Alert archive / Kansas / Mesoscale Discussions in 2008
Mesoscale Discussion 976
The Storm Prediction Center issued this mesoscale discussion at May 22, 2008, 6:46 PM CDT for 4 states. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- May 22, 2008, 6:46 PM CDT (23:46 UTC)
- Expired
- May 22, 2008, 7:45 PM CDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 100 counties
Barber County, KS, Barton County, KS, Cheyenne County, KS, Clark County, KS, Comanche County, KS, Decatur County, KS, Edwards County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Gray County, KS, Greeley County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Pawnee County, KS, Phillips County, KS, Pratt County, KS, Rawlins County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Stafford County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Buffalo County, NE, Chase County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Kearney County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE, Phelps County, NE, Red Willow County, NE, Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Dodge City radar (KDDC), 60 km from the middle of the area, began a volume at 23:47 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, 11.8 hours before the alert went out and 59 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.
- Mixed-layer CAPE
- 1191 J/kg
- Mixed-layer CIN
- -320 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 222346 SWOMCD SPC MCD 222346 OKZ000-KSZ000-TXZ000-NEZ000-COZ000-230045- MESOSCALE DISCUSSION 0976 NWS STORM PREDICTION CENTER NORMAN OK 0646 PM CDT THU MAY 22 2008 AREAS AFFECTED...NEB...KS...OK...TX CONCERNING...TORNADO WATCH 335...336...337... VALID 222346Z - 230045Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 335...336...337...CONTINUES. LATE AFTERNOON/EARLY EVENING SURFACE ANALYSIS SHOWED AN AREA OF LOW PRESSURE LOCATED OVER NORTH CENTRAL CO WITH A WARM FRONT EXTENDING ESEWD ACROSS NWRN KS THROUGH NRN KS TO CENTRAL MO. DRY LINE...AIDED BY STRONG SSWLY GRADIENT WINDS...HAD SHIFTED EWD INTO NERN CO AT INTERSECTION WITH WARM FRONT AND THEN EXTENDED SWD THROUGH WRN KS TO THE ERN TX PANHANDLE. ...WW/S 335 AND 337... MOIST/MODERATELY UNSTABLE WARM SECTOR COMBINED WITH 40-60 KT OF SWLY EFFECTIVE BULK SHEAR VECTORS REMAINS CONDUCIVE FOR TORNADIC SUPERCELLS THROUGH THE EARLY EVENING. LATEST OBJECTIVE ANALYSES INDICATED VERY STRONG EFFECTIVE SRH VALUES /300-600 M2/S2/ EXTENDING FROM NWRN KS THROUGH SWRN NEB TO NERN CO...ALONG NOSE OF 40 KT SSELY LLJ...AND BACKED LOWER LEVEL WINDS IN VICINITY OF THE WARM FRONT. THIS WILL SUPPORT A CONTINUED TORNADO THREAT ACROSS MUCH OF WW 335 AND 337...INCLUDING THOSE REGIONS JUST N OF THE WARM FRONT WHERE EFFECTIVE PARCELS REMAIN SURFACE BASED. ...WW 336... ASCENT ATTENDANT TO SRN EXTENT OF SHORT WAVE TROUGH...NOW CENTERED OVER THE CENTRAL HIGH PLAINS OF NERN CO/WRN NEB...WILL CONTINUE TO SUPPORT TSTM DEVELOPMENT ALONG THE SRN EXTENT OF THE DRY LINE. MODERATE-STRONG INSTABILITY COMBINED WITH EFFECTIVE BULK SHEAR OF 40-50 KT AND EFFECTIVE SRH VALUES OF 100-200 M2/S2 REMAIN VERY FAVORABLE FOR TORNADIC SUPERCELLS ACROSS FAR ERN TX PANHANDLE INTO WRN OK. PARTICULAR CONCERN EXISTS WITH THE DEVIANT MOVING /EWD STORM MOTION/ OF THE SUPERCELL NOW LOCATED OVER ROGER MILLS COUNTY WHERE PARAMETERS ARE VERY FAVORABLE FOR TORNADOES. FARTHER S OF THE ROGER MILLS SUPERCELL...WEAKER ASCENT WITH SWD EXTENT ALONG VORTICITY LOBE APPEARS TO BE LIMITING CONVECTIVE DEVELOPMENT INTO NW TX AT THIS TIME. IF THIS TREND CONTINUES...SRN PARTS OF WW 336 MAY BE CANCELLED PRIOR TO WATCH EXPIRATION OF 03Z. ..PETERS.. 05/22/2008 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...ICT...OUN...GID...LBF...DDC...GLD...LUB...AMA...PUB...BOU... 41020019 41059870 39109852 38749899 38209850 36989827 36149809 33479801 33400054 34480099 37750115 38290207 40390204 41390210 41370026
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:17 PM CDT | Mesoscale Discussion | SPC | Grant, Haskell, Meade, Morton, Seward, Stanton and 1 more | 118 min |
| May 22, 3:38 AM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Douglas, Franklin, Jackson and 12 more | 97 min |
| May 22, 1:29 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Clark, Comanche, Decatur, Finney, Ford and 16 more | 61 min |
| May 22, 1:52 PM CDT | Tornado Watch | SPC | Barber, Cheyenne, Clark, Comanche, Decatur, Edwards and 33 more | 10 hr |
| May 22, 4:02 PM CDT | Mesoscale Discussion | SPC | Barber, Cheyenne, Clark, Comanche, Decatur, Edwards and 31 more | 58 min |
| May 21, 8:40 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Dawes, Deuel, Kimball and 3 more | 65 min |
| May 21, 10:35 PM CDT | Mesoscale Discussion | SPC | Banner, Cheyenne, Kimball, Morrill, Scotts Bluff | 25 min |
| May 22, 12:25 PM CDT | Tornado Watch | SPC | Cheyenne, Kimball | 9 hr |
| May 22, 2:29 PM CDT | Mesoscale Discussion | SPC | Arthur, Banner, Box Butte, Cheyenne, Deuel, Frontier and 9 more | 61 min |
| May 22, 3:13 PM CDT | Tornado Watch | SPC | Chase, Deuel, Frontier, Hayes, Keith, Lincoln and 1 more | 7 hr |
| May 22, 3:22 PM CDT | Severe Thunderstorm Watch | SPC | Arthur, Banner, Blaine, Box Butte, Brown, Cherry and 15 more | 7 hr |
| May 22, 2:28 PM CDT | Tornado Watch | SPC | Alfalfa, Beaver, Beckham, Blaine, Caddo, Comanche and 15 more | 7 hr |
| May 22, 5:18 PM CDT | Mesoscale Discussion | SPC | Haskell, Latimer, LeFlore, McCurtain, Pushmataha, Sequoyah | 57 min |
Nearby
Mesoscale Discussions in Kansas, 2008Mesoscale Discussions in Oklahoma, 2008Mesoscale Discussions in Texas, 2008Every mesoscale discussion in 2008
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.