Alert archive / North Carolina / Flash Flood Warnings in 2021
Flash Flood Warning 23, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at Mar 28, 2021, 8:47 AM EDT for Cherokee County, Clay County, North Carolina. It was in force for 4 hr. 1 report 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, 8:47 AM EDT (12:47 UTC)
- Expired
- Mar 28, 2021, 1:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cherokee County, NC, Clay County, NC
The radar
The Knoxville radar (KMRX), 119 km from the middle of the area, began a volume at 12:50 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, 11:03 AM EDT | FLASH FLOOD | 3 Ne Hot House, NC | REPORT FROM MPING: RIVER/CREEK OVERFLOWING; CROPLAND/YARD/BASEMENT FLOODING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.8 hours before the alert went out and 208 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
- 14 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 269 m²/s²
- 0-3 km storm-relative helicity
- 293 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
472
WGUS54 KMRX 281247
FFWMRX
NCC039-043-281715-
/O.NEW.KMRX.FF.W.0023.210328T1247Z-210328T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Morristown TN
847 AM EDT Sun Mar 28 2021
The National Weather Service in Morristown has issued a
* Flash Flood Warning for...
Cherokee County in southwestern North Carolina...
Clay County in southwestern North Carolina...
* Until 115 PM EDT.
* At 847 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin 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...
Andrews, Murphy, Hayesville, Marble, Brasstown, Tusquitee, Unaka,
Hiawasse Dam, Culberson, Violet, Hot House, Topton and Shooting
Creek.
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 3499 8432 3523 8429 3527 8423 3524 8419
3524 8413 3529 8403 3523 8400 3522 8396
3526 8384 3524 8376 3526 8371 3523 8369
3520 8373 3520 8372 3516 8374 3516 8366
3514 8365 3513 8362 3500 8352 3499 8348
FLASH FLOOD...RADAR INDICATED
$$
GC1 follow-up statement
797
WGUS74 KMRX 281713 RRA
FFSMRX
Flash Flood Statement
National Weather Service Morristown TN
113 PM EDT Sun Mar 28 2021
NCC039-043-281723-
/O.EXP.KMRX.FF.W.0023.000000T0000Z-210328T1715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cherokee NC-Clay NC-
113 PM EDT Sun Mar 28 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 115 PM EDT THIS AFTERNOON FOR
CHEROKEE AND CLAY COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 3499 8432 3523 8429 3527 8423 3524 8419
3524 8413 3529 8403 3523 8400 3522 8396
3526 8384 3524 8376 3526 8371 3523 8369
3520 8373 3520 8372 3516 8374 3516 8366
3514 8365 3513 8362 3500 8352 3499 8348
$$
GCThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 7:57 AM EDT | Special Weather Statement | MRX | Cherokee, Clay | 48 min |
Nearby
Flash Flood Warnings in North Carolina, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.