Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Melbourne, FL

May 30, 2017Brevard County, Florida

NWS Melbourne, FL issued this special weather statement at May 30, 2017, 3:18 PM EDT for Brevard County, Florida. It was in force for 27 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: May 30, 2017, 3:18 PM EDT (19:18 UTC)
Expired: May 30, 2017, 3:45 PM EDT
In force: 27 min
Issued by: NWS Melbourne, FL

County Brevard County, FL

The radar

The Melbourne radar (KMLB), 34 km from the middle of the area, began a volume at 19:21 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.3 hours before the alert went out and 250 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1304 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

As transmitted.

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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 Melbourne, FL wrote its last area forecast discussion before this special weather statement went out at May 30, 9:32 AM EDT, 5 hours 46 minutes earlier.

Area forecast discussion, May 30, 9:32 AM EDT, 5 hours 46 minutes before

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</head>
<body>
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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>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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Hazardous weather outlook, May 30, 5:56 AM EDT, 9 hours 22 minutes before

Hazardous Weather Outlook
National Weather Service Melbourne FL
556 AM EDT Tue May 30 2017

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-302300-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia-
Brevard County Line to Sebastian Inlet 0-20 nm-
Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia-
Brevard County Line 20-60 nm-Volusia-
Brevard County Line to Sebastian Inlet 20-60 nm-
Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia County-
Northern Lake County-Orange-Seminole-Southern Brevard County-
Osceola-Indian River-Okeechobee-St. Lucie-Martin-
Coastal Volusia County-Southern Lake County-
Northern Brevard County-
556 AM EDT Tue May 30 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
Increasing moisture and the inland moving east coast sea breeze
will spark isolated to scattered lightning storms this afternoon
into early this evening. Initial storm development should occur
early this afternoon just inland from the Volusia or Brevard coast
then develop farther inland toward Lake county and south toward
Okeechobee county by late in the day. Storm coverage should be
lowest along the Treasure coast of Martin and Saint Lucie
counties.

Residual dry air in the mid levels may produce a few strong
downburst winds up to 45 mph. Cloud to ground lightning will be
the primary hazard. Seek shelter indoors if thunder is heard.

.MARINE THUNDERSTORM GUST IMPACT...
A few lightning storms over land may push back across the
intracoastal waters and nearshore Atlantic this afternoon and
early evening, mainly north of Sebastian Inlet. Gusty outflow
winds near 35 knots will be possible along with dangerous
lightning strikes.

.FIRE WEATHER IMPACT...
Continued dry vegetation will produce a high to very high danger
of wildfire spread.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
A more typical wet season pattern is expected this week into the
weekend with scattered afternoon and evening lightning storms.
Locally heavy rain, gusty winds and cloud to ground lightning
will accompany storms.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today.

Kelly

In the hours before

Special weather statement, May 30, 3:18 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Melbourne FL
318 PM EDT TUE MAY 30 2017

FLZ147-301945-
Northern Brevard County FL-
318 PM EDT TUE MAY 30 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL BREVARD COUNTY UNTIL
345 PM EDT...

At 317 PM EDT, a strong thunderstorm was reported over Canaveral
Groves, or near Lone Cabbage Fish Camp. This storm was nearly
stationary.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Rockledge, Cocoa, Lone Cabbage Fish Camp, Sharpes and Port Saint
John.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2834 8072 2834 8086 2835 8086 2835 8087
      2847 8089 2847 8087 2850 8077 2833 8071
TIME...MOT...LOC 1917Z 336DEG 2KT 2841 8083

Bragaw

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 6:04 PM EDT	Special Weather Statement	MLB	Volusia	41 min
May 30, 7:25 PM EDT	Special Weather Statement	MLB	Lake	50 min
May 30, 7:41 PM EDT	Severe Thunderstorm Warning	MLB	Lake, Seminole	34 min
May 30, 7:56 PM EDT	Special Weather Statement	MLB	Lake	49 min

Nearby

Special Weather Statements in Florida, 2017 Every special weather statement in 2017

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.