Alert archive / Kansas / Mesoscale Discussions in 2014
Mesoscale Discussion 577
The Storm Prediction Center issued this mesoscale discussion at May 11, 2014, 11:41 PM CDT for 13 counties in Kansas; 8 counties in Oklahoma; 7 counties in Texas. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- May 11, 2014, 11:41 PM CDT (04:41 UTC)
- Expired
- May 12, 2014, 12:45 AM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 28 counties
Barber County, KS, Chase County, KS, Dickinson County, KS, Geary County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Marion County, KS, McPherson County, KS, Morris County, KS, Reno County, KS, Sedgwick County, KS, Wabaunsee County, KS, Alfalfa County, OK, Beckham County, OK, Dewey County, OK, Ellis County, OK, Major County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Donley County, TX, Hall County, TX, Hemphill County, TX, Wheeler County, TX
The radar
The Vance AFB radar (KVNX), 129 km from the middle of the area, began a volume at 04:43 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
Norman, OK (KOUN), launched 00:00Z, 4.7 hours before the alert went out and 213 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
- 1181 J/kg
- Mixed-layer CIN
- -252 J/kg
- Mixed-layer LCL
- 1444 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
591 ACUS11 KWNS 120442 SWOMCD SPC MCD 120441 KSZ000-OKZ000-TXZ000-120545- MESOSCALE DISCUSSION 0577 NWS STORM PREDICTION CENTER NORMAN OK 1141 PM CDT SUN MAY 11 2014 AREAS AFFECTED...SRN/CNTRL PLAINS CONCERNING...SEVERE THUNDERSTORM WATCH 146...147... VALID 120441Z - 120545Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 146...147...CONTINUES. SUMMARY...SCT STRONG-SEVERE THUNDERSTORMS WILL BE NOTED ALONG SURGING COLD FRONT AS IT PROGRESSES ACROSS KS/NWRN OK/ERN TX PANHANDLE. DISCUSSION...RETREATING DRYLINE INTO SURGING COLD FRONT APPEARS TO BE RESPONSIBLE FOR RECENT RAPID THUNDERSTORM DEVELOPMENT ACROSS THE ERN TX PANHANDLE. IT/S NOT REAL CLEAR HOW FAR SOUTH THIS ACTIVITY WILL DEVELOP ACROSS THE TX SOUTH PLAINS BUT LOW LEVEL CONVERGENCE WILL INCREASE TOWARD LBB OVER THE NEXT FEW HOURS AND CONVECTION COULD EVOLVE. FARTHER NORTH...SCT STRONG STORMS LINGER ALONG THE COLD FRONT FROM KINGMAN COUNTY KS...NEWD TO DICKINSON COUNTY KS. NEW DEVELOPMENT IS LIKELY TO TAKE PLACE ALONG THIS BOUNDARY OVER THE NEXT SEVERAL HOURS AS 40-50KT LLJ IMPINGES ON SURGING COLD FRONT. ..DARROW.. 05/12/2014 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...TOP...ICT...OUN...DDC...LUB...AMA... LAT...LON 34540141 35870036 39319694 38979584 34090052 34540141
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 8:30 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Clay, Cloud, Comanche and 25 more | 90 min |
| May 11, 9:56 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Butler, Chase, Clay, Cowley and 26 more | 6 hr |
| May 12, 2:38 AM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Coffey, Douglas, Franklin, Jefferson and 7 more | 2 hr |
| May 12, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Johnson, Leavenworth, Miami, Wyandotte | 3 hr |
| May 12, 11:52 AM CDT | Mesoscale Discussion | SPC | Cherokee, Labette | 83 min |
| May 11, 7:51 PM CDT | Mesoscale Discussion | SPC | Beckham, Greer, Harmon, Jackson, Kiowa, Roger Mills and 2 more | 54 min |
| May 11, 8:18 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Custer, Dewey, Greer, Harmon and 5 more | 6 hr |
| May 12, 2:12 PM CDT | Mesoscale Discussion | SPC | Delaware, Ottawa | 2 hr |
| May 12, 2:38 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Comal, Dimmit and 17 more | 97 min |
| May 12, 6:08 PM CDT | Mesoscale Discussion | SPC | Burnet, Coryell, Gillespie, Kerr, Kimble, Lampasas and 4 more | 97 min |
Nearby
Mesoscale Discussions in Kansas, 2014Mesoscale Discussions in Oklahoma, 2014Mesoscale Discussions in Texas, 2014Every mesoscale discussion in 2014
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.