Alert archive / Kansas / Tornado Watches in 1998

Tornado Watch 626

June 20, 19984 states

The Storm Prediction Center issued this tornado watch at Jun 20, 1998, 3:15 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 20, 1998, 3:15 PM CDT (20:15 UTC)
Expired
Jun 20, 1998, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 48 counties

Fremont County, IA, Mills County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Clay County, KS, Coffey County, KS, Cowley County, KS, Dickinson County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Labette County, KS, Lyon County, KS, Marshall County, KS, Montgomery County, KS, Morris County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS, Wilson County, KS, Woodson County, KS, Atchison County, MO, Cass County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Seward County, NE

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 20, 3:17 PM CDTSevere Thunderstorm WarningOAXLancaster48 min
Jun 20, 3:31 PM CDTTornado WarningOAXGage49 min
Jun 20, 3:54 PM CDTSevere Thunderstorm WarningOAXOtoe46 min
Jun 20, 4:05 PM CDTSevere Thunderstorm WarningOAXLancaster35 min
Jun 20, 4:18 PM CDTTornado WarningOAXGage, Pawnee32 min
Jun 20, 4:27 PM CDTSevere Thunderstorm WarningOAXJohnson48 min
Jun 20, 4:50 PM CDTTornado WarningOAXPawnee35 min
Jun 20, 4:55 PM CDTTornado WarningTOPMarshall, Nemaha45 min
Jun 20, 4:58 PM CDTSevere Thunderstorm WarningOAXNemaha, Otoe52 min
Jun 20, 5:24 PM CDTTornado WarningOAXPawnee31 min
Jun 20, 5:37 PM CDTTornado WarningTOPMarshall, Nemaha, Pottawatomie33 min
Jun 20, 5:40 PM CDTTornado WarningTOPMarshall, Nemaha, Pottawatomie30 min
Jun 20, 6:05 PM CDTTornado WarningTOPMarshall, Nemaha, Pottawatomie35 min
Jun 20, 6:07 PM CDTSevere Thunderstorm WarningTOPBrown, Nemaha48 min
Jun 20, 6:34 PM CDTTornado WarningTOPJackson31 min
Jun 20, 6:57 PM CDTTornado WarningTOPJackson28 min
Jun 20, 7:10 PM CDTSevere Thunderstorm WarningEAXAtchison50 min
Jun 20, 7:17 PM CDTSevere Thunderstorm WarningTOPJackson, Jefferson48 min
Jun 20, 7:46 PM CDTSevere Thunderstorm WarningICTCowley59 min
Jun 20, 8:03 PM CDTSevere Thunderstorm WarningTOPJefferson32 min
Jun 20, 8:24 PM CDTSevere Thunderstorm WarningTOPDouglas31 min
Jun 20, 8:38 PM CDTSevere Thunderstorm WarningTOPJefferson32 min
Jun 20, 8:47 PM CDTSevere Thunderstorm WarningICTCowley43 min
Jun 20, 8:49 PM CDTSevere Thunderstorm WarningICTButler46 min
Jun 20, 8:56 PM CDTSevere Thunderstorm WarningTOPCoffey29 min

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.3 hours before the alert went out and 68 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, Topeka, KS at 12:00Z on 1998-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2555 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, Topeka, KS at 12:00Z on 1998-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 179 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
2555 J/kg
Mixed-layer CIN
-270 J/kg
Mixed-layer LCL
997 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
179 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 1:45 PM CDTTornado WatchSPCAdair, Allamakee, Audubon, Benton, Black Hawk, Boone and 45 more5 hr
Jun 19, 10:00 PM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Doniphan, Douglas, Geary, Jackson and 11 more6 hr
Jun 19, 10:30 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Bourbon, Cherokee, Coffey, Crawford and 7 more6 hr
Jun 20, 12:00 AM CDTSevere Thunderstorm WatchSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Iron and 12 more5 hr

Nearby

Tornado Watches in Kansas, 1998Tornado Watches in Nebraska, 1998Tornado Watches in Iowa, 1998Every tornado watch in 1998

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.