Alert archive / Oklahoma / Winter Storm Warnings in 2013

Winter Storm Warning 5, NWS Norman, OK

December 4, 201335 counties in Oklahoma; 8 counties in Texas

NWS Norman, OK issued this winter storm warning at Dec 4, 2013, 9:42 AM CST for 35 counties in Oklahoma; 8 counties in Texas. It took effect at Dec 5, 2013, 6:00 AM CST. It was in force for 30 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: Dec 4, 2013, 9:42 AM CST (15:42 UTC)
In effect from: Dec 5, 2013, 6:00 AM CST
Expired: Dec 6, 2013, 12:04 PM CST
In force: 30 hr
Issued by: NWS Norman, OK

All 43 counties

Atoka County, OK, Blaine County, OK, Bryan County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Hughes County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Oklahoma County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita 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 Norman radar (KTLX), 92 km from the middle of the area, began a volume at 15:39 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, 3.7 hours before the alert went out and 346 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: 1811 m above ground
0-6 km bulk shear: 84 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 236 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 winter storm 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 winter storm warning went out at Dec 4, 5:29 AM CST, 4 hours 13 minutes earlier.

Area forecast discussion, Dec 4, 5:29 AM CST, 4 hours 13 minutes before

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Hazardous weather outlook, Dec 4, 5:00 AM CST, 4 hours 42 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
Dec 4, 9:42 AM CST	Winter Weather Advisory	OUN	Alfalfa, Beckham, Caddo, Canadian, Cleveland, Comanche and 26 more	50 hr

Nearby

Winter Storm Warnings in Oklahoma, 2013 Winter Storm Warnings in Texas, 2013 Every winter storm warning in 2013

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.