Alert archive / North Carolina / Flood Watches in 2018

Flood Watch 2, NWS Greenville-Spartanburg, SC

February 9, 201818 counties in North Carolina; Anderson County, South Carolina; 5 counties in Georgia

NWS Greenville-Spartanburg, SC issued this flood watch at Feb 9, 2018, 3:46 AM EST for 18 counties in North Carolina; Anderson County, South Carolina; 5 counties in Georgia. It took effect at Feb 10, 2018, 7:00 AM EST. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued
Feb 9, 2018, 3:46 AM EST (08:46 UTC)
In effect from
Feb 10, 2018, 7:00 AM EST
Expired
Feb 12, 2018, 7:00 AM EST
In force
48 hr
Issued by
NWS Greenville-Spartanburg, SC
Flood severity
None
All 24 counties

Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Alexander County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Yancey County, NC, Anderson County, SC

The radar

The Greer radar (KGSP), 64 km from the middle of the area, began a volume at 08:43 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 277 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2018-02-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2018-02-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -138 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2288 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
-138 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Flood Watches in North Carolina, 2018Flood Watches in Georgia, 2018Flood Watches in South Carolina, 2018Every flood watch in 2018

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.