Alert archive / Florida / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 10, NWS Miami, FL

March 12, 20105 counties in Florida

NWS Miami, FL issued this severe thunderstorm warning at Mar 12, 2010, 1:17 PM EST for 5 counties in Florida. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 12, 2010, 1:17 PM EST (18:17 UTC)
Expired
Mar 12, 2010, 2:00 PM EST
In force
43 min
Issued by
NWS Miami, FL
Area
Storm-based polygon

Counties Broward County, FL, Collier County, FL, Hendry County, FL, Miami-Dade County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 77 km from the middle of the area, began a volume at 18:20 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, 6.3 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 2010-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1949 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 2010-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 254 square meters per square second.1939587897117Sfc1 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
1949 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
475 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
254 m²/s²
0-3 km storm-relative helicity
227 m²/s²
Significant tornado parameter
2.8
Supercell composite
9.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Mar 12, 12:54 PM EST, 23 minutes earlier.

Area forecast discussion, Mar 12, 12:54 PM EST, 23 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 12, 9:10 AM EST, 4 hours 7 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>

In the hours before

Special weather statement, Mar 12, 11:29 AM EST, 1 hour 48 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>
Special weather statement, Mar 12, 11:31 AM EST, 1 hour 46 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>
Special weather statement, Mar 12, 11:39 AM EST, 1 hour 38 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>
Special weather statement, Mar 12, 12:15 PM EST, 1 hour 2 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>
Special weather statement, Mar 12, 12:53 PM EST, 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1253 PM EST FRI MAR 12 2010

FLZ063-066-067-069>071-121815-
HENDRY FL-GLADES FL-INLAND PALM BEACH COUNTY FL-
COASTAL COLLIER COUNTY FL-INLAND COLLIER COUNTY FL-
INLAND BROWARD COUNTY FL-
1253 PM EST FRI MAR 12 2010

...STRONG THUNDERSTORMS MOVING ACROSS EASTERN HENDRY AND COLLIER
COUNTIES...

AT 1246 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES NORTHEAST OF
MOORE HAVEN TO HENDRY CORRECTIONAL FACILITY TO EAST OF MARCO
ISLAND...MOVING EAST AT 40 MPH.

THESE STORMS WILL AFFECT...

ROYAL PALM HAMMOCK...
BIG CYPRESS ACCESS AREAS OFF ALLIGATOR ALLEY...
DEVILS GARDEN...
CLEWISTON...
BIG CYPRESS SEMINOLE INDIAN RESERVATION...
MILE MARKER 60 ON ALLIGATOR ALLEY...

AND SURROUNDING COMMUNITIES.

THE PRIMARY IMPACT WILL BE GUSTY WINDS OF 40 TO 50 MPH...WHICH 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 2592 8174 2629 8130 2697 8112 2695 8106
      2689 8111 2685 8108 2682 8095 2676 8092
      2669 8074 2677 8075 2678 8073 2676 8070
      2681 8070 2687 8063 2696 8062 2696 8056
      2629 8074 2590 8121 2591 8173
TIME...MOT...LOC 1749Z 270DEG 36KT 2689 8103 2629 8118
          2596 8158

GR
Local storm report, Mar 12, 12:55 PM EST, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
1255 PM EST FRI MAR 12 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     NON-TSTM WND GST 1 E NAPLES              26.14N 81.78W
03/12/2010  E50 MPH          COLLIER            FL   TRAINED SPOTTER

            STORM SPOTTER REPORTED SHELF/WALL CLOUD WHILE DRIVING
            BETWEEN DOWNTOWN NAPLES AND GOLDEN GATE. HE REPORTED WIND
            GUSTS ESTIMATED BETWEEN 40-50 MPH. AROUND AIRPORT BLVD,
            HE REPORTED VISIBILITIES OF AROUND 1/4 MILE. WATER WAS
            REPORTED TO BE COLLECTING.

1220 PM     NON-TSTM WND GST 3 SE QUAIL CREEK ESTATE 26.27N 81.70W
03/12/2010  E30 MPH          COLLIER            FL   EMERGENCY MNGR

            COLLIER COUNTY EMERGENCY MANAGER REPORTED WINDS GUSTING
            TO AROUND 30 MPH NEAR CORKSCREW SCHOOL.

