Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 4, NWS Miami, FL

April 13, 2004Collier County, Monroe County, Florida

NWS Miami, FL issued this tornado warning at Apr 13, 2004, 1:55 AM EDT for Collier County, Monroe County, Florida. It was in force for 65 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: Apr 13, 2004, 1:55 AM EDT (05:55 UTC)
Expired: Apr 13, 2004, 3:00 AM EDT
In force: 65 min
Issued by: NWS Miami, FL
Area: Counties, with a storm outline in the text

Counties Collier County, FL, Monroe County, FL

The radar

The Miami radar (KAMX), 97 km from the middle of the area, began a volume at 05:54 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 00:00Z, 5.9 hours before the alert went out and 108 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 262 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1327 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

703 
WFUS52 KMFL 130555
TORMIA
FLC021-087-130700-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
155 AM EDT TUE APR 13 2004

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME SOUTH CENTRAL COLLIER COUNTY IN SOUTHWEST FLORIDA
  NORTHWESTERN MAINLAND MONROE COUNTY IN SOUTHWEST FLORIDA
  THIS INCLUDES THE CITY OF CHOKOLOSKEE

* UNTIL 300 AM EDT

* AT 149 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHWEST OF CHOKOLOSKEE...MOVING NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  CHOKOLOSKEE BY 200 AM 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.
GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE
BLANKETS OR PILLOWS TO COVER YOUR BODY AND STAY AWAY FROM WINDOWS.

LAT...LON 2577 8151 2561 8141 2574 8113 2591 8125

$$

HANDEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 12, 11:13 PM EDT	Special Marine Warning	MFL		2 hr
Apr 13, 1:10 AM EDT	Special Marine Warning	MFL		2 hr
Apr 13, 3:05 AM EDT	Tornado Warning	MFL	Collier	25 min
Apr 13, 4:10 AM EDT	Special Marine Warning	MFL		2 hr
Apr 13, 4:15 AM EDT	Tornado Warning	MFL	Broward	60 min
Apr 13, 4:29 AM EDT	Special Marine Warning	MFL		2 hr
Apr 13, 4:35 AM EDT	Tornado Warning	MFL	Collier	55 min
Apr 13, 5:20 AM EDT	Special Marine Warning	MFL		115 min
Apr 13, 5:38 AM EDT	Special Marine Warning	MFL		2 hr
Apr 13, 5:48 AM EDT	Special Marine Warning	MFL		42 min
Apr 13, 7:10 AM EDT	Special Marine Warning	MFL		65 min
Apr 13, 7:42 AM EDT	Special Marine Warning	MFL		93 min
Apr 13, 7:42 AM EDT	Special Marine Warning	MFL		93 min
Apr 13, 12:56 PM EDT	Special Marine Warning	MFL		49 min
Apr 13, 1:42 PM EDT	Severe Thunderstorm Warning	MFL	Collier	33 min
Apr 13, 2:00 PM EDT	Special Marine Warning	MFL		90 min
Apr 13, 2:34 PM EDT	Tornado Warning	MFL	Broward, Miami-Dade	56 min
Apr 13, 3:23 PM EDT	Special Marine Warning	MFL		2 hr
Apr 13, 3:23 PM EDT	Special Marine Warning	MFL		2 hr
Apr 13, 3:52 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	23 min

Nearby

Tornado Warnings in Florida, 2004 Every tornado warning in 2004 Tornadoes in 2004

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.