Alert archive / Tennessee / Flash Flood Warnings in 2026

Flash Flood Warning 68, NWS Morristown, TN

August 13, 2026Cocke County, Tennessee

NWS Morristown, TN issued this flash flood warning at Aug 13, 2026, 6:16 PM EDT for Cocke County, Tennessee. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 13, 2026, 6:16 PM EDT (22:16 UTC)
Expired: Aug 13, 2026, 9:00 PM EDT
In force: 3 hr
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Flood severity: None

County Cocke County, TN

The radar

The Knoxville radar (KMRX), 37 km from the middle of the area, began a volume at 22:15 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.3 hours before the alert went out and 290 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: 291 J/kg
Mixed-layer CIN: -133 J/kg
Mixed-layer LCL: 1148 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Morristown, TN wrote its last area forecast discussion before this flash flood warning went out at Aug 13, 1:56 PM EDT, 4 hours 20 minutes earlier.

Area forecast discussion, Aug 13, 1:56 PM EDT, 4 hours 20 minutes before

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Hazardous weather outlook, Aug 13, 2:00 PM EDT, 4 hours 16 minutes before

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In the hours before

Special weather statement, Aug 13, 4:36 PM EDT, 1 hour 40 minutes before

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Special weather statement, Aug 13, 4:54 PM EDT, 1 hour 22 minutes before

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Special weather statement, Aug 13, 5:09 PM EDT, 1 hour 7 minutes before

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Special weather statement, Aug 13, 5:13 PM EDT, 1 hour 3 minutes before

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Special weather statement, Aug 13, 5:58 PM EDT, 18 minutes before

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The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 12, 9:36 PM EDT	Special Weather Statement	MRX	Claiborne	39 min
Aug 12, 9:54 PM EDT	Special Weather Statement	MRX	Hancock	51 min
Aug 12, 10:14 PM EDT	Special Weather Statement	MRX	Claiborne	31 min
Aug 12, 10:28 PM EDT	Special Weather Statement	MRX	Hancock, Hawkins	47 min
Aug 12, 10:35 PM EDT	Severe Thunderstorm Warning	MRX	Hancock, Hawkins, Sullivan	40 min
Aug 12, 10:39 PM EDT	Special Weather Statement	MRX	Hawkins	51 min
Aug 12, 10:44 PM EDT	Special Weather Statement	MRX	Grainger, Hamblen	46 min
Aug 12, 11:04 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Greene, Hawkins, Sullivan, Washington	41 min
Aug 12, 11:14 PM EDT	Special Weather Statement	MRX	Greene, Washington	46 min
Aug 12, 11:27 PM EDT	Special Weather Statement	MRX	Greene, Hamblen	48 min
Aug 12, 11:41 PM EDT	Special Weather Statement	MRX	Carter, Johnson, Sullivan	49 min
Aug 12, 11:56 PM EDT	Special Weather Statement	MRX	Greene, Unicoi, Washington	34 min
Aug 13, 4:36 PM EDT	Special Weather Statement	MRX	Hancock, Hawkins	39 min
Aug 13, 4:54 PM EDT	Special Weather Statement	MRX	Knox	51 min
Aug 13, 5:09 PM EDT	Special Weather Statement	MRX	Cocke, Jefferson	51 min
Aug 13, 5:13 PM EDT	Special Weather Statement	MRX	Greene, Hawkins	47 min
Aug 13, 5:46 PM EDT	Areal Flood Advisory	MRX	Cocke, Hamblen, Jefferson	23 min
Aug 13, 5:58 PM EDT	Special Weather Statement	MRX	Cocke	32 min
Aug 13, 6:09 PM EDT	Flash Flood Warning	MRX	Cocke, Hamblen, Jefferson	3 hr
Aug 13, 6:27 PM EDT	Special Weather Statement	MRX	Carter	48 min
Aug 13, 6:31 PM EDT	Special Weather Statement	MRX	Blount	29 min
Aug 13, 6:56 PM EDT	Areal Flood Advisory	MRX	Carter, Sullivan, Unicoi, Washington	3 hr
Aug 13, 7:11 PM EDT	Special Weather Statement	MRX	Blount	34 min
Aug 12, 10:07 PM EDT	Special Weather Statement	MRX	Lee	23 min
Aug 13, 6:24 AM EDT	Areal Flood Advisory	MRX	Wise	2 hr
Aug 13, 8:39 AM EDT	Flash Flood Warning	MRX	Wise	3 hr

Nearby

Flash Flood Warnings in Tennessee, 2026 Every flash flood warning in 2026

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.