Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 17, NWS Miami, FL

March 11, 2008Collier County, Florida

NWS Miami, FL issued this tornado warning at Mar 11, 2008, 12:31 PM EDT for Collier County, Florida. It was in force for 20 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
Mar 11, 2008, 12:31 PM EDT (16:31 UTC)
Expired
Mar 11, 2008, 12:51 PM EDT
In force
20 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Collier County, FL

The radar

The Miami radar (KAMX), 95 km from the middle of the area, began a volume at 16:34 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 12:00Z, 4.5 hours before the alert went out and 101 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 2008-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 63 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 2008-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.1939587897Sfc1 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
63 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
749 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMFL 111631
TORMFL
FLC021-111700-
/O.NEW.KMFL.TO.W.0017.080311T1631Z-080311T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1231 PM EDT TUE MAR 11 2008

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 100 PM EDT

* AT 1228 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR EVERGLADES
  CITY...MOVING NORTHEAST AT 31 MPH.

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

* THE TORNADO WILL BE NEAR...

  CARNESTOWN...
  OCHOPEE...

AND SURROUNDING COMMUNITIES.

SOUTH FLORIDA TORNADOES MAY AT TIMES BE SMALL AND NARROW BUT THEY ARE
STILL DANGEROUS. THEY CAN EASILY FLIP A VEHICLE OR TRAILER OR CAUSE
LARGE TREES TO FALL. TAKE COVER INSIDE A STURDY BUILDING IMMEDIATELY.

LAT...LON 2608 8127 2594 8109 2583 8133 2584 8133
      2583 8134 2588 8143
TIME...MOT...LOC 1631Z 228DEG 27KT 2588 8136

$$

KOB
1 follow-up statement
000
WWUS52 KMFL 111651
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1249 PM EDT TUE MAR 11 2008

FLC021-111659-
/O.CAN.KMFL.TO.W.0017.000000T0000Z-080311T1700Z/
COLLIER FL-
1249 PM EDT TUE MAR 11 2008

...THE TORNADO WARNING FOR SOUTH CENTRAL COLLIER COUNTY IS
CANCELLED...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE TORNADO HAS
DISSIPATED. THUS THE TORNADO WARNING HAS BEEN CANCELLED.

HOWEVER, AN ISOLATED CLUSTER OF THUNDERSTORMS CONTINUE TO MOVE 
NORTHEAST AT 25 MPH NEAR OCHOPEE. OCCASIONAL LIGHTNING...GUSTY WINDS 
TO 40 MPH...BRIEF VERY HEAVY RAINFALL AND SMALL HAIL ARE STILL 
POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR THE 
LATEST UPDATES.

LAT...LON 2608 8127 2594 8109 2583 8133 2584 8133
      2583 8134 2588 8143
TIME...MOT...LOC 1649Z 228DEG 27KT 2597 8125

$$

KOB

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 11, 11:12 AM EDTSpecial Marine WarningMFL63 min
Mar 11, 1:42 PM EDTSpecial Weather StatementMFLBroward33 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.