Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 166, NWS Hastings, NE

June 17, 1998Sherman County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jun 17, 1998, 7:43 PM CDT for Sherman County, Nebraska. It was in force for 47 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, 7:43 PM CDT (00:43 UTC)
Expired
Jun 17, 1998, 8:30 PM CDT
In force
47 min
Issued by
NWS Hastings, NE
Area
Whole counties

County Sherman County, NE

The radar

The Grand Island radar (KUEX), 110 km from the middle of the area, began a volume at 00:42 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
Jun 17, 8:00 PM CDTHail 1Ashton, NE

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, 0.7 hours before the alert went out and 218 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 Hastings, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 17, 7:03 PM CDTSevere Thunderstorm WarningGIDBuffalo47 min
Jun 17, 7:17 PM CDTSevere Thunderstorm WarningGIDHarlan48 min
Jun 17, 7:25 PM CDTSevere Thunderstorm WarningGIDHoward45 min
Jun 17, 7:35 PM CDTSevere Thunderstorm WarningGIDGreeley50 min
Jun 17, 7:39 PM CDTSevere Thunderstorm WarningGIDPhelps51 min
Jun 17, 7:51 PM CDTSevere Thunderstorm WarningGIDBuffalo34 min
Jun 17, 8:06 PM CDTSevere Thunderstorm WarningGIDDawson49 min
Jun 17, 8:13 PM CDTSevere Thunderstorm WarningGIDHoward47 min
Jun 17, 8:28 PM CDTSevere Thunderstorm WarningGIDGosper47 min
Jun 17, 8:32 PM CDTSevere Thunderstorm WarningGIDGreeley, Sherman63 min
Jun 17, 8:51 PM CDTSevere Thunderstorm WarningGIDDawson64 min
Jun 17, 8:59 PM CDTSevere Thunderstorm WarningGIDValley61 min
Jun 17, 9:54 PM CDTSevere Thunderstorm WarningGIDSherman51 min
Jun 17, 10:07 PM CDTSevere Thunderstorm WarningGIDValley33 min
Jun 17, 10:13 PM CDTSevere Thunderstorm WarningGIDBuffalo32 min
Jun 17, 11:02 PM CDTSevere Thunderstorm WarningGIDHoward48 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; radar from the NEXRAD Level II archive.