Alert archive / Colorado / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 130, NWS Denver/Boulder, CO

September 10, 2006Arapahoe County, Douglas County, Elbert County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Sep 10, 2006, 6:15 PM MDT for Arapahoe County, Douglas County, Elbert County, Colorado. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 10, 2006, 6:15 PM MDT (00:15 UTC)
Expired: Sep 10, 2006, 7:00 PM MDT
In force: 45 min
Issued by: NWS Denver/Boulder, CO
Area: Counties, with a storm outline in the text

Counties Arapahoe County, CO, Douglas County, CO, Elbert County, CO

The radar

The Denver radar (KFTG), 41 km from the middle of the area, began a volume at 00:16 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.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.3 hours before the alert went out and 117 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: 91 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 2028 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 10, 2:10 PM MDT, 4 hours 5 minutes earlier.

Area forecast discussion, Sep 10, 2:10 PM MDT, 4 hours 5 minutes before

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Hazardous weather outlook, Sep 10, 10:40 AM MDT, 7 hours 35 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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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
Sep 11, 2:57 PM MDT	Severe Thunderstorm Warning	BOU	Weld	33 min
Sep 11, 4:34 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	41 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2006 Every severe thunderstorm warning in 2006

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; radar from the NEXRAD Level II archive.