Alert archive / Texas / Freeze Warnings in 2019

Freeze Warning 1, NWS Austin/San Antonio, TX

March 3, 201930 counties in Texas

NWS Austin/San Antonio, TX issued this freeze warning at Mar 3, 2019, 4:01 PM CST for 30 counties in Texas. It took effect at Mar 3, 2019, 9:00 PM CST. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 3, 2019, 4:01 PM CST (22:01 UTC)
In effect from: Mar 3, 2019, 9:00 PM CST
Expired: Mar 4, 2019, 2:58 PM CST
In force: 18 hr
Issued by: NWS Austin/San Antonio, TX

All 30 counties

Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, DeWitt County, TX, Edwards County, TX, Fayette County, TX, Frio County, TX, Gillespie County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Kendall County, TX, Kerr County, TX, Kinney County, TX, Lavaca County, TX, Lee County, TX, Llano County, TX, Medina County, TX, Real County, TX, Travis County, TX, Uvalde County, TX, Val Verde County, TX, Williamson County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 44 km from the middle of the area, began a volume at 21:59 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 nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 10.0 hours before the alert went out and 254 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: 576 J/kg
Mixed-layer CIN: -217 J/kg
Mixed-layer LCL: 486 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this freeze warning went out at Mar 3, 4:01 PM CST, 0 minutes earlier.

Area forecast discussion, Mar 3, 4:01 PM CST, 0 minutes before

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Hazardous weather outlook, Mar 3, 4:01 PM CST, 0 minutes before

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In the hours before

Special weather statement, Mar 3, 2:57 PM CST, 1 hour 4 minutes before

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Nearby

Freeze Warnings in Texas, 2019 Every freeze warning in 2019

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.