Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

August 7, 2021Hendry County, Florida

NWS Miami, FL issued this special weather statement at Aug 7, 2021, 1:54 PM EDT for Hendry County, Florida. It was in force for 51 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 7, 2021, 1:54 PM EDT (17:54 UTC)
Expired: Aug 7, 2021, 2:45 PM EDT
In force: 51 min
Issued by: NWS Miami, FL
Hail: 0.00 in
Wind: 40

County Hendry County, FL

The radar

The Miami radar (KAMX), 123 km from the middle of the area, began a volume at 17:56 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, 5.9 hours before the alert went out and 109 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: 2842 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 696 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

007 
WWUS82 KMFL 071754
SPSMFL

Special Weather Statement
National Weather Service Miami FL
154 PM EDT Sat Aug 7 2021
 
FLZ066-067-071845-
Hendry FL-Inland Palm Beach County FL-
154 PM EDT Sat Aug 7 2021

...Strong thunderstorms will impact portions of northeastern Hendry
and west central Palm Beach Counties through 245 PM EDT...

At 153 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from Okeelanta to 11 miles northwest of Rotenberger
Wildlife Refuge to 7 miles south of Devils Garden. Movement was
northwest at 5 mph.

HAZARD...Funnel clouds and winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Funnel clouds occasionally touch down and produce tornadoes 
         or waterspouts. Gusty winds could knock down tree limbs and 
         blow around unsecured objects.

Locations impacted include...
Clewiston, South Bay, Montura, Lake Harbor, Okeelanta, Devils Garden
and Harlem.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Persons participating in outdoor activities should seek sturdy
shelter until these storms pass. Open shelters found in parks,
beaches, or golf courses offer no protection from the dangers of
lightning.

&&

LAT...LON 2676 8079 2675 8105 2662 8133 2641 8108
      2648 8086 2655 8061
TIME...MOT...LOC 1753Z 125DEG 6KT 2658 8073 2654 8093 2650 8111 

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

Hadi/Weinman

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 7:32 AM EDT	Special Weather Statement	MFL	Palm Beach	28 min
Aug 7, 7:37 AM EDT	Special Marine Warning	MFL		23 min
Aug 7, 8:43 AM EDT	Areal Flood Advisory	MFL	Palm Beach	2 hr
Aug 7, 10:03 AM EDT	Special Weather Statement	MFL	Miami-Dade	27 min
Aug 7, 10:29 AM EDT	Special Weather Statement	MFL	Miami-Dade	31 min
Aug 7, 11:04 AM EDT	Special Weather Statement	MFL	Palm Beach	41 min
Aug 7, 2:48 PM EDT	Areal Flood Advisory	MFL	Collier	117 min
Aug 7, 3:18 PM EDT	Areal Flood Advisory	MFL	Palm Beach	117 min
Aug 7, 3:29 PM EDT	Special Weather Statement	MFL	Palm Beach	46 min
Aug 7, 3:39 PM EDT	Special Weather Statement	MFL	Palm Beach	36 min
Aug 7, 3:48 PM EDT	Special Weather Statement	MFL	Miami-Dade	42 min
Aug 7, 4:04 PM EDT	Special Weather Statement	MFL	Palm Beach	41 min
Aug 7, 4:22 PM EDT	Areal Flood Advisory	MFL	Miami-Dade	113 min
Aug 7, 4:31 PM EDT	Special Weather Statement	MFL	Miami-Dade	44 min
Aug 7, 4:44 PM EDT	Special Weather Statement	MFL	Miami-Dade	46 min
Aug 7, 4:49 PM EDT	Special Weather Statement	MFL	Palm Beach	41 min
Aug 7, 5:02 PM EDT	Special Weather Statement	MFL	Broward	43 min
Aug 7, 5:41 PM EDT	Areal Flood Advisory	MFL	Broward	64 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.