Alert archive / Florida / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 35, NWS Miami, FL

June 14, 2011Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 14, 2011, 7:52 PM EDT for Palm Beach County, Florida. It was in force for 23 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 14, 2011, 7:52 PM EDT (23:52 UTC)
Expired
Jun 14, 2011, 8:15 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), 111 km from the middle of the area, began a volume at 23:52 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, 11.9 hours before the alert went out and 85 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 2011-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1622 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 2011-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1622 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
67 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.

647 
WUUS52 KMFL 142352
SVRMFL
FLC099-150015-
/O.NEW.KMFL.SV.W.0035.110614T2352Z-110615T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
752 PM EDT TUE JUN 14 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

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

* UNTIL 815 PM EDT

* AT 751 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE   
  HAIL...AND DAMAGING WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS     
  LOCATED 3 MILES NORTHWEST OF BOYNTON BEACH...AND MOVING SOUTH AT   
  15 MPH.

* THE STORM WILL AFFECT...
  BOYNTON BEACH...
  VILLAGE OF GOLF...
  DELRAY BEACH...
  AND SURROUNDING COMMUNITIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. IF
OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES AND
AVOID WATER. MOVE INDOORS OR INSIDE A VEHICLE IF POSSIBLE. AVOID
USING THE TELEPHONE UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG
UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

&&

LAT...LON 2647 8005 2644 8005 2643 8006 2657 8025
      2672 8014 2666 8003 2661 8003 2660 8004
      2660 8003 2658 8003
TIME...MOT...LOC 2352Z 343DEG 14KT 2657 8012

$$

AK
2 follow-up statements
713 
WWUS52 KMFL 150002
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
802 PM EDT TUE JUN 14 2011

FLC099-150015-
/O.CON.KMFL.SV.W.0035.000000T0000Z-110615T0015Z/
PALM BEACH FL-
802 PM EDT TUE JUN 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR EAST CENTRAL PALM BEACH COUNTY...

AT 801 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR VILLAGE OF 
GOLF...MOVING SOUTHEAST AT 10 MPH. FUNNEL CLOUDS HAVE ALSO BEEN 
REPORTED WITH THIS STORM. 

LAT...LON 2647 8005 2644 8005 2643 8006 2654 8020
      2662 8009 2662 8006 2661 8003 2660 8004
      2660 8003 2658 8003
TIME...MOT...LOC 0002Z 317DEG 10KT 2651 8012

$$

AK
352 
WWUS52 KMFL 150011
SVSMFL

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
811 PM EDT TUE JUN 14 2011

FLC099-150020-
/O.EXP.KMFL.SV.W.0035.000000T0000Z-110615T0015Z/
PALM BEACH FL-
811 PM EDT TUE JUN 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PALM BEACH COUNTY
WILL EXPIRE AT 815 PM EDT...

THE STORM HAS WEAKENED AND THEREFORE THE WARNING WILL BE ALLOWED TO 
EXPIRE. 

LAT...LON 2647 8005 2644 8005 2643 8006 2654 8020
      2662 8009 2662 8006 2661 8003 2660 8004
      2660 8003 2658 8003
TIME...MOT...LOC 0010Z 317DEG 10KT 2649 8010

$$

AK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 3:43 PM EDTSpecial Marine WarningMFL62 min
Jun 14, 4:38 PM EDTSpecial Marine WarningMFL52 min
Jun 14, 5:05 PM EDTSpecial Marine WarningMFL40 min
Jun 14, 5:20 PM EDTSpecial Weather StatementMFLMiami-Dade25 min
Jun 14, 5:29 PM EDTSpecial Weather StatementMFLMiami-Dade31 min
Jun 14, 5:43 PM EDTAreal Flood AdvisoryMFLMiami-Dade2 hr
Jun 14, 5:45 PM EDTSpecial Marine WarningMFL50 min
Jun 14, 5:50 PM EDTSpecial Weather StatementMFLMiami-Dade40 min
Jun 14, 6:08 PM EDTSpecial Marine WarningMFL2 hr
Jun 14, 7:02 PM EDTSpecial Marine WarningMFL18 min
Jun 14, 7:08 PM EDTSpecial Marine WarningMFL67 min
Jun 14, 7:27 PM EDTSpecial Weather StatementMFLPalm Beach48 min
Jun 14, 7:32 PM EDTSpecial Weather StatementMFLPalm Beach28 min
Jun 14, 7:38 PM EDTSpecial Weather StatementMFLPalm Beach22 min
Jun 14, 7:50 PM EDTSpecial Marine WarningMFL40 min

Nearby

Severe Thunderstorm Warnings in Florida, 2011Every severe thunderstorm warning in 2011

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.