Alert archive / Florida / Tornado Warnings in 2009

Tornado Warning 5, NWS Miami, FL

May 24, 2009Miami-Dade County, Florida

NWS Miami, FL issued this tornado warning at May 24, 2009, 11:54 AM EDT for Miami-Dade County, Florida. It was in force for 30 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
May 24, 2009, 11:54 AM EDT (15:54 UTC)
Expired
May 24, 2009, 12:24 PM EDT
In force
30 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 32 km from the middle of the area, began a volume at 15:57 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, 3.9 hours before the alert went out and 23 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 2009-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2000 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 2009-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 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
2000 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
869 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
-39 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 241554
TORMFL
FLC086-241700-
/O.NEW.KMFL.TO.W.0005.090524T1554Z-090524T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1154 AM EDT SUN MAY 24 2009

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL MIAMI-DADE COUNTY IN SOUTH FLORIDA.

* UNTIL 100 PM EDT

* AT 1154 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER NORTH      
  CENTRAL MIAMI-DADE COUNTY. THIS STORM WAS NEARLY STATIONARY.

  THIS STORM IS ALSO CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE TORNADO WILL BE NEAR...
  RURAL NORTHERN MIAMI-DADE COUNTY
  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.

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.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR COULD POSSIBLY DEVELOP ANYTIME. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

LAT...LON 2581 8056 2592 8058 2596 8048 2595 8044
      2586 8042
TIME...MOT...LOC 1553Z 340DEG 3KT 2586 8050

$$

70/DD
1 follow-up statement
854 
WWUS52 KMFL 241624
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1224 PM EDT SUN MAY 24 2009

FLC086-241634-
/O.CAN.KMFL.TO.W.0005.000000T0000Z-090524T1700Z/
MIAMI-DADE FL-
1224 PM EDT SUN MAY 24 2009

...THE TORNADO WARNING FOR NORTH CENTRAL MIAMI-DADE COUNTY IS
CANCELLED...

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

HOWEVER...DANGEROUS THUNDERSTORMS REMAIN IN THE AREA. FREQUENT 
LIGHTNING...GUSTY WINDS TO 40 MPH...VERY HEAVY RAINFALL AND SMALL 
HAIL ARE STILL POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL 
MEDIA FOR THE LATEST UPDATES.

LAT...LON 2581 8056 2592 8058 2596 8048 2595 8044
      2586 8042
TIME...MOT...LOC 1624Z 340DEG 3KT 2584 8049

$$

70/DD

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 11:16 AM EDTSpecial Weather StatementMFLBroward29 min
May 24, 11:48 AM EDTSpecial Weather StatementMFLBroward42 min
May 24, 12:18 PM EDTSpecial Weather StatementMFLCollier27 min
May 24, 12:45 PM EDTSpecial Weather StatementMFLCollier45 min
May 24, 1:11 PM EDTSpecial Weather StatementMFLCollier49 min
May 24, 1:26 PM EDTSevere Thunderstorm WarningMFLCollier49 min
May 24, 2:21 PM EDTSpecial Weather StatementMFLHendry39 min
May 24, 2:27 PM EDTSpecial Weather StatementMFLGlades48 min
May 24, 3:22 PM EDTSpecial Weather StatementMFLGlades53 min
May 24, 3:30 PM EDTSpecial Weather StatementMFLMiami-Dade60 min
May 24, 3:40 PM EDTSpecial Weather StatementMFLMiami-Dade65 min
May 24, 4:01 PM EDTSpecial Weather StatementMFLMiami-Dade119 min
May 24, 4:14 PM EDTSevere Thunderstorm WarningMFLMiami-Dade61 min
May 24, 5:27 PM EDTSpecial Weather StatementMFLMiami-Dade63 min
May 24, 5:36 PM EDTSpecial Weather StatementMFLCollier54 min
May 24, 6:46 PM EDTSpecial Weather StatementMFLHendry59 min

Nearby

Tornado Warnings in Florida, 2009Every tornado warning in 2009Tornadoes in 2009

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.