Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 152, NWS Amarillo, TX

June 18, 2015Moore County, Sherman County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 18, 2015, 4:04 PM CDT for Moore County, Sherman County, Texas. It was in force for 26 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: Jun 18, 2015, 4:04 PM CDT (21:04 UTC)
Expired: Jun 18, 2015, 4:30 PM CDT
In force: 26 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Moore County, TX, Sherman County, TX

The radar

The Amarillo radar (KAMA), 93 km from the middle of the area, began a volume at 21:03 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 18, 2:10 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 9.1 hours before the alert went out and 260 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: 69 J/kg
Mixed-layer CIN: -306 J/kg
Mixed-layer LCL: 1235 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 70 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 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 Jun 18, 3:46 PM CDT, 18 minutes earlier.

Area forecast discussion, Jun 18, 3:46 PM CDT, 18 minutes before

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Hazardous weather outlook, Jun 18, 3:17 PM CDT, 47 minutes before

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In the hours before

Special weather statement, Jun 18, 2:11 PM CDT, 1 hour 53 minutes before

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Special weather statement, Jun 18, 2:58 PM CDT, 1 hour 6 minutes before

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Special weather statement, Jun 18, 3:48 PM CDT, 16 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
Jun 17, 7:06 PM CDT	Special Weather Statement	AMA	Dallam	39 min
Jun 17, 7:50 PM CDT	Special Weather Statement	AMA	Dallam	40 min
Jun 18, 2:58 PM CDT	Special Weather Statement	AMA	Sherman	62 min
Jun 18, 3:48 PM CDT	Special Weather Statement	AMA	Moore, Sherman	72 min
Jun 18, 4:28 PM CDT	Special Weather Statement	AMA	Dallam, Hartley	62 min
Jun 18, 4:53 PM CDT	Areal Flood Advisory	AMA	Dallam	3 hr
Jun 18, 5:29 PM CDT	Special Weather Statement	AMA	Dallam, Hartley	61 min
Jun 18, 6:24 PM CDT	Special Weather Statement	AMA	Oldham	66 min
Jun 18, 2:11 PM CDT	Special Weather Statement	AMA	Cimarron, Texas	64 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.