Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 52, NWS Miami, FL

June 19, 2011Broward County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 19, 2011, 2:39 PM EDT for Broward County, Florida. It was in force for 26 min. 2 reports 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 19, 2011, 2:39 PM EDT (18:39 UTC)
Expired: Jun 19, 2011, 3:05 PM EDT
In force: 26 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Broward County, FL

The radar

The Miami radar (KAMX), 73 km from the middle of the area, began a volume at 18:41 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 19, 2:50 PM EDT	TSTM WND GST 60	Coral Springs, FL	SKYWARN SPOTTER REPORTED WINDS OF AT LEAST 60 MPH AND PINE TREES DOWN AT EAGLE TRACE GOLF CLUB.
Jun 19, 2:50 PM EDT	HAIL 1.25	Coral Springs, FL	SKYWARN SPOTTER REPORTED HALF DOLLAR SIZE HAIL IN CORAL SPRINGS.

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, 6.7 hours before the alert went out and 48 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: 2730 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

596 
WUUS52 KMFL 191839
SVRMFL
FLC011-191930-
/O.NEW.KMFL.SV.W.0052.110619T1839Z-110619T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
239 PM EDT SUN JUN 19 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL BROWARD COUNTY IN SOUTH FLORIDA.

* UNTIL 330 PM EDT

* AT 237 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  DETECTED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING
  QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM CORAL SPRINGS TO 3
  MILES WEST OF SAWGRASS MILLS MALL...AND MOVING EAST AT 5 MPH.

* THE LINE OF STORMS WILL AFFECT...
  CORAL SPRINGS...
  PARKLAND...
  TAMARAC...
  SUNRISE...
  MARGATE...
  NORTH LAUDERDALE...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 60
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 2631 8014 2609 8024 2614 8041 2633 8033
      2633 8023
TIME...MOT...LOC 1839Z 285DEG 6KT 2630 8030 2616 8037

$$

GREGORIA

1 follow-up statement

266 
WWUS52 KMFL 191905
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
305 PM EDT SUN JUN 19 2011

FLC011-191914-
/O.CAN.KMFL.SV.W.0052.000000T0000Z-110619T1930Z/
BROWARD FL-
305 PM EDT SUN JUN 19 2011

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

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

THUNDERSTORMS REMAIN IN THE AREA. FREQUENT LIGHTNING AND GUSTY WINDS 
TO 40 MPH ARE STILL POSSIBLE. STAY TUNED TO NOAA WEATHER RADIO OR 
LOCAL MEDIA FOR THE LATEST UPDATES.

LAT...LON 2631 8014 2609 8024 2614 8041 2633 8033
      2633 8023
TIME...MOT...LOC 1904Z 285DEG 6KT 2629 8026 2615 8033

$$

GREGORIA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 19, 2:12 PM EDT	Special Weather Statement	MFL	Palm Beach	48 min
Jun 19, 2:36 PM EDT	Special Weather Statement	MFL	Broward	24 min
Jun 19, 2:42 PM EDT	Special Weather Statement	MFL	Palm Beach	33 min
Jun 19, 3:02 PM EDT	Special Weather Statement	MFL	Monroe	43 min
Jun 19, 3:09 PM EDT	Special Weather Statement	MFL	Broward	51 min
Jun 19, 3:32 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Miami-Dade	43 min
Jun 19, 3:36 PM EDT	Special Weather Statement	MFL	Miami-Dade	24 min
Jun 19, 3:45 PM EDT	Special Marine Warning	MFL		90 min
Jun 19, 4:12 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	54 min
Jun 19, 4:20 PM EDT	Special Weather Statement	MFL	Broward	25 min
Jun 19, 4:44 PM EDT	Special Weather Statement	MFL	Broward	46 min
Jun 19, 4:45 PM EDT	Special Marine Warning	MFL		2 hr
Jun 19, 4:48 PM EDT	Special Weather Statement	MFL	Miami-Dade	27 min
Jun 19, 5:16 PM EDT	Special Marine Warning	MFL		41 min
Jun 19, 5:17 PM EDT	Special Weather Statement	MFL	Hendry	43 min
Jun 19, 5:49 PM EDT	Special Weather Statement	MFL	Hendry	26 min
Jun 19, 6:23 PM EDT	Special Weather Statement	MFL	Glades	37 min
Jun 19, 7:00 PM EDT	Special Weather Statement	MFL	Hendry	30 min
Jun 19, 7:34 PM EDT	Special Marine Warning	MFL		43 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011 Every severe thunderstorm warning in 2011

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.