Alert archive / Texas / Special Weather Statements in 2018

Special Weather Statement, NWS Austin/San Antonio, TX

November 8, 2018Bexar County, Texas

NWS Austin/San Antonio, TX issued this special weather statement at Nov 8, 2018, 10:09 PM CST for Bexar County, Texas. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Nov 8, 2018, 10:09 PM CST (04:09 UTC)
Expired: Nov 8, 2018, 11:00 PM CST
In force: 51 min
Issued by: NWS Austin/San Antonio, TX

County Bexar County, TX

The radar

The Austin/San Antonio radar (KEWX), 67 km from the middle of the area, began a volume at 04:07 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

Corpus Christi, TX (KCRP), launched 00:00Z, 4.2 hours before the alert went out and 203 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: 2016 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 763 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 120 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 9.0

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 8, 8:58 PM CST	Special Weather Statement	EWX	Medina	47 min
Nov 8, 9:45 PM CST	Special Weather Statement	EWX	Bexar	45 min
Nov 8, 10:04 PM CST	Areal Flood Advisory	EWX	Medina	3 hr
Nov 8, 10:23 PM CST	Areal Flood Advisory	EWX	Bexar	3 hr
Nov 8, 10:31 PM CST	Special Weather Statement	EWX	Hays	44 min
Nov 8, 10:54 PM CST	Special Weather Statement	EWX	Wilson	51 min
Nov 8, 11:12 PM CST	Areal Flood Advisory	EWX	Atascosa, Bexar, Medina	2 hr
Nov 9, 12:05 AM CST	Areal Flood Advisory	EWX	Atascosa, Bexar, Wilson	3 hr
Nov 9, 7:35 AM CST	Areal Flood Advisory	EWX	Bexar	115 min
Nov 9, 7:43 AM CST	Areal Flood Advisory	EWX	DeWitt	2 hr

Nearby

Special Weather Statements in Texas, 2018 Every special weather statement in 2018

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.