Alert archive / Florida / Mesoscale Discussions in 2022

Mesoscale Discussion 680

May 6, 20227 counties in Florida; Charlton County, Clinch County, Echols County, Georgia

The Storm Prediction Center issued this mesoscale discussion at May 6, 2022, 6:15 PM EDT for 7 counties in Florida; Charlton County, Clinch County, Echols County, Georgia. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: May 6, 2022, 6:15 PM EDT (22:15 UTC)
Expired: May 6, 2022, 7:15 PM EDT
In force: 60 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 185

Counties Baker County, FL, Columbia County, FL, Franklin County, FL, Hamilton County, FL, Lafayette County, FL, Suwannee County, FL, Taylor County, FL, Charlton County, GA, Clinch County, GA, Echols County, GA

The radar

The Tallahassee radar (KTLH), 62 km from the middle of the area, began a volume at 22:18 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 12:00Z, 10.3 hours before the alert went out and 60 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 515 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 880 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.6

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.

Issued	Product	Office	Counties	Lasted
May 6, 3:12 AM EDT	Mesoscale Discussion	SPC	Escambia	2 hr
May 6, 6:42 AM EDT	Mesoscale Discussion	SPC	Bay, Calhoun, Holmes, Jackson, Walton, Washington	93 min
May 6, 10:49 AM EDT	Mesoscale Discussion	SPC	Escambia, Holmes, Jackson, Okaloosa, Santa Rosa, Walton and 1 more	56 min
May 6, 11:26 AM EDT	Severe Thunderstorm Watch	SPC	Bay, Calhoun, Escambia, Holmes, Jackson, Okaloosa and 3 more	4 hr
May 6, 11:39 AM EDT	Mesoscale Discussion	SPC	Calhoun, Franklin, Gadsden, Gulf, Jackson, Jefferson and 4 more	2 hr
May 6, 12:57 PM EDT	Tornado Watch	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Hamilton and 12 more	7 hr
May 6, 3:22 PM EDT	Mesoscale Discussion	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Hamilton and 8 more	113 min
May 6, 3:47 PM EDT	Severe Thunderstorm Watch	SPC	Alachua, Baker, Bradford, Columbia, Duval, Gilchrist and 2 more	6 hr
May 6, 1:04 PM EDT	Mesoscale Discussion	SPC	Dawson, Fannin, Gilmer, Habersham, Lumpkin, Murray and 4 more	86 min
May 6, 1:41 PM EDT	Tornado Watch	SPC	Banks, Catoosa, Dawson, Elbert, Fannin, Franklin and 13 more	6 hr
May 6, 4:03 PM EDT	Mesoscale Discussion	SPC	Fannin, Habersham, Hart, Rabun, Stephens, Towns and 2 more	57 min

Nearby

Mesoscale Discussions in Florida, 2022 Mesoscale Discussions in Georgia, 2022 Every mesoscale discussion in 2022

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.