Alert archive / Georgia / Mesoscale Discussions in 2019

Mesoscale Discussion 342

April 14, 20199 counties in Florida; 15 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Apr 14, 2019, 2:07 PM EDT for 9 counties in Florida; 15 counties in Georgia. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Apr 14, 2019, 2:07 PM EDT (18:07 UTC)
Expired
Apr 14, 2019, 3:30 PM EDT
In force
83 min
Issued by
the Storm Prediction Center
All 24 counties

Baker County, FL, Columbia County, FL, Dixie County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Madison County, FL, Suwannee County, FL, Taylor County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Jeff Davis County, GA, Lanier County, GA, Long County, GA, Lowndes County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA

The radar

The Moody AFB radar (KVAX), 75 km from the middle of the area, began a volume at 18:08 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, 6.1 hours before the alert went out and 101 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 2019-04-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 403 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 2019-04-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 272 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
403 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
697 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
272 m²/s²
0-3 km storm-relative helicity
312 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.7

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 14, 3:15 AM EDTMesoscale DiscussionSPCEscambia, Okaloosa, Santa Rosa60 min
Apr 14, 3:45 AM EDTTornado WatchSPCBay, Calhoun, Escambia, Franklin, Gulf, Holmes and 6 more7 hr
Apr 14, 8:28 AM EDTMesoscale DiscussionSPCCalhoun, Gadsden, Gulf, Jackson, Jefferson, Leon and 4 more3 hr
Apr 14, 10:40 AM EDTTornado WatchSPCBay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 7 more6 hr
Apr 14, 11:07 AM EDTMesoscale DiscussionSPCBay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 4 more83 min
Apr 14, 1:39 AM EDTMesoscale DiscussionSPCChattooga, Dade, Floyd, Walker66 min
Apr 14, 5:20 AM EDTMesoscale DiscussionSPCBartow, Carroll, Catoosa, Chattooga, Coweta, Dade and 11 more115 min
Apr 14, 6:36 AM EDTMesoscale DiscussionSPCBartow, Carroll, Catoosa, Chattooga, Coweta, Dade and 11 more54 min
Apr 14, 7:28 AM EDTTornado WatchSPCBanks, Barrow, Bartow, Bibb, Bleckley, Butts and 69 more7 hr
Apr 14, 11:48 AM EDTMesoscale DiscussionSPCColumbia, Elbert, Franklin, Hart, Lincoln, McDuffie and 5 more117 min
Apr 14, 12:54 PM EDTTornado WatchSPCBaldwin, Burke, Columbia, Dodge, Elbert, Emanuel and 26 more6 hr
Apr 14, 3:00 PM EDTMesoscale DiscussionSPCCatoosa, Fannin, Gilmer, Gordon, Murray, Walker and 1 more2 hr
Apr 14, 3:02 PM EDTTornado WatchSPCAppling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 17 more4 hr
Apr 14, 4:04 PM EDTMesoscale DiscussionSPCBarrow, Bartow, Carroll, Cherokee, Clayton, Cobb and 20 more116 min
Apr 14, 4:28 PM EDTSevere Thunderstorm WatchSPCBanks, Barrow, Bartow, Carroll, Cherokee, Clayton and 28 more6 hr
Apr 14, 5:43 PM EDTMesoscale DiscussionSPCEffingham2 hr
Apr 14, 7:12 PM EDTMesoscale DiscussionSPCBanks, Barrow, Clarke, Elbert, Franklin, Habersham and 11 more2 hr

Nearby

Mesoscale Discussions in Georgia, 2019Mesoscale Discussions in Florida, 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.