Alert archive / Colorado / Special Weather Statements in 2016

Special Weather Statement, NWS Denver/Boulder, CO

June 13, 2016Douglas County, Colorado

NWS Denver/Boulder, CO issued this special weather statement at Jun 13, 2016, 2:40 PM MDT for Douglas County, Colorado. It was in force for 35 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: Jun 13, 2016, 2:40 PM MDT (20:40 UTC)
Expired: Jun 13, 2016, 3:15 PM MDT
In force: 35 min
Issued by: NWS Denver/Boulder, CO

County Douglas County, CO

The radar

The Denver radar (KFTG), 68 km from the middle of the area, began a volume at 20:41 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 (KDEN), launched 12:00Z, 8.7 hours before the alert went out and 152 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: 223 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 820 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: -33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jun 13, 11:59 AM MDT, 2 hours 41 minutes earlier.

Area forecast discussion, Jun 13, 11:59 AM MDT, 2 hours 41 minutes before

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Hazardous weather outlook, Jun 13, 10:16 AM MDT, 4 hours 24 minutes before

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In the hours before

Special weather statement, Jun 13, 12:11 PM MDT, 2 hours 29 minutes before

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Special weather statement, Jun 13, 12:32 PM MDT, 2 hours 8 minutes before

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Special weather statement, Jun 13, 2:40 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
Jun 12, 6:01 PM MDT	Special Weather Statement	BOU	Lincoln	29 min
Jun 12, 6:04 PM MDT	Areal Flood Advisory	BOU	Weld	116 min
Jun 12, 6:15 PM MDT	Special Weather Statement	BOU	Denver	30 min
Jun 12, 6:35 PM MDT	Areal Flood Advisory	BOU	Lincoln	115 min
Jun 12, 6:49 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	26 min
Jun 12, 6:56 PM MDT	Severe Thunderstorm Warning	BOU	Adams	22 min
Jun 12, 7:10 PM MDT	Severe Thunderstorm Warning	BOU	Adams	21 min
Jun 12, 7:16 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	29 min
Jun 12, 7:45 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	30 min
Jun 12, 8:13 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	32 min
Jun 13, 10:44 AM MDT	Severe Thunderstorm Warning	BOU	Douglas, Jefferson	21 min
Jun 13, 12:11 PM MDT	Special Weather Statement	BOU	Adams, Arapahoe	34 min
Jun 13, 12:32 PM MDT	Special Weather Statement	BOU	Adams	28 min
Jun 13, 3:33 PM MDT	Special Weather Statement	BOU	Broomfield, Denver, Jefferson	42 min
Jun 13, 3:46 PM MDT	Special Weather Statement	BOU	Denver	44 min
Jun 13, 3:53 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	37 min
Jun 13, 4:11 PM MDT	Special Weather Statement	BOU	Denver	34 min
Jun 13, 4:22 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	38 min
Jun 13, 4:38 PM MDT	Severe Thunderstorm Warning	BOU	Douglas	52 min
Jun 13, 4:42 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Weld	30 min
Jun 13, 4:45 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	32 min
Jun 13, 4:48 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Arapahoe	27 min
Jun 13, 5:06 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Elbert	39 min
Jun 13, 5:10 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Weld	38 min
Jun 13, 5:26 PM MDT	Tornado Warning	BOU	Adams, Morgan	34 min
Jun 13, 5:29 PM MDT	Areal Flood Advisory	BOU	Douglas	5 hr

Nearby

Special Weather Statements in Colorado, 2016 Every special weather statement in 2016

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.