Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Miami, FL

March 29, 2011Miami-Dade County, Florida

NWS Miami, FL issued this special weather statement at Mar 29, 2011, 3:32 PM EDT for Miami-Dade County, Florida. It was in force for 28 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
Mar 29, 2011, 3:32 PM EDT (19:32 UTC)
Expired
Mar 29, 2011, 4:00 PM EDT
In force
28 min
Issued by
NWS Miami, FL

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 16 km from the middle of the area, began a volume at 19:34 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, 7.5 hours before the alert went out and 38 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 2011-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 950 joules per kilogram.LCLLFCEL10008507005003002001001 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 2011-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 square meters per square second.19395878Sfc1 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
950 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
965 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Mar 29, 2:38 PM EDT, 54 minutes earlier.

Area forecast discussion, Mar 29, 2:38 PM EDT, 54 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Mar 29, 2:09 PM EDT, 1 hour 23 minutes before
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA...UPDATED
NATIONAL WEATHER SERVICE MIAMI FL
209 PM EDT TUE MAR 29 2011

FLZ063-066>075-168-172>174-300915-
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-
209 PM EDT TUE MAR 29 2011

...SCATTERED SHOWERS AND THUNDERSTORMS MAINLY IN THE AFTERNOON...
...SOME THUNDERSTORMS COULD PRODUCE STRONG GUSTY WINDS AND SMALL HAIL...
...SLIGHT RISK OF URBAN TYPE FLOODING...
...STRONG THUNDERSTORMS POSSIBLE THURSDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS: SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS SOUTH
FLORIDA AND ADJACENT WATERS TODAY. THE PRIMARY HAZARD WILL BE
FREQUENT TO EXCESSIVE LIGHTNING STRIKES, ALTHOUGH A FEW STORMS
COULD BECOME STRONG WITH WIND GUSTS TO NEAR 45 TO 55 MPH AND SMALL
HAIL.

WIND: WITH THE OCCURRENCE OF A THUNDERSTORM, GUSTY WINDS TO NEAR
45 TO 55 MPH MAY BE POSSIBLE.

HAIL: UP TO DIME SIZED HAIL IS POSSIBLE WITH THE STRONGEST STORMS.

FLOODING: DUE TO THE WIDESPREAD RAINFALL ACROSS SOUTH FLORIDA ON
MONDAY, ANY ADDITIONAL RAINFALL ACCUMULATION TODAY WILL MORE
EASILY RUNOFF. THEREFORE, THERE IS A SLIGHT RISK OF URBAN TYPE
FLOODING ACROSS SOUTH FLORIDA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS CAN BE EXPECTED THURSDAY AHEAD OF AN
APPROACHING COLD FRONT. A FEW STORMS COULD BE STRONG WITH THE MAIN IMPACT
BEING STRONG GUSTY WINDS, FREQUENT TO EXCESSIVE LIGHTNING, SMALL HAIL
AND HEAVY RAIN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED. 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, Mar 29, 3:10 PM EDT, 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
310 PM EDT TUE MAR 29 2011

FLZ073-074-291945-
METROPOLITAN MIAMI DADE FL-INLAND MIAMI-DADE FL-
310 PM EDT TUE MAR 29 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL MIAMI-DADE COUNTY

* FOR GUSTY WINDS UP TO 55 MPH

* UNTIL 345 PM EDT

AT 308 PM EDT...STRONG THUNDERSTORM 3 MILES WEST OF INTERSECTION
KROME AND KENDALL DRIVE...MOVING SOUTHWEST AT 25 MPH. THIS STORM
WILL AFFECT INLAND RURAL AREAS OF CENTRAL MIAMI-DADE COUNTY.

THE PRIMARY IMPACTS WILL BE GUSTY WINDS OF UP TO 55 MPH. 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.

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

LAT...LON 2590 8050 2575 8031 2558 8052 2570 8066
TIME...MOT...LOC 1909Z 033DEG 20KT 2570 8053

GREGORIA
Special weather statement, Mar 29, 3:32 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
332 PM EDT TUE MAR 29 2011

FLZ073-292000-
INLAND MIAMI-DADE FL-
332 PM EDT TUE MAR 29 2011

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A

* SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL MIAMI-DADE COUNTY

* FOR GUSTY WINDS FROM 45 TO 55 MPH

* UNTIL 400 PM EDT

AT 329 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES SOUTHWEST OF INTERSECTION KROME AND
KENDALL DRIVE...MOVING SOUTH AT 15 MPH.

* THE STORM WILL AFFECT...
  SW 237TH AVE...
  SW 160TH ST...
  REDLAND...
  AND SURROUNDING COMMUNITIES.

THE PRIMARY IMPACTS WILL BE GUSTY WINDS OF 45 TO 55 MPH. 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.

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

LAT...LON 2548 8051 2549 8069 2574 8064 2573 8049
TIME...MOT...LOC 1931Z 009DEG 13KT 2563 8056

GREGORIA

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 28, 8:24 PM EDTSpecial Weather StatementMFLMiami-Dade21 min
Mar 28, 8:55 PM EDTSpecial Marine WarningMFL50 min
Mar 28, 11:41 PM EDTSpecial Marine WarningMFL64 min
Mar 29, 12:41 AM EDTSpecial Marine WarningMFL64 min
Mar 29, 3:10 PM EDTSpecial Weather StatementMFLMiami-Dade35 min
Mar 29, 3:47 PM EDTSpecial Weather StatementMFLMonroe58 min
Mar 29, 3:54 PM EDTSpecial Weather StatementMFLBroward36 min
Mar 29, 4:02 PM EDTSevere Thunderstorm WarningMFLMiami-Dade58 min
Mar 29, 4:11 PM EDTSpecial Weather StatementMFLMiami-Dade34 min
Mar 29, 4:22 PM EDTSevere Thunderstorm WarningMFLMiami-Dade25 min
Mar 29, 4:37 PM EDTSpecial Weather StatementMFLBroward38 min
Mar 29, 4:48 PM EDTSevere Thunderstorm WarningMFLBroward, Palm Beach57 min
Mar 29, 4:51 PM EDTSevere Thunderstorm WarningMFLMiami-Dade20 min
Mar 29, 5:16 PM EDTSpecial Weather StatementMFLBroward59 min
Mar 29, 5:23 PM EDTSpecial Weather StatementMFLPalm Beach22 min
Mar 29, 5:24 PM EDTSpecial Weather StatementMFLPalm Beach36 min
Mar 29, 5:34 PM EDTSevere Thunderstorm WarningMFLPalm Beach27 min
Mar 29, 5:38 PM EDTSevere Thunderstorm WarningMFLPalm Beach37 min
Mar 29, 6:02 PM EDTSpecial Weather StatementMFLPalm Beach58 min
Mar 29, 6:06 PM EDTSpecial Marine WarningMFL54 min
Mar 29, 6:14 PM EDTSevere Thunderstorm WarningMFLPalm Beach31 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.