Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS Miami, FL

June 14, 2012Broward County, Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 14, 2012, 8:40 PM EDT for Broward County, Palm Beach County, Florida. It was in force for 21 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
Jun 14, 2012, 8:40 PM EDT (00:40 UTC)
Expired
Jun 14, 2012, 9:01 PM EDT
In force
21 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

Counties Broward County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 68 km from the middle of the area, began a volume at 00:39 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 00:00Z, 0.7 hours before the alert went out and 49 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 00:00Z on 2012-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2467 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 00:00Z on 2012-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
2467 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1233 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

736 
WUUS52 KMFL 150040
SVRMFL
FLC011-099-150115-
/O.NEW.KMFL.SV.W.0080.120615T0040Z-120615T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
840 PM EDT THU JUN 14 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL BROWARD COUNTY IN SOUTH FLORIDA.
  EXTREME SOUTH CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA.

* UNTIL 915 PM EDT

* AT 838 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES
  NORTH OF INTERSECTION ALLIGATOR ALLEY AND MIAMI CANAL...AND MOVING
  SOUTHEAST AT 10 MPH.

* THE STORM WILL AFFECT...
  INTERSECTION ALLIGATOR ALLEY AND MIAMI CANAL...
  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 2621 8035 2603 8059 2626 8068 2635 8057
TIME...MOT...LOC 0040Z 319DEG 8KT 2624 8059

$$

GARCIA
1 follow-up statement
990 
WWUS52 KMFL 150101
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
901 PM EDT THU JUN 14 2012

FLC011-099-150111-
/O.CAN.KMFL.SV.W.0080.000000T0000Z-120615T0115Z/
BROWARD FL-PALM BEACH FL-
901 PM EDT THU JUN 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTH CENTRAL PALM
BEACH AND CENTRAL BROWARD COUNTIES IS CANCELLED...

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

HOWEVER...THUNDERSTORMS REMAIN IN THE AREA. FREQUENT 
LIGHTNING...GUSTY WINDS TO 40 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 2621 8035 2603 8059 2626 8068 2635 8057
TIME...MOT...LOC 0101Z 319DEG 8KT 2620 8056

$$

GARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:13 PM EDTSpecial Weather StatementMFLMiami-Dade62 min
Jun 14, 8:21 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach24 min
Jun 14, 8:28 PM EDTSpecial Marine WarningMFL62 min
Jun 14, 8:39 PM EDTSevere Thunderstorm WarningMFLMiami-Dade51 min
Jun 14, 9:00 PM EDTSpecial Weather StatementMFLMiami-Dade30 min
Jun 14, 9:03 PM EDTSpecial Weather StatementMFLBroward42 min
Jun 14, 9:07 PM EDTAreal Flood AdvisoryMFLMiami-Dade113 min
Jun 14, 9:25 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade35 min
Jun 14, 9:37 PM EDTSpecial Weather StatementMFLMiami-Dade23 min
Jun 14, 9:41 PM EDTSpecial Marine WarningMFL64 min
Jun 14, 9:47 PM EDTSpecial Weather StatementMFLBroward43 min
Jun 14, 9:57 PM EDTSpecial Marine WarningMFL48 min
Jun 15, 1:45 PM EDTSpecial Marine WarningMFL27 min
Jun 15, 2:05 PM EDTSpecial Weather StatementMFLPalm Beach25 min
Jun 15, 2:41 PM EDTSevere Thunderstorm WarningMFLPalm Beach34 min
Jun 15, 2:44 PM EDTSpecial Marine WarningMFL61 min
Jun 15, 3:01 PM EDTSpecial Weather StatementMFLBroward29 min
Jun 15, 3:14 PM EDTSevere Thunderstorm WarningMFLBroward31 min
Jun 15, 3:33 PM EDTSpecial Weather StatementMFLPalm Beach27 min
Jun 15, 3:37 PM EDTSevere Thunderstorm WarningMFLPalm Beach23 min
Jun 15, 3:42 PM EDTSevere Thunderstorm WarningMFLMiami-Dade33 min
Jun 15, 3:48 PM EDTSpecial Weather StatementMFLBroward27 min
Jun 15, 3:57 PM EDTSevere Thunderstorm WarningMFLPalm Beach33 min
Jun 15, 3:59 PM EDTSpecial Weather StatementMFLGlades46 min
Jun 15, 4:16 PM EDTSevere Thunderstorm WarningMFLMiami-Dade29 min
Jun 15, 4:18 PM EDTSpecial Weather StatementMFLMiami-Dade42 min
Jun 15, 4:45 PM EDTSpecial Weather StatementMFLMiami-Dade30 min
Jun 15, 4:54 PM EDTSpecial Weather StatementMFLGlades51 min
Jun 15, 5:08 PM EDTSpecial Weather StatementMFLMiami-Dade37 min
Jun 15, 5:18 PM EDTSevere Thunderstorm WarningMFLMiami-Dade, Monroe27 min
Jun 15, 5:19 PM EDTSevere Thunderstorm WarningMFLGlades, Hendry26 min
Jun 15, 5:32 PM EDTSevere Thunderstorm WarningMFLHendry28 min
Jun 15, 5:42 PM EDTSevere Thunderstorm WarningMFLGlades, Hendry26 min
Jun 15, 5:57 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry63 min
Jun 15, 6:21 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry54 min
Jun 15, 7:14 PM EDTSevere Thunderstorm WarningMFLCollier, Miami-Dade31 min
Jun 15, 7:17 PM EDTSpecial Weather StatementMFLCollier28 min
Jun 15, 7:24 PM EDTSevere Thunderstorm WarningMFLCollier36 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.