Alert archive / Kansas / Mesoscale Discussions in 2009

Mesoscale Discussion 977

June 7, 200916 counties in Kansas; 6 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2009, 4:13 PM CDT for 16 counties in Kansas; 6 counties in Oklahoma. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued
Jun 7, 2009, 4:13 PM CDT (21:13 UTC)
Expired
Jun 7, 2009, 5:15 PM CDT
In force
62 min
Issued by
the Storm Prediction Center
All 22 counties

Barber County, KS, Barton County, KS, Comanche County, KS, Edwards County, KS, Ellsworth County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, McPherson County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Alfalfa County, OK, Dewey County, OK, Grant County, OK, Major County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 103 km from the middle of the area, began a volume at 21:17 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, 9.2 hours before the alert went out and 102 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 2009-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 459 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 2009-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 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
459 J/kg
Mixed-layer CIN
-414 J/kg
Mixed-layer LCL
2197 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
33 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
Jun 6, 9:01 PM CDTSevere Thunderstorm WatchSPCBarton, Brown, Clay, Cloud, Dickinson, Ellsworth and 23 more6 hr
Jun 6, 11:04 PM CDTMesoscale DiscussionSPCBarton, Brown, Clay, Cloud, Dickinson, Ellsworth and 23 more86 min
Jun 6, 11:16 PM CDTSevere Thunderstorm WatchSPCAtchison, Doniphan, Leavenworth, Wyandotte6 hr
Jun 7, 12:44 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 7 more61 min
Jun 7, 4:45 AM CDTMesoscale DiscussionSPCAtchison, Brown, Clay, Dickinson, Doniphan, Geary and 10 more30 min
Jun 7, 2:36 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Douglas, Franklin, Geary and 12 more114 min
Jun 7, 3:30 PM CDTMesoscale DiscussionSPCCheyenne, Sherman, Thomas, Wallace60 min
Jun 7, 3:45 PM CDTTornado WatchSPCAtchison, Brown, Doniphan, Douglas, Geary, Jackson and 14 more7 hr
Jun 7, 5:07 PM CDTSevere Thunderstorm WatchSPCAllen, Anderson, Barber, Barton, Butler, Chase and 39 more7 hr
Jun 7, 5:31 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Graham, Greeley, Logan and 7 more5 hr
Jun 7, 5:44 PM CDTTornado WatchSPCLinn, Miami6 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.