Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Miami, FL

August 7, 2011Palm Beach County, Florida

NWS Miami, FL issued this special weather statement at Aug 7, 2011, 4:12 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
Aug 7, 2011, 4:12 PM EDT (20:12 UTC)
Expired
Aug 7, 2011, 4:45 PM EDT
In force
33 min
Issued by
NWS Miami, FL

County Palm Beach County, FL

The radar

The Miami radar (KAMX), 97 km from the middle of the area, began a volume at 20:11 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, 8.2 hours before the alert went out and 71 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 2011-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3861 joules per kilogram.LCLEL10008507005003002001001 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 2011-08-07The 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
3861 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
596 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
6 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.

132 
WWUS82 KMFL 072012
SPSMFL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
412 PM EDT SUN AUG 7 2011

FLZ067-068-168-072045-
COASTAL PALM BEACH COUNTY FL INLAND PALM BEACH COUNTY FL METRO PALM
BEACH COUNTY FL 
412 PM EDT SUN AUG 7 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHEASTERN PALM BEACH COUNTY 

* UNTIL 445 PM EDT

* AT 407 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED   
  A STRONG THUNDERSTORM NEAR BOCA RATON...AND MOVING NORTHEAST AT 15 
  TO 20 MPH.

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

THE PRIMARY IMPACTS WILL BE FREQUENT TO EXCESSIVE LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH. LIGHTNING IS THE NUMBER ONE WEATHER RELATED
KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. THESE
WINDS CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND
UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE
STORM PASSES.

RESIDENTS NEAR THE PATH OF SHOULD REMAIN ON THE ALERT FOR ADDITIONAL
STATEMENTS AND POSSIBLE WARNINGS.

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

LAT...LON 2648 8006 2635 8006 2633 8014 2633 8018
      2647 8022 2658 8005 2648 8005
TIME...MOT...LOC 2012Z 230DEG 20KT 2641 8011

$$

BAXTER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 1:08 PM EDTSpecial Marine WarningMFL22 min
Aug 7, 2:04 PM EDTSpecial Weather StatementMFLMiami-Dade26 min
Aug 7, 2:05 PM EDTSpecial Marine WarningMFL55 min
Aug 7, 2:09 PM EDTSpecial Weather StatementMFLGlades36 min
Aug 7, 2:43 PM EDTSpecial Weather StatementMFLMiami-Dade32 min
Aug 7, 2:54 PM EDTSpecial Marine WarningMFL66 min
Aug 7, 2:59 PM EDTSpecial Marine WarningMFL61 min
Aug 7, 3:24 PM EDTSpecial Weather StatementMFLBroward51 min
Aug 7, 3:32 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach33 min
Aug 7, 4:02 PM EDTSpecial Marine WarningMFL58 min
Aug 7, 4:38 PM EDTSpecial Weather StatementMFLPalm Beach37 min
Aug 7, 4:40 PM EDTSpecial Marine WarningMFL65 min

Nearby

Special Weather Statements in Florida, 2011Every special weather statement 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.