Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 69, NWS Miami, FL

August 31, 2008Collier County, Florida

NWS Miami, FL issued this tornado warning at Aug 31, 2008, 7:12 AM EDT for Collier County, Florida. It was in force for 63 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
Aug 31, 2008, 7:12 AM EDT (11:12 UTC)
Expired
Aug 31, 2008, 8:15 AM EDT
In force
63 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Collier County, FL

The radar

The Miami radar (KAMX), 75 km from the middle of the area, began a volume at 11:12 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, 11.2 hours before the alert went out and 77 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 2008-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3266 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2008-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 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
3266 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
627 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
1.6
Supercell composite
9.3

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMFL 311112
TORMFL
FLC021-311215-
/O.NEW.KMFL.TO.W.0069.080831T1112Z-080831T1215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
712 AM EDT SUN AUG 31 2008

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN COLLIER COUNTY IN SOUTH FLORIDA.

* UNTIL 815 AM EDT

* AT 707 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES
  SOUTHEAST OF DADE-COLLIER TRAINING AIRPORT...MOVING NORTHWEST AT 30
  MPH.

  THIS STORM IS ALSO CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
  60 MPH.

* THE TORNADO WILL BE NEAR...
  DADE-COLLIER TRAINING AIRPORT...
  OASIS RANGER STATION...
  BIG CYPRESS NATIONAL PRESERVE...
  MILE MARKER 60 ON ALLIGATOR ALLEY...
  AND SURROUNDING COMMUNITIES.

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.
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 2608 8133 2621 8102 2595 8087 2595 8088
      2580 8088 2580 8097
TIME...MOT...LOC 1112Z 139DEG 26KT 2581 8086

$$

GR

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 30, 8:08 PM EDTSpecial Weather StatementMFLCollier37 min
Aug 30, 8:35 PM EDTSpecial Marine WarningMFL25 min
Aug 30, 8:39 PM EDTSpecial Weather StatementMFLPalm Beach36 min
Aug 30, 8:45 PM EDTSpecial Marine WarningMFL60 min
Aug 30, 10:37 PM EDTSpecial Marine WarningMFL53 min
Aug 31, 5:25 AM EDTHigh Surf AdvisoryMFLCollier35 hr
Aug 31, 6:14 AM EDTTornado WarningMFLCollier61 min
Aug 31, 6:37 AM EDTSpecial Weather StatementMFLMonroe23 min
Aug 31, 7:16 AM EDTSpecial Weather StatementMFLCollier74 min
Aug 31, 7:55 AM EDTTornado WarningMFLCollier, Miami-Dade65 min
Aug 31, 9:01 AM EDTSpecial Weather StatementMFLCollier59 min
Aug 31, 7:56 PM EDTSpecial Marine WarningMFL64 min

Nearby

Tornado Warnings in Florida, 2008Every tornado warning in 2008Tornadoes in 2008

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.