Alert archive / Nebraska / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 29, NWS North Platte, NE

June 20, 1989Boyd County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 20, 1989, 11:25 PM CDT for Boyd County, Nebraska. It was in force for 35 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 20, 1989, 11:25 PM CDT (04:25 UTC)
Expired
Jun 21, 1989, 12:00 AM CDT
In force
35 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Boyd County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jun 20, 11:40 PM CDTHail 1Boyd, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 4.4 hours before the alert went out and 224 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, Aberdeen, SD at 00:00Z on 1989-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 1989-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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 North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 8:03 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt57 min
Jun 20, 8:24 PM CDTSevere Thunderstorm WarningLBFGarfield, Holt51 min
Jun 20, 8:24 PM CDTSevere Thunderstorm WarningLBFBoyd51 min
Jun 20, 9:14 PM CDTSevere Thunderstorm WarningLBFHolt, Knox31 min
Jun 20, 9:14 PM CDTSevere Thunderstorm WarningLBFGarfield31 min
Jun 21, 12:05 AM CDTSevere Thunderstorm WarningLBFBoyd25 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1989Every severe thunderstorm warning in 1989

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.