Alert archive / Georgia / Mesoscale Discussions in 2004

Mesoscale Discussion 1425

June 26, 2004Geneva County, Houston County, Alabama; 11 counties in Florida; 38 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2004, 11:47 AM CDT for Geneva County, Houston County, Alabama; 11 counties in Florida; 38 counties in Georgia. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
Jun 26, 2004, 11:47 AM CDT (16:47 UTC)
Expired
Jun 26, 2004, 12:45 PM CDT
In force
58 min
Issued by
the Storm Prediction Center
All 51 counties

Geneva County, AL, Houston County, AL, Calhoun County, FL, Gadsden County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Washington County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Miller County, GA, Mitchell County, GA, Pierce County, GA, Seminole County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Worth County, GA

The radar

The Tallahassee radar (KTLH), 86 km from the middle of the area, began a volume at 16:51 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 watches that followed

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

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 4.8 hours before the alert went out and 85 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, Tallahassee Rgnl, FL at 12:00Z on 2004-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 794 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, Tallahassee Rgnl, FL at 12:00Z on 2004-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939Sfc1 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
794 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
974 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
78 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
Jun 25, 7:35 PM CDTMesoscale DiscussionSPCBaldwin, Escambia55 min
Jun 26, 12:40 PM CDTSevere Thunderstorm WatchSPCBaker, Columbia, Duval, Gadsden, Hamilton, Jefferson and 5 more6 hr
Jun 26, 2:36 PM CDTMesoscale DiscussionSPCBaker, Columbia, Hamilton, Jefferson, Madison, Nassau and 1 more54 min
Jun 26, 4:57 PM CDTMesoscale DiscussionSPCBaker, Clay, Duval, Nassau, Saint Johns, Union63 min

Nearby

Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in Florida, 2004Mesoscale Discussions in Alabama, 2004Every mesoscale discussion in 2004

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.