Alert archive / Kansas / Mesoscale Discussions in 2023

Mesoscale Discussion 739

May 9, 202329 counties in Kansas; Franklin County, Nuckolls County, Webster County, Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 9, 2023, 10:02 AM CDT for 29 counties in Kansas; Franklin County, Nuckolls County, Webster County, Nebraska. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
May 9, 2023, 10:02 AM CDT (15:02 UTC)
Expired
May 9, 2023, 11:30 AM CDT
In force
88 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 203
All 32 counties

Chase County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellis County, KS, Ellsworth County, KS, Geary County, KS, Graham County, KS, Jewell County, KS, Lincoln County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Mitchell County, KS, Morris County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Wabaunsee County, KS, Washington County, KS, Franklin County, NE, Nuckolls County, NE, Webster County, NE

The radar

The Grand Island radar (KUEX), 117 km from the middle of the area, began a volume at 15:02 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

Topeka, KS (KTOP), launched 12:00Z, 3.0 hours before the alert went out and 214 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, Topeka, KS at 12:00Z on 2023-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 54 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, Topeka, KS at 12:00Z on 2023-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -62 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
54 J/kg
Mixed-layer CIN
-258 J/kg
Mixed-layer LCL
1232 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-62 m²/s²
0-3 km storm-relative helicity
-13 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
May 9, 6:24 AM CDTMesoscale DiscussionSPCCloud, Decatur, Jewell, Mitchell, Norton, Osborne and 5 more66 min
May 9, 6:33 AM CDTSevere Thunderstorm WatchSPCDecatur, Ellis, Gove, Graham, Jewell, Lane and 16 more6 hr
May 9, 10:33 AM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Barton, Butler, Chase, Clay and 30 more7 hr
May 9, 1:28 PM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 14 more92 min
May 9, 2:44 PM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford91 min
May 9, 3:27 PM CDTMesoscale DiscussionSPCFinney, Gove, Greeley, Hodgeman, Lane, Logan and 8 more93 min
May 9, 3:53 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 12 more97 min
May 9, 4:02 PM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford, Elk, Johnson, Labette and 6 more6 hr
May 9, 5:56 PM CDTMesoscale DiscussionSPCBourbon, Chautauqua, Cherokee, Crawford, Labette, Montgomery and 1 more94 min

Nearby

Mesoscale Discussions in Kansas, 2023Mesoscale Discussions in Nebraska, 2023Every 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.