Alert archive / Colorado / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 88, NWS Denver/Boulder, CO

June 21, 1996Arapahoe County, Washington County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 21, 1996, 3:29 PM MDT for Arapahoe County, Washington County, Colorado. It was in force for 31 min. 2 reports 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 21, 1996, 3:29 PM MDT (21:29 UTC)
Expired: Jun 21, 1996, 4:00 PM MDT
In force: 31 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

Counties Arapahoe County, CO, Washington County, CO

What was reported inside it

Time	Report	Where	Remark
Jun 21, 3:38 PM MDT	Thunderstorm Wind 52	Deer Trail, CO
Jun 21, 3:51 PM MDT	Thunderstorm Wind 52	Last Chance, CO

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

Denver, CO (KDNR), launched 12:00Z, 9.5 hours before the alert went out and 47 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: 4 J/kg
Mixed-layer CIN: -434 J/kg
Mixed-layer LCL: 2487 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: -38 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, Jun 21, 11:12 AM MDT, 4 hours 17 minutes before

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Special weather statement, Jun 21, 12:35 PM MDT, 2 hours 54 minutes before

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Special weather statement, Jun 21, 1:07 PM MDT, 2 hours 22 minutes before

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Special weather statement, Jun 21, 1:23 PM MDT, 2 hours 6 minutes before

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Special weather statement, Jun 21, 2:59 PM MDT, 30 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
Jun 20, 6:23 PM MDT	Severe Thunderstorm Warning	BOU	Morgan	37 min
Jun 20, 7:01 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Morgan, Weld	29 min
Jun 20, 7:30 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Weld	30 min
Jun 20, 8:18 PM MDT	Severe Thunderstorm Warning	BOU	Morgan	27 min
Jun 20, 8:45 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	30 min
Jun 20, 8:59 PM MDT	Tornado Warning	BOU	Morgan	31 min
Jun 20, 9:09 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Weld	21 min
Jun 20, 9:25 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	35 min
Jun 20, 9:30 PM MDT	Tornado Warning	BOU	Logan, Washington	30 min

Nearby

Severe Thunderstorm Warnings in Colorado, 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.