Alert archive / Colorado / Mesoscale Discussions in 2025

Mesoscale Discussion 1913

August 9, 202520 counties in Colorado; 14 counties in Kansas; 5 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2025, 12:53 PM MDT for 20 counties in Colorado; 14 counties in Kansas; 5 counties in Nebraska. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Aug 9, 2025, 12:53 PM MDT (18:53 UTC)
Expired
Aug 9, 2025, 3:30 PM MDT
In force
3 hr
Issued by
the Storm Prediction Center
Concerning
Severe potential...watch likely
Chance of a watch
80%
All 39 counties

Adams County, CO, Arapahoe County, CO, Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Otero County, CO, Phillips County, CO, Prowers County, CO, Pueblo County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Finney County, KS, Gove County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Logan County, KS, Rawlins County, KS, Scott County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Deuel County, NE, Dundy County, NE, Hitchcock County, NE, Perkins County, NE

The radar

The Goodland radar (KGLD), 86 km from the middle of the area, began a volume at 18:58 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

Dodge City, (KDDC), launched 12:00Z, 6.9 hours before the alert went out and 304 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, Dodge City, at 12:00Z on 2025-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 124 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, Dodge City, at 12:00Z on 2025-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.1939Sfc1 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
124 J/kg
Mixed-layer CIN
-409 J/kg
Mixed-layer LCL
3271 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
93 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.

IssuedProductOfficeCountiesLasted
Aug 9, 1:52 PM MDTSevere Thunderstorm WatchSPCCheyenne, Crowley, Elbert, El Paso, Kiowa, Kit Carson and 7 more12 hr
Aug 9, 4:30 PM MDTMesoscale DiscussionSPCKit Carson, Lincoln, Phillips, Sedgwick, Washington, Yuma2 hr
Aug 8, 9:45 PM MDTMesoscale DiscussionSPCCheyenne, Decatur, Norton, Rawlins, Sheridan, Sherman and 1 more2 hr
Aug 9, 1:17 AM MDTSevere Thunderstorm WatchSPCAdams, Buffalo, Burt, Butler, Cass, Clay and 29 more5 hr
Aug 9, 3:28 AM MDTMesoscale DiscussionSPCButler, Cass, Clay, Douglas, Fillmore, Lancaster and 8 more92 min

Nearby

Mesoscale Discussions in Colorado, 2025Mesoscale Discussions in Kansas, 2025Mesoscale Discussions in Nebraska, 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.