Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Melbourne, FL

March 10, 2011Okeechobee County, Florida

NWS Melbourne, FL issued this special weather statement at Mar 10, 2011, 9:03 AM EST for Okeechobee County, Florida. It was in force for 42 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 10, 2011, 9:03 AM EST (14:03 UTC)
Expired
Mar 10, 2011, 9:45 AM EST
In force
42 min
Issued by
NWS Melbourne, FL

County Okeechobee County, FL

The radar

The Melbourne radar (KMLB), 85 km from the middle of the area, began a volume at 14:02 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 2.1 hours before the alert went out and 128 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, Cape Canaveral, FL at 12:00Z on 2011-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Cape Canaveral, FL at 12:00Z on 2011-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -120 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1411 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
-120 m²/s²
0-3 km storm-relative helicity
198 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.

<!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 Melbourne, FL wrote its last area forecast discussion before this special weather statement went out at Mar 10, 3:27 AM EST, 5 hours 36 minutes earlier.

Area forecast discussion, Mar 10, 3:27 AM EST, 5 hours 36 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 10, 4:38 AM EST, 4 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MELBOURNE FL
438 AM EST THU MAR 10 2011

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-102100-
COASTAL WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE
OUT 20 NM-
COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN
INLET OUT 20 NM-
COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20 NM-
WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO
60 NM OFFSHORE-
WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET 20 TO
60 NM OFFSHORE-
WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60 NM OFFSHORE-
INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-SOUTHERN BREVARD-
OSCEOLA-INDIAN RIVER-OKEECHOBEE-ST. LUCIE-MARTIN-COASTAL VOLUSIA-
SOUTHERN LAKE-NORTHERN BREVARD-
438 AM EST THU MAR 10 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

...THUNDERSTORM IMPACT...
A BAND OF SHOWERS AND EMBEDDED THUNDERSTORMS AHEAD OF A COLD FRONT
WILL MOVE INTO LAKE AND VOLUSIA COUNTIES EARLY THIS MORNING. THIS
LINE WILL THEN CONTINUE SOUTHEASTWARD TOWARD OKEECHOBEE AND THE
TREASURE COAST LATER THIS AFTERNOON. MAIN THREATS WITH ANY
THUNDERSTORMS WILL BE STRONG GUSTY WINDS UP TO 40 TO 45
MPH...DANGEROUS CLOUD TO GROUND LIGHTNING STRIKES AND HEAVY
RAINFALL.

...RIP CURRENT IMPACT...
OCEAN CONDITIONS WILL BE FAVORABLE FOR AN ELEVATED RISK OF RIP
CURRENTS TODAY. ALWAYS SWIM NEAR A LIFEGUARD AND NEVER SWIM
ALONE.

...MARINE THUNDERSTORM GUST IMPACT...
A LINE OF SHOWERS AND STORMS AHEAD OF A COLD FRONT WILL MOVE FROM
NORTH TO SOUTH OVER THE AREA TODAY. ANY THUNDERSTORMS THAT PUSH
OFFSHORE WILL HAVE THE POTENTIAL TO PRODUCE WIND GUSTS IN EXCESS
OF 34 KNOTS.

...WIND AND SEA IMPACT...
SOUTH WINDS WILL INCREASE ACROSS THE WATERS THIS MORNING AS THEY
VEER TO THE SOUTHWEST AND EVENTUALLY WEST LATE TODAY AS A COLD
FRONT CROSSES THE AREA. WINDS WILL BECOME NORTHWEST TONIGHT AND
INCREASE UP TO 20 TO 25 KNOTS OFFSHORE BEHIND THE COLD
FRONT...BUILDING SEAS UP TO 7 TO 8 FEET.

