Alert archive / Kansas / Mesoscale Discussions in 2018
Mesoscale Discussion 971
The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2018, 11:51 PM CDT for 20 counties in Kansas. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2018, 11:51 PM CDT (04:51 UTC)
- Expired
- Jul 1, 2018, 1:15 AM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
Counties Barton County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellsworth County, KS, Geary County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Osborne County, KS, Ottawa County, KS, Pawnee County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Rush County, KS, Russell County, KS, Saline County, KS, Washington County, KS
The radar
The Wichita radar (KICT), 155 km from the middle of the area, began a volume at 04:50 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, 4.9 hours before the alert went out and 204 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
- 1742 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1867 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.6
The text
As transmitted.
390
ACUS11 KWNS 010451
SWOMCD
SPC MCD 010451
KSZ000-NEZ000-010615-
Mesoscale Discussion 0971
NWS Storm Prediction Center Norman OK
1151 PM CDT Sat Jun 30 2018
Areas affected...Portions of central/northeast Kansas
Concerning...Severe Thunderstorm Watch 251...
Valid 010451Z - 010615Z
The severe weather threat for Severe Thunderstorm Watch 251
continues.
SUMMARY...While there is a residual threat for a few damaging gusts,
storms should weaken over the next few hours, reducing the severe
threat.
DISCUSSION...A small line of strong/severe storms is moving
east/southeast around 40-45 kt this evening. Despite increasing
convective inhibition with eastward extent, strong forced ascent
along the cold pool is sustaining robust convection within the line,
and damaging/severe gusts have occurred intermittently with the
line. Still, stable air with eastward extent, as well as weaker
storm-relative inflow, should lead to a downward intensity trend
over then next several hours. While a localized severe threat may
continue through about 06Z, new watch issuance is not expected.
..Picca.. 07/01/2018
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OAX...TOP...ICT...GID...DDC...
LAT...LON 38349973 40149810 40069648 39179632 38479736 38109903
38349973SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 8:18 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Ellis, Gove, Graham, Lane and 12 more | 117 min |
| Jun 30, 8:55 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Clay, Doniphan, Douglas, Jackson and 14 more | 95 min |
Nearby
Mesoscale Discussions in Kansas, 2018Every mesoscale discussion in 2018
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.