Alert archive / Georgia / Mesoscale Discussions in 2019

Mesoscale Discussion 397

April 19, 20195 counties in Alabama; 10 counties in Florida; 30 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2019, 5:28 AM CDT for 5 counties in Alabama; 10 counties in Florida; 30 counties in Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Apr 19, 2019, 5:28 AM CDT (10:28 UTC)
Expired
Apr 19, 2019, 7:30 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 45 counties

Barbour County, AL, Dale County, AL, Henry County, AL, Houston County, AL, Russell County, AL, Bay County, FL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Jackson County, FL, Leon County, FL, Liberty County, FL, Wakulla County, FL, Washington County, FL, Baker County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Crawford County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Lamar County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Muscogee County, GA, Pike County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Upson County, GA, Webster County, GA

The radar

The Ft Rucker radar (KEOX), 72 km from the middle of the area, began a volume at 10:34 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 10.5 hours before the alert went out and 151 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 00:00Z on 2019-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 00:00Z on 2019-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.19395878Sfc1 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
2 J/kg
Mixed-layer CIN
-144 J/kg
Mixed-layer LCL
1143 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 18, 7:22 PM CDTSevere Thunderstorm WatchSPCBarbour, Bullock, Calhoun, Chambers, Cherokee, Clay and 15 more7 hr
Apr 18, 8:54 PM CDTMesoscale DiscussionSPCCoffee, Dale, Geneva, Henry, Houston96 min
Apr 18, 9:29 PM CDTMesoscale DiscussionSPCBullock, Chambers, Lee, Pike, Russell91 min
Apr 18, 11:44 PM CDTMesoscale DiscussionSPCButler, Coffee, Conecuh, Covington, Crenshaw, Dale and 4 more2 hr
Apr 19, 12:33 AM CDTTornado WatchSPCBarbour, Bullock, Butler, Chambers, Coffee, Conecuh and 13 more9 hr
Apr 19, 2:42 AM CDTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Coffee, Covington, Crenshaw and 8 more2 hr
Apr 19, 8:09 AM CDTMesoscale DiscussionSPCColumbia, Dixie, Gadsden, Gilchrist, Hamilton, Jefferson and 6 more2 hr
Apr 19, 9:13 AM CDTTornado WatchSPCAlachua, Baker, Bradford, Citrus, Clay, Columbia and 21 more6 hr
Apr 19, 12:20 PM CDTMesoscale DiscussionSPCBrevard, Charlotte, Citrus, Clay, Collier, DeSoto and 25 more85 min
Apr 19, 12:36 PM CDTSevere Thunderstorm WatchSPCBrevard, Charlotte, Collier, DeSoto, Glades, Hardee and 16 more8 hr
Apr 19, 2:40 PM CDTMesoscale DiscussionSPCBrevard, Charlotte, DeSoto, Glades, Hardee, Hendry and 12 more95 min
Apr 19, 6:11 PM CDTMesoscale DiscussionSPCBroward, Martin, Miami-Dade, Monroe, Palm Beach, Saint Lucie94 min
Apr 19, 9:06 AM CDTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Columbia, Elbert, Glascock and 21 more84 min
Apr 19, 9:31 AM CDTTornado WatchSPCElbert, Hart9 hr
Apr 19, 9:44 AM CDTTornado WatchSPCBaldwin, Bryan, Bulloch, Burke, Candler, Chatham and 29 more5 hr
Apr 19, 12:19 PM CDTMesoscale DiscussionSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 22 more86 min

Nearby

Mesoscale Discussions in Georgia, 2019Mesoscale Discussions in Florida, 2019Mesoscale Discussions in Alabama, 2019Every mesoscale discussion in 2019

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.