Alert archive / Oklahoma / Wind Advisories in 2020

Wind Advisory 11, NWS Norman, OK

October 11, 202027 counties in Oklahoma

NWS Norman, OK issued this wind advisory at Oct 11, 2020, 1:29 PM CDT for 27 counties in Oklahoma. It took effect at Oct 11, 2020, 9:04 PM CDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Oct 11, 2020, 1:29 PM CDT (18:29 UTC)
In effect from: Oct 11, 2020, 9:04 PM CDT
Expired: Oct 12, 2020, 4:29 AM CDT
In force: 7 hr
Issued by: NWS Norman, OK

All 27 counties

Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 99 km from the middle of the area, began a volume at 18:28 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

Norman, OK (KOUN), launched 12:00Z, 6.5 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: 101 J/kg
Mixed-layer CIN: -430 J/kg
Mixed-layer LCL: 1331 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 186 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 Norman, OK wrote its last area forecast discussion before this wind advisory went out at Oct 11, 1:25 PM CDT, 4 minutes earlier.

Area forecast discussion, Oct 11, 1:25 PM CDT, 4 minutes before

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Hazardous weather outlook, Oct 11, 11:45 AM CDT, 1 hour 44 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 11, 2:51 AM CDT	Red Flag Warning	OUN	Beckham, Ellis, Greer, Harmon, Harper, Roger Mills and 1 more	17 hr

Nearby

Wind Advisories in Oklahoma, 2020 Every wind advisory in 2020

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.