Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 65, NWS Cheyenne, WY

May 27, 1991Dawes County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 27, 1991, 11:10 PM MDT for Dawes County, Nebraska. It was in force for 35 min.

The area

The counties it named.

The facts

Issued: May 27, 1991, 11:10 PM MDT (05:10 UTC)
Expired: May 27, 1991, 11:45 PM MDT
In force: 35 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

County Dawes County, NE

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 5.2 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: 202 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 2734 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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, May 27, 9:29 PM MDT, 1 hour 41 minutes before

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Special weather statement, May 27, 9:49 PM MDT, 1 hour 21 minutes before

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Special weather statement, May 27, 9:50 PM MDT, 1 hour 20 minutes before

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Special weather statement, May 27, 9:56 PM MDT, 1 hour 14 minutes before

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Special weather statement, May 27, 10:22 PM MDT, 48 minutes before

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Special weather statement, May 27, 10:28 PM MDT, 42 minutes before

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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 27, 6:21 PM MDT	Severe Thunderstorm Warning	CYS	Sioux	54 min
May 27, 7:16 PM MDT	Severe Thunderstorm Warning	CYS	Sioux	19 min
May 27, 7:35 PM MDT	Severe Thunderstorm Warning	CYS	Dawes	55 min
May 27, 8:31 PM MDT	Severe Thunderstorm Warning	CYS	Dawes, Sheridan	29 min
May 27, 8:54 PM MDT	Severe Thunderstorm Warning	CYS	Sheridan	35 min
May 28, 5:33 PM MDT	Severe Thunderstorm Warning	CYS	Banner	27 min
May 27, 8:31 PM MDT	Severe Thunderstorm Warning	CYS	Platte	29 min
May 28, 5:02 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	28 min
May 28, 5:34 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	26 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1991 Every severe thunderstorm warning in 1991

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.