Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 68, NWS Miami, FL

June 6, 2012Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 6, 2012, 8:38 AM EDT for Miami-Dade County, Florida. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 6, 2012, 8:38 AM EDT (12:38 UTC)
Expired: Jun 6, 2012, 9:15 AM EDT
In force: 37 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 22 km from the middle of the area, began a volume at 12:42 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.

What was reported inside it

Time	Report	Where	Remark
Jun 6, 8:44 AM EDT	HAIL 0.25	E Cutler Ridge, FL	A MEMBER OF THE PUBLIC REPORTED PEA-SIZED HAIL FELL FOR THE PAST 5-10 MINUTES IN THE CUTLER BAY AREA...ENDING AT 844 AM EDT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 0.6 hours before the alert went out and 14 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2953 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 722 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

291 
WUUS52 KMFL 061238
SVRMFL
FLC086-061315-
/O.NEW.KMFL.SV.W.0068.120606T1238Z-120606T1315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
838 AM EDT WED JUN 6 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL MIAMI-DADE COUNTY IN SOUTH FLORIDA.

* UNTIL 915 AM EDT

* AT 833 AM 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
  CUTLER BAY...AND MOVING NORTHEAST AT 20 MPH.

* THE STORM WILL AFFECT...
  PALMETTO BAY...
  PINECREST...
  UNIVERSITY OF MIAMI...
  CORAL GABLES...
  COCONUT GROVE...
  MARLINS PARK...
  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.

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. IF
OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES AND
AVOID WATER. MOVE INDOORS OR INSIDE A VEHICLE IF POSSIBLE. AVOID
USING THE TELEPHONE UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG
UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.

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.

&&

LAT...LON 2566 8016 2568 8018 2574 8017 2574 8020
      2572 8024 2564 8026 2561 8030 2556 8030
      2558 8041 2582 8039 2581 8018 2576 8018
      2575 8016 2581 8015 2581 8012
TIME...MOT...LOC 1237Z 208DEG 17KT 2560 8033

$$

BAXTER

3 follow-up statements

860 
WWUS52 KMFL 061248
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
848 AM EDT WED JUN 6 2012

FLC086-061315-
/O.CON.KMFL.SV.W.0068.000000T0000Z-120606T1315Z/
MIAMI-DADE FL-
848 AM EDT WED JUN 6 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM EDT
FOR EAST CENTRAL MIAMI-DADE COUNTY...

AT 842 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH...AND LARGE HAIL GREATER THAN QUARTER SIZE.
THIS STORM WAS LOCATED NEAR PERRINE...MOVING NORTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
PINECREST...
UNIVERSITY OF MIAMI...
CORAL GABLES...
COCONUT GROVE...
MIAMI...
MIAMI BEACH...
KEY BISCAYNE...
  AND SURROUNDING COMMUNITIES.

SEVERE THUNDERSTORMS CAN ALSO PRODUCE TORNADOES WITH LITTLE OR NO
ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN AN INTERIOR
ROOM IN THE LOWEST FLOOR OF YOUR HOUSE OR BUSINESS IF A TORNADO IS
SPOTTED.

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.

LAT...LON 2566 8016 2568 8018 2574 8017 2574 8020
      2572 8024 2564 8026 2561 8030 2560 8030
      2561 8036 2577 8032 2581 8018 2576 8018
      2575 8016 2581 8015 2581 8012
TIME...MOT...LOC 1246Z 215DEG 19KT 2564 8029

$$

BAXTER

232 
WWUS52 KMFL 061256
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
856 AM EDT WED JUN 6 2012

FLC086-061315-
/O.CON.KMFL.SV.W.0068.000000T0000Z-120606T1315Z/
MIAMI-DADE FL-
856 AM EDT WED JUN 6 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM EDT
FOR EAST CENTRAL MIAMI-DADE COUNTY...

AT 854 AM 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 KEY BISCAYNE...MOVING
NORTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
KEY BISCAYNE...
DOWNTOWN MIAMI...
MIAMI BEACH...
  AND SURROUNDING COMMUNITIES.

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.

