Alert archive / Oklahoma / Mesoscale Discussions in 2025

Mesoscale Discussion 615

April 30, 202515 counties in Oklahoma; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2025, 12:39 AM CDT for 15 counties in Oklahoma; 11 counties in Texas. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
Apr 30, 2025, 12:39 AM CDT (05:39 UTC)
Expired
Apr 30, 2025, 2:15 AM CDT
In force
96 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 195
All 26 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Cotton County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, Murray County, OK, Pushmataha County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Cooke County, TX, Foard County, TX, Grayson County, TX, Hardeman County, TX, Knox County, TX, Montague County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 118 km from the middle of the area, began a volume at 05:42 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.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 5.7 hours before the alert went out and 127 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2025-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 285 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2025-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
285 J/kg
Mixed-layer CIN
-145 J/kg
Mixed-layer LCL
585 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
286 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

IssuedProductOfficeCountiesLasted
Apr 29, 9:09 PM CDTMesoscale DiscussionSPCCarter, Cotton, Garvin, Jefferson, Johnston, Love and 3 more96 min
Apr 29, 11:42 PM CDTMesoscale DiscussionSPCCarter, Cotton, Jefferson, Love, Tillman2 hr
Apr 30, 12:54 AM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Comanche and 17 more9 hr
Apr 30, 4:24 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Comanche and 17 more2 hr
Apr 30, 9:07 AM CDTMesoscale DiscussionSPCBryan, Choctaw, McCurtain, Marshall, Pushmataha113 min
Apr 30, 9:50 AM CDTTornado WatchSPCAdair, Choctaw, Haskell, Latimer, LeFlore, McCurtain and 5 more7 hr
Apr 30, 11:21 AM CDTMesoscale DiscussionSPCAdair, Cherokee, McIntosh, Muskogee, Sequoyah84 min
Apr 29, 8:42 PM CDTMesoscale DiscussionSPCBorden, Coke, Cottle, Crosby, Dawson, Dickens and 18 more2 hr
Apr 29, 10:49 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Callahan, Cochran, Cottle, Crosby and 29 more7 hr
Apr 30, 12:17 PM CDTMesoscale DiscussionSPCAnderson, Bell, Bosque, Brazos, Cherokee, Coryell and 22 more118 min
Apr 30, 1:06 PM CDTTornado WatchSPCAnderson, Angelina, Bell, Brazos, Burleson, Cherokee and 23 more7 hr
Apr 30, 2:32 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Castro, Childress, Cochran and 20 more58 min
Apr 30, 5:31 PM CDTMesoscale DiscussionSPCAtascosa, Bexar, Caldwell, Frio, Gonzales, Guadalupe and 4 more89 min

Nearby

Mesoscale Discussions in Oklahoma, 2025Mesoscale Discussions in Texas, 2025Every mesoscale discussion in 2025

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.