Alert archive / Oklahoma / Wind Chill Advisories in 2009

Wind Chill Advisory 2, NWS Amarillo, TX

December 24, 2009Beaver County, Texas County, Oklahoma

NWS Amarillo, TX issued this wind chill advisory at Dec 24, 2009, 3:41 PM CST for Beaver County, Texas County, Oklahoma. It took effect at Dec 25, 2009, 12:00 AM CST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Dec 24, 2009, 3:41 PM CST (21:41 UTC)
In effect from: Dec 25, 2009, 12:00 AM CST
Expired: Dec 25, 2009, 9:00 AM CST
In force: 9 hr
Issued by: NWS Amarillo, TX

Counties Beaver County, OK, Texas County, OK

The radar

The Dodge City radar (KDDC), 144 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

Lamont, OK (KLMN), launched 12:00Z, 9.7 hours before the alert went out and 313 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: 594 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 200 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 chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this wind chill advisory went out at Dec 24, 2:38 PM CST, 1 hour 3 minutes earlier.

Area forecast discussion, Dec 24, 2:38 PM CST, 1 hour 3 minutes before

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Hazardous weather outlook, Dec 24, 1:58 PM CST, 1 hour 43 minutes before

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In the hours before

Local storm report, Dec 24, 12:15 PM CST, 3 hours 26 minutes before

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Local storm report, Dec 24, 12:16 PM CST, 3 hours 25 minutes before

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Local storm report, Dec 24, 1:12 PM CST, 2 hours 29 minutes before

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The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 24, 5:06 AM CST	Blizzard Warning	AMA	Armstrong, Carson, Collingsworth, Donley, Gray, Hemphill and 1 more	13 hr

Nearby

Wind Chill Advisories in Oklahoma, 2009 Every wind chill advisory in 2009

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.