Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 16, NWS Miami, FL

May 10, 2012Broward County, Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 10, 2012, 4:33 PM EDT for Broward County, Palm Beach County, Florida. It was in force for 22 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 10, 2012, 4:33 PM EDT (20:33 UTC)
Expired
May 10, 2012, 4:55 PM EDT
In force
22 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

Counties Broward County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 81 km from the middle of the area, began a volume at 20:35 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, 8.6 hours before the alert went out and 56 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 2012-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1025 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 2012-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
1025 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
728 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

217 
WUUS52 KMFL 102033
SVRMFL
FLC011-099-102115-
/O.NEW.KMFL.SV.W.0016.120510T2033Z-120510T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
433 PM EDT THU MAY 10 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 515 PM EDT

* AT 430 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 5 MILES
  WEST OF MISSION BAY...AND MOVING EAST AT 30 MPH.

* THE STORM WILL AFFECT...
  CORAL SPRINGS...
  MISSION BAY...
  COCONUT CREEK...
  LAUDERDALE LAKES...
  BOCA RATON...
  HILLSBORO BEACH...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 58
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 2629 8007 2607 8011 2627 8048 2651 8035
      2645 8005
TIME...MOT...LOC 2033Z 284DEG 26KT 2639 8027

$$

AK
2 follow-up statements
186 
WWUS52 KMFL 102047
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
447 PM EDT THU MAY 10 2012

FLC011-099-102115-
/O.CON.KMFL.SV.W.0016.000000T0000Z-120510T2115Z/
BROWARD FL-PALM BEACH FL-
447 PM EDT THU MAY 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR SOUTHEASTERN PALM BEACH AND NORTHEASTERN BROWARD COUNTIES...

AT 444 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR COCONUT CREEK...MOVING
SOUTHEAST AT 35 MPH.

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 2644 8005 2629 8007 2608 8011 2613 8022
      2623 8041 2648 8018 2647 8014
TIME...MOT...LOC 2047Z 302DEG 34KT 2625 8015

$$

AK
082 
WWUS52 KMFL 102055
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
455 PM EDT THU MAY 10 2012

FLC011-099-102105-
/O.CAN.KMFL.SV.W.0016.000000T0000Z-120510T2115Z/
BROWARD FL-PALM BEACH FL-
455 PM EDT THU MAY 10 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PALM BEACH AND
NORTHEASTERN BROWARD COUNTIES IS 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.

LAT...LON 2644 8005 2629 8007 2608 8011 2613 8022
      2623 8041 2648 8018 2647 8014
TIME...MOT...LOC 2055Z 302DEG 34KT 2621 8008

$$

AK

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 2:22 PM EDTSpecial Weather StatementMFLHendry38 min
May 10, 2:34 PM EDTSpecial Marine WarningMFL56 min
May 10, 2:59 PM EDTSpecial Weather StatementMFLHendry31 min
May 10, 3:19 PM EDTSpecial Weather StatementMFLBroward41 min
May 10, 3:22 PM EDTSpecial Marine WarningMFL38 min
May 10, 3:29 PM EDTSpecial Weather StatementMFLPalm Beach31 min
May 10, 3:30 PM EDTSpecial Weather StatementMFLPalm Beach45 min
May 10, 3:36 PM EDTSevere Thunderstorm WarningMFLPalm Beach39 min
May 10, 4:02 PM EDTSpecial Weather StatementMFLBroward43 min
May 10, 4:03 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach42 min
May 10, 4:11 PM EDTSpecial Marine WarningMFL64 min
May 10, 4:35 PM EDTSpecial Marine WarningMFL55 min
May 10, 5:30 PM EDTSpecial Marine WarningMFL60 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.