Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Miami, FL

September 6, 2021Miami-Dade County, Florida

NWS Miami, FL issued this special weather statement at Sep 6, 2021, 5:13 PM EDT for Miami-Dade County, Florida. It was in force for 47 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
Sep 6, 2021, 5:13 PM EDT (21:13 UTC)
Expired
Sep 6, 2021, 6:00 PM EDT
In force
47 min
Issued by
NWS Miami, FL
Hail
0.00 in
Wind
40

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 13 km from the middle of the area, began a volume at 21:13 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, 9.2 hours before the alert went out and 16 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 2021-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 966 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 2021-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
966 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
995 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
-10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

713 
WWUS82 KMFL 062113
SPSMFL

Special Weather Statement
National Weather Service Miami FL
513 PM EDT Mon Sep 6 2021
 
FLZ071>074-172-173-062200-
Inland Broward County FL-Coastal Broward County FL-
Metro Broward County FL-Metropolitan Miami Dade FL-Inland Miami-
Dade County FL-Coastal Miami Dade County FL-
513 PM EDT Mon Sep 6 2021

...A strong thunderstorm will impact portions of northern Miami-Dade
and southern Broward Counties through 600 PM EDT...

At 513 PM EDT, National Weather Service meteorologists were tracking
a strong thunderstorm over Doral, or near Hialeah, moving southeast
at 5 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Miami, Hialeah, Pembroke Pines, Hollywood, Miramar, Davie, Coral
Gables, South Miami, Hallandale, Miami Gardens, The Redland, Kendall,
Weston, North Miami, Doral, North Miami Beach, Aventura, Miami Lakes,
Cooper City and Hialeah Gardens.

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 this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2548 8039 2553 8072 2611 8042 2602 8012
TIME...MOT...LOC 2113Z 293DEG 8KT 2583 8036 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

SPM

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 5:45 PM EDTAreal Flood AdvisoryMFLMiami-Dade2 hr
Sep 6, 5:48 PM EDTSevere Thunderstorm WarningMFLMiami-Dade25 min
Sep 6, 5:54 PM EDTSpecial Weather StatementMFLBroward51 min
Sep 6, 6:06 PM EDTSpecial Weather StatementMFLMiami-Dade39 min
Sep 6, 6:40 PM EDTSpecial Weather StatementMFLMiami-Dade50 min
Sep 6, 7:01 PM EDTAreal Flood AdvisoryMFLMiami-Dade119 min
Sep 6, 7:17 PM EDTAreal Flood AdvisoryMFLMiami-Dade118 min
Sep 6, 7:34 PM EDTSpecial Weather StatementMFLBroward, Palm Beach26 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.