Alert archive / Tennessee / Flash Flood Warnings in 2021

Flash Flood Warning 9, NWS Morristown, TN

March 28, 20218 counties in Tennessee; Lee County, Scott County, Virginia

NWS Morristown, TN issued this flash flood warning at Mar 28, 2021, 4:04 AM EDT for 8 counties in Tennessee; Lee County, Scott County, Virginia. It was in force for 7 hr. 11 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Mar 28, 2021, 4:04 AM EDT (08:04 UTC)
Expired: Mar 28, 2021, 11:15 AM EDT
In force: 7 hr
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Damage threat: Considerable
Flood severity: None

Counties Claiborne County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Sullivan County, TN, Union County, TN, Lee County, VA, Scott County, VA

The radar

The Knoxville radar (KMRX), 50 km from the middle of the area, began a volume at 08:06 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.

What was reported inside it

Time	Report	Where	Remark
Mar 28, 4:28 AM EDT	FLASH FLOOD	2 Se Tazewell, TN	NUMEROUS FLOODED ROADWAYS WITH MANY IMPASSABLE.
Mar 28, 4:53 AM EDT	FLOOD	1 Ene Jonesville, VA	REPORT FROM MPING: RIVER/CREEK OVERFLOWING; CROPLAND/YARD/BASEMENT FLOODING.
Mar 28, 6:00 AM EDT	FLASH FLOOD	Rogersville, TN	MULTIPLE ROADS WASHED OUT OR FLOODED ACROSS THE COUNTY.
Mar 28, 7:27 AM EDT	FLASH FLOOD	Mount Carmel, TN	RIVERS, STREAMS, AND CREEKS ARE ALL OVERFLOWING THEIR BANKS IN THIS AREA THESE RIVERS, STREAMS, AND CREEKS ARE FLOODING PEOPLES YARDS IN THIS AREA. STREETS ARE ALSO FLOODED IN THIS AREA THESE STREETS ARE IMPASSABLE.
Mar 28, 8:09 AM EDT	FLASH FLOOD	1 Ene Jonesville, VA	REPORT FROM MPING: STREET/ROAD FLOODING; STREET/ROAD CLOSED; VEHICLES STRANDED.
Mar 28, 8:32 AM EDT	FLASH FLOOD	Pennington Gap, VA	HIGHWAY 421 FLOODED AND IMPASSABLE.
Mar 28, 8:47 AM EDT	FLASH FLOOD	3 Wnw Surgoinsville, TN	MULTIPLE ROADS FLOODED.
Mar 28, 9:00 AM EDT	FLASH FLOOD	Kingsport, TN	PRINCETON ROAD FLOODED AND IMPASSABLE.
Mar 28, 9:00 AM EDT	FLASH FLOOD	Kingsport, TN	TIMBERTREE BRANCH ROAD FLOODED AND IMPASSABLE.
Mar 28, 9:01 AM EDT	HEAVY RAIN 4.37	Jonesville, VA	24 HOUR TOTAL.
Mar 28, 9:13 AM EDT	FLASH FLOOD	2 Sw Pennington Gap, VA	REPORT FROM MPING: HOMES OR BUILDINGS FILLED WITH WATER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 8.1 hours before the alert went out and 286 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1162 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

209 
WGUS54 KMRX 280804
FFWMRX
TNC025-057-059-063-067-073-163-173-VAC105-169-281115-
/O.NEW.KMRX.FF.W.0009.210328T0804Z-210328T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Morristown TN
404 AM EDT Sun Mar 28 2021

The National Weather Service in Morristown has issued a

* Flash Flood Warning for...
  Claiborne County in east Tennessee...
  Grainger County in east Tennessee...
  North Central Greene County in east Tennessee...
  Northern Hamblen County in east Tennessee...
  Hancock County in east Tennessee...
  Hawkins County in east Tennessee...
  Western Sullivan County in east Tennessee...
  Southeastern Union County in east Tennessee...
  Lee County in southwestern Virginia...
  Southwestern Scott County in southwestern Virginia...

* Until 715 AM EDT.

* At 404 AM EDT, local law enforcement reported thunderstorms 
  producing heavy rain in Numerous roadways are flooded across 
  Claiborne, Union, and Hawkins counties of Tennessee, and Lee 
  County of Virginia.  Some are impassable. Between 2.5 and 5 inches 
  of rain have fallen. Additional rainfall amounts of 1 to 2 inches 
  are possible in the warned area. Flash flooding is already 
  occurring.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Law enforcement reported.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Kingsport, Morristown, Rogersville, Gate City, Sneedville, 
  Rutledge, Jonesville, New Tazewell, Bean Station, Tazewell, 
  Surgoinsville, Pennington Gap, Weber City, Harrogate, Church Hill, 
  Mount Carmel, Luttrell, Baileyton, St. Charles and Duffield.

