Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 66, NWS Wilmington, OH

June 11, 1999Champaign County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jun 11, 1999, 3:00 AM EDT for Champaign County, Ohio. It was in force for 45 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 11, 1999, 3:00 AM EDT (07:00 UTC)
Expired
Jun 11, 1999, 3:45 AM EDT
In force
45 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Champaign County, OH

What was reported inside it

TimeReportWhereRemark
Jun 11, 3:00 AM EDTThunderstorm Wind 50Urbana, OHA few trees were downed by thunderstorm winds.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 7.0 hours before the alert went out and 288 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, Detroit, MI at 00:00Z on 1999-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 932 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, Detroit, MI at 00:00Z on 1999-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.193958Sfc1 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
932 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
1734 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
-8 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 Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 10, 11:14 PM EDTSevere Thunderstorm WarningILNHamilton46 min
Jun 10, 11:27 PM EDTSevere Thunderstorm WarningILNClermont33 min
Jun 10, 11:32 PM EDTSevere Thunderstorm WarningILNLogan, Union48 min
Jun 10, 11:38 PM EDTSevere Thunderstorm WarningILNWarren47 min
Jun 10, 11:52 PM EDTSevere Thunderstorm WarningILNButler48 min
Jun 11, 12:16 AM EDTSevere Thunderstorm WarningILNHamilton49 min
Jun 11, 12:24 AM EDTSevere Thunderstorm WarningILNWarren46 min
Jun 11, 1:03 AM EDTSevere Thunderstorm WarningILNHamilton32 min
Jun 11, 2:09 AM EDTSevere Thunderstorm WarningILNClark, Miami46 min
Jun 11, 6:01 PM EDTSevere Thunderstorm WarningILNFayette44 min
Jun 11, 6:06 PM EDTSevere Thunderstorm WarningILNClermont49 min
Jun 11, 6:11 PM EDTSevere Thunderstorm WarningILNLogan34 min
Jun 11, 6:24 PM EDTSevere Thunderstorm WarningILNClark, Greene46 min
Jun 11, 6:33 PM EDTSevere Thunderstorm WarningILNMadison47 min
Jun 11, 7:10 PM EDTSevere Thunderstorm WarningILNGreene30 min
Jun 11, 7:18 PM EDTSevere Thunderstorm WarningILNUnion32 min
Jun 11, 1:10 AM EDTSevere Thunderstorm WarningILNDearborn60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.