Alert archive / Ohio / Tornado Warnings in 2000

Tornado Warning 2, NWS Wilmington, OH

April 20, 2000Clark County, Ohio

NWS Wilmington, OH issued this tornado warning at Apr 20, 2000, 6:38 PM EDT for Clark County, Ohio. It was in force for 42 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
Apr 20, 2000, 6:38 PM EDT (22:38 UTC)
Expired
Apr 20, 2000, 7:20 PM EDT
In force
42 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Clark County, OH

The radar

The Cincinnati radar (KILN), 55 km from the middle of the area, began a volume at 22:42 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.

What was reported inside it

TimeReportWhereRemark
Apr 20, 6:51 PM EDTThunderstorm Wind 50 ESpringfield, OHTrees downed.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 20, 3:15 PM EDTTornado WatchSPC5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.6 hours before the alert went out and 54 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 2000-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2000-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 200 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1769 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
200 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

525 
WFUS51 KILN 202238
TORILN
OHC023-202320-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
638 PM EDT THU APR 20 2000

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* TORNADO WARNING FOR...
  CLARK COUNTY IN WEST CENTRAL OHIO.

* UNTIL 720 PM EDT

* AT 632 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A TORNADO 16 MILES WEST OF SPRINGFIELD OR 8 MILES WEST OF ENON...
  MOVING NORTHEAST AT 50 MPH. SPOTTERS HAVE OBSERVED THIS
  TORNADO ON THE GROUND NEAR FAIRBORN AT 635 PM.

* THE TORNADO IS EXPECTED TO BE NEAR...
  ENON  AT 640 PM EDT.
  NORTH HAMPTON AT 645 PM EDT .
  SPRINGFIELD AT 649 PM EDT .

THIS IS A DANGEROUS STORM. GO TO THE BASEMENT OR A SMALL INTERIOR
ROOM ON THE LOWEST FLOOR

.END/AR

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 3:13 PM EDTSevere Thunderstorm WarningILNWarren47 min
Apr 20, 5:33 PM EDTSevere Thunderstorm WarningILNMercer47 min
Apr 20, 5:39 PM EDTSevere Thunderstorm WarningILNDarke, Preble46 min
Apr 20, 5:55 PM EDTSevere Thunderstorm WarningILNButler65 min
Apr 20, 6:11 PM EDTSevere Thunderstorm WarningILNMiami, Shelby44 min
Apr 20, 6:11 PM EDTSevere Thunderstorm WarningILNMontgomery44 min
Apr 20, 6:18 PM EDTSevere Thunderstorm WarningILNHamilton62 min
Apr 20, 6:24 PM EDTTornado WarningILNMontgomery31 min
Apr 20, 6:42 PM EDTSevere Thunderstorm WarningILNWarren63 min
Apr 20, 6:51 PM EDTSevere Thunderstorm WarningILNChampaign49 min
Apr 20, 6:56 PM EDTSevere Thunderstorm WarningILNHardin34 min
Apr 20, 6:59 PM EDTSevere Thunderstorm WarningILNGreene46 min
Apr 20, 7:10 PM EDTSevere Thunderstorm WarningILNClinton60 min
Apr 20, 7:19 PM EDTSevere Thunderstorm WarningILNClermont46 min
Apr 20, 7:27 PM EDTSevere Thunderstorm WarningILNFayette, Madison63 min
Apr 20, 7:34 PM EDTSevere Thunderstorm WarningILNBrown61 min
Apr 20, 7:45 PM EDTSevere Thunderstorm WarningILNFranklin50 min

Nearby

Tornado Warnings in Ohio, 2000Every tornado warning in 2000Tornadoes in 2000

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; radar from the NEXRAD Level II archive.