Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 85, NWS Miami, FL

June 15, 2012Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 15, 2012, 3:42 PM EDT for Miami-Dade County, Florida. It was in force for 33 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 15, 2012, 3:42 PM EDT (19:42 UTC)
Expired: Jun 15, 2012, 4:15 PM EDT
In force: 33 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 33 km from the middle of the area, began a volume at 19:43 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 15, 4:20 PM EDT	HAIL 1	Downtown Miami, FL	OFF-DUTY NWS EMPLOYEE REPORTED QUARTER SIZE HAIL NEAR BRICKEL AVE.
Jun 15, 4:20 PM EDT	HAIL 1.75	2 E Coral Gables, FL	TIME OF THE EVENT CORRECTED...GOLF BALL SIZED HAIL REPORTED AT COCONUT GROVE.

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, 7.7 hours before the alert went out and 9 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: 1194 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 805 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 48 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.

328 
WUUS52 KMFL 151942
SVRMFL
FLC086-152015-
/O.NEW.KMFL.SV.W.0085.120615T1942Z-120615T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
342 PM EDT FRI JUN 15 2012

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 415 PM EDT

* AT 339 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED   
  A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE   
  HAIL. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM CAROL  
  CITY TO MIAMI LAKES...AND MOVING SOUTHEAST AT 5 MPH.

* THE LINE OF STORMS WILL AFFECT...
  MIAMI LAKES...
  DORAL...
  NORTH MIAMI BEACH...
  NORTH MIAMI...
  MIAMI SHORES...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 58
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 2588 8014 2588 8015 2587 8016 2585 8016
      2586 8014 2585 8014 2585 8017 2576 8018
      2575 8017 2572 8023 2577 8039 2595 8034
      2593 8013
TIME...MOT...LOC 1940Z 312DEG 6KT 2592 8022 2590 8033

$$

KOB

1 follow-up statement

153 
WWUS52 KMFL 151959
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
359 PM EDT FRI JUN 15 2012

FLC086-152015-
/O.CON.KMFL.SV.W.0085.000000T0000Z-120615T2015Z/
MIAMI-DADE FL-
359 PM EDT FRI JUN 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHEASTERN MIAMI-DADE COUNTY...

AT 356 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE
HAIL. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NORTH
MIAMI TO HIALEAH...MOVING SOUTHEAST AT 5 MPH.

SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 58
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHERN FLORIDA.

LAT...LON 2588 8014 2588 8015 2587 8016 2585 8016
      2586 8014 2585 8014 2585 8017 2576 8018
      2575 8017 2572 8023 2577 8039 2595 8034
      2593 8013
TIME...MOT...LOC 1959Z 312DEG 6KT 2590 8019 2588 8030

$$

KOB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 14, 8:13 PM EDT	Special Weather Statement	MFL	Miami-Dade	62 min
Jun 14, 8:21 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	24 min
Jun 14, 8:28 PM EDT	Special Marine Warning	MFL		62 min
Jun 14, 8:39 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	51 min
Jun 14, 8:40 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Palm Beach	21 min
Jun 14, 9:00 PM EDT	Special Weather Statement	MFL	Miami-Dade	30 min
Jun 14, 9:03 PM EDT	Special Weather Statement	MFL	Broward	42 min
Jun 14, 9:07 PM EDT	Areal Flood Advisory	MFL	Miami-Dade	113 min
Jun 14, 9:25 PM EDT	Severe Thunderstorm Warning	MFL	Broward, Miami-Dade	35 min
Jun 14, 9:37 PM EDT	Special Weather Statement	MFL	Miami-Dade	23 min
Jun 14, 9:41 PM EDT	Special Marine Warning	MFL		64 min
Jun 14, 9:47 PM EDT	Special Weather Statement	MFL	Broward	43 min
Jun 14, 9:57 PM EDT	Special Marine Warning	MFL		48 min
Jun 15, 1:45 PM EDT	Special Marine Warning	MFL		27 min
Jun 15, 2:05 PM EDT	Special Weather Statement	MFL	Palm Beach	25 min
Jun 15, 2:41 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	34 min
Jun 15, 2:44 PM EDT	Special Marine Warning	MFL		61 min
Jun 15, 3:01 PM EDT	Special Weather Statement	MFL	Broward	29 min
Jun 15, 3:14 PM EDT	Severe Thunderstorm Warning	MFL	Broward	31 min
Jun 15, 3:33 PM EDT	Special Weather Statement	MFL	Palm Beach	27 min
Jun 15, 3:37 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	23 min
Jun 15, 3:48 PM EDT	Special Weather Statement	MFL	Broward	27 min
Jun 15, 3:57 PM EDT	Severe Thunderstorm Warning	MFL	Palm Beach	33 min
Jun 15, 3:59 PM EDT	Special Weather Statement	MFL	Glades	46 min
Jun 15, 4:16 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	29 min
Jun 15, 4:18 PM EDT	Special Weather Statement	MFL	Miami-Dade	42 min
Jun 15, 4:45 PM EDT	Special Weather Statement	MFL	Miami-Dade	30 min
Jun 15, 4:54 PM EDT	Special Weather Statement	MFL	Glades	51 min
Jun 15, 5:08 PM EDT	Special Weather Statement	MFL	Miami-Dade	37 min
Jun 15, 5:18 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade, Monroe	27 min
Jun 15, 5:19 PM EDT	Severe Thunderstorm Warning	MFL	Glades, Hendry	26 min
Jun 15, 5:32 PM EDT	Severe Thunderstorm Warning	MFL	Hendry	28 min
Jun 15, 5:42 PM EDT	Severe Thunderstorm Warning	MFL	Glades, Hendry	26 min
Jun 15, 5:57 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Hendry	63 min
Jun 15, 6:21 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Hendry	54 min
Jun 15, 7:14 PM EDT	Severe Thunderstorm Warning	MFL	Collier, Miami-Dade	31 min
Jun 15, 7:17 PM EDT	Special Weather Statement	MFL	Collier	28 min
Jun 15, 7:24 PM EDT	Severe Thunderstorm Warning	MFL	Collier	36 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.