Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 95, NWS Houston/Galveston, TX

May 11, 2017Madison County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 11, 2017, 4:00 PM CDT for Madison County, Texas. It was in force for 15 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 11, 2017, 4:00 PM CDT (21:00 UTC)
Expired: May 11, 2017, 4:15 PM CDT
In force: 15 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Madison County, TX

The radar

The Ft Hood radar (KGRK), 142 km from the middle of the area, began a volume at 20:59 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 11, 2:43 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.0 hours before the alert went out and 244 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1665 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 110 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 Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 11, 4:00 PM CDT, 0 minutes earlier.

Area forecast discussion, May 11, 4:00 PM CDT, 0 minutes before

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Hazardous weather outlook, May 11, 5:35 AM CDT, 10 hours 25 minutes before

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In the hours before

Special weather statement, May 11, 3:13 PM CDT, 47 minutes before

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Special weather statement, May 11, 3:41 PM CDT, 19 minutes before

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Special weather statement, May 11, 3:45 PM CDT, 15 minutes before

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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 11, 3:13 PM CDT	Special Weather Statement	HGX	Houston, Madison	47 min
May 11, 3:41 PM CDT	Special Weather Statement	HGX	Houston	34 min
May 11, 3:45 PM CDT	Special Weather Statement	HGX	Madison	30 min
May 11, 4:18 PM CDT	Special Weather Statement	HGX	Houston	42 min
May 11, 4:38 PM CDT	Special Weather Statement	HGX	Houston	67 min
May 11, 5:20 PM CDT	Special Weather Statement	HGX	Houston	25 min
May 11, 5:42 PM CDT	Special Weather Statement	HGX	Houston	48 min
May 11, 6:45 PM CDT	Special Weather Statement	HGX	Houston	60 min
May 11, 6:54 PM CDT	Special Weather Statement	HGX	Burleson	66 min

Nearby

Severe Thunderstorm Warnings in Texas, 2017 Every severe thunderstorm warning in 2017

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.