Alert archive / Oklahoma / Mesoscale Discussions in 2015

Mesoscale Discussion 563

May 9, 20159 counties in Kansas; 13 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 9, 2015, 11:36 AM CDT for 9 counties in Kansas; 13 counties in Oklahoma. It was in force for 84 min.

The area

The outline as issued.

The facts

Issued
May 9, 2015, 11:36 AM CDT (16:36 UTC)
Expired
May 9, 2015, 1:00 PM CDT
In force
84 min
Issued by
the Storm Prediction Center
All 22 counties

Barber County, KS, Edwards County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Stafford County, KS, Alfalfa County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Greer County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Major County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK

The radar

The Vance AFB radar (KVNX), 64 km from the middle of the area, began a volume at 16:40 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, 4.6 hours before the alert went out and 174 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 2015-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 97 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 2015-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
97 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
535 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
74 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 9, 5:51 AM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Edwards, Finney, Ford and 19 more84 min
May 9, 7:36 AM CDTSevere Thunderstorm WatchSPCBarber, Clark, Comanche, Edwards, Finney, Ford and 12 more6 hr
May 9, 12:40 PM CDTMesoscale DiscussionSPCGreeley, Hamilton, Morton, Sherman, Stanton, Wallace and 1 more65 min
May 9, 12:55 PM CDTTornado WatchSPCCheyenne, Clark, Decatur, Finney, Ford, Gove and 25 more11 hr
May 9, 3:34 PM CDTMesoscale DiscussionSPCCheyenne, Finney, Grant, Gray, Greeley, Hamilton and 14 more56 min
May 9, 6:16 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Finney, Gove, Grant, Gray and 18 more119 min
May 8, 7:27 PM CDTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Creek and 18 more6 hr
May 8, 10:43 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Haskell, Latimer and 4 more92 min
May 9, 3:11 AM CDTSevere Thunderstorm WatchSPCBeaver, Cimarron, Texas8 hr
May 9, 4:03 AM CDTMesoscale DiscussionSPCComanche, Cotton, Greer, Harmon, Jackson, Kiowa and 1 more57 min
May 9, 9:41 AM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Coal, Johnston, LeFlore and 5 more2 hr
May 9, 1:21 PM CDTTornado WatchSPCAtoka, Bryan, Caddo, Canadian, Carter, Cleveland and 23 more10 hr
May 9, 1:58 PM CDTMesoscale DiscussionSPCLeFlore, McCurtain92 min
May 9, 2:40 PM CDTTornado WatchSPCMcCurtain7 hr
May 9, 3:32 PM CDTMesoscale DiscussionSPCBryan, Carter, Coal, Cotton, Garvin, Hughes and 10 more118 min
May 9, 4:52 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Roger Mills83 min
May 9, 5:52 PM CDTMesoscale DiscussionSPCBryan, Carter, Cotton, Jefferson, Johnston, Love and 1 more83 min

Nearby

Mesoscale Discussions in Oklahoma, 2015Mesoscale Discussions in Kansas, 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.