Alert archive / Tennessee / Flash Flood Warnings in 2021
Flash Flood Warning 2, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Mar 25, 2021, 5:27 PM EDT for 4 counties in 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 outline as issued.
The facts
- Issued
- Mar 25, 2021, 5:27 PM EDT (21:27 UTC)
- Expired
- Mar 25, 2021, 9:44 PM EDT
- In force
- 4 hr
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Bradley County, TN, Hamilton County, TN, Marion County, TN, Sequatchie County, TN
The radar
The Northeast Alabama radar (KHTX), 88 km from the middle of the area, began a volume at 21:28 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, 9.5 hours before the alert went out and 164 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
- 60 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 753 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
199
WGUS54 KMRX 252127
FFWMRX
TNC011-065-115-153-260230-
/O.NEW.KMRX.FF.W.0002.210325T2127Z-210326T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Morristown TN
527 PM EDT Thu Mar 25 2021
The National Weather Service in Morristown has issued a
* Flash Flood Warning for...
Bradley County in east Tennessee...
Hamilton County in east Tennessee...
Marion County in east Tennessee...
Southeastern Sequatchie County in east Tennessee...
* Until 1030 PM EDT /930 PM CDT/.
* At 527 PM EDT /427 PM CDT/, Doppler radar indicated thunderstorms
producing heavy rain across the warned area. Between 1 and 2
inches of rain have fallen. The ground is saturated. Additional
rainfall amounts up to 1 inch are possible in the warned area.
Flash flooding is ongoing or expected to resume shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Chattanooga, Cleveland, Jasper, Soddy-Daisy, Signal Mountain,
South Pittsburg, Walden, Lakesite, Whitwell, Kimball, Ridgeside,
Fairmount, Harrison, South Cleveland, East Cleveland, Wildwood
Lake, Red Bank, Collegedale, Powells Crossroads and Orme.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3516 8586 3537 8516 3532 8497 3529 8495
3530 8491 3526 8475 3520 8470 3499 8478
3499 8586
FLASH FLOOD...RADAR INDICATED
$$
GC1 follow-up statement
868
WGUS74 KMRX 260144
FFSMRX
Flash Flood Statement
National Weather Service Morristown TN
944 PM EDT Thu Mar 25 2021
TNC011-065-115-153-260154-
/O.CAN.KMRX.FF.W.0002.000000T0000Z-210326T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bradley TN-Hamilton TN-Marion TN-Sequatchie TN-
944 PM EDT Thu Mar 25 2021 /844 PM CDT Thu Mar 25 2021/
...FLASH FLOOD WARNING IS CANCELLED FOR BRADLEY, HAMILTON, MARION
AND SOUTHEASTERN SEQUATCHIE COUNTIES...
Flooding has receded through the evening. Please continue to heed
remaining road closures.
A Flash Flood Watch remains in effect until 800 AM EDT Friday/700 AM
CDT Friday for Portions of southwest North Carolina and east
Tennessee.
LAT...LON 3516 8586 3537 8516 3532 8497 3529 8495
3530 8491 3526 8475 3520 8470 3499 8478
3499 8586
$$
GCThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 25, 3:41 AM EDT | Wind Advisory | MRX | Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 25 more | 24 hr |
| Mar 25, 10:22 AM EDT | River Flood Warning | MRX | Bledsoe, Marion, Sequatchie | 4 days |
| Mar 25, 10:53 AM EDT | Severe Thunderstorm Warning | MRX | Hamilton, Marion | 33 min |
| Mar 25, 11:20 AM EDT | Special Weather Statement | MRX | Bradley, Polk | 40 min |
| Mar 25, 1:03 PM EDT | Flash Flood Warning | MRX | Bradley, Hamilton, Marion, Sequatchie | 3 hr |
| Mar 25, 2:28 PM EDT | Areal Flood Advisory | MRX | Polk | 3 hr |
| Mar 25, 2:52 PM EDT | River Flood Warning | MRX | Hamilton | 41 hr |
| Mar 25, 4:06 PM EDT | Areal Flood Advisory | MRX | Bradley, Hamilton, Marion, Sequatchie | 86 min |
| Mar 25, 4:14 PM EDT | Special Weather Statement | MRX | Bledsoe | 31 min |
| Mar 25, 6:17 PM EDT | Areal Flood Advisory | MRX | Knox, Loudon | 3 hr |
| Mar 25, 7:17 PM EDT | River Flood Warning | MRX | Cocke | 32 hr |
| Mar 25, 7:57 PM EDT | Areal Flood Advisory | MRX | Polk | 4 hr |
Nearby
Flash Flood Warnings in Tennessee, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.