Alert archive / Kansas / Mesoscale Discussions in 2019

Mesoscale Discussion 671

May 18, 201912 counties in Kansas; 9 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 18, 2019, 3:31 PM CDT for 12 counties in Kansas; 9 counties in Oklahoma. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
May 18, 2019, 3:31 PM CDT (20:31 UTC)
Expired
May 18, 2019, 5:30 PM CDT
In force
119 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 21 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ford County, KS, Gray County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Meade County, KS, Pratt County, KS, Stafford County, KS, Alfalfa County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Major County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 90 km from the middle of the area, began a volume at 20:33 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, 8.5 hours before the alert went out and 125 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 2019-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2019-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2065 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
68 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 17, 7:00 PM CDTMesoscale DiscussionSPCClark, Finney, Ford, Gray, Haskell, Hodgeman and 2 more2 hr
May 17, 7:39 PM CDTSevere Thunderstorm WatchSPCBarton, Clark, Comanche, Edwards, Ellis, Ford and 11 more3 hr
May 17, 8:52 PM CDTTornado WatchSPCBarton, Clark, Comanche, Edwards, Ellis, Ellsworth and 15 more5 hr
May 17, 9:55 PM CDTMesoscale DiscussionSPCEdwards65 min
May 17, 10:35 PM CDTTornado WatchSPCClay, Cloud, Dickinson, Jewell, Mitchell, Osborne and 3 more3 hr
May 17, 11:14 PM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 30 more2 hr
May 17, 11:45 PM CDTSevere Thunderstorm WatchSPCGeary, Marshall, Nemaha, Pottawatomie, Riley3 hr
May 18, 7:47 AM CDTMesoscale DiscussionSPCButler, Chautauqua, Cowley, Elk, Greenwood, Harper and 6 more88 min
May 18, 9:38 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 4 more2 hr
May 18, 10:07 AM CDTTornado WatchSPCAllen, Anderson, Bourbon, Butler, Chautauqua, Cherokee and 11 more7 hr
May 18, 3:48 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Ellsworth, Ford and 16 more6 hr
May 18, 6:07 PM CDTMesoscale DiscussionSPCBarber, Butler, Clark, Comanche, Cowley, Edwards and 12 more83 min
May 18, 1:35 AM CDTMesoscale DiscussionSPCCarter, Comanche, Cotton, Garvin, Grady, Jefferson and 2 more2 hr
May 18, 2:20 AM CDTTornado WatchSPCCarter, Cleveland, Comanche, Cotton, Garvin, Grady and 9 more8 hr
May 18, 5:11 AM CDTMesoscale DiscussionSPCCarter, Comanche, Cotton, Garvin, Jefferson, Love and 3 more2 hr
May 18, 6:51 AM CDTMesoscale DiscussionSPCCarter, Cleveland, Coal, Cotton, Garvin, Grady and 11 more114 min
May 18, 9:10 AM CDTTornado WatchSPCAdair, Atoka, Bryan, Cherokee, Choctaw, Coal and 27 more8 hr
May 18, 12:11 PM CDTMesoscale DiscussionSPCChoctaw, Latimer, LeFlore, McCurtain, Pushmataha64 min
May 18, 12:47 PM CDTMesoscale DiscussionSPCAdair, Sequoyah88 min
May 18, 12:48 PM CDTTornado WatchSPCMcCurtain7 hr

Nearby

Mesoscale Discussions in Kansas, 2019Mesoscale Discussions in Oklahoma, 2019Every mesoscale discussion in 2019

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.