Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 813
The Storm Prediction Center issued this mesoscale discussion at May 19, 2011, 1:24 PM MDT for 9 counties in Colorado; 13 counties in Kansas. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- May 19, 2011, 1:24 PM MDT (19:24 UTC)
- Expired
- May 19, 2011, 2:30 PM MDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
All 22 counties
Cheyenne County, CO, Crowley County, CO, El Paso County, CO, Elbert County, CO, Kiowa County, CO, Kit Carson County, CO, Lincoln County, CO, Otero County, CO, Pueblo County, CO, Finney County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Scott County, KS, Seward County, KS, Sherman County, KS, Stanton County, KS, Stevens County, KS, Wallace County, KS, Wichita County, KS
The radar
The Pueblo radar (KPUX), 127 km from the middle of the area, began a volume at 19:28 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
Denver, CO (KDNR), launched 12:00Z, 7.4 hours before the alert went out and 188 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 522 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
118
ACUS11 KWNS 191924
SWOMCD
SPC MCD 191924
KSZ000-COZ000-192030-
MESOSCALE DISCUSSION 0813
NWS STORM PREDICTION CENTER NORMAN OK
0224 PM CDT THU MAY 19 2011
AREAS AFFECTED...SERN/E-CNTRL CO...SWRN KS
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 191924Z - 192030Z
THE POTENTIAL MAY EXIST FOR A FEW STORMS PRODUCING HAIL /SOME
POSSIBLY APPROACHING SVR LIMITS/ ACROSS PORTIONS OF SERN/E-CNTRL CO
AND INTO FAR SWRN KS. DUE TO THE EXPECTED MARGINAL NATURE OF THE
THREAT...A WW IS NOT ANTICIPATED.
RECENT RADAR TRENDS INDICATE THAT A FEW SMALL/LOW-TOPPED
THUNDERSTORMS HAVE DEVELOPED OVER THE HIGH PLAINS OF SERN CO. THESE
STORMS HAVE LIKELY FORMED IN RESPONSE TO INCREASING MIDLEVEL ASCENT
ASSOCIATED WITH A LARGE-SCALE WRN CONUS UPPER TROUGH. A RESERVOIR OF
RELATIVELY MOIST BOUNDARY LAYER AIR IS BEING MAINTAINED AS SFC
PRESSURE FALLS HAVE OCCURRED IN THE LEE OF THE FRONT RANGE...EWD
ACROSS E-CNTRL CO AND BACK INTO SWRN KS. ALTHOUGH TEMPERATURES ARE
SOMEWHAT COOL FARTHER W /50-60S/...MIDLEVEL LAPSE RATES AROUND 7 DEG
C/KM WILL BE SUFFICIENT TO YIELD MLCAPE VALUES BETWEEN 250-500
J/KG...WITH SOME POTENTIAL FOR MARGINALLY SVR HAIL WITH THE
STRONGEST STORMS. FARTHER E ACROSS SWRN KS...THE THREAT REMAINS MORE
CONDITIONAL AS CONVECTION HAS STRUGGLED TO INITIATE...BUT IF STORMS
DEVELOP THEN THE POTENTIAL FOR HAIL AND PERHAPS GUSTY DOWNBURST
WINDS /OWING TO A WARMER BOUNDARY LAYER AND GREATER DEWPOINT
DEPRESSIONS/ MAY EXIST.
..ROGERS.. 05/19/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DDC...GLD...PUB...BOU...
LAT...LON 38030226 37930331 37770454 38020518 38870511 39200460
39400385 39420256 39370156 38280074 37100071 37030106
37130166 37730193 38030226SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 6:36 PM MDT | Mesoscale Discussion | SPC | Bent, Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln | 54 min |
| May 18, 9:25 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Kiowa, Kit Carson, Lincoln, Prowers | 2 hr |
| May 19, 12:12 PM MDT | Mesoscale Discussion | SPC | Barber, Barton, Butler, Comanche, Cowley, Dickinson and 26 more | 63 min |
| May 19, 12:43 PM MDT | Tornado Watch | SPC | Barber, Barton, Butler, Chase, Clark, Clay and 43 more | 7 hr |
| May 19, 2:44 PM MDT | Mesoscale Discussion | SPC | Barber, Barton, Butler, Clark, Clay, Cloud and 40 more | 61 min |
| May 19, 4:42 PM MDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Clay, Cloud, Comanche and 37 more | 2 hr |
| May 19, 5:38 PM MDT | Mesoscale Discussion | SPC | Marshall, Nemaha, Washington | 97 min |
Nearby
Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Colorado, 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.