Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 56, NWS Miami, FL

May 29, 2012Broward County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 29, 2012, 6:28 PM EDT for Broward County, Florida. It was in force for 31 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 29, 2012, 6:28 PM EDT (22:28 UTC)
Expired
May 29, 2012, 6:59 PM EDT
In force
31 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 22:31 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, 10.5 hours before the alert went out and 38 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 2012-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1097 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 2012-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
1097 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
866 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
113 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.

577 
WUUS52 KMFL 292228
SVRMFL
FLC011-292315-
/O.NEW.KMFL.SV.W.0056.120529T2228Z-120529T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
628 PM EDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BROWARD COUNTY IN SOUTH FLORIDA.

* UNTIL 715 PM EDT

* AT 626 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR   
  FORT LAUDERDALE...AND MOVING NORTHEAST AT 15 MPH. A SPOTTER        
  ESTIMATED WINDS OF 55 MPH NEAR PLANTATION.

* THE STORM WILL AFFECT...
  LAUDERHILL...
  LAUDERDALE LAKES...
  FORT LAUDERDALE...
  PORT EVERGLADES...
  WILTON MANORS...
  LAUDERDALE BY THE SEA...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 58 MPH AND
OR LARGE HAIL. FREQUENT TO EXCESSIVE LIGHTNING AND HEAVY RAINFALL IS
ALSO POSSIBLE. IF THE STORM APPROACHES YOUR LOCATION, SEEK SHELTER IN
AN ENCLOSED BUILDING ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. OR YOU CAN
ALSO CALL THE NATIONAL WEATHER SERVICE IN MIAMI DIRECTLY AT
305.229.4528 TO REPORT SEVERE WEATHER.

&&

LAT...LON 2615 8010 2613 8009 2601 8011 2599 8012
      2598 8024 2618 8033 2631 8007 2629 8007
TIME...MOT...LOC 2228Z 239DEG 12KT 2611 8019

$$

AK
2 follow-up statements
943 
WWUS52 KMFL 292241
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
641 PM EDT TUE MAY 29 2012

FLC011-292315-
/O.CON.KMFL.SV.W.0056.000000T0000Z-120529T2315Z/
BROWARD FL-
641 PM EDT TUE MAY 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR EAST CENTRAL BROWARD COUNTY...

AT 635 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL...AND 
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR 
WILTON MANNERS...MOVING NORTHEAST AT 25 MPH.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. A SPOTTER 
ESTIMATED WINDS OF 60 MPH NEAR WILTON MANNERS. SEEK SHELTER NOW 
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT. THEY WILL RELAY YOUR REPORT TO
THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. OR YOU CAN
ALSO CALL THE NATIONAL WEATHER SERVICE IN MIAMI DIRECTLY AT
305.229.4528 TO REPORT SEVERE WEATHER.

LAT...LON 2615 8010 2613 8009 2601 8011 2602 8012
      2601 8023 2621 8027 2631 8007 2629 8007
TIME...MOT...LOC 2240Z 237DEG 21KT 2614 8013

$$

AK
403 
WWUS52 KMFL 292259
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
659 PM EDT TUE MAY 29 2012

FLC011-292309-
/O.CAN.KMFL.SV.W.0056.000000T0000Z-120529T2315Z/
BROWARD FL-
659 PM EDT TUE MAY 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BROWARD COUNTY IS
CANCELLED...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS 
WEAKENED. THUS THE THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 2615 8010 2613 8009 2601 8011 2602 8012
      2601 8023 2621 8027 2631 8007 2629 8007
TIME...MOT...LOC 2259Z 237DEG 21KT 2620 8003

$$

AK

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 12:41 PM EDTSpecial Weather StatementMFLMiami-Dade64 min
May 29, 1:21 PM EDTSpecial Weather StatementMFLMiami-Dade24 min
May 29, 1:28 PM EDTSpecial Marine WarningMFL53 min
May 29, 1:44 PM EDTSpecial Weather StatementMFLBroward61 min
May 29, 2:28 PM EDTSpecial Weather StatementMFLPalm Beach62 min
May 29, 2:41 PM EDTSevere Thunderstorm WarningMFLPalm Beach49 min
May 29, 2:46 PM EDTSpecial Marine WarningMFL89 min
May 29, 3:27 PM EDTSpecial Weather StatementMFLPalm Beach33 min
May 29, 4:57 PM EDTSpecial Weather StatementMFLMiami-Dade33 min
May 29, 5:35 PM EDTSpecial Marine WarningMFL55 min
May 29, 5:42 PM EDTAreal Flood AdvisoryMFLMiami-Dade66 min
May 29, 5:59 PM EDTSpecial Weather StatementMFLBroward31 min
May 29, 6:23 PM EDTSpecial Marine WarningMFL67 min
May 29, 6:35 PM EDTSpecial Marine WarningMFL38 min
May 29, 6:43 PM EDTSpecial Weather StatementMFLPalm Beach47 min
May 29, 7:10 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach35 min
May 29, 7:20 PM EDTSpecial Marine WarningMFL33 min
May 29, 7:39 PM EDTSpecial Weather StatementMFLPalm Beach51 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Every severe thunderstorm warning 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.