Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 72, NWS Cheyenne, WY

July 9, 1990Dawes County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 9, 1990, 11:02 PM MDT for Dawes County, Nebraska. It was in force for 28 min.

The area

The counties it named.

The facts

Issued: Jul 9, 1990, 11:02 PM MDT (05:02 UTC)
Expired: Jul 9, 1990, 11:30 PM MDT
In force: 28 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

County Dawes County, NE

The radar

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

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 5.0 hours before the alert went out and 317 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2289 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 1419 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.8

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 9, 6:09 PM MDT, 4 hours 53 minutes before

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Special weather statement, Jul 9, 6:59 PM MDT, 4 hours 3 minutes before

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Special weather statement, Jul 9, 9:55 PM MDT, 1 hour 7 minutes before

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Special weather statement, Jul 9, 10:06 PM MDT, 56 minutes before

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Nearby

Severe Thunderstorm Warnings in Nebraska, 1990 Every severe thunderstorm warning in 1990

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.