Alert archive / North Carolina / Flash Flood Watches in 2020
Flash Flood Watch 3, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood watch at Feb 12, 2020, 3:45 AM EST for 6 counties in North Carolina; Habersham County, Rabun County, Georgia. It took effect at Feb 12, 2020, 7:00 PM EST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Feb 12, 2020, 3:45 AM EST (08:45 UTC)
- In effect from
- Feb 12, 2020, 7:00 PM EST
- Expired
- Feb 13, 2020, 1:22 PM EST
- In force
- 18 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Flood severity
- None
Counties Habersham County, GA, Rabun County, GA, Graham County, NC, Haywood County, NC, Jackson County, NC, Macon County, NC, Swain County, NC, Transylvania County, NC
The radar
The Greer radar (KGSP), 106 km from the middle of the area, began a volume at 08:44 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 00:00Z, 8.8 hours before the alert went out and 230 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
- 39 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 814 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 3:53 PM EST | River Flood Advisory | GSP | Henderson, Transylvania | 19 hr |
Nearby
Flash Flood Watches in North Carolina, 2020Flash Flood Watches in Georgia, 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.