Alert archive / Texas / Snow Advisories in 2007

Snow Advisory 8, NWS Amarillo, TX

December 14, 200712 counties in Texas; Cimarron County, Texas County, Oklahoma

NWS Amarillo, TX issued this snow advisory at Dec 14, 2007, 4:16 AM CST for 12 counties in Texas; Cimarron County, Texas County, Oklahoma. It took effect at Dec 14, 2007, 12:00 PM CST. It was in force for 5 min.

The area

The counties it named.

The facts

Issued: Dec 14, 2007, 4:16 AM CST (10:16 UTC)
In effect from: Dec 14, 2007, 12:00 PM CST
Expired: Dec 14, 2007, 12:05 PM CST
In force: 5 min
Issued by: NWS Amarillo, TX

Counties Cimarron County, OK, Texas County, OK, Armstrong County, TX, Carson County, TX, Dallam County, TX, Deaf Smith County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Moore County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 65 km from the middle of the area, began a volume at 10:15 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

Dodge City, (KDDC), launched 00:00Z, 10.3 hours before the alert went out and 287 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: 1417 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 249 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 snow 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 snow advisory went out at Dec 14, 3:53 AM CST, 23 minutes earlier.

Area forecast discussion, Dec 14, 3:53 AM CST, 23 minutes before

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Hazardous weather outlook, Dec 13, 10:08 PM CST, 6 hours 8 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 13, 10:34 PM CST	Dense Fog Advisory	AMA	Armstrong, Carson, Collingsworth, Deaf Smith, Donley, Gray and 6 more	6 hr
Dec 14, 4:16 AM CST	Heavy Snow Warning	AMA	Collingsworth, Donley, Gray, Hemphill, Lipscomb, Ochiltree and 2 more	8 hr
Dec 14, 4:30 AM CST	Freezing Fog Advisory	AMA	Armstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 14 more	8 hr
Dec 14, 12:05 PM CST	Winter Storm Warning	AMA	Collingsworth, Donley, Gray, Hemphill, Lipscomb, Ochiltree and 2 more	18 hr
Dec 14, 12:05 PM CST	Winter Weather Advisory	AMA	Armstrong, Carson, Dallam, Deaf Smith, Hansford, Hartley and 6 more	18 hr

Nearby

Snow Advisories in Texas, 2007 Snow Advisories in Oklahoma, 2007 Every snow advisory 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.