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FOR THE OFFSHORE WATERS
OF VOLUSIA AND BREVARD COUNTIES TODAY AND WILL THEN BE IN EFFECT
FOR THE ENTIRE COASTAL WATERS TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRESH NORTHWEST WINDS WILL CONTINUE TO GENERATE HAZARDOUS BOATING
CONDITIONS OVER THE COASTAL WATERS INTO LATE WEEK. A MUCH DRIER
AIRMASS WILL BUILD IN BEHIND THE COLD FRONT INTO FRIDAY. THIS
DRIER AIR COUPLED WITH GUSTY NORTHWEST WINDS WILL GENERATE AN
ELEVATED FIRE WEATHER WEATHER THREAT TOMORROW AFTERNOON.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO MONITOR THE WEATHER AND SELF ACTIVATE
IF NEEDED.

WEITLICH

In the hours before

Special weather statement, Mar 10, 9:03 AM EST, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
903 AM EST THU MAR 10 2011

FLZ053-054-058-101445-
INDIAN RIVER-OKEECHOBEE-OSCEOLA-
903 AM EST THU MAR 10 2011

...A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS
BETWEEN 35 AND 45 MPH AND SMALL HAIL OVER WESTERN INDIAN RIVER
COUNTY...OKEECHOBEE COUNTY...SOUTH OSCEOLA COUNTY...

* UNTIL 945 AM EST.

AT 857 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SHOWERS AND ISOLATED STORMS CAPABLE OF PRODUCING STRONG
WINDS AND SMALL HAIL FROM 45 MILES NORTHWEST OF YEEHAW JUNCTION TO
15 MILES NORTHWEST OF KISSIMMEE PRAIRIE PRESERVE. THE LINE WAS
MOVING EAST AT 20 TO 25 MPH.

THE PRIMARY THREAT WILL BE CLOUD TO GROUND LIGHTNING STRIKES AND
GUSTY WINDS OF 35 TO 45 MPH...WHICH CAN CAUSE UNSECURED OBJECTS TO
BLOW AROUND...SNAP TREE LIMBS OR CAUSE POWER OUTAGES. HEAVY RAINFALL
WILL TEMPORARILY REDUCE VISIBILITY. SEEK SHELTER INDOORS UNTIL THE
STORM PASSES.

TORRENTIAL RAINFALL CAN BE EXPECTED...CAUSING TEMPORARY PONDING ON
SOME ROADS AND MINOR FLOODING OF POOR DRAINAGE AREAS. MOTORISTS
SHOULD SLOW DOWN IN HEAVY RAINFALL TO REDUCE THE RISK OF HYDROPLANING
AND LEAVE SAFE DISTANCE BETWEEN OTHER VEHICLES.

LAT...LON 2720 8080 2714 8087 2725 8100 2729 8100
      2733 8105 2736 8104 2738 8106 2739 8112
      2746 8117 2749 8121 2754 8121 2761 8115
      2767 8114 2780 8121 2782 8070 2713 8068
TIME...MOT...LOC 1401Z 270DEG 0KT 2827 8121 2777 8121

SEDLOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 9, 9:11 PM ESTSpecial Weather StatementMLBLake, Volusia64 min
Mar 9, 9:18 PM ESTSpecial Marine WarningMLB117 min
Mar 9, 10:16 PM ESTSpecial Weather StatementMLBLake, Orange, Seminole, Volusia59 min
Mar 9, 11:25 PM ESTSpecial Weather StatementMLBBrevard65 min
Mar 10, 3:29 AM ESTFire Weather WatchMLBLake, Okeechobee, Orange, Osceola, Seminole, Volusia24 hr
Mar 10, 9:42 AM ESTSpecial Weather StatementMLBIndian River, Okeechobee, Saint Lucie48 min
Mar 10, 10:20 AM ESTSpecial Weather StatementMLBIndian River, Martin, Saint Lucie40 min
Mar 10, 10:56 AM ESTSpecial Marine WarningMLB2 hr
Mar 10, 11:03 AM ESTSpecial Weather StatementMLBMartin, Saint Lucie42 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.