Alert archive / Florida / Tornado Warnings in 2013

Tornado Warning 2, NWS Miami, FL

April 20, 2013Broward County, Florida

NWS Miami, FL issued this tornado warning at Apr 20, 2013, 4:57 PM EDT for Broward County, Florida. It was in force for 18 min. 3 reports 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
Apr 20, 2013, 4:57 PM EDT (20:57 UTC)
Expired
Apr 20, 2013, 5:15 PM EDT
In force
18 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Broward County, FL

The radar

The Miami radar (KAMX), 64 km from the middle of the area, began a volume at 20:58 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
Apr 20, 5:06 PM EDTTSTM WND GST 492 Sse Lauderhill, FLWEATHERBUG SITE AT PARKWAY MS REPORTED A WIND GUST OF 49 MPH.
Apr 20, 5:09 PM EDTTSTM WND GST 511 Wnw Fort Lauderdale, FLWEATHERBUG SITE AT FT. LAUDERDALE POLICE DEPARTMENT REPORTED A WIND GUST OF 51 MPH.
Apr 20, 5:15 PM EDTTSTM WND GST 481 Ese Fort Lauderdale, FLWEATHERBUG SITE AT KC WRIGHT ADMIN BUILDING REPORTED A WIND GUST OF 48 MPH.

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

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 9.0 hours before the alert went out and 37 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 2013-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1124 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 2013-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
1124 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
825 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
21 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.

541 
WFUS52 KMFL 202057
TORMFL
FLC011-202115-
/O.NEW.KMFL.TO.W.0002.130420T2057Z-130420T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
457 PM EDT SAT APR 20 2013

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL BROWARD COUNTY IN SOUTHEAST FLORIDA...
  THIS INCLUDES THE CITY OF FORT LAUDERDALE...

* UNTIL 515 PM EDT

* AT 455 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR            
  LAUDERHILL...MOVING EAST AT 15 MPH. THIS STORM IS ALSO CAPABLE     
  OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.

* THE TORNADO WILL BE NEAR...
  LAUDERHILL...
  FORT LAUDERDALE...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEEK SHELTER INSIDE A STURDY BUILDING ON THE LOWEST FLOOR...AWAY FROM
EXTERIOR WALLS AND WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

&&

LAT...LON 2606 8011 2613 8026 2616 8026 2620 8009
      2619 8009
TIME...MOT...LOC 2057Z 278DEG 14KT 2614 8023

$$
1 follow-up statement
266 
WWUS52 KMFL 202111
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
511 PM EDT SAT APR 20 2013

FLC011-202121-
/O.EXP.KMFL.TO.W.0002.000000T0000Z-130420T2115Z/
BROWARD FL-
511 PM EDT SAT APR 20 2013

...THE TORNADO WARNING FOR EAST CENTRAL BROWARD COUNTY WILL EXPIRE AT
515 PM EDT...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE TORNADO HAS
DISSIPATED. THUS THE TORNADO WARNING WILL EXPIRE AT 515 PM EDT.

LAT...LON 2606 8011 2613 8026 2616 8026 2620 8009
      2619 8009
TIME...MOT...LOC 2111Z 278DEG 14KT 2613 8017

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 20, 12:37 PM EDTSpecial Weather StatementMFLMiami-Dade23 min
Apr 20, 1:31 PM EDTSpecial Weather StatementMFLMiami-Dade44 min
Apr 20, 1:57 PM EDTSpecial Marine WarningMFL63 min
Apr 20, 2:40 PM EDTSpecial Weather StatementMFLMiami-Dade50 min
Apr 20, 2:56 PM EDTSpecial Marine WarningMFL64 min
Apr 20, 3:22 PM EDTSpecial Weather StatementMFLPalm Beach38 min
Apr 20, 4:16 PM EDTSpecial Weather StatementMFLBroward29 min
Apr 20, 4:36 PM EDTSpecial Weather StatementMFLGlades24 min
Apr 20, 4:42 PM EDTSpecial Marine WarningMFL63 min
Apr 20, 4:49 PM EDTSpecial Weather StatementMFLBroward41 min
Apr 20, 5:06 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade24 min
Apr 20, 5:20 PM EDTAreal Flood AdvisoryMFLBroward115 min
Apr 20, 5:23 PM EDTSpecial Marine WarningMFL67 min
Apr 20, 5:28 PM EDTSpecial Marine WarningMFL62 min
Apr 20, 5:28 PM EDTSpecial Weather StatementMFLBroward62 min
Apr 20, 6:23 PM EDTSpecial Marine WarningMFL67 min
Apr 20, 7:19 PM EDTAreal Flood AdvisoryMFLCollier116 min

Nearby

Tornado Warnings in Florida, 2013Every tornado warning in 2013Tornadoes in 2013

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.