Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 75, NWS Lubbock, TX

May 9, 2015Castro County, Parmer County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at May 9, 2015, 4:58 AM CDT for Castro County, Parmer County, Texas. It was in force for 24 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: May 9, 2015, 4:58 AM CDT (09:58 UTC)
Expired: May 9, 2015, 5:22 AM CDT
In force: 24 min
Issued by: NWS Lubbock, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Castro County, TX, Parmer County, TX

The radar

The Cannon AFB radar (KFDX), 101 km from the middle of the area, began a volume at 10:19 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
May 9, 3:11 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 10.0 hours before the alert went out and 108 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: 20 J/kg
Mixed-layer CIN: -217 J/kg
Mixed-layer LCL: 978 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Lubbock, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 9, 3:43 AM CDT, 1 hour 15 minutes earlier.

Area forecast discussion, May 9, 3:43 AM CDT, 1 hour 15 minutes before

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Hazardous weather outlook, May 9, 3:32 AM CDT, 1 hour 26 minutes before

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In the hours before

Special weather statement, May 9, 3:48 AM CDT, 1 hour 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 3:48 AM CDT	Special Weather Statement	LUB	Hall	27 min
May 9, 4:13 AM CDT	Severe Thunderstorm Warning	LUB	Bailey, Parmer	47 min
May 9, 9:54 AM CDT	Severe Thunderstorm Warning	LUB	Hall	51 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.