Alert archive / Tennessee / Flash Flood Watches in 2021
Flash Flood Watch 2, NWS Morristown, TN
NWS Morristown, TN issued this flash flood watch at Mar 24, 2021, 2:53 PM EDT for 18 counties in Tennessee; Cherokee County, Clay County, North Carolina. It took effect at Mar 25, 2021, 2:00 AM EDT. It was in force for 26 hr.
The area
The counties it named.
The facts
- Issued
- Mar 24, 2021, 2:53 PM EDT (18:53 UTC)
- In effect from
- Mar 25, 2021, 2:00 AM EDT
- Expired
- Mar 26, 2021, 3:40 AM EDT
- In force
- 26 hr
- Issued by
- NWS Morristown, TN
- Flood severity
- None
Counties Cherokee County, NC, Clay County, NC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Hamilton County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Sequatchie County, TN, Sevier County, TN
The radar
The Knoxville radar (KMRX), 119 km from the middle of the area, began a volume at 18:55 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, 6.9 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 700 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 199 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
438 WGUS64 KMRX 241853 FFAMRX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Morristown TN 253 PM EDT Wed Mar 24 2021 NCZ060-061-TNZ035-067-068-081>087-098>102-250400- /O.NEW.KMRX.FF.A.0002.210325T0600Z-210326T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherokee-Clay-Morgan-Roane-Loudon-Sequatchie-Bledsoe-Rhea-Meigs- McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley- West Polk-East Polk- Including the cities of Murphy, Harriman, Citico, Rockwood, Athens, Topton, Madisonville, Dentville, Parksville, Tasso, Whitwell, Big Frog Mountain, Shooting Creek, South Pittsburg, Monteagle, Loudon, Cleveland, Martin Springs, Archville, Dayton, Bullet Creek, Bradbury, Dunlap, Sweetwater, Powells Crossroads, Unaka, Andrews, Palio, Pine Orchard, Tusquitee, Cagle, Fairview, Clear Water, Chattanooga, Ducktown, Brayton, Oliver Springs, Petros, Benton, Coker Creek, High Point, Melvine, Haletown (Guild), Big Spring, Turtletown, Pikeville, Reliance, Etowah, Marble, Lone Oak, Lenoir City, Spring City, Grandview, Brasstown, Old Cumberland, Kingston, Cartwright, Old Washington, Hiawasse Dam, Jasper, Violet, Evensville, Hayesville, Eagle Furnace, Conasauga, and Mount Crest 253 PM EDT Wed Mar 24 2021 /153 PM CDT Wed Mar 24 2021/ ...FLASH FLOOD WATCH IN EFFECT FROM 2 AM EDT /1 AM CDT/ THURSDAY THROUGH FRIDAY MORNING... The National Weather Service in Morristown has issued a * Flash Flood Watch for Portions of southwest North Carolina, including the following areas, Cherokee and Clay. Portions of east Tennessee, including the following areas, Bledsoe, Bradley, East Polk, Hamilton, Loudon, Marion, McMinn, Meigs, Morgan, Northwest Monroe, Rhea, Roane, Sequatchie, Southeast Monroe and West Polk. * From 2 AM EDT /1 AM CDT/ Thursday through Friday morning. * Widespread heavy rainfall is forecast early Thursday morning as a warm front lifts northwards through the Tennessee Valley. This round of rain will produce up to one inch of rainfall across the area. This event will saturate the soils across the area. Another round of heavy rainfall is forecast later Thursday afternoon and Thursday night as strong to severe storms approach from the west. These storms will be proficient rain producers. This additional rainfall will exacerbate any ongoing issues and lead to additional flooding issues Thursday afternoon and night. 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. A Flash Flood Watch means that conditions may develop that lead to Flash Flooding. Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Diegan
5 follow-up statements
