Alert archive / Nebraska / Severe Thunderstorm Watches in 1998

Severe Thunderstorm Watch 376

May 19, 199847 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at May 19, 1998, 10:00 PM CDT for 47 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 19, 1998, 10:00 PM CDT (03:00 UTC)
Expired
May 20, 1998, 4:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 47 counties

Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Brown County, NE, Buffalo County, NE, Butler County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dawson County, NE, Fillmore County, NE, Frontier County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Hayes County, NE, Hooker County, NE, Howard County, NE, Jefferson County, NE, Kearney County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Saline County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thomas County, NE, Valley County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The North Platte radar (KLNX), 103 km from the middle of the area, began a volume at 03:00 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

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

IssuedProductOfficeCountiesLasted
May 19, 10:17 PM CDTSevere Thunderstorm WarningLBFBlaine, Custer63 min
May 19, 10:20 PM CDTSevere Thunderstorm WarningLBFThomas35 min
May 19, 10:25 PM CDTTornado WarningGIDHoward50 min
May 19, 10:58 PM CDTSevere Thunderstorm WarningGIDDawson47 min
May 19, 11:07 PM CDTSevere Thunderstorm WarningLBFWheeler63 min
May 19, 11:10 PM CDTSevere Thunderstorm WarningLBFCuster65 min
May 19, 11:14 PM CDTTornado WarningGIDHoward46 min
May 19, 11:24 PM CDTSevere Thunderstorm WarningGIDSherman, Valley61 min
May 19, 11:24 PM CDTSevere Thunderstorm WarningGIDBuffalo61 min
May 19, 11:38 PM CDTSevere Thunderstorm WarningOAXAntelope62 min
May 19, 11:43 PM CDTSevere Thunderstorm WarningGIDGreeley47 min
May 19, 11:55 PM CDTSevere Thunderstorm WarningGIDHoward50 min
May 20, 12:14 AM CDTSevere Thunderstorm WarningGIDHall46 min
May 20, 12:14 AM CDTSevere Thunderstorm WarningOAXBoone61 min
May 20, 12:28 AM CDTSevere Thunderstorm WarningGIDMerrick, Nance47 min
May 20, 12:37 AM CDTSevere Thunderstorm WarningGIDAdams53 min
May 20, 12:38 AM CDTSevere Thunderstorm WarningOAXMadison, Platte62 min
May 20, 12:52 AM CDTSevere Thunderstorm WarningGIDHamilton53 min
May 20, 1:01 AM CDTSevere Thunderstorm WarningGIDClay49 min
May 20, 1:02 AM CDTSevere Thunderstorm WarningGIDHall43 min
May 20, 1:14 AM CDTSevere Thunderstorm WarningGIDPolk, York46 min
May 20, 1:30 AM CDTSevere Thunderstorm WarningOAXButler, Colfax60 min
May 20, 1:38 AM CDTSevere Thunderstorm WarningOAXPlatte32 min
May 20, 1:47 AM CDTSevere Thunderstorm WarningOAXSeward63 min
May 20, 2:00 AM CDTSevere Thunderstorm WarningOAXLancaster, Saline60 min

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.0 hours before the alert went out and 108 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, N. Platte/Lee Bi, NE at 00:00Z on 1998-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1851 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, N. Platte/Lee Bi, NE at 00:00Z on 1998-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
1851 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1719 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.4
Supercell composite
8.7

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
May 19, 7:00 PM CDTTornado WatchSPCArthur, Blaine, Brown, Cherry, Custer, Grant and 9 more5 hr
May 20, 1:45 AM CDTSevere Thunderstorm WatchSPCBurt, Cass, Cuming, Dodge, Douglas, Gage and 10 more6 hr
May 20, 2:30 PM CDTTornado WatchSPCArthur, Banner, Box Butte, Cheyenne, Dawes, Deuel and 6 more6 hr
May 20, 5:30 PM CDTTornado WatchSPCBlaine, Brown, Cherry, Grant, Hooker, Logan and 4 more7 hr

Nearby

Severe Thunderstorm Watches in Nebraska, 1998Every severe thunderstorm 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; radar from the NEXRAD Level II archive.