Alert archive / Florida / Special Weather Statements in 2011

Special Weather Statement, NWS Melbourne, FL

August 15, 2011Osceola County, Florida

NWS Melbourne, FL issued this special weather statement at Aug 15, 2011, 5:20 PM EDT for Osceola County, Florida. It was in force for 25 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: Aug 15, 2011, 5:20 PM EDT (21:20 UTC)
Expired: Aug 15, 2011, 5:45 PM EDT
In force: 25 min
Issued by: NWS Melbourne, FL

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 43 km from the middle of the area, began a volume at 21:21 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

Miami, FL (KMIA), launched 12:00Z, 9.3 hours before the alert went out and 234 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: 2203 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 843 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: -4 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.

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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 Aug 15, 3:07 PM EDT, 2 hours 13 minutes earlier.

Area forecast discussion, Aug 15, 3:07 PM EDT, 2 hours 13 minutes before

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Hazardous weather outlook, Aug 15, 11:50 AM EDT, 5 hours 30 minutes before

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In the hours before

Special weather statement, Aug 15, 3:28 PM EDT, 1 hour 52 minutes before

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Special weather statement, Aug 15, 3:36 PM EDT, 1 hour 44 minutes before

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Special weather statement, Aug 15, 4:27 PM EDT, 53 minutes before

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Special weather statement, Aug 15, 5:20 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 3:28 PM EDT	Special Weather Statement	MLB	Martin, Saint Lucie	62 min
Aug 15, 3:36 PM EDT	Special Weather Statement	MLB	Osceola	39 min
Aug 15, 3:55 PM EDT	Special Marine Warning	MLB		110 min
Aug 15, 4:27 PM EDT	Special Weather Statement	MLB	Martin	48 min
Aug 15, 5:25 PM EDT	Special Weather Statement	MLB	Volusia	50 min

Nearby

Special Weather Statements in Florida, 2011 Every 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.