&&

RAGARCIA

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 11, 8:00 PM ESTSpecial Weather StatementMFLMartin30 min
Mar 11, 8:16 PM ESTSpecial Weather StatementMFLMartin29 min
Mar 11, 8:31 PM ESTSpecial Weather StatementMFLMartin29 min
Mar 11, 8:33 PM ESTSpecial Marine WarningMFL57 min
Mar 11, 8:49 PM ESTSpecial Weather StatementMFLMartin11 min
Mar 11, 9:30 PM ESTSpecial Marine WarningMFL60 min
Mar 11, 9:50 PM ESTSpecial Weather StatementMFLPalm Beach25 min
Mar 11, 10:43 PM ESTSpecial Weather StatementMFLPalm Beach32 min
Mar 11, 11:05 PM ESTAreal Flood AdvisoryMFLPalm Beach115 min
Mar 12, 12:19 AM ESTAreal Flood AdvisoryMFLPalm Beach116 min
Mar 12, 12:42 AM ESTFlash Flood WarningMFLPalm Beach4 hr
Mar 12, 3:22 AM ESTFlood WatchMFLBroward, Collier, Glades, Hendry, Miami-Dade, Monroe and 1 more14 hr
Mar 12, 4:33 AM ESTSmall Craft AdvisoryMFL3 days
Mar 12, 4:33 AM ESTSmall Craft Advisory for WindsMFL6 hr
Mar 12, 4:35 AM ESTAreal Flood WarningMFLPalm Beach3 hr
Mar 12, 7:37 AM ESTAreal Flood WarningMFLPalm Beach3 hr
Mar 12, 9:11 AM ESTSpecial Weather StatementMFLBroward64 min
Mar 12, 9:35 AM ESTSpecial Weather StatementMFLBroward55 min
Mar 12, 10:21 AM ESTSpecial Marine WarningMFL24 min
Mar 12, 10:34 AM ESTSpecial Weather StatementMFLBroward56 min
Mar 12, 10:39 AM ESTSpecial Weather StatementMFLCollier51 min
Mar 12, 11:04 AM ESTSpecial Marine WarningMFL26 min
Mar 12, 11:29 AM ESTSpecial Weather StatementMFLBroward46 min
Mar 12, 11:31 AM ESTSpecial Weather StatementMFLCollier, Glades, Hendry59 min
Mar 12, 11:36 AM ESTSpecial Marine WarningMFL54 min
Mar 12, 11:39 AM ESTSpecial Weather StatementMFLBroward36 min
Mar 12, 12:15 PM ESTSpecial Weather StatementMFLGlades60 min
Mar 12, 12:30 PM ESTSpecial Marine WarningMFL60 min
Mar 12, 12:48 PM ESTSpecial Marine WarningMFL42 min
Mar 12, 12:53 PM ESTSpecial Weather StatementMFLCollier, Hendry22 min
Mar 12, 1:19 PM ESTSpecial Weather StatementMFLPalm Beach26 min
Mar 12, 1:25 PM ESTSpecial Marine WarningMFL65 min
Mar 12, 1:39 PM ESTTornado WarningMFLBroward36 min
Mar 12, 2:00 PM ESTAreal Flood AdvisoryMFLBroward, Miami-Dade, Palm Beach2 hr
Mar 12, 2:02 PM ESTTornado WarningMFLBroward13 min
Mar 12, 2:03 PM ESTSevere Thunderstorm WarningMFLBroward, Miami-Dade, Palm Beach56 min
Mar 12, 2:19 PM ESTSpecial Marine WarningMFL86 min
Mar 12, 3:07 PM ESTSpecial Weather StatementMFLMiami-Dade, Monroe38 min
Mar 12, 3:13 PM ESTSpecial Marine WarningMFL92 min
Mar 12, 3:29 PM ESTSpecial Weather StatementMFLMiami-Dade16 min
Mar 12, 3:41 PM ESTAreal Flood AdvisoryMFLMiami-Dade109 min
Mar 12, 3:53 PM ESTSpecial Weather StatementMFLMiami-Dade52 min
Mar 12, 4:45 PM ESTSpecial Marine WarningMFL2 hr

Nearby

Severe Thunderstorm Warnings in Florida, 2010Every severe thunderstorm warning in 2010

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.