Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 19, NWS Miami, FL

May 14, 2012Broward County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 14, 2012, 4:46 PM EDT for Broward County, Florida. It was in force for 29 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: May 14, 2012, 4:46 PM EDT (20:46 UTC)
Expired: May 14, 2012, 5:15 PM EDT
In force: 29 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Broward County, FL

The radar

The Miami radar (KAMX), 61 km from the middle of the area, began a volume at 20:46 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
May 14, 5:03 PM EDT	TSTM WND GST 60	Nw Weston, FL	AT 503 PM EDT A MEMBER OF THE PUBLIC REPORTED ESTIMATED WIND SPEEDS OF 39 KTS...OR 45 MPH...WITH GUSTS TO 52 KTS...OR 60 MPH... NEAR THE INTERSECTION OF GLADES PARKWAY AND INTERSTATE 75 IN NORTHWEST WESTON.

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, 8.8 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-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: 1180 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 24 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.

294 
WUUS52 KMFL 142046
SVRMFL
FLC011-142115-
/O.NEW.KMFL.SV.W.0019.120514T2046Z-120514T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
446 PM EDT MON MAY 14 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 515 PM EDT

* AT 445 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 3 MILES
  WEST OF SAWGRASS MILLS MALL...AND MOVING SOUTHEAST AT 15 MPH.

* THE STORM WILL AFFECT...
  WESTON...
  SAWGRASS MILLS MALL...
  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 2616 8024 2604 8043 2617 8047 2626 8036
TIME...MOT...LOC 2046Z 315DEG 12KT 2616 8037

$$

GARCIA

1 follow-up statement

986 
WWUS52 KMFL 142106
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
506 PM EDT MON MAY 14 2012

FLC011-142115-
/O.CON.KMFL.SV.W.0019.000000T0000Z-120514T2115Z/
BROWARD FL-
506 PM EDT MON MAY 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR WESTERN BROWARD COUNTY...

AT 503 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED. THIS STORM WAS
LOCATED NEAR MARKHAM PARK...MOVING SOUTHEAST AT 15 MPH.

THE PUBLIC REPORTED ESTIMATED 60 MPH WIND GUSTS AT THE INTERSECTION 
OF GLADES PARKWAY AND I-75 IN WESTON.

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 2622 8038 2616 8024 2604 8043 2615 8046
TIME...MOT...LOC 2104Z 315DEG 12KT 2612 8032

$$

GARCIA

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 8:53 AM EDT	Special Marine Warning	MFL		22 min
May 14, 10:33 AM EDT	Special Marine Warning	MFL		27 min
May 14, 3:32 PM EDT	Special Weather Statement	MFL	Broward	28 min
May 14, 3:50 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	25 min
May 14, 4:17 PM EDT	Special Weather Statement	MFL	Broward	43 min
May 14, 4:53 PM EDT	Special Weather Statement	MFL	Palm Beach	22 min
May 14, 5:16 PM EDT	Severe Thunderstorm Warning	MFL	Broward	29 min
May 14, 6:16 PM EDT	Special Weather Statement	MFL	Glades	29 min
May 14, 6:46 PM EDT	Special Weather Statement	MFL	Glades	29 min
May 14, 6:51 PM EDT	Special Marine Warning	MFL		54 min
May 14, 7:19 PM EDT	Special Weather Statement	MFL	Glades	26 min
May 14, 7:25 PM EDT	Severe Thunderstorm Warning	MFL	Glades	38 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.