Alert archive / Florida / Tornado Warnings in 2012

Tornado Warning 1, NWS Miami, FL

March 31, 2012Miami-Dade County, Florida

NWS Miami, FL issued this tornado warning at Mar 31, 2012, 3:27 PM EDT for Miami-Dade County, Florida. It was in force for 11 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 31, 2012, 3:27 PM EDT (19:27 UTC)
Expired
Mar 31, 2012, 3:38 PM EDT
In force
11 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 33 km from the middle of the area, began a volume at 19:27 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, 7.5 hours before the alert went out and 13 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 2012-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 754 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 2012-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.19395878Sfc1 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
754 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
617 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

365 
WFUS52 KMFL 311927
TORMFL
FLC086-312015-
/O.NEW.KMFL.TO.W.0001.120331T1927Z-120331T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MIAMI FL
327 PM EDT SAT MAR 31 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN MIAMI-DADE COUNTY IN SOUTHEAST FLORIDA...
  THIS INCLUDES THE CITIES OF...MIAMI BEACH...MIAMI...

* UNTIL 415 PM EDT

* AT 325 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MARLINS
  STADIUM...MOVING NORTHEAST AT 20 MPH.


* THE TORNADO WILL BE NEAR...
  LITTLE HAVANA...
  LIBERTY CITY...
  LITTLE HAITI...
  MIAMI BEACH...
  NORTH BAY VILLAGE...
  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 2589 8011 2580 8011 2576 8012 2573 8015
      2573 8017 2574 8017 2574 8020 2573 8022
      2573 8024 2579 8030 2591 8012 2591 8010
      2590 8010
TIME...MOT...LOC 1927Z 244DEG 18KT 2577 8023

$$

GREGORIA
1 follow-up statement
804 
WWUS52 KMFL 311938
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
338 PM EDT SAT MAR 31 2012

FLC086-311946-
/O.CAN.KMFL.TO.W.0001.000000T0000Z-120331T2015Z/
MIAMI-DADE FL-
338 PM EDT SAT MAR 31 2012

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

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE ROTATION 
IN THE THUNDERSTORM OVER MIAMI HAS WEAKENED. THEREFORE...THE TORNADO 
WARNING HAS BEEN CANCELLED.

WIND GUSTS OF 40 TO 45 MPH WILL BE POSSIBLE FROM MIAMI TO MIAMI 
BEACH WITH THIS THUNDERSTORM. 

LAT...LON 2589 8011 2580 8011 2576 8012 2573 8015
      2573 8017 2574 8017 2574 8020 2573 8022
      2573 8024 2579 8030 2591 8012 2591 8010
      2590 8010
TIME...MOT...LOC 1936Z 244DEG 18KT 2579 8018

$$

GREGORIA

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 31, 3:22 PM EDTSpecial Weather StatementMFLMiami-Dade23 min
Mar 31, 3:42 PM EDTSpecial Marine WarningMFL33 min
Mar 31, 3:44 PM EDTSpecial Marine WarningMFL35 min
Mar 31, 4:21 PM EDTSpecial Weather StatementMFLPalm Beach24 min

Nearby

Tornado Warnings in Florida, 2012Every tornado warning in 2012Tornadoes in 2012

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.