Alert archive / Florida / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 84, NWS Miami, FL

June 15, 2012Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 15, 2012, 3:37 PM EDT for Palm Beach County, Florida. It was in force for 23 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
Jun 15, 2012, 3:37 PM EDT (19:37 UTC)
Expired
Jun 15, 2012, 4:00 PM EDT
In force
23 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 128 km from the middle of the area, began a volume at 19:39 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

TimeReportWhereRemark
Jun 15, 3:50 PM EDTHAIL 0.75Lion Country Safari, FLPENNY SIZE HAIL REPORTED AT LION COUNTY SAFARI.

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, 7.6 hours before the alert went out and 104 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-pSkew-T log-p diagram, Miami, FL at 12:00Z on 2012-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1194 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2012-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

204 
WUUS52 KMFL 151937
SVRMFL
FLC099-152000-
/O.NEW.KMFL.SV.W.0084.120615T1937Z-120615T2000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
337 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 400 PM EDT

* AT 335 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL.  THIS
  STORM WAS LOCATED 3 MILES NORTH OF LION COUNTRY SAFARI...AND MOVING
  SOUTHEAST AT 15 MPH.

* THE STORM WILL AFFECT...
  LION COUNTRY SAFARI...
  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.

&&

LAT...LON 2680 8022 2664 8031 2672 8047 2682 8041
TIME...MOT...LOC 1937Z 293DEG 13KT 2676 8035

$$

GARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 8:13 PM EDTSpecial Weather StatementMFLMiami-Dade62 min
Jun 14, 8:21 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach24 min
Jun 14, 8:28 PM EDTSpecial Marine WarningMFL62 min
Jun 14, 8:39 PM EDTSevere Thunderstorm WarningMFLMiami-Dade51 min
Jun 14, 8:40 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach21 min
Jun 14, 9:00 PM EDTSpecial Weather StatementMFLMiami-Dade30 min
Jun 14, 9:03 PM EDTSpecial Weather StatementMFLBroward42 min
Jun 14, 9:07 PM EDTAreal Flood AdvisoryMFLMiami-Dade113 min
Jun 14, 9:25 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade35 min
Jun 14, 9:37 PM EDTSpecial Weather StatementMFLMiami-Dade23 min
Jun 14, 9:41 PM EDTSpecial Marine WarningMFL64 min
Jun 14, 9:47 PM EDTSpecial Weather StatementMFLBroward43 min
Jun 14, 9:57 PM EDTSpecial Marine WarningMFL48 min
Jun 15, 1:45 PM EDTSpecial Marine WarningMFL27 min
Jun 15, 2:05 PM EDTSpecial Weather StatementMFLPalm Beach25 min
Jun 15, 2:41 PM EDTSevere Thunderstorm WarningMFLPalm Beach34 min
Jun 15, 2:44 PM EDTSpecial Marine WarningMFL61 min
Jun 15, 3:01 PM EDTSpecial Weather StatementMFLBroward29 min
Jun 15, 3:14 PM EDTSevere Thunderstorm WarningMFLBroward31 min
Jun 15, 3:33 PM EDTSpecial Weather StatementMFLPalm Beach27 min
Jun 15, 3:42 PM EDTSevere Thunderstorm WarningMFLMiami-Dade33 min
Jun 15, 3:48 PM EDTSpecial Weather StatementMFLBroward27 min
Jun 15, 3:57 PM EDTSevere Thunderstorm WarningMFLPalm Beach33 min
Jun 15, 3:59 PM EDTSpecial Weather StatementMFLGlades46 min
Jun 15, 4:16 PM EDTSevere Thunderstorm WarningMFLMiami-Dade29 min
Jun 15, 4:18 PM EDTSpecial Weather StatementMFLMiami-Dade42 min
Jun 15, 4:45 PM EDTSpecial Weather StatementMFLMiami-Dade30 min
Jun 15, 4:54 PM EDTSpecial Weather StatementMFLGlades51 min
Jun 15, 5:08 PM EDTSpecial Weather StatementMFLMiami-Dade37 min
Jun 15, 5:18 PM EDTSevere Thunderstorm WarningMFLMiami-Dade, Monroe27 min
Jun 15, 5:19 PM EDTSevere Thunderstorm WarningMFLGlades, Hendry26 min
Jun 15, 5:32 PM EDTSevere Thunderstorm WarningMFLHendry28 min
Jun 15, 5:42 PM EDTSevere Thunderstorm WarningMFLGlades, Hendry26 min
Jun 15, 5:57 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry63 min
Jun 15, 6:21 PM EDTSevere Thunderstorm WarningMFLCollier, Hendry54 min
Jun 15, 7:14 PM EDTSevere Thunderstorm WarningMFLCollier, Miami-Dade31 min
Jun 15, 7:17 PM EDTSpecial Weather StatementMFLCollier28 min
Jun 15, 7:24 PM EDTSevere Thunderstorm WarningMFLCollier36 min

Nearby

Severe Thunderstorm Warnings in Florida, 2012Every 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.