Alert archive / Kansas / Mesoscale Discussions in 2013

Mesoscale Discussion 683

May 18, 201321 counties in Kansas

The Storm Prediction Center issued this mesoscale discussion at May 18, 2013, 7:40 PM CDT for 21 counties in Kansas. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
May 18, 2013, 7:40 PM CDT (00:40 UTC)
Expired
May 18, 2013, 8:45 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 21 counties

Barber County, KS, Barton County, KS, Comanche County, KS, Dickinson County, KS, Edwards County, KS, Ellsworth County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, McPherson County, KS, Ottawa County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS

The radar

The Wichita radar (KICT), 91 km from the middle of the area, began a volume at 00:41 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 nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 0.7 hours before the alert went out and 134 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 00:00Z on 2013-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 160 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 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 00:00Z on 2013-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
160 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
4488 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
May 18, 7:29 PM CDTTornado WatchSPCClay, Cloud, Dickinson, Geary, Jewell, Marshall and 7 more5 hr
May 18, 10:00 PM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Coffey, Doniphan, Douglas and 14 more30 min
May 18, 10:39 PM CDTTornado WatchSPCAnderson, Atchison, Brown, Coffey, Doniphan, Douglas and 11 more3 hr
May 18, 11:40 PM CDTMesoscale DiscussionSPCClay, Geary, Marshall, Morris, Pottawatomie, Riley and 1 more35 min
May 19, 5:25 AM CDTMesoscale DiscussionSPCAllen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 2 more2 hr
May 19, 12:51 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Brown, Butler, Chase and 41 more114 min
May 19, 1:47 PM CDTTornado WatchSPCAllen, Anderson, Atchison, Barber, Brown, Butler and 53 more10 hr
May 19, 4:57 PM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Butler, Chase, Chautauqua and 22 more63 min
May 19, 5:54 PM CDTMesoscale DiscussionSPCCherokee, Crawford66 min
May 19, 6:25 PM CDTTornado WatchSPCBourbon, Cherokee, Crawford9 hr
May 19, 6:27 PM CDTMesoscale DiscussionSPCChautauqua, Cowley, Elk63 min

Nearby

Mesoscale Discussions in Kansas, 2013Every mesoscale discussion in 2013

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.