Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 7, NWS Miami, FL

April 13, 2004Collier County, Florida

NWS Miami, FL issued this tornado warning at Apr 13, 2004, 4:35 AM EDT for Collier County, Florida. It was in force for 55 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, 4:35 AM EDT (08:35 UTC)
Expired
Apr 13, 2004, 5:30 AM EDT
In force
55 min
Issued by
NWS Miami, FL
Area
Counties, with a storm outline in the text

County Collier County, FL

The radar

The Miami radar (KAMX), 127 km from the middle of the area, began a volume at 08:38 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
Apr 13, 2:45 AM EDTTornado WatchSPC5 hr

The nearest sounding before it

Miami, FL (KMFL), launched 00:00Z, 8.6 hours before the alert went out and 133 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 00:00Z on 2004-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 262 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 00:00Z on 2004-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.19395878Sfc1 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
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.

050 
WFUS52 KMFL 130835
TORMIA
FLC021-130930-

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

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN COLLIER COUNTY IN SOUTHWEST FLORIDA
  THIS INCLUDES THE CITY OF MARCO ISLAND

* UNTIL 530 AM EDT

* AT 428 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MARCO      
  ISLAND MOVING NORTHEAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BELLE
  MEADE...ROYAL PALM HAMMOCK AND COPELAND.

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 2597 8185 2584 8149 2606 8126 2624 8155

$$

HANDEL

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 11:13 PM EDTSpecial Marine WarningMFL2 hr
Apr 13, 1:10 AM EDTSpecial Marine WarningMFL2 hr
Apr 13, 1:55 AM EDTTornado WarningMFLCollier, Monroe65 min
Apr 13, 3:05 AM EDTTornado WarningMFLCollier25 min
Apr 13, 4:10 AM EDTSpecial Marine WarningMFL2 hr
Apr 13, 4:15 AM EDTTornado WarningMFLBroward60 min
Apr 13, 4:29 AM EDTSpecial Marine WarningMFL2 hr
Apr 13, 5:20 AM EDTSpecial Marine WarningMFL115 min
Apr 13, 5:38 AM EDTSpecial Marine WarningMFL2 hr
Apr 13, 5:48 AM EDTSpecial Marine WarningMFL42 min
Apr 13, 7:10 AM EDTSpecial Marine WarningMFL65 min
Apr 13, 7:42 AM EDTSpecial Marine WarningMFL93 min
Apr 13, 7:42 AM EDTSpecial Marine WarningMFL93 min
Apr 13, 12:56 PM EDTSpecial Marine WarningMFL49 min
Apr 13, 1:42 PM EDTSevere Thunderstorm WarningMFLCollier33 min
Apr 13, 2:00 PM EDTSpecial Marine WarningMFL90 min
Apr 13, 2:34 PM EDTTornado WarningMFLBroward, Miami-Dade56 min
Apr 13, 3:23 PM EDTSpecial Marine WarningMFL2 hr
Apr 13, 3:23 PM EDTSpecial Marine WarningMFL2 hr
Apr 13, 3:52 PM EDTSevere Thunderstorm WarningMFLMiami-Dade23 min

Nearby

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