Alert archive / Texas / Mesoscale Discussions in 2011

Mesoscale Discussion 1248

June 16, 20116 counties in Kansas; 8 counties in Oklahoma; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2011, 3:37 PM CDT for 6 counties in Kansas; 8 counties in Oklahoma; 11 counties in Texas. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued
Jun 16, 2011, 3:37 PM CDT (20:37 UTC)
Expired
Jun 16, 2011, 5:00 PM CDT
In force
83 min
Issued by
the Storm Prediction Center
All 25 counties

Clark County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Meade County, KS, Seward County, KS, Beaver County, OK, Beckham County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Roger Mills County, OK, Woodward County, OK, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Gray County, TX, Hall County, TX, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 148 km from the middle of the area, began a volume at 20:38 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, 8.6 hours before the alert went out and 193 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 2011-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2230 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 2011-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 283 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
2230 J/kg
Mixed-layer CIN
-375 J/kg
Mixed-layer LCL
1600 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
283 m²/s²
0-3 km storm-relative helicity
516 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

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
Jun 16, 11:52 AM CDTMesoscale DiscussionSPCChautauqua, Cowley, Montgomery53 min
Jun 16, 12:26 PM CDTSevere Thunderstorm WatchSPCChautauqua, Cherokee, Cowley, Elk, Labette, Montgomery and 2 more7 hr
Jun 16, 3:53 PM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Ellis, Ford and 10 more6 hr
Jun 16, 6:18 PM CDTMesoscale DiscussionSPCBarber, Barton, Cheyenne, Clark, Comanche, Decatur and 30 more87 min
Jun 16, 6:34 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Chase, Cheyenne, Cloud, Cowley and 31 more7 hr
Jun 15, 11:18 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Dewey, Ellis, Harper, Major and 2 more57 min
Jun 16, 5:17 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Craig, Delaware, Mayes, Muskogee and 8 more58 min

Nearby

Mesoscale Discussions in Texas, 2011Mesoscale Discussions in Oklahoma, 2011Mesoscale Discussions in Kansas, 2011Every mesoscale discussion in 2011

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.