Alert archive / Ohio / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 670

September 3, 20024 states

The Storm Prediction Center issued this severe thunderstorm watch at Sep 3, 2002, 3:40 PM EDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Sep 3, 2002, 3:40 PM EDT (19:40 UTC)
Expired
Sep 3, 2002, 9:00 PM EDT
In force
5 hr
Issued by
the Storm Prediction Center
All 64 counties

Dearborn County, IN, Franklin County, IN, Ohio County, IN, Switzerland County, IN, Union County, IN, Wayne County, IN, Boone County, KY, Campbell County, KY, Gallatin County, KY, Kenton County, KY, Ashland County, OH, Belmont County, OH, Brown County, OH, Butler County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Miami County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Portage County, OH, Preble County, OH, Richland County, OH, Ross County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Warren County, OH, Wayne County, OH, Brooke County, WV, Hancock County, WV, Ohio County, WV

The radar

The Cincinnati radar (KILN), 87 km from the middle of the area, began a volume at 19:42 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

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

IssuedProductOfficeCountiesLasted
Sep 3, 3:55 PM EDTSevere Thunderstorm WarningCLESummit50 min
Sep 3, 4:06 PM EDTSevere Thunderstorm WarningCLEMedina39 min
Sep 3, 4:09 PM EDTSevere Thunderstorm WarningCLEPortage51 min
Sep 3, 4:29 PM EDTSevere Thunderstorm WarningCLEStark46 min
Sep 3, 4:52 PM EDTSevere Thunderstorm WarningCLEWayne38 min
Sep 3, 4:55 PM EDTSevere Thunderstorm WarningCLEPortage, Summit50 min
Sep 3, 5:00 PM EDTSevere Thunderstorm WarningCLEMahoning, Trumbull45 min
Sep 3, 5:13 PM EDTSevere Thunderstorm WarningCLEStark47 min
Sep 3, 5:43 PM EDTSevere Thunderstorm WarningCLEMahoning47 min
Sep 3, 5:50 PM EDTSevere Thunderstorm WarningCLEKnox55 min
Sep 3, 6:02 PM EDTSevere Thunderstorm WarningCLEStark58 min
Sep 3, 6:07 PM EDTSevere Thunderstorm WarningILNLicking38 min
Sep 3, 6:10 PM EDTSevere Thunderstorm WarningCLEHolmes65 min
Sep 3, 6:11 PM EDTSevere Thunderstorm WarningPBZColumbiana64 min
Sep 3, 6:40 PM EDTSevere Thunderstorm WarningPBZTuscarawas65 min
Sep 3, 6:44 PM EDTSevere Thunderstorm WarningILNLicking31 min
Sep 3, 7:03 PM EDTSevere Thunderstorm WarningPBZJefferson57 min
Sep 3, 7:10 PM EDTSevere Thunderstorm WarningPBZHarrison65 min
Sep 3, 7:46 PM EDTSevere Thunderstorm WarningPBZBelmont59 min

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.7 hours before the alert went out and 85 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 2002-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 980 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 2002-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
980 J/kg
Mixed-layer CIN
-83 J/kg
Mixed-layer LCL
1168 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Ohio, 2002Severe Thunderstorm Watches in Indiana, 2002Severe Thunderstorm Watches in Kentucky, 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.