Alert archive / Tennessee / Flash Flood Warnings in 2023

Flash Flood Warning 15, NWS Morristown, TN

July 14, 2023Sullivan County, Tennessee; City of Bristol, Virginia

NWS Morristown, TN issued this flash flood warning at Jul 14, 2023, 3:06 AM EDT for Sullivan County, Tennessee; City of Bristol, Virginia. It was in force for 114 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 14, 2023, 3:06 AM EDT (07:06 UTC)
Expired: Jul 14, 2023, 5:00 AM EDT
In force: 114 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Flood severity: None

Counties Sullivan County, TN, City of Bristol, VA

The radar

The Knoxville radar (KMRX), 112 km from the middle of the area, began a volume at 07:09 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 00:00Z, 7.1 hours before the alert went out and 217 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: 1579 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1397 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.5

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 Jul 14, 1:54 AM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, Jul 14, 1:54 AM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, Jul 13, 2:55 PM EDT, 12 hours 11 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 14, 2:25 AM EDT	Areal Flood Advisory	MRX	Sullivan	44 min
Jul 14, 4:00 AM EDT	Areal Flood Advisory	MRX	Carter, Greene, Johnson, Washington	2 hr
Jul 14, 4:41 AM EDT	Flash Flood Warning	MRX	Washington	4 hr
Jul 14, 5:45 PM EDT	Special Weather Statement	MRX	Sullivan	45 min
Jul 14, 6:19 PM EDT	Severe Thunderstorm Warning	MRX	Sullivan	41 min
Jul 14, 7:35 PM EDT	Areal Flood Advisory	MRX	Johnson, Sullivan	115 min
Jul 14, 7:36 PM EDT	Special Weather Statement	MRX	Johnson	24 min
Jul 14, 4:40 PM EDT	Special Weather Statement	MRX	Russell	50 min
Jul 14, 5:09 PM EDT	Special Weather Statement	MRX	City of Norton	51 min
Jul 14, 6:54 PM EDT	Special Weather Statement	MRX	City of Bristol	51 min

Nearby

Flash Flood Warnings in Tennessee, 2023 Flash Flood Warnings in Virginia, 2023 Every flash flood 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.