Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Miami, FL

April 29, 2011Broward County, Florida

NWS Miami, FL issued this special weather statement at Apr 29, 2011, 4:13 PM EDT for Broward County, Florida. It was in force for 47 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
Apr 29, 2011, 4:13 PM EDT (20:13 UTC)
Expired
Apr 29, 2011, 5:00 PM EDT
In force
47 min
Issued by
NWS Miami, FL

County Broward County, FL

The radar

The Miami radar (KAMX), 70 km from the middle of the area, began a volume at 20:15 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, 8.2 hours before the alert went out and 44 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 2011-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1633 joules per kilogram.LCLLFCEL10008507005003002001001 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 2011-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
1633 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
743 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-7 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.

380 
WWUS82 KMFL 292013
SPSMFL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
413 PM EDT FRI APR 29 2011

FLZ067-068-071-072-074-168-172-173-292100-
INLAND PALM BEACH COUNTY FL-METRO PALM BEACH COUNTY FL-
COASTAL PALM BEACH COUNTY FL-INLAND BROWARD COUNTY FL-
METRO BROWARD COUNTY FL-METROPOLITAN MIAMI DADE FL-
COASTAL BROWARD COUNTY FL-COASTAL MIAMI-DADE COUNTY FL-
413 PM EDT FRI APR 29 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  EASTERN BROWARD COUNTY 
  EXTREME NORTHEASTERN MIAMI-DADE COUNTY 
  SOUTHEASTERN PALM BEACH COUNTY 

* UNTIL 500 PM EDT

* AT 412 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM MISSION
  BAY TO INTERSECTION U.S. 27 PINES BLVD...AND MOVING EAST AT 15 MPH.

* THE LINE OF STORMS WILL AFFECT...
  WESTON...
  MARGATE...
  COCONUT CREEK...
  BOCA RATON...
  DAVIE...
  LAUDERDALE LAKES...
  AND SURROUNDING COMMUNITIES.

FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS FROM 45 T0 55 MPH...UP
TO NICKEL-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF
THESE ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

LAT...LON 2629 8007 2618 8010 2601 8011 2592 8014
      2602 8051 2642 8021 2643 8006
TIME...MOT...LOC 2013Z 283DEG 13KT 2635 8017 2604 8044

$$
GARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 3:03 PM EDTSpecial Weather StatementMFLBroward27 min
Apr 29, 3:06 PM EDTSpecial Weather StatementMFLMiami-Dade24 min
Apr 29, 3:23 PM EDTSpecial Weather StatementMFLMiami-Dade52 min
Apr 29, 3:33 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade27 min
Apr 29, 3:34 PM EDTSpecial Marine WarningMFL56 min
Apr 29, 3:54 PM EDTSevere Thunderstorm WarningMFLMiami-Dade27 min
Apr 29, 4:02 PM EDTAreal Flood AdvisoryMFLMiami-Dade3 hr
Apr 29, 4:08 PM EDTSpecial Marine WarningMFL67 min
Apr 29, 4:46 PM EDTAreal Flood AdvisoryMFLBroward, Palm Beach119 min
Apr 29, 4:47 PM EDTSpecial Weather StatementMFLHendry43 min
Apr 29, 4:53 PM EDTSpecial Weather StatementMFLBroward82 min
Apr 29, 5:00 PM EDTSpecial Weather StatementMFLMiami-Dade30 min
Apr 29, 5:09 PM EDTSpecial Marine WarningMFL66 min
Apr 29, 5:25 PM EDTSpecial Weather StatementMFLHendry65 min
Apr 29, 5:38 PM EDTSpecial Weather StatementMFLPalm Beach22 min
Apr 29, 6:04 PM EDTSpecial Weather StatementMFLBroward56 min
Apr 29, 6:10 PM EDTSpecial Marine WarningMFL65 min
Apr 29, 6:18 PM EDTSpecial Weather StatementMFLCollier57 min
Apr 29, 6:23 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry27 min
Apr 29, 7:03 PM EDTSpecial Weather StatementMFLMiami-Dade42 min
Apr 29, 7:04 PM EDTSpecial Weather StatementMFLCollier41 min

Nearby

Special Weather Statements in Florida, 2011Every special weather statement in 2011

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.