Alert archive / Kansas / Mesoscale Discussions in 2009

Mesoscale Discussion 835

May 15, 200930 counties in Kansas; 8 counties in Oklahoma; Hemphill County, Lipscomb County, Texas

The Storm Prediction Center issued this mesoscale discussion at May 15, 2009, 2:44 PM CDT for 30 counties in Kansas; 8 counties in Oklahoma; Hemphill County, Lipscomb County, Texas. It was in force for 31 min.

The area

The outline as issued.

The facts

Issued
May 15, 2009, 2:44 PM CDT (19:44 UTC)
Expired
May 15, 2009, 3:15 PM CDT
In force
31 min
Issued by
the Storm Prediction Center
All 40 counties

Anderson County, KS, Barber County, KS, Butler County, KS, Chase County, KS, Coffey County, KS, Comanche County, KS, Cowley County, KS, Dickinson County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Jefferson County, KS, Johnson County, KS, Kingman County, KS, Lyon County, KS, Marion County, KS, Miami County, KS, Morris County, KS, Osage County, KS, Reno County, KS, Riley County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Woodson County, KS, Alfalfa County, OK, Dewey County, OK, Ellis County, OK, Grant County, OK, Harper County, OK, Major County, OK, Woods County, OK, Woodward County, OK, Hemphill County, TX, Lipscomb County, TX

The radar

The Wichita radar (KICT), 38 km from the middle of the area, began a volume at 19:48 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

Lamont, OK (KLMN), launched 12:00Z, 7.7 hours before the alert went out and 107 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, Lamont, OK at 12:00Z on 2009-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1683 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, Lamont, OK at 12:00Z on 2009-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 275 square meters per square second.193958Sfc1 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
1683 J/kg
Mixed-layer CIN
-139 J/kg
Mixed-layer LCL
876 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
275 m²/s²
0-3 km storm-relative helicity
393 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 15, 2:03 AM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Dickinson, Doniphan and 17 more87 min
May 15, 7:14 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Marshall, Nemaha and 3 more91 min
May 15, 7:42 AM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Clay, Cloud, Doniphan, Douglas and 18 more5 hr
May 15, 11:48 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Marshall, Nemaha57 min
May 15, 12:50 PM CDTTornado WatchSPCAtchison, Doniphan, Johnson, Leavenworth, Linn, Miami and 1 more7 hr
May 15, 3:01 PM CDTMesoscale DiscussionSPCJefferson, Leavenworth, Shawnee, Wyandotte59 min
May 15, 3:02 PM CDTTornado WatchSPCAllen, Anderson, Barber, Butler, Chase, Chautauqua and 29 more7 hr
May 15, 3:43 PM CDTMesoscale DiscussionSPCAtchison, Johnson, Leavenworth, Wyandotte62 min
May 15, 5:31 PM CDTMesoscale DiscussionSPCJohnson, Wyandotte119 min
May 15, 5:52 PM CDTMesoscale DiscussionSPCAnderson, Butler, Chase, Coffey, Cowley, Elk and 8 more53 min
May 15, 6:30 PM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford, Linn, Miami6 hr
May 14, 7:44 PM CDTMesoscale DiscussionSPCBorden, Callahan, Coke, Cottle, Crosby, Dawson and 22 more91 min
May 15, 2:18 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Cochran, Crane, Culberson, Ector and 12 more57 min

Nearby

Mesoscale Discussions in Kansas, 2009Mesoscale Discussions in Oklahoma, 2009Mesoscale Discussions in Texas, 2009Every mesoscale discussion in 2009

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.