Alert archive / Ohio / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 383

June 4, 200217 counties in Ohio

The Storm Prediction Center issued this severe thunderstorm watch at Jun 4, 2002, 7:00 PM EDT for 17 counties in Ohio. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 4, 2002, 7:00 PM EDT (23:00 UTC)
Expired
Jun 5, 2002, 12:00 AM EDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Allen County, OH, Auglaize County, OH, Crawford County, OH, Delaware County, OH, Hancock County, OH, Hardin County, OH, Knox County, OH, Logan County, OH, Marion County, OH, Mercer County, OH, Morrow County, OH, Putnam County, OH, Richland County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Wyandot County, OH

The radar

The Cincinnati radar (KILN), 143 km from the middle of the area, began a volume at 23:01 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.

Warnings issued inside it

3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 4, 7:09 PM EDTSevere Thunderstorm WarningILNMercer51 min
Jun 4, 7:15 PM EDTSevere Thunderstorm WarningIWXAllen55 min
Jun 4, 7:25 PM EDTSevere Thunderstorm WarningCLERichland35 min

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.0 hours before the alert went out and 142 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 2002-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2117 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 2002-06-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
2117 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1056 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.8

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Ohio, 2002Every severe thunderstorm watch in 2002

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.