200 WGUS64 KMRX 250127 FFAMRX Flood Watch National Weather Service Morristown TN 927 PM EDT Wed Mar 24 2021 NCZ060-061-TNZ035-067-068-081>087-098>102-250900- /O.CON.KMRX.FF.A.0002.210325T0600Z-210326T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherokee-Clay-Morgan-Roane-Loudon-Sequatchie-Bledsoe-Rhea-Meigs- McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley- West Polk-East Polk- Including the cities of Murphy, Harriman, Citico, Rockwood, Athens, Topton, Madisonville, Dentville, Parksville, Tasso, Whitwell, Big Frog Mountain, Shooting Creek, South Pittsburg, Monteagle, Loudon, Cleveland, Martin Springs, Archville, Dayton, Bullet Creek, Bradbury, Dunlap, Sweetwater, Powells Crossroads, Unaka, Andrews, Palio, Pine Orchard, Tusquitee, Cagle, Fairview, Clear Water, Chattanooga, Ducktown, Brayton, Oliver Springs, Petros, Benton, Coker Creek, High Point, Melvine, Haletown (Guild), Big Spring, Turtletown, Pikeville, Reliance, Etowah, Marble, Lone Oak, Lenoir City, Spring City, Grandview, Brasstown, Old Cumberland, Kingston, Cartwright, Old Washington, Hiawasse Dam, Jasper, Violet, Evensville, Hayesville, Eagle Furnace, Conasauga, and Mount Crest 927 PM EDT Wed Mar 24 2021 /827 PM CDT Wed Mar 24 2021/ ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 2 AM EDT /1 AM CDT/ THURSDAY THROUGH FRIDAY MORNING... The Flash Flood Watch continues for * Portions of southwest North Carolina, including the following areas, Cherokee and Clay. Portions of east Tennessee, including the following areas, Bledsoe, Bradley, East Polk, Hamilton, Loudon, Marion, McMinn, Meigs, Morgan, Northwest Monroe, Rhea, Roane, Sequatchie, Southeast Monroe and West Polk. * From 2 AM EDT /1 AM CDT/ Thursday through Friday morning. * Widespread heavy rainfall is forecast early Thursday morning as a warm front lifts northwards through the Tennessee Valley. This round of rain will produce up to one inch of rainfall across the area. This event will saturate the soils across the area. Another round of heavy rainfall is forecast later Thursday afternoon and Thursday night as strong to severe storms approach from the west. These storms will be proficient rain producers. This additional rainfall will exacerbate any ongoing issues and lead to additional flooding issues Thursday afternoon and night. 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. && $$
118 WGUS64 KMRX 250751 FFAMRX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Morristown TN 351 AM EDT Thu Mar 25 2021 TNZ036-069>074-252100- /O.EXA.KMRX.FF.A.0002.000000T0000Z-210326T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Anderson-Knox-Jefferson-Northwest Blount-Blount Smoky Mountains- North Sevier-Sevier Smoky Mountains- Including the cities of White Pine, Knoxville, Gatlinburg, Strawberry Plains, Elkmont, Happy Valley, Chestnut Hill, Seymour, Bearden, Harrisburg, Pigeon Forge, Maryville, McMahan, Alcoa, Lake Forest, Dandridge, Cades Cove, Kodak, Sevierville, Clinton, Jefferson City, and Oak Ridge 351 AM EDT Thu Mar 25 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING... The National Weather Service in Morristown has expanded the * Flash Flood Watch to include A portion of east Tennessee, including the following areas, Anderson, Blount Smoky Mountains, Jefferson, Knox, North Sevier, Northwest Blount and Sevier Smoky Mountains. * Through Friday morning. * Widespread heavy rainfall is forecast this morning as a warm front lifts northwards through the Tennessee Valley. This round of rain will produce up to one inch of rainfall across the area. This event will saturate the soils across the area. Another round of heavy rainfall is forecast later Thursday afternoon and Thursday night as strong to severe storms approach from the west. These storms will be proficient rain producers. This additional rainfall will exacerbate any ongoing issues and lead to additional flooding issues Thursday afternoon and night. 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. && $$ NCZ060-061-TNZ035-067-068-081>087-098>102-252100- /O.CON.KMRX.FF.A.0002.000000T0000Z-210326T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherokee-Clay-Morgan-Roane-Loudon-Sequatchie-Bledsoe-Rhea-Meigs- McMinn-Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley- West Polk-East Polk- Including the cities of Murphy, Harriman, Citico, Rockwood, Athens, Topton, Madisonville, Dentville, Parksville, Tasso, Whitwell, Big Frog Mountain, Shooting Creek, South Pittsburg, Monteagle, Loudon, Cleveland, Martin Springs, Archville, Dayton, Bullet Creek, Bradbury, Dunlap, Sweetwater, Powells Crossroads, Unaka, Andrews, Palio, Pine Orchard, Tusquitee, Cagle, Fairview, Clear Water, Chattanooga, Ducktown, Brayton, Oliver Springs, Petros, Benton, Coker Creek, High Point, Melvine, Haletown (Guild), Big Spring, Turtletown, Pikeville, Reliance, Etowah, Marble, Lone Oak, Lenoir City, Spring City, Grandview, Brasstown, Old Cumberland, Kingston, Cartwright, Old Washington, Hiawasse