Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 86, NWS Miami, FL

June 15, 2012Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 15, 2012, 3:57 PM EDT for Palm Beach County, Florida. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 15, 2012, 3:57 PM EDT (19:57 UTC)
Expired: Jun 15, 2012, 4:30 PM EDT
In force: 33 min
Issued by: NWS Miami, FL
Area: Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 127 km from the middle of the area, began a volume at 20:00 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 15, 3:56 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.0 hours before the alert went out and 103 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.

998 
WUUS52 KMFL 151957
SVRMFL
FLC099-152030-
/O.NEW.KMFL.SV.W.0086.120615T1957Z-120615T2030Z/

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

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA.

* UNTIL 430 PM EDT

* AT 356 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 5 MILES
  NORTHWEST OF ROYAL PALM BEACH...AND MOVING EAST AT 25 MPH.

* THE STORM WILL AFFECT...
  ROYAL PALM BEACH...
  GOLDEN LAKES...
  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 900 PM EDT FRIDAY
EVENING FOR SOUTHERN FLORIDA.

&&

LAT...LON 2680 8011 2661 8018 2669 8042 2683 8037
TIME...MOT...LOC 1957Z 286DEG 22KT 2675 8028

$$

GARCIA

1 follow-up statement

804 
WWUS52 KMFL 152029
SVSMFL

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

FLC099-152038-
/O.EXP.KMFL.SV.W.0086.000000T0000Z-120615T2030Z/
PALM BEACH FL-
429 PM EDT FRI JUN 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PALM BEACH COUNTY WILL
EXPIRE AT 430 PM EDT...

NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE THUNDERSTORM HAS
WEAKENED. THUS THE THUNDERSTORM WARNING WILL EXPIRE AT 430 PM EDT.

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

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

LAT...LON 2680 8011 2661 8018 2669 8042 2683 8037
TIME...MOT...LOC 2028Z 286DEG 22KT 2670 8008

$$

GARCIA

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, 3:42 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	33 min
Jun 15, 3:48 PM EDT	Special Weather Statement	MFL	Broward	27 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.