LAT...LON 2580 8015 2580 8013 2566 8016 2568 8018
      2574 8017 2574 8020 2573 8021 2573 8024
      2576 8023 2576 8018 2575 8016 2579 8015
TIME...MOT...LOC 1256Z 221DEG 21KT 2569 8022

$$

BAXTER

843 
WWUS52 KMFL 061310
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
910 AM EDT WED JUN 6 2012

FLC086-061320-
/O.EXP.KMFL.SV.W.0068.000000T0000Z-120606T1315Z/
MIAMI-DADE FL-
910 AM EDT WED JUN 6 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MIAMI-DADE COUNTY
WILL EXPIRE AT 915 AM EDT...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS
MOVED OUT OF THE WARNED AREA. THUS THE THUNDERSTORM WARNING WILL
EXPIRE AT 915 AM EDT.

LAT...LON 2580 8015 2580 8013 2566 8016 2568 8018
      2574 8017 2574 8020 2573 8021 2573 8024
      2576 8023 2576 8018 2575 8016 2579 8015
TIME...MOT...LOC 1310Z 221DEG 21KT 2575 8016

$$

BAXTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 2:56 AM EDT	Special Weather Statement	MFL	Collier	49 min
Jun 6, 3:02 AM EDT	Special Marine Warning	MFL		58 min
Jun 6, 3:21 AM EDT	Special Weather Statement	MFL	Collier	24 min
Jun 6, 3:41 AM EDT	Severe Thunderstorm Warning	MFL	Collier, Hendry	34 min
Jun 6, 3:47 AM EDT	Special Weather Statement	MFL	Collier	43 min
Jun 6, 4:12 AM EDT	Special Weather Statement	MFL	Collier, Hendry	48 min
Jun 6, 4:19 AM EDT	Special Weather Statement	MFL	Hendry	41 min
Jun 6, 4:35 AM EDT	Severe Thunderstorm Warning	MFL	Glades, Hendry, Palm Beach	40 min
Jun 6, 4:37 AM EDT	Special Weather Statement	MFL	Broward	23 min
Jun 6, 4:59 AM EDT	Special Marine Warning	MFL		68 min
Jun 6, 5:05 AM EDT	Special Marine Warning	MFL		85 min
Jun 6, 5:14 AM EDT	Special Weather Statement	MFL	Collier	46 min
Jun 6, 5:24 AM EDT	Severe Thunderstorm Warning	MFL	Collier	51 min
Jun 6, 5:31 AM EDT	Special Weather Statement	MFL	Collier	44 min
Jun 6, 5:39 AM EDT	Severe Thunderstorm Warning	MFL	Collier	42 min
Jun 6, 5:42 AM EDT	Tornado Warning	MFL	Collier	28 min
Jun 6, 5:55 AM EDT	Special Weather Statement	MFL	Palm Beach	35 min
Jun 6, 6:19 AM EDT	Special Weather Statement	MFL	Palm Beach	41 min
Jun 6, 6:44 AM EDT	Special Weather Statement	MFL	Palm Beach	31 min
Jun 6, 6:47 AM EDT	Special Marine Warning	MFL		58 min
Jun 6, 7:01 AM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	44 min
Jun 6, 7:18 AM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	27 min
Jun 6, 7:29 AM EDT	Special Weather Statement	MFL	Miami-Dade	46 min
Jun 6, 7:33 AM EDT	Special Weather Statement	MFL	Miami-Dade	42 min
Jun 6, 7:36 AM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	39 min
Jun 6, 7:40 AM EDT	Special Marine Warning	MFL		65 min
Jun 6, 7:40 AM EDT	Special Weather Statement	MFL	Palm Beach	35 min
Jun 6, 7:54 AM EDT	Special Marine Warning	MFL		66 min
Jun 6, 8:02 AM EDT	Special Weather Statement	MFL	Broward	28 min
Jun 6, 8:05 AM EDT	Severe Thunderstorm Warning	MFL	Broward	16 min
Jun 6, 8:08 AM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	37 min
Jun 6, 8:37 AM EDT	Special Marine Warning	MFL		53 min
Jun 6, 8:49 AM EDT	Special Marine Warning	MFL		56 min
Jun 6, 8:52 AM EDT	Special Weather Statement	MFL	Palm Beach	23 min
Jun 6, 9:02 AM EDT	Special Weather Statement	MFL	Miami-Dade	28 min
Jun 6, 2:24 PM EDT	Special Marine Warning	MFL		66 min
Jun 6, 2:37 PM EDT	Special Weather Statement	MFL	Broward	23 min
Jun 6, 3:05 PM EDT	Special Weather Statement	MFL	Palm Beach	25 min
Jun 6, 3:10 PM EDT	Special Marine Warning	MFL		35 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.