Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 694

April 26, 200516 counties in Florida; 14 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2005, 1:19 PM EDT for 16 counties in Florida; 14 counties in Georgia. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Apr 26, 2005, 1:19 PM EDT (17:19 UTC)
Expired
Apr 26, 2005, 3:15 PM EDT
In force
116 min
Issued by
the Storm Prediction Center
All 30 counties

Baker County, FL, Bradford County, FL, Columbia County, FL, Duval County, FL, Gadsden County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Wakulla County, FL, Atkinson County, GA, Brantley County, GA, Brooks County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Cook County, GA, Echols County, GA, Grady County, GA, Lanier County, GA, Lowndes County, GA, Pierce County, GA, Thomas County, GA, Ware County, GA

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 5.3 hours before the alert went out and 308 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, Eglin AFB/Valpar, FL at 12:00Z on 2005-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Eglin AFB/Valpar, FL at 12:00Z on 2005-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
780 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
343 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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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 1:55 PM EDTSevere Thunderstorm WatchSPCAlachua, Baker, Bradford, Brevard, Citrus, Clay and 28 more7 hr
Apr 26, 2:54 PM EDTMesoscale DiscussionSPCBay, Escambia, Holmes, Jackson, Okaloosa, Santa Rosa and 2 more66 min
Apr 26, 4:17 PM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Brevard, Citrus, Clay and 27 more58 min
Apr 26, 5:00 PM EDTSevere Thunderstorm WatchSPCBay, Calhoun, Escambia, Gadsden, Gulf, Holmes and 6 more6 hr
Apr 26, 6:31 PM EDTMesoscale DiscussionSPCBay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 3 more89 min
Apr 26, 6:47 PM EDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Brevard, Citrus, Clay and 28 more58 min
Apr 26, 10:49 AM EDTMesoscale DiscussionSPCBartow, Carroll, Chattahoochee, Chattooga, Cherokee, Clay and 26 more116 min

Nearby

Mesoscale Discussions in Florida, 2005Mesoscale Discussions in Georgia, 2005Every mesoscale discussion in 2005

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.