If possible, stay off the roadways early this morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3658 8370 3662 8365 3674 8314 3681 8310
      3680 8251 3643 8255 3644 8266 3641 8270
      3642 8263 3639 8263 3633 8283 3619 8376

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

DH

3 follow-up statements

624 
WGUS54 KMRX 281101
FFWMRX
TNC025-057-059-063-067-073-163-173-VAC105-169-281315-
/O.EXT.KMRX.FF.W.0009.000000T0000Z-210328T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Morristown TN
701 AM EDT Sun Mar 28 2021

The National Weather Service in Morristown has extended the

* Flash Flood Warning for...
  Claiborne County in east Tennessee...
  Grainger County in east Tennessee...
  North Central Greene County in east Tennessee...
  Northern Hamblen County in east Tennessee...
  Hancock County in east Tennessee...
  Hawkins County in east Tennessee...
  Western Sullivan County in east Tennessee...
  Southeastern Union County in east Tennessee...
  Lee County in southwestern Virginia...
  Southwestern Scott County in southwestern Virginia...

* Until 915 AM EDT.

* At 701 AM EDT, Between 3 and 5 inches of rain have fallen across 
  the area this weekend. Additional rainfall amounts up to 1 inch 
  are possible this morning in the warned area. Flash flooding is 
  already occurring. Numerous roadways are flooded across Claiborne, 
  Union, and Hawkins counties of Tennessee, and Lee County of 
  Virginia.  Some are impassable.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding.

  SOURCE...Law enforcement reported.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Kingsport, Morristown, Rogersville, Gate City, Sneedville, 
  Rutledge, Jonesville, New Tazewell, Bean Station, Tazewell, 
  Surgoinsville, Pennington Gap, Weber City, Harrogate, Church Hill, 
  Mount Carmel, Luttrell, Baileyton, St. Charles and Duffield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3658 8370 3662 8365 3674 8314 3681 8310
      3680 8251 3643 8255 3644 8266 3641 8270
      3642 8263 3639 8263 3633 8283 3619 8376

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

GC

476 
WGUS54 KMRX 281301
FFWMRX
TNC025-057-059-063-067-073-163-173-VAC105-169-281515-
/O.EXT.KMRX.FF.W.0009.000000T0000Z-210328T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Morristown TN
901 AM EDT Sun Mar 28 2021

The National Weather Service in Morristown has extended the

* Flash Flood Warning for...
  Claiborne County in east Tennessee...
  Grainger County in east Tennessee...
  North Central Greene County in east Tennessee...
  Northern Hamblen County in east Tennessee...
  Hancock County in east Tennessee...
  Hawkins County in east Tennessee...
  Western Sullivan County in east Tennessee...
  Southeastern Union County in east Tennessee...
  Lee County in southwestern Virginia...
  Southwestern Scott County in southwestern Virginia...

* Until 1115 AM EDT.

* At 901 AM EDT, local law enforcement reported numerous roadways 
  are flooded across Claiborne, Union, and Hawkins counties of 
  Tennessee, and Lee County of Virginia.  Some are impassable. 
  Between 3 and 5 inches of rain have fallen. Flash flooding is 
  already occurring.

  HAZARD...Life threatening flash flooding.

  SOURCE...Law enforcement reported.

  IMPACT...Life threatening flash flooding of creeks and streams,
           urban areas, highways, streets and underpasses.

* Some locations that will experience flash flooding include...
  Kingsport, Morristown, Rogersville, Gate City, Sneedville, 
  Rutledge, Jonesville, New Tazewell, Bean Station, Tazewell, 
  Surgoinsville, Pennington Gap, Weber City, Harrogate, Church Hill, 
  Mount Carmel, Luttrell, Baileyton, St. Charles and Duffield.

If possible, stay off the roadways early this morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3658 8370 3662 8365 3674 8314 3681 8310
      3680 8251 3643 8255 3644 8266 3641 8270
      3642 8263 3639 8263 3633 8283 3619 8376

FLASH FLOOD...OBSERVED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE

$$

19

322 
WGUS74 KMRX 281513
FFSMRX

Flash Flood Statement
National Weather Service Morristown TN
1113 AM EDT Sun Mar 28 2021

TNC025-057-059-063-067-073-163-173-VAC105-169-281523-
/O.EXP.KMRX.FF.W.0009.000000T0000Z-210328T1515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Claiborne TN-Grainger TN-Greene TN-Hamblen TN-Hancock TN-Hawkins
TN-Sullivan TN-Union TN-Lee VA-Scott VA-
1113 AM EDT Sun Mar 28 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 1115 AM EDT THIS MORNING FOR 
CLAIBORNE, GRAINGER, NORTH CENTRAL GREENE, NORTHERN HAMBLEN, 
HANCOCK, HAWKINS, WESTERN SULLIVAN, SOUTHEASTERN UNION, LEE AND 
SOUTHWESTERN SCOTT COUNTIES...

