Alert archive / Florida / Mesoscale Discussions in 2008

Mesoscale Discussion 898

May 11, 200814 counties in Florida; 8 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at May 11, 2008, 8:15 PM EDT for 14 counties in Florida; 8 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 11, 2008, 8:15 PM EDT (00:15 UTC)
Expired
May 11, 2008, 10:15 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 22 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Madison County, FL, Nassau County, FL, Saint Johns County, FL, Suwannee County, FL, Union County, FL, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Echols County, GA, Glynn County, GA, Lowndes County, GA, Ware County, GA

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 0.3 hours before the alert went out and 76 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, Jacksonville, FL at 00:00Z on 2008-05-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2044 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, Jacksonville, FL at 00:00Z on 2008-05-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 348 square meters per square second.1939587897117Sfc1 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
2044 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
1102 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
348 m²/s²
0-3 km storm-relative helicity
420 m²/s²
Significant tornado parameter
4.5
Supercell composite
19.9

Open this sounding in Storm Lab

The text

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

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Nearby

Mesoscale Discussions in Florida, 2008Mesoscale Discussions in Georgia, 2008Every mesoscale discussion in 2008

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.