Alert archive / Oklahoma / Mesoscale Discussions in 2017
Mesoscale Discussion 680
The Storm Prediction Center issued this mesoscale discussion at May 10, 2017, 6:04 AM CDT for 4 counties in Kansas; 11 counties in Oklahoma; 4 counties in Texas. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- May 10, 2017, 6:04 AM CDT (11:04 UTC)
- Expired
- May 10, 2017, 8:00 AM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
Counties Barber County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Alfalfa County, OK, Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Grant County, OK, Harper County, OK, Major County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Collingsworth County, TX, Hemphill County, TX, Lipscomb County, TX, Wheeler County, TX
The radar
The Vance AFB radar (KVNX), 127 km from the middle of the area, began a volume at 11:04 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
Dodge City, (KDDC), launched 00:00Z, 11.1 hours before the alert went out and 168 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
- 616 J/kg
- Mixed-layer CIN
- -91 J/kg
- Mixed-layer LCL
- 1750 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
440
ACUS11 KWNS 101105
SWOMCD
SPC MCD 101104
KSZ000-OKZ000-TXZ000-101300-
Mesoscale Discussion 0680
NWS Storm Prediction Center Norman OK
0604 AM CDT Wed May 10 2017
Areas affected...Eastern Texas Panhandle...western Oklahoma and
adjacent southern Kansas
Concerning...Severe Thunderstorm Watch 202...
Valid 101104Z - 101300Z
The severe weather threat for Severe Thunderstorm Watch 202
continues.
SUMMARY...Thunderstorms will continue to spread northeast of the
Texas Panhandle, and across portions of western Oklahoma and
adjacent southern Kansas through mid morning, perhaps accompanied by
some lingering risk for severe hail and wind. Any such threat seems
likely to remain fairly localized and marginal, with an additional
severe weather watch probably not needed. But trends will continue
to be monitored.
DISCUSSION...Perhaps aided by a lingering, but weakening, southerly
850 mb jet (30-40+ kt), lower/mid tropospheric warm advection may
maintain the ongoing cluster of thunderstorms another several hours.
Activity appears generally focused on the northwestern edge of
warmer and more strongly capping elevated mixed layer air, and is
expected to spread northeast of the eastern Texas Panhandle, and
across northwestern Oklahoma and adjacent southern Kansas, through
the 12-15Z time frame.
Although the long-lived discrete supercell near the leading edge of
the activity appears to be in the process of weakening, a period of
re-intensification of thunderstorms may not be entirely out of the
question this morning. If this occurs it probably will remain
rather localized, and focused along a remnant outflow boundary from
now dissipated preceding convection, which extends northeastward
into roughly the I-135/70 vicinity of central Kansas. But, the
environment may be at least marginally conducive of occasional
strong surface gusts and perhaps severe hail.
..Kerr.. 05/10/2017
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ICT...OUN...DDC...LUB...AMA...
LAT...LON 37109993 37889823 37079747 35889871 35209931 34570040
35490045 36440055 37109993SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:15 PM CDT | Mesoscale Discussion | SPC | Cloud, Jewell, Marshall, Mitchell, Osborne, Phillips and 4 more | 2 hr |
| May 9, 9:32 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Finney, Gove, Graham, Grant and 16 more | 58 min |
| May 10, 1:29 AM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Ellis, Gove, Graham, Jewell and 12 more | 61 min |
| May 10, 12:39 PM CDT | Mesoscale Discussion | SPC | Bourbon, Franklin, Johnson, Leavenworth, Linn, Miami and 1 more | 3 hr |
| May 10, 3:11 PM CDT | Mesoscale Discussion | SPC | Grant, Haskell, Morton, Seward, Stevens | 94 min |
| May 10, 3:37 PM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Butler, Chautauqua, Cherokee, Cowley and 10 more | 113 min |
| May 10, 6:30 PM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford | 2 hr |
| May 9, 10:59 PM CDT | Severe Thunderstorm Watch | SPC | Beaver | 8 hr |
| May 10, 2:14 PM CDT | Mesoscale Discussion | SPC | Beckham, Caddo, Canadian, Comanche, Cotton, Custer and 8 more | 61 min |
| May 10, 2:43 PM CDT | Tornado Watch | SPC | Caddo, Comanche, Cotton, Grady, Greer, Harmon and 5 more | 7 hr |
| May 10, 5:27 PM CDT | Severe Thunderstorm Watch | SPC | Beaver, Texas | 3 hr |
| May 10, 5:58 PM CDT | Mesoscale Discussion | SPC | Beckham, Caddo, Comanche, Cotton, Grady, Greer and 5 more | 2 hr |
| May 9, 8:41 PM CDT | Mesoscale Discussion | SPC | Andrews, Bailey, Castro, Cochran, Deaf Smith, Ector and 10 more | 2 hr |
| May 9, 10:17 PM CDT | Mesoscale Discussion | SPC | Andrews, Armstrong, Bailey, Briscoe, Carson, Castro and 19 more | 28 min |
| May 10, 2:04 AM CDT | Mesoscale Discussion | SPC | Andrews, Armstrong, Bailey, Briscoe, Castro, Cochran and 21 more | 86 min |
| May 10, 2:25 PM CDT | Mesoscale Discussion | SPC | Menard, Schleicher, Sutton, Val Verde | 3 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2017Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Texas, 2017Every mesoscale discussion in 2017
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.