Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Melbourne, FL

December 11, 2012Okeechobee County, Florida

NWS Melbourne, FL issued this special weather statement at Dec 11, 2012, 5:12 PM EST for Okeechobee County, Florida. It was in force for 48 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: Dec 11, 2012, 5:12 PM EST (22:12 UTC)
Expired: Dec 11, 2012, 6:00 PM EST
In force: 48 min
Issued by: NWS Melbourne, FL

County Okeechobee County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 10.2 hours before the alert went out and 203 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: 1813 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 10, 10:23 PM EST	Small Craft Advisory	MLB		6 hr
Dec 11, 3:28 PM EST	Special Weather Statement	MLB	Volusia	3 hr
Dec 11, 5:35 PM EST	Severe Thunderstorm Warning	MLB	Okeechobee, Osceola	40 min

Nearby

Special Weather Statements in Florida, 2012 Every special weather statement in 2012

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.