Alert archive / Florida / Mesoscale Discussions in 2008

Mesoscale Discussion 752

April 28, 2008Baker County, Duval County, Nassau County, Florida

The Storm Prediction Center issued this mesoscale discussion at Apr 28, 2008, 3:44 PM EDT for Baker County, Duval County, Nassau County, Florida. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Apr 28, 2008, 3:44 PM EDT (19:44 UTC)
Expired: Apr 28, 2008, 4:45 PM EDT
In force: 61 min
Issued by: the Storm Prediction Center

Counties Baker County, FL, Duval County, FL, Nassau County, FL

The radar

The Jacksonville radar (KJAX), 27 km from the middle of the area, began a volume at 19:45 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.7 hours before the alert went out and 29 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: 5 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1137 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 118 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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Nearby

Mesoscale Discussions in Florida, 2008 Every 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; radar from the NEXRAD Level II archive.