Alert archive / Tennessee / Flash Flood Warnings in 2024

Flash Flood Warning 25, NWS Morristown, TN

August 2, 2024Greene County, Tennessee

NWS Morristown, TN issued this flash flood warning at Aug 2, 2024, 3:26 PM EDT for Greene County, Tennessee. It was in force for 4 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 2, 2024, 3:26 PM EDT (19:26 UTC)
Expired: Aug 2, 2024, 7:00 PM EDT
In force: 4 hr
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Flood severity: None

County Greene County, TN

The radar

The Knoxville radar (KMRX), 50 km from the middle of the area, began a volume at 19:29 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, 7.4 hours before the alert went out and 265 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: 811 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1010 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 4 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 2, 3:13 PM EDT, 13 minutes earlier.

Area forecast discussion, Aug 2, 3:13 PM EDT, 13 minutes before

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Hazardous weather outlook, Aug 2, 3:22 PM EDT, 4 minutes before

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In the hours before

Special weather statement, Aug 2, 1:10 PM EDT, 2 hours 16 minutes before

Special Weather Statement
National Weather Service Morristown TN
110 PM EDT Fri Aug 2 2024

TNZ017-018-VAZ008-021815-
Sullivan TN-Johnson TN-Washington VA-
110 PM EDT Fri Aug 2 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN SULLIVAN...
NORTHEASTERN JOHNSON AND WASHINGTON COUNTIES AND THE CITY OF BRISTOL
THROUGH 215 PM EDT...

At 109 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Bristol Va, moving east at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Bristol Tn, Bristol Va, Abingdon, Glade Spring, Damascus, Lindell,
Laurel Bloomery, Holston, Hilander Park, and Emory-Meadow View.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3662 8161 3661 8165 3659 8168 3657 8168
      3653 8171 3652 8170 3655 8221 3678 8217
      3680 8211 3683 8212 3686 8208 3688 8198
      3687 8194 3690 8187 3691 8182 3679 8170
      3664 8162 3664 8161
TIME...MOT...LOC 1709Z 272DEG 28KT 3672 8212

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

DGS

Local storm report, Aug 2, 1:39 PM EDT, 1 hour 47 minutes before

Preliminary Local Storm Report
National Weather Service Morristown TN
139 PM EDT Fri Aug 2 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1150 AM     Tstm Wnd Dmg     Dryden                  36.78N 82.94W
08/02/2024                   Lee                VA   911 Call Center

            A couple of trees down.

&&

Local storm report, Aug 2, 2:27 PM EDT, 59 minutes before

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Local storm report, Aug 2, 2:34 PM EDT, 52 minutes before

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Special weather statement, Aug 2, 2:52 PM EDT, 34 minutes before

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Special weather statement, Aug 2, 3:19 PM EDT, 7 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 1, 8:29 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Hancock	46 min
Aug 1, 8:53 PM EDT	Special Weather Statement	MRX	Anderson, Claiborne, Knox, Union	52 min
Aug 1, 8:55 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Knox, Union	50 min
Aug 1, 9:04 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Loudon	41 min
Aug 1, 9:08 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hancock, Jefferson, Union	52 min
Aug 1, 9:41 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Grainger, Greene, Hamblen, Hancock, Hawkins and 1 more	49 min
Aug 1, 9:43 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Grainger, Greene, Hamblen, Hancock, Hawkins and 1 more	47 min
Aug 1, 9:48 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Cocke, Grainger, Greene, Hamblen, Jefferson and 3 more	57 min
Aug 1, 10:30 PM EDT	Special Weather Statement	MRX	Greene, Hamblen	45 min
Aug 1, 10:43 PM EDT	Special Weather Statement	MRX	Blount, Cocke, Sevier	62 min
Aug 2, 1:37 PM EDT	Areal Flood Advisory	MRX	Carter, Greene, Hawkins, Johnson, Sullivan, Unicoi and 1 more	113 min
Aug 2, 1:55 PM EDT	Flash Flood Warning	MRX	Carter, Sullivan, Washington	5 hr
Aug 2, 2:52 PM EDT	Special Weather Statement	MRX	Campbell	53 min
Aug 2, 3:10 PM EDT	Areal Flood Advisory	MRX	Campbell, Scott	4 hr
Aug 2, 3:19 PM EDT	Special Weather Statement	MRX	Scott	41 min
Aug 2, 4:06 PM EDT	Special Weather Statement	MRX	Claiborne	39 min
Aug 2, 4:16 PM EDT	Severe Thunderstorm Warning	MRX	Hawkins	38 min
Aug 2, 4:34 PM EDT	Special Weather Statement	MRX	Scott	41 min
Aug 2, 4:45 PM EDT	Areal Flood Advisory	MRX	Claiborne, Hancock, Hawkins, Union	2 hr
Aug 2, 5:08 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Scott, Union	26 min
Aug 2, 5:18 PM EDT	Flash Flood Warning Considerable damage threat	MRX	Claiborne	3 hr
Aug 2, 5:21 PM EDT	Special Weather Statement	MRX	Hancock	39 min
Aug 2, 5:28 PM EDT	Flash Flood Warning	MRX	Campbell, Claiborne, Hancock, Hawkins, Union	3 hr
Aug 2, 6:08 PM EDT	Special Weather Statement	MRX	Campbell	52 min
Aug 2, 6:33 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Scott	27 min
Aug 2, 6:40 PM EDT	Special Weather Statement	MRX	Grainger, Hamblen	50 min
Aug 2, 7:01 PM EDT	Special Weather Statement	MRX	Anderson, Union	44 min
Aug 2, 7:06 PM EDT	Flash Flood Warning	MRX	Claiborne, Grainger, Hancock, Hawkins, Union	2 hr
Aug 2, 7:30 PM EDT	Flash Flood Warning	MRX	Anderson, Campbell, Knox, Morgan, Scott, Union	3 hr
Aug 2, 7:39 PM EDT	Special Weather Statement	MRX	Grainger, Union	51 min
Aug 1, 9:37 PM EDT	Special Weather Statement	MRX	City of Norton	38 min
Aug 2, 11:32 AM EDT	Severe Thunderstorm Warning	MRX	Lee, Scott, Wise, City of Norton	43 min
Aug 2, 12:11 PM EDT	Special Weather Statement	MRX	Wise, City of Norton	49 min
Aug 2, 12:38 PM EDT	Special Weather Statement	MRX	City of Bristol	52 min
Aug 2, 1:10 PM EDT	Special Weather Statement	MRX	Washington, City of Bristol	65 min
Aug 2, 1:26 PM EDT	Severe Thunderstorm Warning	MRX	Washington	34 min
Aug 2, 3:47 PM EDT	Special Weather Statement	MRX	Lee	43 min

Nearby

Flash Flood Warnings in Tennessee, 2024 Every flash flood 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.