Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 321, NWS Tallahassee, FL

June 17, 2023Coffee County, Dale County, Geneva County, Alabama

NWS Tallahassee, FL issued this severe thunderstorm warning at Jun 17, 2023, 3:37 PM CDT for Coffee County, Dale County, Geneva County, Alabama. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 17, 2023, 3:37 PM CDT (20:37 UTC)
Expired: Jun 17, 2023, 3:56 PM CDT
In force: 19 min
Issued by: NWS Tallahassee, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Coffee County, AL, Dale County, AL, Geneva County, AL

The radar

The Ft Rucker radar (KEOX), 37 km from the middle of the area, began a volume at 20:40 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 17, 12:55 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.6 hours before the alert went out and 176 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: 444 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 781 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 17, 2:30 PM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Jun 17, 2:30 PM CDT, 1 hour 7 minutes before

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In the hours before

Local storm report, Jun 17, 2:11 PM CDT, 1 hour 26 minutes before

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Special weather statement, Jun 17, 2:47 PM CDT, 50 minutes before

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Special weather statement, Jun 17, 3:04 PM CDT, 33 minutes before

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Special weather statement, Jun 17, 3:13 PM CDT, 24 minutes before

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The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 16, 11:34 PM CDT	Special Weather Statement	TAE	Jackson	56 min
Jun 16, 11:48 PM CDT	Special Weather Statement	TAE	Holmes, Washington	27 min
Jun 17, 12:13 AM CDT	Special Weather Statement	TAE	Walton, Washington	47 min
Jun 17, 1:07 AM CDT	Special Marine Warning	TAE		38 min
Jun 17, 1:43 AM CDT	Special Marine Warning	TAE		62 min
Jun 17, 2:44 AM CDT	Special Marine Warning	TAE		61 min
Jun 17, 3:44 AM CDT	Special Marine Warning	TAE		61 min
Jun 17, 4:10 AM CDT	Flood Watch	TAE	Dixie, Gadsden, Holmes, Jackson, Jefferson, Lafayette and 5 more	18 hr
Jun 17, 4:44 AM CDT	Special Marine Warning	TAE		61 min
Jun 17, 7:16 AM CDT	Special Weather Statement	TAE	Dixie	29 min
Jun 17, 7:43 AM CDT	Special Weather Statement	TAE	Dixie	32 min
Jun 17, 2:47 PM CDT	Special Weather Statement	TAE	Calhoun	43 min
Jun 17, 3:01 PM CDT	Special Marine Warning	TAE		59 min
Jun 17, 3:04 PM CDT	Severe Thunderstorm Warning	TAE	Bay, Calhoun, Gadsden, Jackson, Liberty	71 min
Jun 17, 3:13 PM CDT	Special Weather Statement	TAE	Walton	47 min
Jun 17, 3:50 PM CDT	Special Marine Warning	TAE		115 min
Jun 17, 4:04 PM CDT	Special Weather Statement	TAE	Gadsden	26 min
Jun 17, 4:16 PM CDT	Severe Thunderstorm Warning	TAE	Gadsden, Leon	74 min
Jun 17, 4:17 PM CDT	Special Weather Statement	TAE	Walton	28 min
Jun 17, 4:22 PM CDT	Special Marine Warning	TAE		113 min
Jun 17, 4:55 PM CDT	Special Marine Warning	TAE		2 hr
Jun 17, 5:01 PM CDT	Severe Thunderstorm Warning	TAE	Jefferson	59 min
Jun 17, 5:15 PM CDT	Severe Thunderstorm Warning	TAE	Lafayette, Madison, Taylor	90 min
Jun 17, 6:02 PM CDT	Special Marine Warning	TAE		58 min
Jun 17, 6:07 PM CDT	Special Weather Statement	TAE	Gadsden	53 min
Jun 17, 6:08 PM CDT	Special Weather Statement	TAE	Walton	37 min
Jun 17, 6:24 PM CDT	Special Marine Warning	TAE		2 hr
Jun 17, 6:25 PM CDT	Special Marine Warning	TAE		52 min
Jun 17, 6:43 PM CDT	Special Weather Statement	TAE	Lafayette	62 min
Jun 17, 6:46 PM CDT	Special Marine Warning	TAE		89 min
Jun 17, 6:48 PM CDT	Special Weather Statement	TAE	Jefferson, Leon	42 min
Jun 17, 12:22 AM CDT	Special Weather Statement	TAE	Decatur, Grady, Thomas	53 min
Jun 17, 1:12 AM CDT	Special Weather Statement	TAE	Brooks, Lowndes, Thomas	48 min
Jun 17, 1:57 AM CDT	Special Weather Statement	TAE	Lowndes	33 min
Jun 16, 10:16 PM CDT	Severe Thunderstorm Warning	TAE	Coffee, Dale	74 min
Jun 16, 11:00 PM CDT	Severe Thunderstorm Warning	TAE	Geneva, Henry, Houston	60 min
Jun 17, 3:04 PM CDT	Special Weather Statement	TAE	Coffee	56 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2023 Every severe thunderstorm warning in 2023

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.