Dam, Jasper, Violet, Evensville, Hayesville, Eagle Furnace, Conasauga, and Mount Crest 351 AM EDT Thu Mar 25 2021 /251 AM CDT Thu Mar 25 2021/ ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING... The Flash Flood Watch continues for * Portions of southwest North Carolina, including the following areas, Cherokee and Clay. Portions of east Tennessee, including the following areas, Bledsoe, Bradley, East Polk, Hamilton, Loudon, Marion, McMinn, Meigs, Morgan, Northwest Monroe, Rhea, Roane, Sequatchie, Southeast Monroe and West Polk. * Through Friday morning. * Widespread heavy rainfall is forecast this morning as a warm front lifts northwards through the Tennessee Valley. This round of rain will produce up to one inch of rainfall across the area. This event will saturate the soils across the area. Another round of heavy rainfall is forecast later Thursday afternoon and Thursday night as strong to severe storms approach from the west. These storms will be proficient rain producers. This additional rainfall will exacerbate any ongoing issues and lead to additional flooding issues Thursday afternoon and night. 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. && $$ BW
742 WGUS64 KMRX 251652 FFAMRX Flood Watch National Weather Service Morristown TN 1252 PM EDT Thu Mar 25 2021 NCZ060-061-TNZ035-036-067>074-081>087-098>102-260600- /O.CON.KMRX.FF.A.0002.000000T0000Z-210326T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherokee-Clay-Morgan-Anderson-Roane-Loudon-Knox-Jefferson- Northwest Blount-Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains-Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe- Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk- Including the cities of White Pine, Bradbury, Rockwood, Reliance, Dentville, Shooting Creek, Cades Cove, Powells Crossroads, Cagle, Tusquitee, Fairview, Jefferson City, Parksville, Haletown (Guild), Big Spring, Whitwell, Happy Valley, Spring City, Old Cumberland, Cartwright, Old Washington, Jasper, Turtletown, Knoxville, Strawberry Plains, Oak Ridge, Tasso, Clear Water, Alcoa, High Point, Pikeville, Coker Creek, Grandview, Seymour, Hiawasse Dam, Archville, Violet, Eagle Furnace, Madisonville, Harriman, Gatlinburg, Conasauga, Monteagle, Elkmont, Chestnut Hill, Dayton, Marble, Brayton, Pine Orchard, Maryville, Petros, Lake Forest, Melvine, Clinton, Etowah, Brasstown, Big Frog Mountain, Unaka, Cleveland, Ducktown, Martin Springs, Sweetwater, Bullet Creek, Athens, Topton, South Pittsburg, Loudon, Bearden, Murphy, Dunlap, Harrisburg, Andrews, Palio, Citico, Evensville, Chattanooga, Pigeon Forge, McMahan, Oliver Springs, Benton, Mount Crest, Kodak, Sevierville, Lone Oak, Lenoir City, Dandridge, Kingston, and Hayesville 1252 PM EDT Thu Mar 25 2021 /1152 AM CDT Thu Mar 25 2021/ ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY MORNING... The Flash Flood Watch continues for * Portions of southwest North Carolina, including the following areas, Cherokee and Clay. Portions of east Tennessee, including the following areas, Anderson, Bledsoe, Blount Smoky Mountains, Bradley, East Polk, Hamilton, Jefferson, Knox, Loudon, Marion, McMinn, Meigs, Morgan, North Sevier, Northwest Blount, Northwest Monroe, Rhea, Roane, Sequatchie, Sevier Smoky Mountains, Southeast Monroe and West Polk. * Through Friday morning. * Widespread heavy rainfall is forecast this morning as a warm front lifts northwards through the Tennessee Valley. This round of rain will produce up to one inch of rainfall across the area. This event will saturate the soils across the area. Another round of heavy rainfall is forecast later Thursday afternoon and Thursday night as strong to severe storms approach from the west. These storms will be proficient rain producers. This additional rainfall will exacerbate any ongoing issues and lead to additional flooding issues Thursday afternoon and night. 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. && $$ Diegan
