Alert archive / North Carolina / Flash Flood Watches in 2020
Flash Flood Watch 9, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood watch at Jun 11, 2020, 11:50 AM EDT for Union County, North Carolina. It took effect at Jun 11, 2020, 1:00 PM EDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Jun 11, 2020, 11:50 AM EDT (15:50 UTC)
- In effect from
- Jun 11, 2020, 1:00 PM EDT
- Expired
- Jun 12, 2020, 3:27 AM EDT
- In force
- 14 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Flood severity
- None
County Union County, NC
The radar
The Columbia radar (KCAE), 128 km from the middle of the area, began a volume at 15:52 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 3.8 hours before the alert went out and 134 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
- 326 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 677 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 10:15 PM EDT | Special Weather Statement | GSP | Polk, Rutherford | 45 min |
| Jun 11, 3:54 PM EDT | Special Weather Statement | GSP | Rowan | 36 min |
| Jun 11, 5:08 PM EDT | Special Weather Statement | GSP | Rowan | 22 min |
| Jun 11, 5:23 PM EDT | Special Weather Statement | GSP | Rowan | 37 min |
| Jun 10, 8:28 PM EDT | Special Weather Statement | GSP | Laurens | 47 min |
| Jun 10, 9:02 PM EDT | Special Weather Statement | GSP | Greenville, Spartanburg | 43 min |
| Jun 10, 9:32 PM EDT | Special Weather Statement | GSP | Union | 28 min |
| Jun 10, 10:00 PM EDT | Special Weather Statement | GSP | Chester | 45 min |
Nearby
Flash Flood Watches in North Carolina, 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.