Alert archive / Georgia / Mesoscale Discussions in 2017

Mesoscale Discussion 104

January 22, 2017Henry County, Houston County, Alabama; 7 counties in Florida; 53 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jan 22, 2017, 1:55 AM CST for Henry County, Houston County, Alabama; 7 counties in Florida; 53 counties in Georgia. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Jan 22, 2017, 1:55 AM CST (07:55 UTC)
Expired
Jan 22, 2017, 3:00 AM CST
In force
65 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 62 counties

Henry County, AL, Houston County, AL, Calhoun County, FL, Gadsden County, FL, Hamilton County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Madison 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, Bryan County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Evans County, GA, Glynn County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Pierce County, GA, Quitman County, GA, Randolph County, GA, Seminole County, GA, Sumter County, GA, Tattnall County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Turner County, GA, Ware County, GA, Wayne County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA

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 00:00Z, 7.9 hours before the alert went out and 148 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 2017-01-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 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 2017-01-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.1939587897117Sfc1 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
4 J/kg
Mixed-layer CIN
-175 J/kg
Mixed-layer LCL
1065 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
92 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
Jan 21, 6:05 PM CSTMesoscale DiscussionSPCMobile85 min
Jan 21, 6:51 PM CSTTornado Watch PDSSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 36 more8 hr
Jan 21, 8:30 PM CSTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bibb, Bullock, Butler and 34 more90 min
Jan 21, 9:57 PM CSTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Bullock, Butler, Chilton and 29 more93 min
Jan 21, 11:49 PM CSTMesoscale DiscussionSPCAutauga, Barbour, Bibb, Bullock, Butler, Chilton and 30 more116 min
Jan 22, 2:20 AM CSTTornado WatchSPCHenry, Houston9 hr
Jan 22, 2:46 AM CSTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Clay, Coosa, Crenshaw and 9 more119 min
Jan 22, 5:34 AM CSTMesoscale DiscussionSPCHouston86 min
Jan 22, 7:43 AM CSTMesoscale DiscussionSPCBaldwin, Barbour, Butler, Clarke, Coffee, Conecuh and 9 more2 hr
Jan 22, 8:06 AM CSTTornado WatchSPCBaldwin, Butler, Coffee, Conecuh, Covington, Crenshaw and 8 more5 hr
Jan 22, 9:16 AM CSTMesoscale DiscussionSPCEscambia59 min
Jan 22, 11:02 AM CSTMesoscale DiscussionSPCGeneva, Houston58 min
Jan 22, 11:47 AM CSTTornado Watch PDSSPCAutauga, Barbour, Bullock, Chambers, Chilton, Coffee and 13 more7 hr
Jan 22, 12:31 PM CSTMesoscale DiscussionSPCBullock, Chambers, Elmore, Lee, Macon, Montgomery and 2 more59 min
Jan 22, 2:28 PM CSTMesoscale DiscussionSPCChambers, Clay, Lee, Randolph92 min
Jan 22, 6:11 AM CSTMesoscale DiscussionSPCBaker, Calhoun, Gadsden, Hamilton, Jackson, Jefferson and 4 more2 hr
Jan 22, 8:11 AM CSTMesoscale DiscussionSPCBaker, Columbia, Duval, Gadsden, Hamilton, Jefferson and 4 more64 min
Jan 22, 10:25 AM CSTMesoscale DiscussionSPCAlachua, Baker, Bay, Bradford, Calhoun, Clay and 20 more95 min
Jan 22, 12:36 PM CSTMesoscale DiscussionSPCBay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 5 more54 min
Jan 22, 12:56 PM CSTMesoscale DiscussionSPCAlachua, Baker, Bradford, Clay, Columbia, Duval and 7 more94 min
Jan 22, 2:02 PM CSTMesoscale DiscussionSPCGadsden, Jefferson, Lafayette, Leon, Madison, Taylor and 1 more58 min
Jan 22, 3:12 PM CSTMesoscale DiscussionSPCDeSoto, Hardee, Highlands, Hillsborough, Lake, Manatee and 6 more63 min
Jan 22, 3:19 PM CSTMesoscale DiscussionSPCAlachua, Baker, Columbia, Dixie, Gilchrist, Hamilton and 5 more86 min
Jan 22, 3:35 PM CSTTornado Watch PDSSPCBrevard, Citrus, DeSoto, Hardee, Hernando, Highlands and 12 more5 hr
Jan 21, 11:06 PM CSTMesoscale DiscussionSPCAppling, Bacon, Ben Hill, Bibb, Bleckley, Brantley and 34 more54 min
Jan 22, 9:41 AM CSTMesoscale DiscussionSPCBaldwin, Bibb, Bleckley, Butts, Crawford, Dodge and 27 more94 min
Jan 22, 3:02 PM CSTMesoscale DiscussionSPCBryan, Bulloch, Burke, Candler, Chatham, Effingham and 8 more88 min
Jan 22, 3:25 PM CSTTornado Watch PDSSPCBryan, Bulloch, Burke, Candler, Chatham, Columbia and 10 more3 hr
Jan 22, 5:58 PM CSTMesoscale DiscussionSPCBrantley, Bryan, Bulloch, Burke, Candler, Chatham and 11 more92 min

Nearby

Mesoscale Discussions in Georgia, 2017Mesoscale Discussions in Florida, 2017Mesoscale Discussions in Alabama, 2017Every mesoscale discussion in 2017

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.