Alert archive / Florida / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 51, NWS Miami, FL

July 31, 2021Glades County, Hendry County, Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 31, 2021, 7:05 PM EDT for Glades County, Hendry County, Palm Beach County, Florida. It was in force for 40 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 31, 2021, 7:05 PM EDT (23:05 UTC)
Expired: Jul 31, 2021, 7:45 PM EDT
In force: 40 min
Issued by: NWS Miami, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Glades County, FL, Hendry County, FL, Palm Beach County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 11.1 hours before the alert went out and 116 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: 1458 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 888 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -34 m²/s²
0-3 km storm-relative helicity: -13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

163 
WUUS52 KMFL 312305
SVRMFL
FLC043-051-099-312345-
/O.NEW.KMFL.SV.W.0051.210731T2305Z-210731T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Miami FL
705 PM EDT Sat Jul 31 2021

The National Weather Service in Miami has issued a

* Severe Thunderstorm Warning for...
  Northeastern Hendry County in southern Florida...
  West central Palm Beach County in southeastern Florida...
  Southern Glades County in southern Florida...

* Until 745 PM EDT.

* At 705 PM EDT, a severe thunderstorm was located over Clewiston,
  moving north at 15 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...
  Clewiston, Lake Harbor and Harlem. 

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 2662 8082 2667 8106 2686 8101 2677 8080
TIME...MOT...LOC 2305Z 188DEG 13KT 2673 8094 

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

Weinman

2 follow-up statements

236 
WWUS52 KMFL 312321
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
721 PM EDT Sat Jul 31 2021

FLC043-051-099-312345-
/O.CON.KMFL.SV.W.0051.000000T0000Z-210731T2345Z/
Hendry FL-Palm Beach FL-Glades FL-
721 PM EDT Sat Jul 31 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHEASTERN HENDRY...WESTERN PALM BEACH AND SOUTHEASTERN GLADES
COUNTIES...

At 721 PM EDT, a severe thunderstorm was located over Clewiston,
moving north at 15 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...
Clewiston, Lake Harbor and Harlem. 

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 2677 8080 2666 8082 2674 8102 2686 8100
TIME...MOT...LOC 2321Z 199DEG 11KT 2677 8091 

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

BAXTER

855 
WWUS52 KMFL 312335
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
735 PM EDT Sat Jul 31 2021

FLC043-051-099-312345-
/O.EXP.KMFL.SV.W.0051.000000T0000Z-210731T2345Z/
Hendry FL-Palm Beach FL-Glades FL-
735 PM EDT Sat Jul 31 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HENDRY...WESTERN
PALM BEACH AND SOUTHEASTERN GLADES COUNTIES WILL EXPIRE AT 745 PM
EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

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

LAT...LON 2677 8080 2666 8082 2674 8102 2686 8100
TIME...MOT...LOC 2335Z 188DEG 13KT 2681 8090 

$$

BAXTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 12:33 AM EDT	Special Weather Statement	MFL	Broward	42 min
Jul 31, 6:05 PM EDT	Special Weather Statement	MFL	Hendry	40 min
Jul 31, 6:39 PM EDT	Special Weather Statement	MFL	Hendry	51 min
Jul 31, 7:01 PM EDT	Special Marine Warning	MFL		59 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.