Alert archive / Oklahoma / Mesoscale Discussions in 2008
Mesoscale Discussion 1021
The Storm Prediction Center issued this mesoscale discussion at May 25, 2008, 12:17 PM CDT for 4 states. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- May 25, 2008, 12:17 PM CDT (17:17 UTC)
- Expired
- May 25, 2008, 1:15 PM CDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
All 37 counties
Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Sebastian County, AR, Washington County, AR, Cherokee County, KS, Crawford County, KS, Labette County, KS, Barry County, MO, Barton County, MO, Christian County, MO, Dade County, MO, Greene County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Stone County, MO, Taney County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, LeFlore County, OK, Mayes County, OK, Muskogee County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK
The radar
The Western Arkansas radar (KSRX), 109 km from the middle of the area, began a volume at 17:23 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 5.3 hours before the alert went out and 77 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
- 2790 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 480 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 251717 SWOMCD SPC MCD 251717 MOZ000-ARZ000-OKZ000-KSZ000-251815- MESOSCALE DISCUSSION 1021 NWS STORM PREDICTION CENTER NORMAN OK 1217 PM CDT SUN MAY 25 2008 AREAS AFFECTED...NERN OK...NWRN AR...SERN KS...SWRN MO CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE VALID 251717Z - 251815Z THUNDERSTORMS WILL DEVELOP AND INCREASE IN COVERAGE OVER THE NEXT FEW HOURS ACROSS NERN OK...NWRN AR...SERN KS...AND SWRN MO. SOME OF THESE STORMS ARE EXPECTED TO QUICKLY BECOME SEVERE...WITH LARGE HAIL AND DMGG WINDS AS THE PRIMARY THREAT. ISOLATED TORNADOES MAY BE POSSIBLE AS WELL. MCV INVOF CNTRL OK WILL GRADUALLY MOVE NEWD TOWARDS JLN OVER THE NEXT FEW HOURS. TEMPERATURES ARE QUICKLY RISING ACROSS THE OUTLINED AREA AHEAD OF THIS...AND LITTLE CIN IS LEFT TO BE OVERCOME. AS TEMPERATURES CONTINUE TO RISE...MODIFIED 12Z SOUNDINGS INDICATE AS MUCH 4000 J/KG SBCAPE CAN BE REALIZED. STORMS SHOULD INITIATE BOTH AHEAD OF THE MCV AND ALONG A PSEUDO WARM FRONT ORIENTED ROUGHLY N-S ALONG THE KS/MO AND OK/AR BORDERS. STEEP LAPSE RATES AND INCREASING SHEAR WILL SUPPORT BRIEF SUPERCELLULAR STRUCTURES AND MULTICELL CLUSTERS CAPABLE OF PRODUCING LARGE HAIL AND DMGG WINDS. ISOLATED TORNADOES MAY BE POSSIBLE WITH BRIEFLY BACKED FLOW AHEAD OF THE MCV...OR NEAR THE WARM FRONT. ..HURLBUT.. 05/25/2008 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LZK...SGF...TSA...ICT... 35419326 34859471 35709548 36829571 37659496 37739353 36409259 36159273
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 1:13 PM CDT | Tornado Watch | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 10 more | 7 hr |
| May 25, 2:49 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 4 more | 56 min |
| May 25, 6:06 PM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 17 more | 114 min |
| May 25, 6:33 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Clay, Cleburne, Conway, Craighead, Cross and 15 more | 7 hr |
| May 24, 9:34 PM CDT | Mesoscale Discussion | SPC | Chautauqua, Cowley, Elk, Harper, Labette, Montgomery and 2 more | 56 min |
| May 24, 11:33 PM CDT | Tornado Watch | SPC | Barber, Butler, Cowley, Harper, Harvey, Kingman and 5 more | 4 hr |
| May 25, 3:05 AM CDT | Mesoscale Discussion | SPC | Butler, Harvey, Sedgwick, Sumner | 55 min |
| May 25, 11:55 AM CDT | Mesoscale Discussion | SPC | Grant, Haskell, Meade, Morton, Seward, Stevens | 65 min |
| May 25, 12:39 PM CDT | Tornado Watch | SPC | Clark, Edwards, Finney, Ford, Grant, Gray and 15 more | 5 hr |
| May 25, 2:23 PM CDT | Mesoscale Discussion | SPC | Barton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 30 more | 67 min |
| May 25, 3:00 PM CDT | Tornado Watch | SPC | Barber, Barton, Brown, Clay, Cloud, Comanche and 30 more | 6 hr |
| May 25, 5:29 PM CDT | Mesoscale Discussion | SPC | Clark, Comanche, Edwards, Finney, Ford, Grant and 11 more | 61 min |
| May 25, 5:51 PM CDT | Tornado Watch | SPC | Barber, Clark, Comanche, Edwards, Ellis, Finney and 21 more | 7 hr |
| May 25, 12:53 PM CDT | Mesoscale Discussion | SPC | Audrain, Boone, Callaway, Chariton, Cole, Cooper and 29 more | 67 min |
| May 25, 3:30 PM CDT | Tornado Watch | SPC | Clark, Scotland | 5 hr |
| May 25, 3:58 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Audrain, Boone, Callaway, Cole, Cooper and 25 more | 6 hr |
| May 25, 6:39 PM CDT | Mesoscale Discussion | SPC | Audrain, Clark, Franklin, Jefferson, Knox, Lewis and 12 more | 66 min |
| May 24, 8:04 PM CDT | Mesoscale Discussion | SPC | Jackson | 116 min |
| May 24, 8:29 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Caddo, Comanche, Cotton, Custer, Grady and 7 more | 6 hr |
| May 24, 11:00 PM CDT | Mesoscale Discussion | SPC | Comanche, Cotton, Tillman | 60 min |
Nearby
Mesoscale Discussions in Oklahoma, 2008Mesoscale Discussions in Arkansas, 2008Mesoscale Discussions in Missouri, 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.