Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 2008
The Storm Prediction Center issued this mesoscale discussion at Aug 18, 2011, 5:26 PM CDT for 12 counties in Kansas. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2011, 5:26 PM CDT (22:26 UTC)
- Expired
- Aug 18, 2011, 6:30 PM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
Counties Barton County, KS, Edwards County, KS, Ellis County, KS, Ellsworth County, KS, Lincoln County, KS, Ness County, KS, Pawnee County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Stafford County, KS
The radar
The Dodge City radar (KDDC), 110 km from the middle of the area, began a volume at 22:27 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 12:00Z, 10.4 hours before the alert went out and 105 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
- 1581 J/kg
- Mixed-layer CIN
- -224 J/kg
- Mixed-layer LCL
- 1671 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
152
ACUS11 KWNS 182226
SWOMCD
SPC MCD 182226
KSZ000-182330-
MESOSCALE DISCUSSION 2008
NWS STORM PREDICTION CENTER NORMAN OK
0526 PM CDT THU AUG 18 2011
AREAS AFFECTED...W-CNTRL KS
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 182226Z - 182330Z
THE POTENTIAL FOR ISOLD TSTMS IS INCREASING ACROSS W-CNTRL KS. AN
ATTENDANT THREAT FOR AN ISOLD SEVERE WIND GUST OR TWO/LARGE HAIL
WILL PROBABLY ACCOMPANY THE STRONGER STORMS. PROBABILITY OF A WW
ISSUANCE...20 PERCENT.
LATEST SUBJECTIVE SURFACE ANALYSIS PLACES A REMNANT STATIONARY FRONT
DRAPED FROM SERN KS NNWWD INTO N-CNTRL NEB. A RICH MOISTURE
RESERVOIR IS LOCATED PRIMARILY ALONG AND E OF THIS BOUNDARY ACROSS
THE LOW PLAINS. FARTHER W...WEAK LOW LEVEL CONFLUENCE ASSOCIATED
WITH A SURFACE TROUGH/DRYLINE FEATURE EXTENDS SWD FROM THE NRN
PLAINS SURFACE LOW INTO WRN KS AND INTO SERN CO. THE AREA IN
BETWEEN THE TWO BOUNDARIES HAS HEATED CONSIDERABLY TODAY WITHIN A
THERMAL RIDGE WITH TEMPS RISING AOA 100 DEG F AND DEWPOINTS MIXING
INTO THE 50S AND LOWER 60S. ALTHOUGH LARGE SCALE FORCING FOR ASCENT
APPEARS NEGLIGIBLE/ABSENT...A STRONG UPPER LEVEL SPEED MAXIMA
LOCATED TO THE N HAS INCREASED SHEAR PROFILES ACROSS THE REGION. AS
SUCH...SOME STORM ORGANIZATION IN THE FORM OF AN ISOLD MULTICELLULAR
CLUSTER/MARGINAL SUPERCELL STRUCTURE MAY DEVELOP--WITH STRONG-SEVERE
WIND GUSTS/LARGE HAIL POSSIBLE WITH THE MORE ROBUST UPDRAFTS.
HOWEVER...STORM COVERAGE IS EXPECTED TO REMAIN RATHER ISOLD...LIKELY
PRECLUDING THE NEED FOR A WW.
..SMITH.. 08/18/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ICT...GID...DDC...GLD...
LAT...LON 37929972 38540025 39369935 39329808 38129766 37799851
37929972SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 7:19 PM CDT | Mesoscale Discussion | SPC | Morton, Stanton | 56 min |
| Aug 17, 9:18 PM CDT | Mesoscale Discussion | SPC | Cheyenne | 57 min |
| Aug 18, 6:00 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 5 more | 60 min |
Nearby
Mesoscale Discussions in Kansas, 2011Every mesoscale discussion in 2011
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.