Alert archive / Oklahoma / Red Flag Warnings in 2022

Red Flag Warning 15, NWS Norman, OK

April 6, 202232 counties in Oklahoma; 8 counties in Texas

NWS Norman, OK issued this red flag warning at Apr 6, 2022, 3:37 PM CDT for 32 counties in Oklahoma; 8 counties in Texas. It took effect at Apr 7, 2022, 10:00 AM CDT. It was in force for 10 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: Apr 6, 2022, 3:37 PM CDT (20:37 UTC)
In effect from: Apr 7, 2022, 10:00 AM CDT
Expired: Apr 7, 2022, 8:00 PM CDT
In force: 10 hr
Issued by: NWS Norman, OK

All 40 counties

Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Roger Mills County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 105 km from the middle of the area, began a volume at 20:38 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.6 hours before the alert went out and 278 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: 2898 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: -346 m²/s²
0-3 km storm-relative helicity: 56 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 Norman, OK wrote its last area forecast discussion before this red flag warning went out at Apr 6, 12:24 PM CDT, 3 hours 13 minutes earlier.

Area forecast discussion, Apr 6, 12:24 PM CDT, 3 hours 13 minutes before

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Hazardous weather outlook, Apr 6, 3:41 AM CDT, 11 hours 56 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
Apr 5, 11:20 PM CDT	High Wind Warning	OUN	Beckham, Caddo, Comanche, Cotton, Greer, Harmon and 4 more	3 hr
Apr 5, 11:20 PM CDT	Wind Advisory	OUN	Beckham, Caddo, Comanche, Cotton, Greer, Harmon and 4 more	7 hr
Apr 6, 2:51 AM CDT	Wind Advisory	OUN	Alfalfa, Dewey, Ellis, Harper, Major, Roger Mills and 2 more	16 hr
Apr 6, 3:44 PM CDT	Wind Advisory	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 33 more	27 hr

Nearby

Red Flag Warnings in Oklahoma, 2022 Red Flag Warnings in Texas, 2022 Every red flag warning in 2022

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.