Alert archive / Colorado / Wind Advisories in 2023

Wind Advisory 3, NWS Grand Junction, CO

February 20, 20235 counties in Colorado; Grand County, San Juan County, Utah

NWS Grand Junction, CO issued this wind advisory at Feb 20, 2023, 2:31 PM MST for 5 counties in Colorado; Grand County, San Juan County, Utah. It took effect at Feb 22, 2023, 1:00 AM MST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Feb 20, 2023, 2:31 PM MST (21:31 UTC)
In effect from: Feb 22, 2023, 1:00 AM MST
Expired: Feb 22, 2023, 10:00 PM MST
In force: 21 hr
Issued by: NWS Grand Junction, CO

Counties Delta County, CO, Garfield County, CO, Gunnison County, CO, Mesa County, CO, Montrose County, CO, Grand County, UT, San Juan County, UT

The radar

The Grand Junction radar (KGJX), 40 km from the middle of the area, began a volume at 21:32 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

Grand Junction, CO (KGJT), launched 12:00Z, 9.5 hours before the alert went out and 44 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: 1771 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 86 m²/s²
0-3 km storm-relative helicity: 357 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 wind advisory 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 wind advisory went out at Feb 20, 10:31 AM MST, 4 hours earlier.

Area forecast discussion, Feb 20, 10:31 AM MST, 4 hours before

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Hazardous weather outlook, Feb 20, 4:40 AM MST, 9 hours 51 minutes before

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In the hours before

Local storm report, Feb 20, 11:59 AM MST, 2 hours 32 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
Feb 20, 3:40 PM MST	Winter Storm Warning	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 11 more	4 days
Feb 20, 3:40 PM MST	Winter Weather Advisory	GJT	Archuleta, Delta, Dolores, Eagle, Garfield, Gunnison and 12 more	4 days
Feb 20, 2:23 AM MST	High Wind Watch	GJT	San Juan	12 hr

Nearby

Wind Advisories in Colorado, 2023 Wind Advisories in Utah, 2023 Every wind advisory in 2023

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.