Alert archive / Kansas / Mesoscale Discussions in 2009

Mesoscale Discussion 752

May 7, 200945 counties in Kansas; 4 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at May 7, 2009, 10:53 PM CDT for 45 counties in Kansas; 4 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 7, 2009, 10:53 PM CDT (03:53 UTC)
Expired
May 8, 2009, 1:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 49 counties

Allen County, KS, Barber County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Clark County, KS, Coffey County, KS, Comanche County, KS, Cowley County, KS, Edwards County, KS, Elk County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Gray County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Hodgeman County, KS, Kingman County, KS, Kiowa County, KS, Lane County, KS, Logan County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Meade County, KS, Montgomery County, KS, Ness County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Rush County, KS, Saline County, KS, Scott County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Thomas County, KS, Wichita County, KS, Wilson County, KS, Woodson County, KS, Grant County, OK, Kay County, OK, Osage County, OK, Washington County, OK

The radar

The Dodge City radar (KDDC), 93 km from the middle of the area, began a volume at 03:53 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 00:00Z, 3.9 hours before the alert went out and 88 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 2009-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 00:00Z on 2009-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 143 square meters per square second.1939587897Sfc1 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
13 J/kg
Mixed-layer CIN
-240 J/kg
Mixed-layer LCL
2434 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
143 m²/s²
0-3 km storm-relative helicity
354 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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
May 7, 11:13 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Graham, Greeley, Jewell and 13 more4 hr
May 8, 12:02 AM CDTSevere Thunderstorm Watch PDSSPCAllen, Anderson, Barber, Barton, Butler, Chase and 53 more8 hr
May 8, 2:50 AM CDTMesoscale DiscussionSPCBarber, Butler, Chase, Clark, Comanche, Edwards and 22 more55 min
May 8, 4:31 AM CDTMesoscale DiscussionSPCAllen, Anderson, Barber, Bourbon, Butler, Chase and 17 more59 min
May 8, 4:55 AM CDTSevere Thunderstorm Watch PDSSPCBourbon, Cherokee, Crawford7 hr
May 8, 7:17 AM CDTMesoscale DiscussionSPCCherokee, Crawford, Labette, Neosho58 min
May 8, 3:42 PM CDTMesoscale DiscussionSPCAtoka, Carter, Coal, Garvin, Haskell, Hughes and 15 more93 min
May 8, 5:52 PM CDTTornado WatchSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 23 more11 hr

Nearby

Mesoscale Discussions in Kansas, 2009Mesoscale Discussions in Oklahoma, 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.