Alert archive / Texas / Red Flag Warnings in 2020

Red Flag Warning 14, NWS Amarillo, TX

May 12, 2020Dallam County, Hartley County, Texas; Cimarron County, Oklahoma

NWS Amarillo, TX issued this red flag warning at May 12, 2020, 2:52 PM CDT for Dallam County, Hartley County, Texas; Cimarron County, Oklahoma. It took effect at May 13, 2020, 12:00 PM 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: May 12, 2020, 2:52 PM CDT (19:52 UTC)
In effect from: May 13, 2020, 12:00 PM CDT
Expired: May 13, 2020, 10:00 PM CDT
In force: 10 hr
Issued by: NWS Amarillo, TX

Counties Cimarron County, OK, Dallam County, TX, Hartley County, TX

The radar

The Amarillo radar (KAMA), 141 km from the middle of the area, began a volume at 19:57 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, 7.9 hours before the alert went out and 142 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: 538 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 299 m²/s²
0-3 km storm-relative helicity: 304 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 Amarillo, TX wrote its last area forecast discussion before this red flag warning went out at May 12, 12:34 PM CDT, 2 hours 18 minutes earlier.

Area forecast discussion, May 12, 12:34 PM CDT, 2 hours 18 minutes before

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Hazardous weather outlook, May 12, 8:50 AM CDT, 6 hours 2 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
May 11, 7:21 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	54 min
May 11, 7:24 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	66 min
May 11, 7:31 PM CDT	Special Weather Statement	AMA	Sherman	59 min
May 11, 8:04 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	56 min
May 11, 8:15 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Deaf Smith, Oldham, Potter, Randall	60 min
May 11, 8:55 PM CDT	Special Weather Statement	AMA	Moore	35 min
May 11, 8:56 PM CDT	Special Weather Statement	AMA	Gray	34 min
May 11, 9:13 PM CDT	Special Weather Statement	AMA	Moore	32 min
May 12, 12:39 AM CDT	Dense Fog Advisory	AMA	Armstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 11 more	8 hr

Nearby

Red Flag Warnings in Texas, 2020 Red Flag Warnings in Oklahoma, 2020 Every red flag warning in 2020

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.