Alert archive / Florida / Special Weather Statements in 2021
Special Weather Statement, NWS Melbourne, FL
NWS Melbourne, FL issued this special weather statement at May 11, 2021, 3:58 PM EDT for Martin County, Florida. It was in force for 47 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 11, 2021, 3:58 PM EDT (19:58 UTC)
- Expired
- May 11, 2021, 4:45 PM EDT
- In force
- 47 min
- Issued by
- NWS Melbourne, FL
County Martin County, FL
The radar
The Melbourne radar (KMLB), 120 km from the middle of the area, began a volume at 19:58 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, 8.0 hours before the alert went out and 138 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.
- Mixed-layer CAPE
- 972 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 857 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</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 May 11, 10:09 AM EDT, 5 hours 49 minutes earlier.
Area forecast discussion, May 11, 10:09 AM EDT, 5 hours 49 minutes before
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</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.
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Please try again in a few minutes.
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</html>Hazardous weather outlook, May 11, 11:14 AM EDT, 4 hours 44 minutes before
Hazardous Weather Outlook National Weather Service Melbourne FL 1114 AM EDT Tue May 11 2021 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-112100- 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- Northern Lake-Orange-Seminole-Southern Brevard-Osceola- Indian River-Okeechobee-St. Lucie-Martin-Coastal Volusia- Southern Lake-Northern Brevard- 1114 AM EDT Tue May 11 2021 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT. .THUNDERSTORM IMPACT... Isolated to scattered thunderstorms are possible this afternoon and through this evening before diminishing by around midnight. Any storms that develop will have the potential of producing gusty winds, heavy rainfall, and frequent lighting strikes. .RIP CURRENT IMPACT... There is a moderate risk of rip currents at all Central Florida Atlantic beaches. Always swim within sight of a life guard and never enter the surf alone. .MARINE THUNDERSTORM GUST IMPACT... Isolated showers and storms will be possible this afternoon which have the potential to produce winds to around 30kts over the nearshore waters through midnight. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. Rain and storm chances will increase through the week with the best chance for thunderstorms expected on Wednesday and into Thursday. The main threats will once again be cloud-to-ground lightning, gusty winds, and heavy rainfall. Large northeast swells will produce a high risk of rip currents and rough surf at area beaches as well as hazardous boating conditions starting Thursday night and continuing through the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed this afternoon and tonight. Rodriguez/Pendergrast
In the hours before
Special weather statement, May 11, 3:58 PM EDT, 0 minutes before
Special Weather Statement National Weather Service Melbourne FL 358 PM EDT Tue May 11 2021 FLZ064-112045- Martin FL- 358 PM EDT Tue May 11 2021 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MARTIN COUNTY UNTIL 445 PM EDT... At 357 PM EDT, Doppler radar was tracking a strong thunderstorm 7 miles southwest of Palm City. This storm was nearly stationary. Winds in excess of 40 mph will be possible with this storm. Locations impacted include... Highways 76 and 726 between Indiantown and Palm City. 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 2699 8043 2717 8046 2717 8028 2699 8024 TIME...MOT...LOC 1957Z 310DEG 3KT 2709 8037 Watson
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 4:23 PM EDT | Special Weather Statement | MLB | Flagler | 52 min |
| May 11, 4:47 PM EDT | Special Weather Statement | MLB | Martin | 28 min |
| May 11, 4:53 PM EDT | Special Weather Statement | MLB | Seminole | 52 min |
| May 11, 4:57 PM EDT | Special Marine Warning | MLB | 63 min | |
| May 11, 5:18 PM EDT | Special Weather Statement | MLB | Seminole | 27 min |
| May 11, 5:44 PM EDT | Special Weather Statement | MLB | Brevard | 46 min |
| May 11, 5:53 PM EDT | Special Marine Warning | MLB | 46 min | |
| May 11, 6:59 PM EDT | Special Weather Statement | MLB | Brevard | 46 min |
Nearby
Special Weather Statements in Florida, 2021Every special weather statement in 2021
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.