Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 15, NWS Miami, FL

July 21, 2007Miami-Dade County, Florida

NWS Miami, FL issued this tornado warning at Jul 21, 2007, 3:14 PM EDT for Miami-Dade County, Florida. It was in force for 34 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 21, 2007, 3:14 PM EDT (19:14 UTC)
Expired
Jul 21, 2007, 3:48 PM EDT
In force
34 min
Issued by
NWS Miami, FL
Area
Counties, with a storm outline in the text

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 11 km from the middle of the area, began a volume at 19:17 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.

What was reported inside it

TimeReportWhereRemark
Jul 21, 3:20 PM EDTTORNADO2 W West Kendall, FLLAW ENFORCEMENT CONFIRMED A SMALL TORNADO OVER UNPOPULATED AREA A FEW MILES TO THE WEST OF WEST KENDALL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 21, 11:22 AM EDTSevere Thunderstorm WatchSPC10 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 7.2 hours before the alert went out and 31 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 2007-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1339 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 2007-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
1339 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1124 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
-2 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 211915
TORMFL
FLC086-212015-
/O.NEW.KMFL.TO.W.0015.070721T1914Z-070721T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
314 PM EDT SAT JUL 21 2007

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 415 PM EDT

* AT 313 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES
  NORTHWEST OF THE REDLAND...MOVING NORTHEAST AT 5 MPH.

  THIS STORM IS ALSO CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
  60 TO 70 MPH.

* THE TORNADO WILL BE NEAR...

  NARANJA...
  INTERSECTION KROME AND KENDALL DRIVE...
  GOULDS...
  PRINCETON...
  THE HAMMOCKS...
  WEST PERRINE...

AND SURROUNDING COMMUNITIES.

TRAINED SPOTTERS HAVE ALREADY REPORTED A FUNNEL CLOUD NEAR WEST 
KENDALL.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
SATURDAY EVENING FOR SOUTHERN FLORIDA.

LAT...LON 2568 8067 2550 8064 2551 8028 2577 8032

$$

70/DD
1 follow-up statement
000
WWUS52 KMFL 211948
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
348 PM EDT SAT JUL 21 2007

FLC086-211957-
/O.CAN.KMFL.TO.W.0015.000000T0000Z-070721T2015Z/
MIAMI-DADE FL-
348 PM EDT SAT JUL 21 2007

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

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE TORNADIC 
CIRCULATION ACROSS CENTRAL MIAMI-DADE COUNTY HAS DISSIPATED. THUS 
THE TORNADO WARNING HAS BEEN CANCELLED.

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
SATURDAY EVENING FOR SOUTHERN FLORIDA.

LAT...LON 2568 8067 2550 8064 2551 8028 2577 8032

$$

70/DD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 8:02 PM EDTMarine Weather StatementMFL58 min
Jul 20, 8:50 PM EDTSpecial Marine WarningMFL25 min
Jul 20, 9:39 PM EDTMarine Weather StatementMFL66 min
Jul 21, 10:32 AM EDTMarine Weather StatementMFL58 min
Jul 21, 1:22 PM EDTSevere Thunderstorm WarningMFLHendry53 min
Jul 21, 1:38 PM EDTSevere Thunderstorm WarningMFLGlades58 min
Jul 21, 1:42 PM EDTSpecial Marine WarningMFL2 hr
Jul 21, 2:17 PM EDTSevere Thunderstorm WarningMFLHendry, Palm Beach50 min
Jul 21, 2:27 PM EDTSevere Thunderstorm WarningMFLPalm Beach63 min
Jul 21, 2:35 PM EDTAreal Flood AdvisoryMFLPalm Beach3 hr
Jul 21, 3:04 PM EDTSevere Thunderstorm WarningMFLBroward56 min
Jul 21, 3:13 PM EDTSevere Thunderstorm WarningMFLPalm Beach37 min
Jul 21, 3:20 PM EDTSevere Thunderstorm WarningMFLMiami-Dade55 min
Jul 21, 3:27 PM EDTTornado WarningMFLPalm Beach15 min
Jul 21, 3:59 PM EDTSevere Thunderstorm WarningMFLBroward61 min
Jul 21, 7:31 PM EDTMarine Weather StatementMFL59 min

Nearby

Tornado Warnings in Florida, 2007Every tornado warning in 2007Tornadoes in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.