Even though the heavy rain has ended it will take a long time for 
flood waters to recede. Avoid driving across flooded roads.

LAT...LON 3658 8370 3662 8365 3674 8314 3681 8310
      3680 8251 3643 8255 3644 8266 3641 8270
      3642 8263 3639 8263 3633 8283 3619 8376

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 8:05 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Grainger, Hancock, Union	40 min
Mar 27, 8:09 PM EDT	Flash Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 27, 8:11 PM EDT	Special Weather Statement	MRX	Sequatchie	49 min
Mar 27, 8:12 PM EDT	Special Weather Statement	MRX	Sequatchie	48 min
Mar 27, 8:31 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Johnson, Sullivan	44 min
Mar 27, 8:36 PM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Hancock, Hawkins, Sullivan, Union	3 hr
Mar 27, 8:43 PM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hamblen, Hancock, Hawkins	47 min
Mar 27, 8:55 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Hamilton, Marion, Rhea, Sequatchie	3 hr
Mar 27, 8:57 PM EDT	Special Weather Statement	MRX	Sullivan	48 min
Mar 27, 9:02 PM EDT	River Flood Warning	MRX	Morgan, Roane	24 hr
Mar 27, 9:10 PM EDT	Special Weather Statement	MRX	Jefferson	50 min
Mar 27, 9:21 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hamblen, Hawkins, Washington	39 min
Mar 27, 9:22 PM EDT	Special Weather Statement	MRX	Loudon	38 min
Mar 27, 9:25 PM EDT	Special Weather Statement	MRX	Loudon	50 min
Mar 27, 9:42 PM EDT	Special Weather Statement	MRX	Knox	48 min
Mar 27, 9:48 PM EDT	Severe Thunderstorm Warning	MRX	Carter, Greene, Unicoi, Washington	24 min
Mar 27, 9:50 PM EDT	Special Weather Statement	MRX	Johnson	40 min
Mar 27, 10:00 PM EDT	Special Weather Statement	MRX	Greene, Unicoi	45 min
Mar 27, 10:19 PM EDT	Areal Flood Advisory	MRX	Carter, Greene, Hawkins, Sullivan, Washington	3 hr
Mar 27, 10:32 PM EDT	Special Weather Statement	MRX	Anderson, Campbell, Morgan	43 min
Mar 27, 11:13 PM EDT	Flash Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 27, 11:37 PM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Hancock, Hawkins, Sullivan, Union	3 hr
Mar 28, 12:14 AM EDT	Special Weather Statement	MRX	Claiborne, Grainger, Union	46 min
Mar 28, 12:18 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Grainger, Union	57 min
Mar 28, 12:35 AM EDT	Special Weather Statement	MRX	Campbell, Morgan, Scott	40 min
Mar 28, 12:41 AM EDT	Special Weather Statement	MRX	Grainger, Hamblen	34 min
Mar 28, 12:55 AM EDT	Special Weather Statement	MRX	Hamblen, Hancock, Hawkins	50 min
Mar 28, 1:14 AM EDT	Flash Flood Warning	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	3 hr
Mar 28, 1:18 AM EDT	Special Weather Statement	MRX	Campbell, Claiborne, Union	42 min
Mar 28, 1:39 AM EDT	Special Weather Statement	MRX	Sullivan	51 min
Mar 28, 1:43 AM EDT	Areal Flood Warning	MRX	Carter, Johnson, Sullivan, Washington	3 hr
Mar 28, 1:47 AM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins, Sullivan, Washington	43 min
Mar 28, 2:11 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	3 hr
Mar 28, 2:18 AM EDT	Severe Thunderstorm Warning	MRX	Johnson, Sullivan	42 min
Mar 28, 2:58 AM EDT	Flash Flood Warning	MRX	Carter, Johnson, Sullivan, Washington	3 hr
Mar 28, 3:12 AM EDT	Special Weather Statement	MRX	Morgan, Scott	48 min
Mar 28, 4:09 AM EDT	Special Weather Statement	MRX	Campbell, Morgan, Scott	51 min
Mar 28, 4:16 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Sullivan	3 hr
Mar 28, 4:27 AM EDT	Special Weather Statement	MRX	Bledsoe	63 min
