Alert archive / Wyoming / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 178, NWS Cheyenne, WY

August 14, 1996Laramie County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 14, 1996, 4:43 PM MDT for Laramie County, Wyoming. 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: Aug 14, 1996, 4:43 PM MDT (22:43 UTC)
Expired: Aug 14, 1996, 5:30 PM MDT
In force: 47 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

County Laramie County, WY

The radar

The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 22:46 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

Time	Report	Where	Remark
Aug 14, 5:00 PM MDT	Hail 1.75	Cheyenne, WY

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 nearest sounding before it

Fort Carson/Butt, CO (KFCS), launched 12:00Z, 10.7 hours before the alert went out and 292 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: 989 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 2471 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, Aug 14, 11:00 AM MDT, 5 hours 43 minutes before

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Special weather statement, Aug 14, 3:35 PM MDT, 1 hour 8 minutes before

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Special weather statement, Aug 14, 4:11 PM MDT, 32 minutes before

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Special weather statement, Aug 14, 4:25 PM MDT, 18 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
Aug 13, 7:39 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	51 min
Aug 14, 2:35 PM MDT	Severe Thunderstorm Warning	CYS	Albany	25 min
Aug 14, 4:38 PM MDT	Severe Thunderstorm Warning	CYS	Converse	37 min
Aug 14, 5:14 PM MDT	Severe Thunderstorm Warning	CYS	Converse	46 min
Aug 14, 5:29 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	46 min
Aug 14, 5:52 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	53 min
Aug 14, 5:59 PM MDT	Severe Thunderstorm Warning	CYS	Converse	46 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 1996 Every severe thunderstorm warning in 1996

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.