Alert archive / South Carolina / Flash Flood Warnings in 1990
Flash Flood Warning 13, NWS Columbia, SC
NWS Columbia, SC issued this flash flood warning at Oct 22, 1990, 6:41 PM EDT for Chester County, York County, South Carolina. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Oct 22, 1990, 6:41 PM EDT (22:41 UTC)
- Expired
- Oct 22, 1990, 10:45 PM EDT
- In force
- 4 hr
- Issued by
- NWS Columbia, SC
- Area
- Whole counties
Counties Chester County, SC, York 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 12:00Z, 10.7 hours before the alert went out and 180 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 983 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Oct 22, 2:24 PM EDT, 4 hours 17 minutes before
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</html>Special weather statement, Oct 22, 2:29 PM EDT, 4 hours 12 minutes before
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</html>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.