Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Miami, FL

August 23, 2011Monroe County, Florida

NWS Miami, FL issued this special weather statement at Aug 23, 2011, 2:45 PM EDT for Monroe County, Florida. It was in force for 30 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 23, 2011, 2:45 PM EDT (18:45 UTC)
Expired
Aug 23, 2011, 3:15 PM EDT
In force
30 min
Issued by
NWS Miami, FL

County Monroe County, FL

The radar

The Miami radar (KAMX), 57 km from the middle of the area, began a volume at 18:49 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, 6.8 hours before the alert went out and 66 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 2011-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3354 joules per kilogram.LCLEL10008507005003002001001 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 2011-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
3354 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
514 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
-5 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this special weather statement went out at Aug 23, 1:47 PM EDT, 58 minutes earlier.

Area forecast discussion, Aug 23, 1:47 PM EDT, 58 minutes before
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Aug 23, 5:13 AM EDT, 9 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA
NATIONAL WEATHER SERVICE MIAMI FL
513 AM EDT TUE AUG 23 2011

FLZ063-066>075-168-172>174-240015-
GLADES-HENDRY-INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER-
INLAND COLLIER-INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-
METRO MIAMI DADE-MAINLAND MONROE-COASTAL PALM BEACH-
COASTAL BROWARD-COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
513 AM EDT TUE AUG 23 2011

...RESIDENTS AND VISITORS OF SOUTH FLORIDA SHOULD CONTINUE TO MONITOR HURRICANE IRENE...
...HEAT INDEX READINGS 105 AND 107 WESTERN INTERIOR AREAS TODAY...
...ISOLATED TO SCATTERED STORMS TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

RIP CURRENTS: EASTERLY WINDS AROUND 10 MPH TODAY ALONG THE
ATLANTIC BEACHES OF MIAMI-DADE, BROWARD, AND PALM BEACH COUNTIES
WILL LEAD TO A SLIGHT RISK OF RIP CURRENTS.

THUNDERSTORMS: ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE
TODAY MAINLY OVER THE INTERIOR AND WEST COAST METRO AREAS OF SOUTH
FLORIDA. THE PRIMARY IMPACTS FROM THE STORMS WILL BE LIGHTNING
STRIKES, GUSTY WINDS, AND LOCALLY HEAVY RAINFALL.

WIND: THE STRONGEST STORMS TODAY OVER THE INTERIOR AND WEST COAST
METRO AREAS OF SOUTH FLORIDA WILL BE CAPABLE OF PRODUCING WIND
GUSTS UP 40 TO 50 MPH.

TEMPERATURES: HIGHS TODAY WILL RANGE FROM THE LOWER 90S ALONG THE
EAST COAST METRO AREAS TO THE MID 90S OVER THE INTERIOR AND WEST
COAST METRO AREAS. THIS, COMBINED ABUNDANT LOW LEVEL MOISTURE,
WILL RESULT IN HEAT INDEX READINGS AROUND 100 DEGREES FOR THE EAST COAST
METRO AREAS AND 105 TO 107 OVER THE INTERIOR AND WEST COAST METRO
AREAS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HURRICANE IRENE IS FORECAST BY THE NATIONAL HURRICANE CENTER TO
MOVE WEST NORTHWEST ACROSS THE TURKS AND CAICOS TODAY, THE
SOUTHEASTERN BAHAMAS BY TONIGHT...AND BE NEAR THE CENTRAL BAHAMAS
EARLY WEDNESDAY. IRENE IS A CATEGORY TWO HURRICANE. ADDITIONAL
STRENGTHENING IS FORECAST AND IRENE COULD BECOME A MAJOR HURRICANE LATER
TODAY OR ON WEDNESDAY. THERE IS STILL UNCERTAINTY WITH REGARDS
TO THE EXACT TRACK AND INTENSITY OF THIS SYSTEM AND, ALTHOUGH THE
THREAT TO SOUTH FLORIDA HAS DIMINISHED, RESIDENTS AND VISITORS IN
SOUTH FLORIDA ARE ADVISED TO STAY TUNED TO THE LATEST FORECAST
UPDATES AS IRENE CONTINUES TO MOVE ACROSS THE BAHAMAS. NOW IS A GOOD
TIME TO PREPARE IF YOU HAVE NOT ALREADY PREPARED FOR THIS HURRICANE
SEASON. REFER TO READYSOUTHFLORIDA.ORG AND READY.GOV FOR A
COMPREHENSIVE LIST OF HURRICANE PREPAREDNESS INFORMATION.

.SPOTTER INFORMATION STATEMENT...

WIDESPREAD SPOTTER ACTIVATION IS NOT ANTICIPATED, HOWEVER
INDIVIDUAL SPOTTERS ARE ENCOURAGED TO REPORT HIGH WIND, HAIL AND
FLOODING TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
MIAMI.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

In the hours before

Special weather statement, Aug 23, 2:45 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
245 PM EDT TUE AUG 23 2011

FLZ070-073-075-231915-
INLAND COLLIER COUNTY FL INLAND MIAMI-DADE COUNTY FL MAINLAND MONROE
FL
245 PM EDT TUE AUG 23 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  NORTHWESTERN MIAMI-DADE COUNTY
  SOUTHEASTERN COLLIER COUNTY
  NORTHEASTERN MAINLAND MONROE COUNTY

* UNTIL 315 PM EDT

* AT 242 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  STRONG THUNDERSTORM 4 MILES SOUTHEAST OF DADE-COLLIER TRAINING
  AIRPORT...AND MOVING SOUTHWEST AT 10 MPH.

* THE STORM WILL AFFECT...
  FORTYMILE BEND...
  AND SURROUNDING COMMUNITIES.

LAT...LON 2562 8101 2593 8118 2597 8082 2580 8074
TIME...MOT...LOC 1845Z 045DEG 8KT 2581 8087

85-GIBBS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 3:38 PM EDTSpecial Weather StatementMFLMartin37 min
Aug 23, 4:16 PM EDTSpecial Weather StatementMFLCollier29 min
Aug 23, 4:33 PM EDTSpecial Weather StatementMFLPalm Beach27 min
Aug 23, 4:36 PM EDTSpecial Weather StatementMFLCollier24 min
Aug 23, 4:40 PM EDTSpecial Weather StatementMFLGlades35 min
Aug 23, 4:59 PM EDTAreal Flood AdvisoryMFLGlades6 min
Aug 23, 5:01 PM EDTAreal Flood AdvisoryMFLCollier119 min
Aug 23, 5:13 PM EDTTropical Storm WatchMFL49 hr
Aug 23, 5:38 PM EDTSpecial Weather StatementMFLGlades37 min
Aug 23, 5:59 PM EDTHurricane Local StatementMFLBroward, Miami-Dade, Palm Beach48 hr
Aug 23, 6:07 PM EDTSpecial Weather StatementMFLPalm Beach38 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.