Alert archive / Colorado / Mesoscale Discussions in 2023

Mesoscale Discussion 876

May 26, 202310 counties in Colorado; Banner County, Kimball County, Scotts Bluff County, Nebraska; Laramie County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at May 26, 2023, 4:33 PM MDT for 10 counties in Colorado; Banner County, Kimball County, Scotts Bluff County, Nebraska; Laramie County, Wyoming. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: May 26, 2023, 4:33 PM MDT (22:33 UTC)
Expired: May 26, 2023, 6:30 PM MDT
In force: 117 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 240

Counties Adams County, CO, Arapahoe County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Washington County, CO, Weld County, CO, Banner County, NE, Kimball County, NE, Scotts Bluff County, NE, Laramie County, WY

The radar

The Denver radar (KFTG), 44 km from the middle of the area, began a volume at 22:34 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.6 hours before the alert went out and 336 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: 804 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 92 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
May 26, 11:56 AM MDT	Mesoscale Discussion	SPC	Adams, Arapahoe, Bent, Boulder, Broomfield, Cheyenne and 19 more	2 hr
May 26, 1:33 PM MDT	Severe Thunderstorm Watch	SPC	Adams, Arapahoe, Boulder, Broomfield, Crowley, Denver and 12 more	7 hr
May 26, 2:42 PM MDT	Mesoscale Discussion	SPC	Campbell, Crook, Johnson, Sheridan, Weston	2 hr
May 26, 4:26 PM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Campbell, Crook, Johnson, Sheridan, Washakie and 1 more	6 hr

Nearby

Mesoscale Discussions in Colorado, 2023 Mesoscale Discussions in Nebraska, 2023 Mesoscale Discussions in Wyoming, 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.