Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 124, NWS Amarillo, TX

July 1, 2020Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 1, 2020, 8:13 PM CDT for Beaver County, Oklahoma. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 1, 2020, 8:13 PM CDT (01:13 UTC)
Expired: Jul 1, 2020, 8:38 PM CDT
In force: 25 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 121 km from the middle of the area, began a volume at 01:16 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, 1.2 hours before the alert went out and 124 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: 2659 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1707 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 1, 6:16 PM CDT, 1 hour 57 minutes earlier.

Area forecast discussion, Jul 1, 6:16 PM CDT, 1 hour 57 minutes before

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Hazardous weather outlook, Jul 1, 8:09 PM CDT, 4 minutes before

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In the hours before

Special weather statement, Jul 1, 8:02 PM CDT, 11 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
Jul 2, 3:39 PM CDT	Special Weather Statement	AMA	Carson, Potter	66 min
Jul 2, 4:40 PM CDT	Special Weather Statement	AMA	Roberts	65 min
Jul 2, 4:43 PM CDT	Special Weather Statement	AMA	Carson	62 min
Jul 2, 5:22 PM CDT	Special Weather Statement	AMA	Hansford	53 min
Jul 1, 8:02 PM CDT	Special Weather Statement	AMA	Beaver	58 min
Jul 2, 5:31 PM CDT	Special Weather Statement	AMA	Texas	29 min
Jul 2, 6:13 PM CDT	Special Weather Statement	AMA	Texas	62 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2020 Every severe thunderstorm 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.