Alert archive / Florida / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 13, NWS Miami, FL

June 5, 2018Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 5, 2018, 7:30 PM EDT for Palm Beach County, Florida. It was in force for 30 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
Jun 5, 2018, 7:30 PM EDT (23:30 UTC)
Expired
Jun 5, 2018, 8:00 PM EDT
In force
30 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), 112 km from the middle of the area, began a volume at 23:30 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 5, 7:38 PM EDTTSTM WND DMG3 Nnw Boynton Beach, FLA REPORT FROM BROADCAST MEDIA...WPTV... REPORTED AND SHARED PHOTOS OF A FENCE THAT WAS KNOCKED OVER AND A GAZEBO THAT WAS BLOWN OVER WITH A THUNDERSTORM THAT MOVED THROUGH THE AREA NEAR THE INTERSECTION OF HYPOLUXO ROAD AND MILITARY TRAIL. TIME IS ESTIMATED VI
Jun 5, 7:38 PM EDTTSTM WND GST 482 Sw Lake Worth, FLA THUNDERSTORM WIND GUST OF 48 MPH /42 KNOTS WAS RECORDED BY THE WEATHERBUG MESONET SITE... JPGLC... LOCATED AT JOHN PRINCE GOLF LEARNING CENTER AT 738 PM EDT.
Jun 5, 7:38 PM EDTTSTM WND GST 552 Se Florida Gardens, FLA TRAINED SPOTTER REPORTED PEA SIZE HAIL WITH ESTIMATED WIND GUST OF 50MPH TO 60MPH AT THE INTERSECTION OF JOG RD. & LANTANA RD.
Jun 5, 7:38 PM EDTHAIL 0.252 Se Florida Gardens, FLA TRAINED SPOTTER REPORTED PEA SIZE HAIL WITH ESTIMATED WIND GUST OF 50MPH TO 60MPH AT THE INTERSECTION OF JOG RD. & LANTANA RD.

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, 11.5 hours before the alert went out and 86 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 2018-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1407 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 2018-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.1939Sfc1 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
1407 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
745 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
-27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

935 
WUUS52 KMFL 052330
SVRMFL
FLC099-060000-
/O.NEW.KMFL.SV.W.0013.180605T2330Z-180606T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Miami FL
730 PM EDT TUE JUN 5 2018

The National Weather Service in Miami has issued a

* Severe Thunderstorm Warning for...
  East central Palm Beach County in southeastern Florida...

* Until 800 PM EDT.

* At 730 PM EDT, a severe thunderstorm was located over Atlantis, or
  near Boynton Beach, moving southeast at 15 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  West Palm Beach, Boca Raton, Boynton Beach, Delray Beach and
  Wellington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Miami. You can also share your report with NWS Miami on
Facebook and Twitter.

&&

LAT...LON 2667 8003 2654 8003 2638 8007 2653 8026
      2668 8018
TIME...MOT...LOC 2330Z 295DEG 11KT 2659 8015 

HAIL...<.75IN
WIND...60MPH
 
$$

BAXTER
2 follow-up statements
239 
WWUS52 KMFL 052341
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
741 PM EDT TUE JUN 5 2018

FLC099-060000-
/O.CON.KMFL.SV.W.0013.000000T0000Z-180606T0000Z/
Palm Beach FL-
741 PM EDT TUE JUN 5 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR EAST CENTRAL PALM BEACH COUNTY...

At 740 PM EDT, a severe thunderstorm was located over Atlantis, or
near Boynton Beach, moving southeast at 15 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Boynton Beach, Delray Beach, Wellington, Lake Worth and Palm Beach. 

A trained spotter reported pea size hail Jog Road and Lantana Road 
along with wind gusts estimated at 50 to 60 mph with these severe 
thunderstorm.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Miami. You can also share your report with NWS Miami on Facebook and
Twitter.

&&

LAT...LON 2654 8003 2653 8003 2643 8006 2654 8023
      2666 8019 2664 8004
TIME...MOT...LOC 2340Z 295DEG 11KT 2658 8012 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

BAXTER
712 
WWUS52 KMFL 052355
SVSMFL

Severe Weather Statement
National Weather Service Miami FL
755 PM EDT TUE JUN 5 2018

FLC099-060005-
/O.EXP.KMFL.SV.W.0013.000000T0000Z-180606T0000Z/
Palm Beach FL-
755 PM EDT TUE JUN 5 2018

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PALM BEACH COUNTY
WILL EXPIRE AT 800 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

LAT...LON 2654 8003 2653 8003 2643 8006 2654 8023
      2666 8019 2664 8004
TIME...MOT...LOC 2355Z 295DEG 11KT 2656 8008 

$$

BAXTER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 8:40 PM EDTSpecial Weather StatementMFLPalm Beach35 min
Jun 4, 9:32 PM EDTSpecial Weather StatementMFLPalm Beach28 min
Jun 4, 9:35 PM EDTSpecial Marine WarningMFL40 min
Jun 5, 1:37 PM EDTSpecial Marine WarningMFL38 min
Jun 5, 6:11 PM EDTSpecial Weather StatementMFLPalm Beach49 min
Jun 5, 6:41 PM EDTSpecial Marine WarningMFL49 min
Jun 5, 7:02 PM EDTSpecial Weather StatementMFLBroward28 min
Jun 5, 7:19 PM EDTSpecial Marine WarningMFL41 min
Jun 5, 7:28 PM EDTSpecial Marine WarningMFL47 min

Nearby

Severe Thunderstorm Warnings in Florida, 2018Every severe thunderstorm warning in 2018

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.