Alert archive / Tennessee / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 124, NWS Morristown, TN

July 30, 20245 counties in Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jul 30, 2024, 3:09 PM EDT for 5 counties in Tennessee. It was in force for 66 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: Jul 30, 2024, 3:09 PM EDT (19:09 UTC)
Expired: Jul 30, 2024, 4:15 PM EDT
In force: 66 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Anderson County, TN, Blount County, TN, Jefferson County, TN, Knox County, TN, Sevier County, TN

The radar

The Knoxville radar (KMRX), 45 km from the middle of the area, began a volume at 19:13 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
Jul 30, 2:18 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.2 hours before the alert went out and 252 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: 1824 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 810 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 176 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.3

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 Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 30, 1:22 PM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Jul 30, 1:22 PM EDT, 1 hour 47 minutes before

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Hazardous weather outlook, Jul 30, 3:49 AM EDT, 11 hours 20 minutes before

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In the hours before

Special weather statement, Jul 30, 12:59 PM EDT, 2 hours 10 minutes before

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Special weather statement, Jul 30, 1:48 PM EDT, 1 hour 21 minutes before

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Special weather statement, Jul 30, 2:23 PM EDT, 46 minutes before

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Special weather statement, Jul 30, 2:30 PM EDT, 39 minutes before

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Special weather statement, Jul 30, 2:42 PM EDT, 27 minutes before

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Special weather statement, Jul 30, 2:51 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
Jul 30, 3:36 AM EDT	Flood Watch	MRX	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 27 more	4 days
Jul 30, 6:23 AM EDT	Special Weather Statement	MRX	Claiborne, Hancock	67 min
Jul 30, 6:42 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock	63 min
Jul 30, 7:19 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 3 more	56 min
Jul 30, 8:05 AM EDT	Special Weather Statement	MRX	Grainger, Greene, Hamblen, Unicoi, Washington	40 min
Jul 30, 8:10 AM EDT	Special Weather Statement	MRX	Carter, Johnson, Sullivan	50 min
Jul 30, 8:36 AM EDT	Special Weather Statement	MRX	Cocke	39 min
Jul 30, 9:30 AM EDT	Special Weather Statement	MRX	Hancock	45 min
Jul 30, 10:10 AM EDT	Areal Flood Advisory	MRX	Claiborne, Hancock, Hawkins	3 hr
Jul 30, 10:14 AM EDT	Special Weather Statement	MRX	Hancock	46 min
Jul 30, 10:35 AM EDT	Severe Thunderstorm Warning	MRX	Hamblen, Hancock, Hawkins	40 min
Jul 30, 11:01 AM EDT	Severe Thunderstorm Warning	MRX	Greene, Hamblen, Hawkins	44 min
Jul 30, 11:44 AM EDT	Severe Thunderstorm Warning	MRX	Greene, Unicoi, Washington	46 min
Jul 30, 11:48 AM EDT	Areal Flood Advisory	MRX	Grainger, Greene, Hamblen, Hancock, Hawkins	3 hr
Jul 30, 12:16 PM EDT	Special Weather Statement	MRX	Greene	44 min
Jul 30, 12:31 PM EDT	Special Weather Statement	MRX	Campbell	44 min
Jul 30, 12:59 PM EDT	Special Weather Statement	MRX	Campbell, Union	61 min
Jul 30, 1:48 PM EDT	Special Weather Statement	MRX	Knox	57 min
Jul 30, 2:23 PM EDT	Special Weather Statement	MRX	Union	52 min
Jul 30, 2:30 PM EDT	Special Weather Statement	MRX	Jefferson	45 min
Jul 30, 2:42 PM EDT	Special Weather Statement	MRX	Roane	48 min
Jul 30, 2:51 PM EDT	Special Weather Statement	MRX	Knox	54 min
Jul 30, 2:54 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Knox, Loudon, Roane	66 min
Jul 30, 3:15 PM EDT	Special Weather Statement	MRX	Blount	45 min
Jul 30, 3:23 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Knox, Loudon, Roane	67 min
Jul 30, 3:43 PM EDT	Special Weather Statement	MRX	Scott	32 min
Jul 30, 3:53 PM EDT	Severe Thunderstorm Warning	MRX	Grainger, Hamblen, Jefferson, Knox, Union	55 min
Jul 30, 4:07 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Greene, Jefferson, Sevier	53 min
Jul 30, 4:10 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Jefferson, Knox, Sevier	19 min
Jul 30, 4:11 PM EDT	Flash Flood Warning	MRX	Blount, Knox, Loudon, Roane	4 hr
Jul 30, 4:16 PM EDT	Special Weather Statement	MRX	Scott	44 min
Jul 30, 4:21 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Loudon, Monroe	54 min
Jul 30, 4:22 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Scott	27 min
Jul 30, 4:41 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Grainger, Knox, Union	34 min
Jul 30, 4:44 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Grainger, Union	46 min
Jul 30, 4:56 PM EDT	Flash Flood Warning	MRX	Blount, Loudon, Monroe	3 hr
Jul 30, 5:09 PM EDT	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Monroe	66 min
Jul 30, 5:09 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Grainger, Jefferson, Knox, Sevier, Union	51 min
Jul 30, 5:17 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Bradley, Hamilton, McMinn, Meigs, Rhea and 1 more	43 min
Jul 30, 5:20 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hamblen, Hawkins, Jefferson	40 min
Jul 30, 5:22 PM EDT	Areal Flood Advisory	MRX	Anderson, Campbell, Grainger, Jefferson, Knox, Scott and 2 more	3 hr
Jul 30, 5:24 PM EDT	Severe Thunderstorm Warning	MRX	McMinn, Meigs, Monroe, Polk, Rhea	66 min
Jul 30, 5:41 PM EDT	Severe Thunderstorm Warning	MRX	McMinn, Monroe, Polk	64 min
Jul 30, 5:45 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Polk	60 min
Jul 30, 5:48 PM EDT	Flash Flood Warning	MRX	Blount, McMinn, Monroe	2 hr
Jul 30, 5:49 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Cocke, Greene, Hamblen, Hawkins, Jefferson and 3 more	23 min
Jul 30, 5:49 PM EDT	Severe Thunderstorm Warning	MRX	Hamilton, Marion, Sequatchie	56 min
Jul 30, 7:36 AM EDT	Special Weather Statement	MRX	Scott	39 min
Jul 30, 6:44 PM EDT	Severe Thunderstorm Warning	MRX	Cherokee, Clay	46 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2024 Every severe thunderstorm warning in 2024

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.