Alert archive / Virginia / Flash Flood Warnings in 2022

Flash Flood Warning 27, NWS Morristown, TN

July 29, 2022Lee County, Virginia

NWS Morristown, TN issued this flash flood warning at Jul 29, 2022, 12:09 PM EDT for Lee County, Virginia. It was in force for 2 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: Jul 29, 2022, 12:09 PM EDT (16:09 UTC)
Expired: Jul 29, 2022, 2:15 PM EDT
In force: 2 hr
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Flood severity: None

County Lee County, VA

The radar

The Knoxville radar (KMRX), 65 km from the middle of the area, began a volume at 16:09 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

Nashville Metro, TN (KBNA), launched 12:00Z, 4.2 hours before the alert went out and 317 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: 738 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 722 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 76 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

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 29, 11:24 AM EDT, 45 minutes earlier.

Area forecast discussion, Jul 29, 11:24 AM EDT, 45 minutes before

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Hazardous weather outlook, Jul 29, 4:37 AM EDT, 7 hours 32 minutes before

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In the hours before

Local storm report, Jul 29, 8:35 AM EDT, 3 hours 34 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 28, 8:00 PM EDT	Special Weather Statement	MRX	Bledsoe, Meigs, Rhea	45 min
Jul 28, 8:29 PM EDT	Severe Thunderstorm Warning	MRX	Loudon, Meigs, Rhea, Roane	46 min
Jul 28, 8:39 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Rhea	3 hr
Jul 28, 8:43 PM EDT	Special Weather Statement	MRX	Meigs	47 min
Jul 28, 9:04 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Rhea	41 min
Jul 28, 9:08 PM EDT	Special Weather Statement	MRX	Loudon, Roane	52 min
Jul 28, 9:38 PM EDT	Special Weather Statement	MRX	Bradley, McMinn, Monroe, Polk	37 min
Jul 28, 10:08 PM EDT	Special Weather Statement	MRX	Monroe	52 min
Jul 28, 10:10 PM EDT	Special Weather Statement	MRX	Polk	50 min
Jul 28, 11:31 PM EDT	Areal Flood Advisory	MRX	Monroe	4 hr
Jul 29, 1:13 AM EDT	Special Weather Statement	MRX	Scott	47 min
Jul 29, 2:32 AM EDT	Areal Flood Advisory	MRX	Scott	3 hr
Jul 29, 10:49 AM EDT	Areal Flood Advisory	MRX	Bledsoe, Meigs, Rhea, Roane	3 hr
Jul 29, 10:56 AM EDT	Areal Flood Advisory	MRX	Lee, Scott	3 hr
Jul 29, 12:59 PM EDT	Areal Flood Advisory	MRX	Russell, Scott, Washington, City of Bristol	3 hr
Jul 28, 10:48 PM EDT	Special Weather Statement	MRX	Cherokee, Clay	57 min
Jul 28, 10:56 PM EDT	Areal Flood Advisory	MRX	Cherokee, Clay	3 hr
Jul 28, 11:13 PM EDT	Flash Flood Warning	MRX	Cherokee, Clay	4 hr
Jul 29, 3:00 AM EDT	Areal Flood Advisory	MRX	Cherokee, Clay	2 hr

Nearby

Flash Flood Warnings in Virginia, 2022 Every flash flood warning 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.