Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 175, NWS Omaha, NE

June 17, 1998Boone County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 17, 1998, 9:04 PM CDT for Boone County, Nebraska. It was in force for 61 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
Jun 17, 1998, 9:04 PM CDT (02:04 UTC)
Expired
Jun 17, 1998, 10:05 PM CDT
In force
61 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Boone County, NE

What was reported inside it

TimeReportWhereRemark
Jun 17, 10:00 PM CDTHail 0.88Petersburg, NEHail caused some crop damage in combination with strong winds.

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
Jun 17, 6:15 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.1 hours before the alert went out and 148 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, Omaha, NE at 00:00Z on 1998-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3449 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, Omaha, NE at 00:00Z on 1998-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
3449 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
1514 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.3
Supercell composite
11.9

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 Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 17, 7:59 PM CDTSevere Thunderstorm WarningOAXAntelope, Boone61 min
Jun 17, 8:30 PM CDTTornado WarningOAXBoone35 min
Jun 17, 8:45 PM CDTTornado WarningOAXAntelope35 min
Jun 17, 9:04 PM CDTSevere Thunderstorm WarningOAXBoone66 min
Jun 17, 9:23 PM CDTSevere Thunderstorm WarningOAXAntelope32 min
Jun 17, 10:19 PM CDTFlash Flood WarningOAXBoone3 hr
Jun 17, 10:33 PM CDTFlash Flood WarningOAXBoone, Madison, Platte6 hr
Jun 17, 10:46 PM CDTSevere Thunderstorm WarningOAXMadison64 min
Jun 17, 10:52 PM CDTTornado WarningOAXMadison58 min
Jun 18, 2:19 AM CDTSevere Thunderstorm WarningOAXHarrison, Shelby46 min
Jun 18, 2:35 AM CDTSevere Thunderstorm WarningOAXPottawattamie, Shelby45 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.