Alert archive / Colorado / Special Weather Statements in 2011

Special Weather Statement, NWS Denver/Boulder, CO

May 28, 2011Elbert County, Colorado

NWS Denver/Boulder, CO issued this special weather statement at May 28, 2011, 11:41 PM MDT for Elbert County, Colorado. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 28, 2011, 11:41 PM MDT (05:41 UTC)
Expired: May 29, 2011, 12:15 AM MDT
In force: 34 min
Issued by: NWS Denver/Boulder, CO

County Elbert County, CO

The radar

The Denver radar (KFTG), 79 km from the middle of the area, began a volume at 05:43 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, 5.7 hours before the alert went out and 103 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1444 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 429 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 28, 3:40 PM MDT, 8 hours 1 minute earlier.

Area forecast discussion, May 28, 3:40 PM MDT, 8 hours 1 minute before

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Hazardous weather outlook, May 28, 11:14 AM MDT, 12 hours 27 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 28, 8:04 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	41 min
May 28, 8:45 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	45 min
May 28, 8:54 PM MDT	Tornado Warning	BOU	Lincoln	51 min
May 28, 10:23 PM MDT	Special Weather Statement	BOU	Elbert	37 min
May 29, 3:35 PM MDT	High Wind Watch	BOU	Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more	14 hr

Nearby

Special Weather Statements in Colorado, 2011 Every special weather statement in 2011

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.