Alert archive / Kansas / Mesoscale Discussions in 2004

Mesoscale Discussion 657

May 11, 200416 counties in Kansas; 5 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at May 11, 2004, 5:20 PM CDT for 16 counties in Kansas; 5 counties in Nebraska. It was in force for 115 min.

The area

The outline as issued.

The facts

Issued: May 11, 2004, 5:20 PM CDT (22:20 UTC)
Expired: May 11, 2004, 7:15 PM CDT
In force: 115 min
Issued by: the Storm Prediction Center

All 21 counties

Decatur County, KS, Finney County, KS, Gove County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Rawlins County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Stevens County, KS, Thomas County, KS, Wichita County, KS, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Lincoln County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 54 km from the middle of the area, began a volume at 22:23 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 nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.3 hours before the alert went out and 196 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2914 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 190 m²/s²
0-3 km storm-relative helicity: 287 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.

960 
ACUS11 KWNS 112221
SWOMCD
SPC MCD 112220 
NEZ000-KSZ000-OKZ000-120015-

MESOSCALE DISCUSSION 0657
NWS STORM PREDICTION CENTER NORMAN OK
0520 PM CDT TUE MAY 11 2004

AREAS AFFECTED...SW NEB/WRN KS

CONCERNING...TORNADO WATCH 185...

VALID 112220Z - 120015Z

CONTINUE WW.

LOW-LEVEL CONVERGENCE IS STILL WEAK ALONG DRY LINE VICINITY OF THE
EASTERN COLORADO/KANSAS/NEBRASKA BORDER AREA...BUT CONVECTIVE
INITIATION IS ONGOING IN RESPONSE TO DAYTIME HEATING.  WEAKLY CAPPED
ENVIRONMENT WITH MEAN MIXED LAYER CAPE IN EXCESS OF 2000 J/KG WILL
SUPPORT MORE INTENSE CONVECTION WITHIN THE NEXT COUPLE OF HOURS. 
ISOLATED SUPERCELLS ARE POSSIBLE...WITH ENHANCED RISK OF LARGE HAIL
AND DAMAGING WIND GUSTS.  MODELS SUGGEST MID-LEVEL FLOW MAY BEGIN TO
VEER FROM SOUTHERLY TO WESTERLY AFTER 12/00Z...WHICH WOULD SUPPORT
MORE FAVORABLE HODOGRAPHS FOR UPDRAFT ROTATION...AND INCREASING
POTENTIAL FOR ISOLATED TORNADOES.

..KERR.. 05/11/2004

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...GID...LBF...DDC...GLD...AMA...

41080136 41430094 40970018 39020036 37410024 36960125
37340176 38090178 39290163

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 10, 7:07 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Finney, Gove, Grant, Gray, Greeley and 17 more	2 hr
May 10, 7:15 PM CDT	Severe Thunderstorm Watch	SPC	Cheyenne, Decatur, Finney, Ford, Gove, Graham and 24 more	5 hr
May 10, 9:34 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Clark, Decatur, Finney, Ford, Gove and 18 more	86 min
May 10, 10:45 PM CDT	Severe Thunderstorm Watch	SPC	Decatur, Norton	4 hr
May 11, 2:00 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Grant, Greeley, Hamilton, Kearny, Logan and 8 more	2 hr
May 11, 2:40 PM CDT	Tornado Watch	SPC	Cheyenne, Decatur, Finney, Gove, Grant, Gray and 19 more	6 hr
May 10, 8:06 PM CDT	Mesoscale Discussion	SPC	Banner, Box Butte, Cheyenne, Dawes, Deuel, Garden and 5 more	114 min
May 10, 8:30 PM CDT	Severe Thunderstorm Watch	SPC	Banner, Kimball, Scotts Bluff	5 hr
May 10, 10:19 PM CDT	Mesoscale Discussion	SPC	Banner, Scotts Bluff, Sioux	116 min
May 11, 1:27 AM CDT	Mesoscale Discussion	SPC	Arthur, Brown, Cherry, Grant, Hooker, Keya Paha and 3 more	63 min
May 11, 1:32 PM CDT	Mesoscale Discussion	SPC	Cherry, Dawes, Sheridan	118 min
May 11, 1:55 PM CDT	Severe Thunderstorm Watch	SPC	Arthur, Cherry, Garden, Grant, Hooker, Keith and 4 more	5 hr
May 11, 5:04 PM CDT	Mesoscale Discussion	SPC	Cherry, Grant, Hooker, Keya Paha	116 min
May 11, 6:40 PM CDT	Severe Thunderstorm Watch	SPC	Antelope, Blaine, Boyd, Brown, Holt, Keya Paha and 5 more	6 hr

Nearby

Mesoscale Discussions in Kansas, 2004 Mesoscale Discussions in Nebraska, 2004 Every mesoscale discussion in 2004

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.