Alert archive / Florida / Special Weather Statements in 2018

Special Weather Statement, NWS Melbourne, FL

June 7, 2018Martin County, Florida

NWS Melbourne, FL issued this special weather statement at Jun 7, 2018, 2:41 PM EDT for Martin County, Florida. It was in force for 49 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
Jun 7, 2018, 2:41 PM EDT (18:41 UTC)
Expired
Jun 7, 2018, 3:30 PM EDT
In force
49 min
Issued by
NWS Melbourne, FL

County Martin County, FL

The radar

The Melbourne radar (KMLB), 137 km from the middle of the area, began a volume at 18:45 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, 6.7 hours before the alert went out and 131 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 2018-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 772 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 2018-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 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
772 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1109 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
35 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 7, 9:59 AM EDT, 4 hours 42 minutes earlier.

Area forecast discussion, Jun 7, 9:59 AM EDT, 4 hours 42 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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Jun 7, 10:00 AM EDT, 4 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Melbourne FL
1000 AM EDT Thu Jun 7 2018

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-080300-
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-
1000 AM EDT Thu Jun 7 2018

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
Sufficient moisture coupled with a weak surface trough developing
over north Florida, and an upper level weather disturbance will
lead to another round of numerous showers and lightning storms
across east central Florida today, mainly during the afternoon and
early evening.

Today's storms will move east at 10 to 15 MPH, and will be capable
of producing wind gusts in excess of 40 MPH, frequent cloud to
ground lightning, and torrential rainfall amounts of 1 to 2 inches
in a 60 to 90 minute period. Move indoors to safety at the first
sign of threatening weather, or if you hear thunder.

.MARINE THUNDERSTORM GUST IMPACT...
Storms will have the potential to produce wind gusts of 35 knots
or greater over inland lakes as well as the intracoastal and near
shore Atlantic waters, especially from around Cape Canaveral
southward. Mariners should be on the lookout for storms
approaching from the west, and they move eastward at 10 to 15
knots. Move to safe harbor in advance of storms.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
Coverage of showers and storms will remain above normal through
Saturday, then decrease next week as the local air mass becomes
slightly drier.

.SPOTTER INFORMATION STATEMENT...
Spotters are requested to monitor the weather and self activate
if needed.

Cristaldi/Johnson

In the hours before

Special weather statement, Jun 7, 2:41 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Melbourne FL
241 PM EDT THU JUN 7 2018

FLZ064-071930-
Martin FL-
241 PM EDT THU JUN 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR  UNTIL 330 PM EDT...

At 241 PM EDT, Doppler radar was tracking a strong thunderstorm over
Jupiter Island, moving north at 5 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Tequesta, Jupiter Island and Jonathan Dickinson State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 2698 8006 2697 8008 2697 8014 2696 8014
      2696 8015 2700 8016 2705 8009
TIME...MOT...LOC 1841Z 198DEG 7KT 2700 8008

Rodriguez

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 9:37 PM EDTAreal Flood AdvisoryMLBLake53 min
Jun 7, 12:13 PM EDTSpecial Marine WarningMLB62 min
Jun 7, 2:37 PM EDTAreal Flood AdvisoryMLBMartin113 min
Jun 7, 2:43 PM EDTSpecial Marine WarningMLB2 hr
Jun 7, 4:24 PM EDTSpecial Marine WarningMLB2 hr
Jun 7, 4:34 PM EDTSpecial Weather StatementMLBIndian River26 min
Jun 7, 4:39 PM EDTSpecial Weather StatementMLBSeminole36 min
Jun 7, 4:48 PM EDTAreal Flood AdvisoryMLBIndian River87 min
Jun 7, 4:54 PM EDTSevere Thunderstorm WarningMLBIndian River34 min
Jun 7, 5:07 PM EDTSpecial Marine WarningMLB113 min
Jun 7, 5:18 PM EDTSpecial Weather StatementMLBIndian River27 min
Jun 7, 5:21 PM EDTSpecial Weather StatementMLBBrevard24 min
Jun 7, 5:27 PM EDTSpecial Weather StatementMLBSeminole48 min
Jun 7, 5:36 PM EDTSpecial Weather StatementMLBLake39 min
Jun 7, 5:36 PM EDTSevere Thunderstorm WarningMLBBrevard39 min
Jun 7, 5:40 PM EDTSevere Thunderstorm WarningMLBIndian River50 min
Jun 7, 5:44 PM EDTSevere Thunderstorm WarningMLBOrange, Seminole46 min
Jun 7, 5:53 PM EDTAreal Flood AdvisoryMLBLake112 min
Jun 7, 6:01 PM EDTSpecial Weather StatementMLBIndian River29 min
Jun 7, 6:07 PM EDTSpecial Weather StatementMLBBrevard38 min
Jun 7, 6:12 PM EDTSpecial Weather StatementMLBSaint Lucie33 min
Jun 7, 6:29 PM EDTSpecial Marine WarningMLB91 min
Jun 7, 6:53 PM EDTSpecial Weather StatementMLBOrange37 min
Jun 7, 7:24 PM EDTSpecial Weather StatementMLBBrevard36 min
Jun 7, 7:35 PM EDTSevere Thunderstorm WarningMLBBrevard40 min
Jun 7, 7:59 PM EDTSpecial Marine WarningMLB91 min

Nearby

Special Weather Statements in Florida, 2018Every special weather statement in 2018

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.