Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

August 7, 2021Palm Beach County, Florida

NWS Miami, FL issued this special weather statement at Aug 7, 2021, 3:29 PM EDT for Palm Beach County, Florida. It was in force for 46 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 7, 2021, 3:29 PM EDT (19:29 UTC)
Expired
Aug 7, 2021, 4:15 PM EDT
In force
46 min
Issued by
NWS Miami, FL
Hail
0.00 in
Wind
40

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 108 km from the middle of the area, began a volume at 19:34 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.

What was reported inside it

TimeReportWhereRemark
Aug 7, 3:30 PM EDTFUNNEL CLOUD3 Sw Aberdeen Golf Cour, FLA TRAINED SPOTTER REPORTED A FUNNEL CLOUD A FEW MILES TO THE WEST OF BOYNTON BEACH, FLORIDA AT 3:30 PM. A PHOTO OF THE FUNNEL CLOUD WAS ALSO SHARED ON SOCIAL MEDIA FROM A MEMBER OF THE BROADCAST MEDIA.
Aug 7, 3:35 PM EDTTORNADO1 Nw Boca Raton Equestr, FLLANDSPOUT. VIDEO AND PICTURE EVIDENCE OF A LANDSPOUT TORNADO NEAR THE INTERSECTION OF US 441 AND W ATLANTIC AVENUE BY TRAINED SPOTTERS AS WELL AS MULTIPLE PHOTOS AND VIDEOS ON SOCIAL MEDIA. TIME ESTIMATION OF 3:35PM BASED ON SOCIAL MEDIA IMAGES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 7.5 hours before the alert went out and 83 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 2021-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2842 joules per kilogram.LCLEL10008507005003002001001 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 2021-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
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.

191 
WWUS82 KMFL 071929
SPSMFL

Special Weather Statement
National Weather Service Miami FL
329 PM EDT Sat Aug 7 2021
 
FLZ067-068-072015-
Inland Palm Beach County FL-Metro Palm Beach County FL-
329 PM EDT Sat Aug 7 2021

...A strong thunderstorm will impact portions of southeastern Palm
Beach County through 415 PM EDT...

At 328 PM EDT, National Weather Service meteorologists were tracking 
a strong thunderstorm producing a funnel cloud near Village Of Golf, 
or near Boynton Beach. This storm was nearly stationary.

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...
Boynton Beach, Delray Beach, Wellington, Lake Worth, Greenacres, Palm
Springs, Atlantis, Village Of Golf, Dunes Road, Kings Point,
Loxahatchee NWR, Aberdeen, Lake Worth Corridor, Aberdeen Golf Course,
Florida Gardens, Seminole Manor and Villages Of Oriole.

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.

A funnel cloud was reported with this storm. 

&&

LAT...LON 2662 8007 2645 8012 2645 8032 2664 8026
TIME...MOT...LOC 1928Z 218DEG 4KT 2654 8019 

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

$$

Weinman

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 7:32 AM EDTSpecial Weather StatementMFLPalm Beach28 min
Aug 7, 7:37 AM EDTSpecial Marine WarningMFL23 min
Aug 7, 8:43 AM EDTAreal Flood AdvisoryMFLPalm Beach2 hr
Aug 7, 10:03 AM EDTSpecial Weather StatementMFLMiami-Dade27 min
Aug 7, 10:29 AM EDTSpecial Weather StatementMFLMiami-Dade31 min
Aug 7, 11:04 AM EDTSpecial Weather StatementMFLPalm Beach41 min
Aug 7, 1:54 PM EDTSpecial Weather StatementMFLHendry51 min
Aug 7, 2:48 PM EDTAreal Flood AdvisoryMFLCollier117 min
Aug 7, 3:18 PM EDTAreal Flood AdvisoryMFLPalm Beach117 min
Aug 7, 3:39 PM EDTSpecial Weather StatementMFLPalm Beach36 min
Aug 7, 3:48 PM EDTSpecial Weather StatementMFLMiami-Dade42 min
Aug 7, 4:04 PM EDTSpecial Weather StatementMFLPalm Beach41 min
Aug 7, 4:22 PM EDTAreal Flood AdvisoryMFLMiami-Dade113 min
Aug 7, 4:31 PM EDTSpecial Weather StatementMFLMiami-Dade44 min
Aug 7, 4:44 PM EDTSpecial Weather StatementMFLMiami-Dade46 min
Aug 7, 4:49 PM EDTSpecial Weather StatementMFLPalm Beach41 min
Aug 7, 5:02 PM EDTSpecial Weather StatementMFLBroward43 min
Aug 7, 5:41 PM EDTAreal Flood AdvisoryMFLBroward64 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.