Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

August 9, 2021Hendry County, Florida

NWS Miami, FL issued this special weather statement at Aug 9, 2021, 3:33 PM EDT for Hendry County, Florida. It was in force for 42 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 9, 2021, 3:33 PM EDT (19:33 UTC)
Expired
Aug 9, 2021, 4:15 PM EDT
In force
42 min
Issued by
NWS Miami, FL
Hail
0.25 in
Wind
40

County Hendry County, FL

The radar

The Miami radar (KAMX), 136 km from the middle of the area, began a volume at 19:32 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, 7.6 hours before the alert went out and 133 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 2021-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2002 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 2021-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 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
2002 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
935 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

245 
WWUS82 KMFL 091933
SPSMFL

Special Weather Statement
National Weather Service Miami FL
333 PM EDT Mon Aug 9 2021
 
FLZ066-070-092015-
Hendry FL-Inland Collier County FL-
333 PM EDT Mon Aug 9 2021

...Strong thunderstorms will impact portions of northern Collier and
southern Hendry Counties through 415 PM EDT...

At 333 PM EDT, National Weather Service meteorologists were tracking
strong thunderstorms capable of producing a funnel cloud along a line
extending from 8 miles northeast of Hendry Correctional to near Ave
Maria to Big Corkscrew Island. Movement was west at 10 mph.

HAZARD...Funnel clouds, winds in excess of 40 mph, and pea size 
         hail.

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...
Ave Maria, Golden Gate Estates, Immokalee, Hendry Correctional,
Felda, Orangetree, Big Corkscrew Island, Corkscrew Swamp Sanctuary,
Sunniland, Bunker Hill and Lake Trafford.

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 these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2632 8166 2642 8166 2642 8156 2655 8156
      2659 8122 2651 8097 2620 8104 2619 8164
      2632 8167
TIME...MOT...LOC 1933Z 095DEG 8KT 2642 8114 2634 8140 2635 8156 

FUNNEL CLOUD...POSSIBLE
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

Weinman

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 8:21 PM EDTSpecial Marine WarningMFL54 min
Aug 8, 9:03 PM EDTSpecial Marine WarningMFL57 min
Aug 8, 9:18 PM EDTSpecial Marine WarningMFL27 min
Aug 8, 9:29 PM EDTSpecial Weather StatementMFLHendry31 min
Aug 8, 9:40 PM EDTSpecial Marine WarningMFL35 min
Aug 9, 2:53 PM EDTSpecial Marine WarningMFL67 min
Aug 9, 3:15 PM EDTAreal Flood AdvisoryMFLCollier2 hr
Aug 9, 3:24 PM EDTSpecial Marine WarningMFL66 min
Aug 9, 3:41 PM EDTAreal Flood AdvisoryMFLCollier109 min
Aug 9, 3:43 PM EDTSpecial Weather StatementMFLCollier47 min
Aug 9, 4:35 PM EDTSpecial Weather StatementMFLCollier40 min
Aug 9, 4:37 PM EDTSpecial Marine WarningMFL53 min
Aug 9, 5:01 PM EDTSpecial Weather StatementMFLCollier44 min
Aug 9, 5:26 PM EDTSpecial Marine WarningMFL34 min
Aug 9, 5:35 PM EDTSpecial Weather StatementMFLBroward40 min
Aug 9, 6:42 PM EDTSpecial Marine WarningMFL63 min

Nearby

Special Weather Statements in Florida, 2021Every 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.