDT Sat Jul 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BROWARD AND
SOUTHEASTERN PALM BEACH COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and 
heavy rain are still possible with this thunderstorm.

LAT...LON 2644 8003 2617 8003 2611 8015 2637 8036
      2645 8004
TIME...MOT...LOC 1913Z 328DEG 10KT 2625 8009 

$$

SB/SM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 8:02 PM EDT	Special Weather Statement	MFL	Hendry	43 min
Jul 23, 8:19 PM EDT	Special Marine Warning	MFL		56 min
Jul 24, 2:56 AM EDT	Flood Watch	MFL	Broward, Collier, Miami-Dade, Palm Beach	65 hr
Jul 24, 4:28 AM EDT	Special Marine Warning	MFL		32 min
Jul 24, 12:27 PM EDT	Special Weather Statement	MFL	Miami-Dade	48 min
Jul 24, 1:01 PM EDT	Special Weather Statement	MFL	Collier	44 min
Jul 24, 1:02 PM EDT	Special Marine Warning	MFL		58 min
Jul 24, 1:55 PM EDT	Special Marine Warning	MFL		35 min
Jul 24, 2:23 PM EDT	Areal Flood Advisory	MFL	Collier	3 hr
Jul 24, 2:26 PM EDT	Special Weather Statement	MFL	Broward	34 min
Jul 24, 2:29 PM EDT	Special Weather Statement	MFL	Hendry	46 min
Jul 24, 2:57 PM EDT	Special Marine Warning	MFL		48 min
Jul 24, 3:05 PM EDT	Areal Flood Advisory	MFL	Broward, Palm Beach	115 min
Jul 24, 3:15 PM EDT	Special Weather Statement	MFL	Broward	30 min
Jul 24, 3:29 PM EDT	Special Weather Statement	MFL	Hendry	46 min
Jul 24, 3:31 PM EDT	Special Weather Statement	MFL	Palm Beach	44 min
Jul 24, 3:51 PM EDT	Special Weather Statement	MFL	Broward	39 min
Jul 24, 4:30 PM EDT	Special Weather Statement	MFL	Palm Beach	45 min
Jul 24, 4:57 PM EDT	Special Marine Warning	MFL		33 min
Jul 24, 5:18 PM EDT	Special Weather Statement	MFL	Palm Beach	42 min
Jul 24, 5:25 PM EDT	Special Marine Warning	MFL		35 min
Jul 24, 5:33 PM EDT	Special Weather Statement	MFL	Glades	27 min
Jul 24, 6:02 PM EDT	Special Weather Statement	MFL	Palm Beach	28 min
Jul 24, 6:25 PM EDT	Special Weather Statement	MFL	Glades	35 min
Jul 24, 7:29 PM EDT	Special Marine Warning	MFL		46 min

Nearby

Severe Thunderstorm Warnings in Florida, 2021 Every 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.