Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 31, NWS Miami, FL

August 18, 2008Broward County, Collier County, Miami-Dade County, Florida

NWS Miami, FL issued this tornado warning at Aug 18, 2008, 4:40 PM EDT for Broward County, Collier County, Miami-Dade 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
Aug 18, 2008, 4:40 PM EDT (20:40 UTC)
Expired
Aug 18, 2008, 5:00 PM EDT
In force
20 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

Counties Broward County, FL, Collier County, FL, Miami-Dade County, FL

The radar

The Miami radar (KAMX), 37 km from the middle of the area, began a volume at 20:39 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
Aug 18, 12:30 PM EDTTornado WatchSPC10 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.7 hours before the alert went out and 49 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 2008-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2466 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2008-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939Sfc1 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
2466 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
776 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
59 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 182040
TORMFL
FLC011-021-086-182100-
/O.NEW.KMFL.TO.W.0031.080818T2040Z-080818T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
440 PM EDT MON AUG 18 2008

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN BROWARD COUNTY IN SOUTH FLORIDA.
  WESTERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.
  SOUTHEASTERN COLLIER COUNTY IN SOUTH FLORIDA.

* UNTIL 500 PM EDT

* AT 439 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR REDLAND...
  MOVING NORTHWEST AT 36 MPH.


* THE TORNADO WILL BE NEAR...
  HOMESTEAD GENERAL AIRPORT...
  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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT MONDAY EVENING
FOR SOUTHERN FLORIDA.

LAT...LON 2539 8055 2574 8088 2580 8088 2580 8093
      2597 8108 2612 8084 2549 8039
TIME...MOT...LOC 2040Z 144DEG 31KT 2552 8053

$$

GARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 8:02 PM EDTSpecial Marine WarningMFL28 min
Aug 17, 8:32 PM EDTSpecial Marine WarningMFL28 min
Aug 18, 2:15 AM EDTSpecial Weather StatementMFLMiami-Dade, Monroe75 min
Aug 18, 2:30 AM EDTFlood WatchMFLBroward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more42 hr
Aug 18, 3:30 AM EDTSpecial Weather StatementMFLMiami-Dade, Monroe75 min
Aug 18, 6:19 AM EDTInland Tropical Storm WarningMFLBroward, Collier, Glades, Hendry, Miami-Dade, Palm Beach43 hr
Aug 18, 6:19 AM EDTTropical Storm WarningMFL43 hr
Aug 18, 6:19 AM EDTTropical Storm WarningMFLBroward, Collier, Miami-Dade, Monroe, Palm Beach36 hr
Aug 18, 6:43 AM EDTSpecial Marine WarningMFL47 min
Aug 18, 8:36 AM EDTSpecial Marine WarningMFL24 min
Aug 18, 8:42 AM EDTSpecial Weather StatementMFLBroward48 min
Aug 18, 8:58 AM EDTSpecial Marine WarningMFL32 min
Aug 18, 9:08 AM EDTSpecial Weather StatementMFLMiami-Dade52 min
Aug 18, 9:17 AM EDTTornado WarningMFLMiami-Dade28 min
Aug 18, 9:23 AM EDTSpecial Marine WarningMFL67 min
Aug 18, 10:17 AM EDTSpecial Weather StatementMFLPalm Beach28 min
Aug 18, 10:43 AM EDTSpecial Marine WarningMFL32 min
Aug 18, 10:58 AM EDTSpecial Weather StatementMFLMiami-Dade32 min
Aug 18, 11:05 AM EDTSpecial Marine WarningMFL25 min
Aug 18, 11:24 AM EDTSpecial Weather StatementMFLPalm Beach51 min
Aug 18, 11:52 AM EDTHurricane WarningMFL18 hr
Aug 18, 11:52 AM EDTHurricane WarningMFLCollier, Monroe18 hr
Aug 18, 12:11 PM EDTSpecial Weather StatementMFLMiami-Dade34 min
Aug 18, 2:25 PM EDTSpecial Marine WarningMFL65 min
Aug 18, 2:52 PM EDTTornado WarningMFLMiami-Dade23 min
Aug 18, 3:01 PM EDTTornado WarningMFLMiami-Dade29 min
Aug 18, 3:42 PM EDTSpecial Marine WarningMFL33 min
Aug 18, 4:13 PM EDTSpecial Marine WarningMFL92 min
Aug 18, 4:24 PM EDTSpecial Marine WarningMFL36 min
Aug 18, 4:43 PM EDTSpecial Marine WarningMFL47 min
Aug 18, 5:23 PM EDTSpecial Marine WarningMFL37 min
Aug 18, 5:23 PM EDTTornado WarningMFLPalm Beach22 min
Aug 18, 5:34 PM EDTSpecial Marine WarningMFL86 min
Aug 18, 5:45 PM EDTTornado WarningMFLBroward15 min
Aug 18, 6:12 PM EDTSpecial Marine WarningMFL63 min
Aug 18, 7:22 PM EDTSpecial Marine WarningMFL53 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.