Mar 28, 4:58 AM EDT	Special Weather Statement	MRX	Anderson, Campbell, Claiborne, Morgan	47 min
Mar 28, 5:03 AM EDT	Special Weather Statement	MRX	Meigs, Rhea, Roane	42 min
Mar 28, 5:07 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	5 hr
Mar 28, 5:15 AM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Claiborne, Union	17 min
Mar 28, 5:26 AM EDT	Areal Flood Advisory	MRX	Bledsoe, Rhea, Sequatchie	71 min
Mar 28, 5:38 AM EDT	Special Weather Statement	MRX	Grainger, Hancock, Union	52 min
Mar 28, 5:43 AM EDT	Special Weather Statement	MRX	Anderson, Knox	47 min
Mar 28, 5:43 AM EDT	Severe Thunderstorm Warning	MRX	Marion	47 min
Mar 28, 5:48 AM EDT	Special Weather Statement	MRX	Meigs, Rhea, Roane	42 min
Mar 28, 6:08 AM EDT	Special Weather Statement	MRX	Hawkins	52 min
Mar 28, 6:19 AM EDT	Special Weather Statement	MRX	Hamilton, McMinn	41 min
Mar 28, 6:34 AM EDT	Special Weather Statement	MRX	Grainger, Hamblen, Hancock, Hawkins, Jefferson, Sevier	41 min
Mar 28, 6:36 AM EDT	Flash Flood Warning	MRX	Bledsoe, Marion, Rhea, Sequatchie	6 hr
Mar 28, 6:40 AM EDT	Flash Flood Warning Considerable damage threat	MRX	Anderson, Knox, Loudon, Morgan, Roane, Union	5 hr
Mar 28, 6:43 AM EDT	Special Weather Statement	MRX	Knox, Loudon, Meigs, Roane	47 min
Mar 28, 6:51 AM EDT	Special Weather Statement	MRX	Bradley, McMinn, Monroe, Polk	39 min
Mar 28, 7:08 AM EDT	Flash Flood Warning	MRX	Sullivan	6 hr
Mar 28, 7:15 AM EDT	Special Weather Statement	MRX	Cocke, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	45 min
Mar 28, 7:17 AM EDT	Flash Flood Warning	MRX	Bradley, Hamilton, McMinn, Meigs, Rhea, Sequatchie	6 hr
Mar 28, 7:27 AM EDT	Special Weather Statement	MRX	Blount, Sevier	33 min
Mar 28, 7:27 AM EDT	Special Weather Statement	MRX	Polk	63 min
Mar 28, 7:34 AM EDT	River Flood Warning	MRX	Claiborne, Grainger, Hancock	51 hr
Mar 28, 7:41 AM EDT	River Flood Warning	MRX	Claiborne, Union	52 hr
Mar 28, 7:46 AM EDT	River Flood Warning	MRX	Hawkins, Sullivan	35 hr
Mar 28, 7:49 AM EDT	Flash Flood Warning	MRX	Grainger, Hamblen, Jefferson, Knox, Sevier	5 hr
Mar 28, 7:52 AM EDT	Flash Flood Warning	MRX	Bradley, Hamilton, Polk	5 hr
Mar 28, 8:00 AM EDT	Special Weather Statement	MRX	Carter, Cocke, Greene, Hawkins, Sullivan, Unicoi and 1 more	45 min
Mar 28, 8:03 AM EDT	Flash Flood Warning	MRX	Blount, Knox, Loudon, McMinn, Monroe, Polk and 1 more	4 hr
Mar 28, 8:21 AM EDT	Special Weather Statement	MRX	Sevier	24 min
Mar 28, 8:26 AM EDT	Flash Flood Warning	MRX	Blount, Cocke, Sevier	5 hr
Mar 28, 8:43 AM EDT	Flash Flood Warning	MRX	Greene, Hawkins, Unicoi, Washington	4 hr
Mar 28, 8:45 AM EDT	Flash Flood Warning	MRX	Carter, Johnson	4 hr
Mar 28, 9:05 AM EDT	River Flood Warning	MRX	Hancock	23 hr
Mar 28, 9:32 AM EDT	River Flood Warning	MRX	Cocke	20 hr
Mar 28, 10:08 AM EDT	Areal Flood Warning	MRX	Anderson, Campbell, Claiborne, Morgan, Scott, Union	21 hr
Mar 28, 11:07 AM EDT	River Flood Warning	MRX	Hancock	33 hr
Mar 28, 11:10 AM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	21 hr
Mar 28, 11:11 AM EDT	Areal Flood Warning	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 2 more	20 hr
Mar 28, 11:43 AM EDT	Areal Flood Warning	MRX	Anderson, Knox, Loudon, Morgan, Roane	3 hr
Mar 28, 12:38 PM EDT	Areal Flood Warning	MRX	Greene, Hawkins, Unicoi, Washington	3 hr
Mar 28, 12:43 PM EDT	Areal Flood Warning	MRX	Carter, Johnson	5 hr

Nearby

Flash Flood Warnings in Tennessee, 2021 Flash Flood Warnings in Virginia, 2021 Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.