Alert archive / Florida / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 35, NWS Miami, FL

May 20, 2016Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 20, 2016, 5:33 PM EDT for Palm Beach County, Florida. It was in force for 27 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
May 20, 2016, 5:33 PM EDT (21:33 UTC)
Expired
May 20, 2016, 6:00 PM EDT
In force
27 min
Issued by
NWS Miami, FL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 117 km from the middle of the area, began a volume at 21:33 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 nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 9.6 hours before the alert went out and 96 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 2016-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1254 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 2016-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 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
1254 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
940 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

494 
WUUS52 KMFL 202133
SVRMFL
FLC099-202200-
/O.NEW.KMFL.SV.W.0035.160520T2133Z-160520T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
533 PM EDT FRI MAY 20 2016

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 600 PM EDT

* AT 533 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BELLE GLADE
  CAMP...OR OVER BELLE GLADE...MOVING EAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WELLINGTON...BELLE GLADE...SOUTH BAY...BELLE GLADE CAMP AND LION
  COUNTRY SAFARI PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 2654 8068 2673 8074 2689 8035 2659 8023
TIME...MOT...LOC 2133Z 254DEG 27KT 2667 8066 

HAIL...0.75IN
WIND...60MPH
 
$$

ALM
2 follow-up statements
563 
WWUS52 KMFL 202146
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
546 PM EDT FRI MAY 20 2016

FLC099-202200-
/O.CON.KMFL.SV.W.0035.000000T0000Z-160520T2200Z/
PALM BEACH FL-
546 PM EDT FRI MAY 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR CENTRAL PALM BEACH COUNTY...

AT 546 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BELLE GLADE...
MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WELLINGTON...BELLE GLADE...LION COUNTRY SAFARI PARK...
LOXAHATCHEE GROVES AND THE ACREAGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
MOVE INDOORS IMMEDIATELY. LIGHTNING IS ONE OF NATURE'S LEADING
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

&&

LAT...LON 2658 8068 2672 8066 2680 8031 2659 8023
      2655 8056
TIME...MOT...LOC 2146Z 279DEG 34KT 2665 8058 

HAIL...0.75IN
WIND...60MPH
 
$$

ALM
138 
WWUS52 KMFL 202157
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
557 PM EDT FRI MAY 20 2016

FLC099-202207-
/O.EXP.KMFL.SV.W.0035.000000T0000Z-160520T2200Z/
PALM BEACH FL-
557 PM EDT FRI MAY 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PALM BEACH COUNTY WILL
EXPIRE AT 600 PM EDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY
WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 2658 8068 2672 8066 2680 8031 2659 8023
      2655 8056
TIME...MOT...LOC 2156Z 254DEG 27KT 2665 8058 

$$

ALM

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 5:45 AM EDTSpecial Marine WarningMFL45 min
May 20, 4:11 PM EDTSpecial Weather StatementMFLPalm Beach49 min
May 20, 4:15 PM EDTSpecial Weather StatementMFLHendry75 min
May 20, 4:17 PM EDTSevere Thunderstorm WarningMFLGlades, Hendry28 min
May 20, 4:21 PM EDTSpecial Marine WarningMFL114 min
May 20, 5:04 PM EDTSpecial Weather StatementMFLBroward, Palm Beach56 min
May 20, 5:09 PM EDTSevere Thunderstorm WarningMFLHendry, Palm Beach39 min
May 20, 6:02 PM EDTSpecial Weather StatementMFLBroward, Palm Beach73 min
May 20, 6:08 PM EDTSpecial Marine WarningMFL2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2016Every severe thunderstorm warning in 2016

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.