022 WGUS64 KMRX 260156 FFAMRX Flood Watch National Weather Service Morristown TN 956 PM EDT Thu Mar 25 2021 NCZ060-061-TNZ035-036-067>074-081>087-098>102-261200- /O.CON.KMRX.FF.A.0002.000000T0000Z-210326T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherokee-Clay-Morgan-Anderson-Roane-Loudon-Knox-Jefferson- Northwest Blount-Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains-Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe- Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk- Including the cities of White Pine, Bradbury, Rockwood, Reliance, Dentville, Shooting Creek, Cades Cove, Powells Crossroads, Cagle, Tusquitee, Fairview, Jefferson City, Parksville, Haletown (Guild), Big Spring, Whitwell, Happy Valley, Spring City, Old Cumberland, Cartwright, Old Washington, Jasper, Turtletown, Knoxville, Strawberry Plains, Oak Ridge, Tasso, Clear Water, Alcoa, High Point, Pikeville, Coker Creek, Grandview, Seymour, Hiawasse Dam, Archville, Violet, Eagle Furnace, Madisonville, Harriman, Gatlinburg, Conasauga, Monteagle, Elkmont, Chestnut Hill, Dayton, Marble, Brayton, Pine Orchard, Maryville, Petros, Lake Forest, Melvine, Clinton, Etowah, Brasstown, Big Frog Mountain, Unaka, Cleveland, Ducktown, Martin Springs, Sweetwater, Bullet Creek, Athens, Topton, South Pittsburg, Loudon, Bearden, Murphy, Dunlap, Harrisburg, Andrews, Palio, Citico, Evensville, Chattanooga, Pigeon Forge, McMahan, Oliver Springs, Benton, Mount Crest, Kodak, Sevierville, Lone Oak, Lenoir City, Dandridge, Kingston, and Hayesville 956 PM EDT Thu Mar 25 2021 /856 PM CDT Thu Mar 25 2021/ ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 AM EDT/7 AM CDT/ FRIDAY... The Flash Flood Watch continues for * Portions of southwest North Carolina, including the following areas, Cherokee and Clay. Portions of east Tennessee, including the following areas, Anderson, Bledsoe, Blount Smoky Mountains, Bradley, East Polk, Hamilton, Jefferson, Knox, Loudon, Marion, McMinn, Meigs, Morgan, North Sevier, Northwest Blount, Northwest Monroe, Rhea, Roane, Sequatchie, Sevier Smoky Mountains, Southeast Monroe and West Polk. * Until 8 AM EDT/7 AM CDT/ Friday. * The ground is already quite wet from earlier rainfall, and another round of showers and thunderstorms will bring heavy downpours overnight. This additional rainfall will exacerbate any ongoing issues and may lead to additional flooding issues tonight. 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. && $$
995 WGUS64 KMRX 260740 AAA FFAMRX Flood Watch...UPDATED National Weather Service Morristown TN 340 AM EDT Fri Mar 26 2021 NCZ060-061-TNZ035-036-067>074-081>087-098>102-260845- /O.CAN.KMRX.FF.A.0002.000000T0000Z-210326T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cherokee-Clay-Morgan-Anderson-Roane-Loudon-Knox-Jefferson- Northwest Blount-Blount Smoky Mountains-North Sevier- Sevier Smoky Mountains-Sequatchie-Bledsoe-Rhea-Meigs-McMinn- Northwest Monroe-Southeast Monroe-Marion-Hamilton-Bradley- West Polk-East Polk- Including the cities of Andrews, Marble, Topton, Hiawasse Dam, Murphy, Unaka, Violet, Shooting Creek, Brasstown, Hayesville, Tusquitee, Pine Orchard, High Point, Petros, Oak Ridge, Clinton, Harriman, Eagle Furnace, Rockwood, Bradbury, Fairview, Kingston, Oliver Springs, Lenoir City, Loudon, Bearden, Knoxville, Lake Forest, Jefferson City, Strawberry Plains, Chestnut Hill, Dandridge, White Pine, Happy Valley, Maryville, Alcoa, Cades Cove, Harrisburg, Kodak, McMahan, Sevierville, Seymour, Pigeon Forge, Elkmont, Gatlinburg, Cagle, Dunlap, Cartwright, Lone Oak, Old Cumberland, Palio, Melvine, Mount Crest, Pikeville, Brayton, Dayton, Evensville, Old Washington, Grandview, Spring City, Big Spring, Athens, Clear Water, Dentville, Etowah, Sweetwater, Madisonville, Bullet Creek, Citico, Coker Creek, South Pittsburg, Haletown (Guild), Jasper, Martin Springs, Whitwell, Powells Crossroads, Monteagle, Chattanooga, Cleveland, Tasso, Conasauga, Archville, Benton, Parksville, Reliance, Big Frog Mountain, Ducktown, and Turtletown 340 AM EDT Fri Mar 26 2021 /240 AM CDT Fri Mar 26 2021/ ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of southwest North Carolina and East Tennessee has been cancelled, as heavy rainfall has ended. However, some rivers in the area remain above flood stage, with river flood warnings in effect. 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. $$
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 24, 9:43 AM EDT | High Wind Warning | MRX | Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more | 42 hr |
Nearby
Flash Flood Watches in Tennessee, 2021Flash Flood Watches in North Carolina, 2021Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.