Alert archive / Kansas / Mesoscale Discussions in 2015

Mesoscale Discussion 309

April 16, 201540 counties in Kansas; Beaver County, Harper County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 16, 2015, 12:17 PM CDT for 40 counties in Kansas; Beaver County, Harper County, Oklahoma. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Apr 16, 2015, 12:17 PM CDT (17:17 UTC)
Expired
Apr 16, 2015, 2:15 PM CDT
In force
118 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 42 counties

Barton County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Meade County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Stafford County, KS, Stevens County, KS, Thomas County, KS, Trego County, KS, Wichita County, KS, Beaver County, OK, Harper County, OK

The radar

The Dodge City radar (KDDC), 39 km from the middle of the area, began a volume at 17:16 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, 5.3 hours before the alert went out and 43 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 2015-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 283 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 2015-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 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
283 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
1583 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 16, 3:08 PM CDTMesoscale DiscussionSPCBarton, Clark, Clay, Cloud, Edwards, Ellis and 32 more2 hr
Apr 16, 4:02 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Clark, Comanche, Edwards, Ford and 17 more6 hr
Apr 16, 6:23 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Clark, Comanche and 23 more97 min
Apr 16, 1:48 PM CDTTornado WatchSPCBeaver, Texas8 hr
Apr 16, 2:42 PM CDTMesoscale DiscussionSPCLove63 min
Apr 16, 4:06 PM CDTMesoscale DiscussionSPCJackson2 hr
Apr 16, 4:40 PM CDTSevere Thunderstorm WatchSPCComanche, Cotton, Greer, Harmon, Jackson, Kiowa and 1 more7 hr
Apr 16, 4:44 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Custer, Dewey, Ellis, Greer and 7 more3 hr
Apr 16, 4:59 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Beckham, Blaine, Caddo, Custer, Dewey and 9 more7 hr
Apr 16, 5:06 PM CDTMesoscale DiscussionSPCBeaver, Texas84 min
Apr 16, 5:29 PM CDTMesoscale DiscussionSPCCimarron91 min
Apr 16, 5:41 PM CDTMesoscale DiscussionSPCBeckham, Roger Mills94 min
Apr 16, 6:09 PM CDTTornado WatchSPCBeckham, Ellis, Greer, Harmon, Roger Mills6 hr

Nearby

Mesoscale Discussions in Kansas, 2015Mesoscale Discussions in Oklahoma, 2015Every mesoscale discussion in 2015

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.