Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 96

January 24, 20234 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jan 24, 2023, 3:06 PM CST for 4 counties in Texas. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued: Jan 24, 2023, 3:06 PM CST (21:06 UTC)
Expired: Jan 24, 2023, 4:30 PM CST
In force: 84 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 27

Counties Chambers County, TX, Galveston County, TX, Jefferson County, TX, Orange County, TX

The radar

The Houston radar (KHGX), 66 km from the middle of the area, began a volume at 21:08 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.1 hours before the alert went out and 129 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 395 m²/s²
0-3 km storm-relative helicity: 502 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 24, 2:35 AM CST	Mesoscale Discussion	SPC	Parmer	2 hr
Jan 24, 10:16 AM CST	Mesoscale Discussion	SPC	Brazoria, Calhoun, Chambers, Fort Bend, Galveston, Goliad and 10 more	119 min
Jan 24, 10:49 AM CST	Tornado Watch	SPC	Aransas, Austin, Bee, Brazoria, Calhoun, Chambers and 18 more	7 hr
Jan 24, 11:08 AM CST	Mesoscale Discussion	SPC	Wichita	6 hr
Jan 24, 12:50 PM CST	Mesoscale Discussion	SPC	Brazoria, Fort Bend, Jackson, Wharton	115 min

Nearby

Mesoscale Discussions in Texas, 2023 Every mesoscale discussion in 2023

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.