Alert archive / Georgia / Mesoscale Discussions in 2008

Mesoscale Discussion 885

May 11, 20084 states

The Storm Prediction Center issued this mesoscale discussion at May 11, 2008, 7:51 AM CDT for 4 states. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
May 11, 2008, 7:51 AM CDT (12:51 UTC)
Expired
May 11, 2008, 9:15 AM CDT
In force
84 min
Issued by
the Storm Prediction Center
All 121 counties

Barbour County, AL, Chambers County, AL, Dale County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Russell County, AL, Baker County, FL, Duval County, FL, Gadsden County, FL, Hamilton County, FL, Jackson County, FL, Leon County, FL, Madison County, FL, Nassau County, FL, Washington County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Calhoun County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Chattahoochee County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Harris County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, Macon County, GA, Marion County, GA, McIntosh County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Montgomery County, GA, Muscogee County, GA, Peach County, GA, Pierce County, GA, Pike County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Screven County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Tattnall County, GA, Taylor County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Troup County, GA, Turner County, GA, Twiggs County, GA, Upson County, GA, Ware County, GA, Washington County, GA, Wayne County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Wilkinson County, GA, Worth County, GA, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Colleton County, SC, Dorchester County, SC, Hampton County, SC, Jasper County, SC, Orangeburg County, SC

The radar

The Robins AFB radar (KJGX), 95 km from the middle of the area, began a volume at 12:54 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.9 hours before the alert went out and 218 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, Peachtre/Fal Fld, GA at 12:00Z on 2008-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 43 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, Peachtre/Fal Fld, GA at 12:00Z on 2008-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
43 J/kg
Mixed-layer CIN
-161 J/kg
Mixed-layer LCL
759 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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
May 10, 7:08 PM CDTTornado WatchSPCBlount, Calhoun, Cherokee, Clay, Cleburne, Colbert and 23 more7 hr
May 10, 9:21 PM CDTMesoscale DiscussionSPCBlount, Colbert, Cullman, Etowah, Fayette, Franklin and 12 more84 min
May 10, 11:32 PM CDTMesoscale DiscussionSPCBlount, Calhoun, Cherokee, Cleburne, Colbert, Cullman and 15 more118 min
May 11, 1:06 AM CDTMesoscale DiscussionSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 32 more84 min
May 11, 1:37 AM CDTTornado WatchSPCAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more7 hr
May 11, 3:40 AM CDTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Bullock, Chambers, Chilton and 14 more95 min
May 11, 4:52 AM CDTTornado WatchSPCCoffee, Dale, Geneva, Henry, Houston8 hr
May 11, 6:24 AM CDTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Clay, Coosa, Dale and 9 more96 min
May 11, 4:38 AM CDTMesoscale DiscussionSPCBaker, Bradford, Clay, Columbia, Duval, Gadsden and 12 more67 min
May 11, 11:15 AM CDTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 14 more60 min
May 11, 1:24 PM CDTMesoscale DiscussionSPCBaker, Bradford, Calhoun, Clay, Columbia, Duval and 13 more66 min
May 11, 1:42 PM CDTTornado WatchSPCBaker, Columbia, Hamilton, Jefferson, Madison, Nassau and 1 more5 hr
May 11, 3:43 PM CDTMesoscale DiscussionSPCHamilton, Jefferson, Madison, Nassau2 hr
May 10, 7:14 PM CDTMesoscale DiscussionSPCAppling, Baldwin, Bibb, Bleckley, Bryan, Bulloch and 77 more2 hr
May 10, 8:54 PM CDTMesoscale DiscussionSPCAppling, Bacon, Baldwin, Ben Hill, Bibb, Bleckley and 88 more96 min
May 10, 9:06 PM CDTTornado WatchSPCAppling, Bacon, Baldwin, Banks, Barrow, Bartow and 112 more7 hr
May 11, 5:13 AM CDTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Baker, Baldwin, Ben Hill and 62 more92 min
May 11, 6:06 PM CDTMesoscale DiscussionSPCBryan, Chatham, Effingham, Liberty, Long, McIntosh84 min
May 11, 12:39 PM CDTMesoscale DiscussionSPCCalhoun, Chester, Chesterfield, Darlington, Dillon, Fairfield and 9 more2 hr
May 11, 1:07 PM CDTTornado WatchSPCChester, Chesterfield, Darlington, Dillon, Fairfield, Florence and 5 more6 hr
May 11, 3:43 PM CDTTornado WatchSPCHorry6 hr
May 11, 6:30 PM CDTMesoscale DiscussionSPCHorry90 min

Nearby

Mesoscale Discussions in Georgia, 2008Mesoscale Discussions in South Carolina, 2008Mesoscale Discussions in Florida, 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; radar from the NEXRAD Level II archive.