Alert archive / Florida / Tornado Warnings in 2005

Tornado Warning 8, NWS Miami, FL

September 20, 2005Miami-Dade County, Florida

NWS Miami, FL issued this tornado warning at Sep 20, 2005, 2:54 PM EDT for Miami-Dade County, Florida. It was in force for 36 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 20, 2005, 2:54 PM EDT (18:54 UTC)
Expired
Sep 20, 2005, 3:30 PM EDT
In force
36 min
Issued by
NWS Miami, FL
Area
Counties, with a storm outline in the text

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 74 km from the middle of the area, began a volume at 18:57 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 20, 4:40 AM EDTTornado WatchSPC12 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 6.9 hours before the alert went out and 98 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 2005-09-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 341 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 2005-09-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.193958Sfc1 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
341 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
850 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS52 KMFL 201855
TORMFL
FLC086-087-201930-
/O.NEW.KMFL.TO.W.0008.050920T1854Z-050920T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
254 PM EDT TUE SEP 20 2005

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME SOUTHWESTERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.           
  SOUTHERN AND CENTRAL MAINLAND MONROE COUNTY IN SOUTH FLORIDA.

* UNTIL 330 PM EDT

* AT 252 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES         
  NORTHEAST OF FLAMINGO...  MOVING NORTHWEST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL SOUTHERN AND CENTRAL MAINLAND MONROE COUNTY

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EDT TUESDAY AFTERNOON
FOR SOUTHERN FLORIDA.

LAT...LON 2511 8087 2517 8082 2552 8123 2534 8137

$$

DG
1 follow-up statement
000
WWUS52 KMFL 201913
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
311 PM EDT TUE SEP 20 2005

FLC086-087-201930-
/O.CON.KMFL.TO.W.0008.000000T0000Z-050920T1930Z/
MAINLAND MONROE FL-MIAMI-DADE FL-
311 PM EDT TUE SEP 20 2005

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR EXTREME 
SOUTHWESTERN MIAMI-DADE AND SOUTHERN MAINLAND MONROE COUNTIES...

AT 308 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED OVER SOUTHERN MAINLAND 
MONROE COUNTY ABOUT 14 MILES NORTHWEST OF FLAMINGO...MOVING WEST AT 
40 MPH. RADAR ALSO INDICATED A POSSIBLE DEVELOPING TORNADO OVER 
EXTREME SOUTHWEST MIAMI-DADE COUNTY 10 MILES EAST OF FLAMINGO MOVING 
NORTHWEST AT 40 MPH.

IF YOU ARE NEAR THE PATH OF THIS TORNADO...SEEK SHELTER IN A STURDY 
BUILDING ON THE LOWEST FLOOR...AWAY FROM OUTSIDE WALLS AND WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM EDT TUESDAY AFTERNOON
FOR SOUTHERN FLORIDA.

LAT...LON 2511 8087 2517 8082 2552 8123 2534 8137

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 2:13 PM EDTTornado WarningMFLBroward35 min
Sep 20, 4:30 PM EDTTornado WarningMFLMiami-Dade30 min
Sep 20, 5:01 PM EDTTornado WarningMFLCollier44 min

Nearby

Tornado Warnings in Florida, 2005Every tornado warning in 2005Tornadoes in 2005

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.