Alert archive / Colorado / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 9, NWS Denver/Boulder, CO

May 21, 1993Yuma County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 21, 1993, 6:44 PM MDT for Yuma County, Colorado. It was in force for 16 min.

The area

The counties it named.

The facts

Issued: May 21, 1993, 6:44 PM MDT (00:44 UTC)
Expired: May 21, 1993, 7:00 PM MDT
In force: 16 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

County Yuma County, CO

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 0.7 hours before the alert went out and 70 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: 116 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 1997 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 114 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, May 21, 4:50 PM MDT, 1 hour 54 minutes before

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Special weather statement, May 21, 4:55 PM MDT, 1 hour 49 minutes before

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Special weather statement, May 21, 4:55 PM MDT, 1 hour 49 minutes before

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Special weather statement, May 21, 6:40 PM MDT, 4 minutes before

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Special weather statement, May 21, 6:42 PM MDT, 2 minutes before

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Special weather statement, May 21, 6:44 PM MDT, 0 minutes before

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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 22, 12:43 PM MDT	Severe Thunderstorm Warning	BOU	Douglas	17 min
May 22, 2:35 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Denver, Jefferson	25 min
May 22, 2:35 PM MDT	Severe Thunderstorm Warning	BOU	Boulder	25 min
May 22, 3:30 PM MDT	Severe Thunderstorm Warning	BOU	Washington, Yuma	45 min
May 22, 4:12 PM MDT	Severe Thunderstorm Warning	BOU	Washington, Yuma	48 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1993 Every severe thunderstorm warning in 1993

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.