Alert archive / Indiana / Tornado Warnings in 2000

Tornado Warning 2, NWS Northern Indiana

April 20, 2000White County, Indiana

NWS Northern Indiana issued this tornado warning at Apr 20, 2000, 11:08 AM EST for White County, Indiana. It was in force for 42 min. 4 reports 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, 11:08 AM EST (16:08 UTC)
Expired
Apr 20, 2000, 11:50 AM EST
In force
42 min
Issued by
NWS Northern Indiana
Area
Whole counties

County White County, IN

The radar

The Northern Indiana radar (KIWX), 119 km from the middle of the area, began a volume at 16:11 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, 11:15 AM ESTHail 1.75Brookston, IN
Apr 20, 11:15 AM ESTHail 0.75Reynolds, IN
Apr 20, 11:22 AM ESTHail 0.75Brookston, IN
Apr 20, 11:22 AM ESTHail 1Brookston, IN

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, 10:00 AM ESTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 4.1 hours before the alert went out and 161 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, Lincoln, IL at 12:00Z on 2000-04-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 595 joules per kilogram.LCLLFCEL10008507005003002001001 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, Lincoln, IL at 12:00Z on 2000-04-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 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
595 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
873 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
147 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.4

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 Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 20, 3:58 AM ESTSevere Thunderstorm WarningIWXPulaski32 min
Apr 20, 4:54 AM ESTSevere Thunderstorm WarningIWXMarshall46 min
Apr 20, 5:21 AM ESTSevere Thunderstorm WarningIWXElkhart, Kosciusko29 min
Apr 20, 10:53 AM ESTTornado WarningIWXPulaski, White57 min
Apr 20, 11:20 AM ESTTornado WarningIWXCass, Fulton60 min
Apr 20, 11:32 AM ESTTornado WarningIWXLaPorte, Starke48 min
Apr 20, 11:48 AM ESTSevere Thunderstorm WarningIWXElkhart, Saint Joseph42 min
Apr 20, 11:51 AM ESTSevere Thunderstorm WarningIWXMarshall49 min
Apr 20, 11:56 AM ESTTornado WarningIWXKosciusko44 min
Apr 20, 12:02 PM ESTTornado WarningIWXMiami48 min
Apr 20, 12:37 PM ESTTornado WarningIWXKosciusko33 min
Apr 20, 12:44 PM ESTSevere Thunderstorm WarningIWXNoble, Whitley46 min
Apr 20, 1:02 PM ESTSevere Thunderstorm WarningIWXLaGrange48 min
Apr 20, 1:06 PM ESTSevere Thunderstorm WarningIWXDeKalb, Steuben54 min

Nearby

Tornado Warnings in Indiana, 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.