Alert archive / Florida / Mesoscale Discussions in 2005

Mesoscale Discussion 343

March 22, 200521 counties in Florida; 19 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Mar 22, 2005, 2:37 PM EST for 21 counties in Florida; 19 counties in Georgia. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Mar 22, 2005, 2:37 PM EST (19:37 UTC)
Expired
Mar 22, 2005, 4:00 PM EST
In force
83 min
Issued by
the Storm Prediction Center
All 40 counties

Alachua County, FL, Baker County, FL, Bradford County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Lafayette County, FL, Levy County, FL, Madison County, FL, Marion County, FL, Nassau County, FL, Putnam County, FL, Saint Johns County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Volusia County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Berrien County, GA, Brantley County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Glynn County, GA, Jeff Davis County, GA, Lanier County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA

The radar

The Jacksonville radar (KJAX), 25 km from the middle of the area, began a volume at 19:39 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

Jacksonville, FL (KJAX), launched 12:00Z, 7.6 hours before the alert went out and 27 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 12:00Z on 2005-03-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 381 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 12:00Z on 2005-03-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.1939587897Sfc1 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
381 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
243 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

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
Mar 22, 7:55 AM ESTTornado WatchSPCEscambia, Okaloosa, Santa Rosa6 hr
Mar 22, 8:38 AM ESTMesoscale DiscussionSPCBay, Calhoun, Gadsden, Holmes, Jackson, Jefferson and 7 more67 min
Mar 22, 8:40 AM ESTTornado WatchSPCBay, Calhoun, Dixie, Gadsden, Gulf, Holmes and 10 more6 hr
Mar 22, 10:38 AM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 6 more2 hr
Mar 22, 10:44 AM ESTMesoscale DiscussionSPCEscambia, Okaloosa, Santa Rosa61 min
Mar 22, 11:05 AM ESTTornado WatchSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 9 more7 hr
Mar 22, 1:51 PM ESTMesoscale DiscussionSPCBay, Calhoun, Dixie, Gadsden, Gulf, Holmes and 11 more54 min
Mar 22, 2:20 PM ESTTornado WatchSPCCalhoun, Gadsden, Gulf, Jackson, Jefferson, Lafayette and 5 more7 hr
Mar 22, 4:41 PM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 9 more34 min
Mar 22, 5:00 PM ESTTornado WatchSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 8 more6 hr
Mar 22, 6:10 PM ESTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 6 more95 min
Mar 22, 9:49 AM ESTMesoscale DiscussionSPCCarroll, Chattahoochee, Haralson, Harris, Heard, Muscogee and 2 more26 min
Mar 22, 10:15 AM ESTSevere Thunderstorm WatchSPCBibb, Butts, Carroll, Chattahoochee, Clayton, Coweta and 29 more6 hr
Mar 22, 11:54 AM ESTMesoscale DiscussionSPCAppling, Baldwin, Bleckley, Bryan, Bulloch, Burke and 34 more36 min
Mar 22, 1:20 PM ESTSevere Thunderstorm WatchSPCAppling, Baldwin, Bleckley, Bryan, Bulloch, Burke and 36 more7 hr
Mar 22, 3:05 PM ESTMesoscale DiscussionSPCBibb, Butts, Carroll, Chattahoochee, Clayton, Coweta and 32 more25 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; radar from the NEXRAD Level II archive.