Alert archive / Kansas / Mesoscale Discussions in 2017

Mesoscale Discussion 687

May 10, 201716 counties in Kansas; 9 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 10, 2017, 3:37 PM CDT for 16 counties in Kansas; 9 counties in Oklahoma. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued
May 10, 2017, 3:37 PM CDT (20:37 UTC)
Expired
May 10, 2017, 5:30 PM CDT
In force
113 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 25 counties

Allen County, KS, Bourbon County, KS, Butler County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Labette County, KS, Montgomery County, KS, Neosho County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Craig County, OK, Grant County, OK, Kay County, OK, Noble County, OK, Nowata County, OK, Osage County, OK, Pawnee County, OK, Rogers County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 128 km from the middle of the area, began a volume at 20:41 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 (KFOE), launched 12:00Z, 8.6 hours before the alert went out and 199 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 2017-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 262 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 2017-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
262 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1254 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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, 7:15 PM CDTMesoscale DiscussionSPCCloud, Jewell, Marshall, Mitchell, Osborne, Phillips and 4 more2 hr
May 9, 9:32 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Finney, Gove, Graham, Grant and 16 more58 min
May 10, 1:29 AM CDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Gove, Graham, Jewell and 12 more61 min
May 10, 6:04 AM CDTMesoscale DiscussionSPCBarber, Comanche, Harper, Kingman116 min
May 10, 12:39 PM CDTMesoscale DiscussionSPCBourbon, Franklin, Johnson, Leavenworth, Linn, Miami and 1 more3 hr
May 10, 3:11 PM CDTMesoscale DiscussionSPCGrant, Haskell, Morton, Seward, Stevens94 min
May 10, 6:30 PM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford2 hr
May 9, 10:59 PM CDTSevere Thunderstorm WatchSPCBeaver8 hr
May 10, 2:14 PM CDTMesoscale DiscussionSPCBeckham, Caddo, Canadian, Comanche, Cotton, Custer and 8 more61 min
May 10, 2:43 PM CDTTornado WatchSPCCaddo, Comanche, Cotton, Grady, Greer, Harmon and 5 more7 hr
May 10, 5:27 PM CDTSevere Thunderstorm WatchSPCBeaver, Texas3 hr
May 10, 5:58 PM CDTMesoscale DiscussionSPCBeckham, Caddo, Comanche, Cotton, Grady, Greer and 5 more2 hr

Nearby

Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017

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.