Alert archive / North Carolina / Flash Flood Watches in 2020
Flash Flood Watch 7, NWS Morristown, TN
NWS Morristown, TN issued this flash flood watch at Sep 15, 2020, 3:37 PM EDT for Polk County, Tennessee; Cherokee County, Clay County, North Carolina. It took effect at Sep 16, 2020, 2:00 PM EDT. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Sep 15, 2020, 3:37 PM EDT (19:37 UTC)
- In effect from
- Sep 16, 2020, 2:00 PM EDT
- Expired
- Sep 17, 2020, 2:13 PM EDT
- In force
- 24 hr
- Issued by
- NWS Morristown, TN
- Flood severity
- None
Counties Cherokee County, NC, Clay County, NC, Polk County, TN
The radar
The Knoxville radar (KMRX), 135 km from the middle of the area, began a volume at 19:39 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.6 hours before the alert went out and 196 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
- 128 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 666 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Flash Flood Watches in North Carolina, 2020Flash Flood Watches in Tennessee, 2020Every flash flood watch in 2020
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.