Alert archive / Colorado / Red Flag Warnings in 2016

Red Flag Warning 14, NWS Grand Junction, CO

July 11, 2016Moffat County, Rio Blanco County, Colorado

NWS Grand Junction, CO issued this red flag warning at Jul 11, 2016, 1:55 PM MDT for Moffat County, Rio Blanco County, Colorado. It took effect at Jul 12, 2016, 12:00 PM MDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 11, 2016, 1:55 PM MDT (19:55 UTC)
In effect from: Jul 12, 2016, 12:00 PM MDT
Expired: Jul 12, 2016, 9:00 PM MDT
In force: 9 hr
Issued by: NWS Grand Junction, CO

Counties Moffat County, CO, Rio Blanco County, CO

The radar

The Grand Junction radar (KGJX), 138 km from the middle of the area, began a volume at 19:59 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

Riverton, WY (KRIW), launched 12:00Z, 7.9 hours before the alert went out and 309 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: 2558 m above ground
0-6 km bulk shear: 85 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: -48 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 red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Junction, CO wrote its last area forecast discussion before this red flag warning went out at Jul 11, 11:55 AM MDT, 2 hours earlier.

Area forecast discussion, Jul 11, 11:55 AM MDT, 2 hours before

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Hazardous weather outlook, Jul 11, 5:27 AM MDT, 8 hours 28 minutes before

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In the hours before

Local storm report, Jul 11, 11:24 AM MDT, 2 hours 31 minutes before

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The office that day

Everything else NWS Grand Junction, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 7:53 PM MDT	Red Flag Warning	GJT	Dolores, La Plata, Montezuma, San Miguel	24 hr

Nearby

Red Flag Warnings in Colorado, 2016 Every red flag warning 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.