Alert archive / Florida / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 2, NWS Miami, FL

February 12, 2014Broward County, Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Feb 12, 2014, 4:43 PM EST for Broward County, Miami-Dade County, Florida. It was in force for 32 min. 4 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: Feb 12, 2014, 4:43 PM EST (21:43 UTC)
Expired: Feb 12, 2014, 5:15 PM EST
In force: 32 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

Counties Broward County, FL, Miami-Dade County, FL

The radar

The Miami radar (KAMX), 54 km from the middle of the area, began a volume at 21:46 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
Feb 12, 4:46 PM EST	HAIL 1	1 W Carol City, FL	HAIL AT LEAST THE SIZE OF QUARTERS WAS REPORTED THROUGH SOCIAL MEDIA IN CAROL CITY.
Feb 12, 4:46 PM EST	HAIL 1	Carol City, FL	HAIL AT LEAST THE SIZE OF QUARTERS WAS REPORTED THROUGH SOCIAL MEDIA IN CAROL CITY.
Feb 12, 4:48 PM EST	HAIL 0.75	2 Nnw Carol City, FL	DIME SIZED HAIL WAS REPORTED THROUGH SOCIAL MEDIA IN MIAMI GARDENS
Feb 12, 5:00 PM EST	TSTM WND GST 61	1 Wnw Cooper City, FL	BRANCHES DOWN AND ESTIMATED WIND GUST RECEIVED VIA SOCIAL MEDIA.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Feb 12, 3:06 PM EST	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 9.7 hours before the alert went out and 29 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: 164 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 879 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

248 
WUUS52 KMFL 122143
SVRMFL
FLC011-086-122215-
/O.NEW.KMFL.SV.W.0002.140212T2143Z-140212T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
443 PM EST WED FEB 12 2014

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BROWARD COUNTY IN SOUTH FLORIDA.
  NORTHEASTERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.

* UNTIL 515 PM EST

* AT 442 PM EST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR CAROL CITY...AND MOVING
  NORTH AT 25 MPH.

* THE STORM WILL AFFECT...
  MIAMI GARDENS...
  MIRAMAR PARKWAY AND UNIVERSITY DRIVE...
  PINES BLVD AND UNIVERSITY DRIVE...
  COOPER CITY...
  NOVA SOUTHEASTERN UNIVERSITY...
  PLANTATION...
  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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EST
WEDNESDAY EVENING FOR SOUTHERN FLORIDA.

&&

LAT...LON 2624 8037 2620 8011 2587 8021 2587 8037
TIME...MOT...LOC 2143Z 190DEG 22KT 2594 8027

$$
KONARIK

2 follow-up statements

531 
WWUS52 KMFL 122203
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
503 PM EST WED FEB 12 2014

FLC086-122212-
/O.CAN.KMFL.SV.W.0002.000000T0000Z-140212T2215Z/
MIAMI-DADE FL-
503 PM EST WED FEB 12 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MIAMI-DADE COUNTY
IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EST
WEDNESDAY EVENING FOR SOUTHERN FLORIDA.

LAT...LON 2600 8020 2600 8030 2623 8034 2620 8011
      2613 8013
TIME...MOT...LOC 2202Z 190DEG 22KT 2605 8025

$$

FLC011-122215-
/O.CON.KMFL.SV.W.0002.000000T0000Z-140212T2215Z/
BROWARD FL-
503 PM EST WED FEB 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EST
FOR EAST CENTRAL BROWARD COUNTY...

AT 501 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 70 MPH. THIS STORM WAS LOCATED NEAR COOPER CITY...MOVING NORTH AT
25 MPH.

THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY FROM
WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EST
WEDNESDAY EVENING FOR SOUTHERN FLORIDA.

LAT...LON 2600 8020 2600 8030 2623 8034 2620 8011
      2613 8013
TIME...MOT...LOC 2202Z 190DEG 22KT 2605 8025

$$
KONARIK

653 
WWUS52 KMFL 122211
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
511 PM EST WED FEB 12 2014

FLC011-122221-
/O.EXP.KMFL.SV.W.0002.000000T0000Z-140212T2215Z/
BROWARD FL-
511 PM EST WED FEB 12 2014

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BROWARD COUNTY
WILL EXPIRE AT 515 PM EST...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS
WEAKENED. THUS THE THUNDERSTORM WARNING WILL EXPIRE AT 515 PM EST.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EST
WEDNESDAY EVENING FOR SOUTHERN FLORIDA.

LAT...LON 2600 8020 2600 8030 2623 8034 2620 8011
      2613 8013
TIME...MOT...LOC 2211Z 190DEG 22KT 2610 8024

$$
KONARIK

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 12, 5:09 AM EST	Dense Fog Advisory	MFL	Glades, Hendry	3 hr
Feb 12, 3:26 PM EST	Small Craft Advisory	MFL		31 hr
Feb 12, 4:05 PM EST	Special Weather Statement	MFL	Miami-Dade	25 min
Feb 12, 4:32 PM EST	Special Weather Statement	MFL	Broward	28 min
Feb 12, 4:48 PM EST	Special Marine Warning	MFL		57 min
Feb 12, 5:11 PM EST	Special Weather Statement	MFL	Broward	34 min
Feb 12, 5:39 PM EST	Special Marine Warning	MFL		96 min
Feb 12, 6:18 PM EST	Special Marine Warning	MFL		87 min

Nearby

Severe Thunderstorm Warnings in Florida, 2014 Every severe thunderstorm warning in 2014

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.