Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 19, NWS Charleston, WV

April 23, 1999Athens County, Morgan County, Ohio

NWS Charleston, WV issued this severe thunderstorm warning at Apr 23, 1999, 1:30 PM EDT for Athens County, Morgan County, Ohio. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 23, 1999, 1:30 PM EDT (17:30 UTC)
Expired
Apr 23, 1999, 2:20 PM EDT
In force
50 min
Issued by
NWS Charleston, WV
Area
Whole counties

Counties Athens County, OH, Morgan County, OH

The radar

The Charleston,WV radar (KRLX), 131 km from the middle of the area, began a volume at 17:32 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 5.5 hours before the alert went out and 159 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, Cncnati-Daytn, OH at 12:00Z on 1999-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 382 joules per kilogram.LCLLFCEL10008507005003002001001 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, Cncnati-Daytn, OH at 12:00Z on 1999-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 320 square meters per square second.1939587897117Sfc1 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
382 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
993 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
320 m²/s²
0-3 km storm-relative helicity
342 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.6

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 Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 1:18 PM EDTSevere Thunderstorm WarningRLXTyler47 min
Apr 23, 1:46 PM EDTSevere Thunderstorm WarningRLXDoddridge49 min
Apr 23, 2:03 PM EDTSevere Thunderstorm WarningRLXHarrison47 min
Apr 23, 2:19 PM EDTTornado WarningRLXMingo51 min
Apr 23, 2:23 PM EDTSevere Thunderstorm WarningRLXBarbour47 min
Apr 23, 2:52 PM EDTTornado WarningRLXWyoming48 min
Apr 23, 2:56 PM EDTSevere Thunderstorm WarningRLXRandolph34 min
Apr 23, 3:05 PM EDTSevere Thunderstorm WarningRLXMcDowell50 min
Apr 23, 3:32 PM EDTSevere Thunderstorm WarningRLXUpshur33 min
Apr 23, 3:41 PM EDTSevere Thunderstorm WarningRLXRandolph34 min
Apr 23, 4:16 PM EDTSevere Thunderstorm WarningRLXPocahontas34 min
Apr 23, 5:37 PM EDTSevere Thunderstorm WarningRLXBarbour38 min
Apr 23, 6:34 PM EDTSevere Thunderstorm WarningRLXFayette31 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1999Every severe thunderstorm warning in 1999

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.