Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 2020
The Storm Prediction Center issued this mesoscale discussion at Aug 19, 2011, 3:42 PM CDT for 32 counties in Kansas. It was in force for 63 min.
The area
The outline as issued.
The facts
- Issued
- Aug 19, 2011, 3:42 PM CDT (20:42 UTC)
- Expired
- Aug 19, 2011, 4:45 PM CDT
- In force
- 63 min
- Issued by
- the Storm Prediction Center
All 32 counties
Barton County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Ness County, KS, Pawnee County, KS, Pratt County, KS, Rush County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Stafford County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS
The radar
The Dodge City radar (KDDC), 36 km from the middle of the area, began a volume at 20:41 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, 8.7 hours before the alert went out and 38 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
- 41 J/kg
- Mixed-layer CIN
- -379 J/kg
- Mixed-layer LCL
- 3087 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -41 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
090
ACUS11 KWNS 192043
SWOMCD
SPC MCD 192042
KSZ000-COZ000-192145-
MESOSCALE DISCUSSION 2020
NWS STORM PREDICTION CENTER NORMAN OK
0342 PM CDT FRI AUG 19 2011
AREAS AFFECTED...WRN KS
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 192042Z - 192145Z
THE POTENTIAL FOR DMGG WIND GUSTS AND HAIL WILL INCREASE THIS
AFTERNOON ACROSS PORTIONS OF WRN KS. A WW IS NOT CURRENTLY
ANTICIPATED...BUT CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED.
CONVECTION HAS INCREASED THIS AFTERNOON ACROSS PORTIONS OF THE OK
PANHANDLE AND FAR SWRN KS IN RESPONSE TO AN UPPER IMPULSE OVER FAR
SERN CO. STRONG BOUNDARY LAYER HEATING HAS RESULTED IN TEMPERATURES
CLIMBING INTO THE LOW 100S...WITH A SUBSEQUENT STEEPENING OF
LOW-LEVEL LAPSE RATES AND SFC T-TD SPREADS EXCEEDING 50 DEG F. STEEP
MIDLEVEL LAPSE RATES /NEAR 8 DEG C PER KM/ WITHIN AN EML PLUME ALONG
WITH STRONG BOUNDARY LAYER HEATING HAS RESULTED IN MLCAPE VALUES
BETWEEN 1000-1500 J/KG. THE PRIMARY HAZARD IS EXPECTED TO BE DMGG
DOWNBURST WIND GUSTS /PRIMARILY VIA EVAPORATIVE COOLING/...WITH ANY
THREAT EXPECTED TO REMAIN ISOLATED OVER THE NEXT 1-2 HRS DUE TO WEAK
DEEP-LAYER FLOW/EFFECTIVE SHEAR FAVORING PULSE CONVECTION.
HOWEVER...SHOULD A COLD POOL CONSOLIDATE AND SPREAD NWD...A MORE
WIDESPREAD THREAT OF DMGG WIND GUSTS COULD MATERIALIZE.
ADDITIONALLY...GIVEN THE PRESENCE OF STEEP MIDLEVEL LAPSE
RATES...THE POTENTIAL FOR HAIL MAY ALSO ACCOMPANY THE STRONGEST
CORES.
WITH TIME...MEAN STEERING FLOW OUT OF THE S-SW WILL EVENTUALLY SHIFT
PRIMARY FOCUS FOR CONVECTION INTO W-CNTRL/NWRN KS...WHERE RICHER
BOUNDARY LAYER MOISTURE/GREATER POTENTIAL INSTABILITY IS IN PLACE.
ADDITIONALLY...A QUASI-STATIONARY LOW-LEVEL BAROCLINIC ZONE
/ANALYZED AT THE SFC FROM 25 SW GLD TO 20 NW RSL/ MAY SERVE AS AN
ADDITIONAL FOCUS FOR INCREASING TSTM COVERAGE LATER THIS AFTERNOON.
..ROGERS.. 08/19/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...ICT...GID...DDC...GLD...PUB...
LAT...LON 37189908 37049970 37020023 37350136 37930190 38570208
39380203 39710150 39540008 39059910 38219854 37529837
37269847 37189908SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 8:09 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Coffey, Doniphan, Douglas and 18 more | 7 hr |
| Aug 18, 9:52 PM CDT | Mesoscale Discussion | SPC | Brown, Doniphan | 53 min |
| Aug 18, 11:46 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Chase and 28 more | 59 min |
| Aug 19, 12:02 AM CDT | Severe Thunderstorm Watch | SPC | Allen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 3 more | 5 hr |
| Aug 19, 1:38 AM CDT | Mesoscale Discussion | SPC | Allen, Bourbon, Cherokee, Crawford, Labette, Montgomery and 2 more | 67 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.