Alert archive / South Carolina / Flash Flood Warnings in 1990

Flash Flood Warning 60, NWS Greenville-Spartanburg, SC

October 22, 1990Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Oct 22, 1990, 11:15 PM EDT for Union County, South Carolina. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Oct 22, 1990, 11:15 PM EDT (03:15 UTC)
Expired
Oct 23, 1990, 2:15 AM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Union County, SC

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 3.3 hours before the alert went out and 220 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, Greensboro/Hi Pt, NC at 00:00Z on 1990-10-23Temperature 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, Greensboro/Hi Pt, NC at 00:00Z on 1990-10-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 square meters per square second.1939587897Sfc1 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
NaN m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
233 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 22, 8:31 PM EDTFlash Flood WarningGSPMecklenburg4 hr
Oct 22, 10:00 PM EDTFlash Flood WarningGSPUnion4 hr
Oct 22, 10:09 PM EDTFlash Flood WarningGSPGreenwood, Laurens4 hr
Oct 23, 2:16 AM EDTFlash Flood WarningGSPGreenwood, Laurens, Union6 hr
Oct 23, 2:16 AM EDTFlash Flood WarningGSPCherokee6 hr

Nearby

Flash Flood Warnings in South Carolina, 1990Every flash flood warning in 1990

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.