Alert archive / Oklahoma / Freeze Warnings in 2007

Freeze Warning 9, NWS Norman, OK

November 14, 200720 counties in Oklahoma; Foard County, Hardeman County, Wilbarger County, Texas

NWS Norman, OK issued this freeze warning at Nov 14, 2007, 3:35 PM CST for 20 counties in Oklahoma; Foard County, Hardeman County, Wilbarger County, Texas. It took effect at Nov 14, 2007, 9:30 PM CST. It was in force for 11 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: Nov 14, 2007, 3:35 PM CST (21:35 UTC)
In effect from: Nov 14, 2007, 9:30 PM CST
Expired: Nov 15, 2007, 8:00 AM CST
In force: 11 hr
Issued by: NWS Norman, OK

All 23 counties

Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, Noble County, OK, Payne County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Foard County, TX, Hardeman County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 107 km from the middle of the area, began a volume at 21:40 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

Fort Sill, OK (KFSI), launched 12:00Z, 9.6 hours before the alert went out and 79 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: 1565 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: 240 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 freeze 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 freeze warning went out at Nov 14, 3:09 PM CST, 26 minutes earlier.

Area forecast discussion, Nov 14, 3:09 PM CST, 26 minutes before

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Hazardous weather outlook, Nov 14, 2:50 PM CST, 45 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
Nov 14, 8:03 AM CST	Wind Advisory	OUN	Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 18 more	7 hr
Nov 14, 12:12 PM CST	Red Flag Warning	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 27 more	6 hr

Nearby

Freeze Warnings in Oklahoma, 2007 Freeze Warnings in Texas, 2007 Every freeze warning in 2007

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.