Alert archive / Texas / Mesoscale Discussions in 2023

Mesoscale Discussion 613

April 25, 20234 states

The Storm Prediction Center issued this mesoscale discussion at Apr 25, 2023, 2:01 PM MDT for 4 states. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: Apr 25, 2023, 2:01 PM MDT (20:01 UTC)
Expired: Apr 25, 2023, 4:00 PM MDT
In force: 119 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch unlikely
Chance of a watch: 20%

Counties Las Animas County, CO, Curry County, NM, Harding County, NM, Quay County, NM, Union County, NM, Cimarron County, OK, Dallam County, TX, Deaf Smith County, TX, Hartley County, TX, Oldham County, TX, Parmer County, TX

The radar

The Cannon AFB radar (KFDX), 116 km from the middle of the area, began a volume at 20:05 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 166Apr 25, 3:30 PM MDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.0 hours before the alert went out and 143 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: 586 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 249 m²/s²
0-3 km storm-relative helicity: 299 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
Apr 25, 2:43 PM MDT	Mesoscale Discussion	SPC	Greer, Harmon, Jackson, Tillman	2 hr
Apr 25, 3:30 PM MDT	Severe Thunderstorm Watch	SPC	Cimarron, Texas	7 hr
Apr 25, 5:51 PM MDT	Mesoscale Discussion	SPC	Texas	84 min
Apr 25, 3:46 PM MDT	Mesoscale Discussion	SPC	Atascosa, Bastrop, Bee, Caldwell, Colorado, DeWitt and 16 more	89 min
Apr 25, 5:54 PM MDT	Severe Thunderstorm Watch	SPC	Brown, Callahan, Coke, Coleman, Fisher, Haskell and 6 more	4 hr

Nearby

Mesoscale Discussions in Texas, 2023 Mesoscale Discussions in New Mexico, 2023 Mesoscale Discussions in Colorado, 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.