Alert archive / Florida / Tornado Warnings in 2005

Tornado Warning 9, NWS Miami, FL

September 20, 2005Miami-Dade County, Florida

NWS Miami, FL issued this tornado warning at Sep 20, 2005, 4:30 PM EDT for Miami-Dade County, Florida. It was in force for 30 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, 4:30 PM EDT (20:30 UTC)
Expired
Sep 20, 2005, 5:00 PM EDT
In force
30 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), 30 km from the middle of the area, began a volume at 20:30 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, 4:30 PM EDTTornado WatchSPC9 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.5 hours before the alert went out and 53 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 202031
TORMFL
FLC086-202100-
/O.NEW.KMFL.TO.W.0009.050920T2030Z-050920T2100Z/

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

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME SOUTHERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.

* UNTIL 500 PM EDT

* AT 425 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  TORNADO NEAR ROYAL PALM RANGER STATION...OR ABOUT 7 MILES          
  SOUTHWEST OF HOMESTEAD...MOVING NORTHWEST AT 40 MPH.

* THE TORNADO WILL BE NEAR...
  ROYAL PALM RANGER STATION
  SHARK VALLEY OBS TOWER

IF YOU ARE NEAR THE PATH OF A 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. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
100 AM EDT WEDNESDAY MORNING FOR SOUTHERN FLORIDA.

LAT...LON 2532 8059 2547 8047 2575 8085 2557 8087

$$
1 follow-up statement
000
WWUS52 KMFL 202047
SVSMFL

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

FLC086-202100-
/O.CON.KMFL.TO.W.0009.000000T0000Z-050920T2100Z/
MIAMI-DADE FL-
445 PM EDT TUE SEP 20 2005

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR SOUTH 
CENTRAL MIAMI-DADE COUNTY...

AT 443 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED OVER THE EVERGLADES 7 
MILES NORTH OF ROYAL PALM RANGER STATION...OR ABOUT 10 MILES WEST OF 
HOMESTEAD...MOVING NORTHWEST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  SHARK VALLEY OBS TOWER BY 455 PM EDT

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 IS IN EFFECT UNTIL 1 AM EDT WEDNESDAY MORNING FOR 
PORTIONS OF SOUTH FLORIDA.

LAT...LON 2532 8059 2547 8047 2575 8085 2557 8087

$$

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, 2:54 PM EDTTornado WarningMFLMiami-Dade36 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.