Alert archive / Kansas / Mesoscale Discussions in 2012
Mesoscale Discussion 601
The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2012, 3:43 AM MDT for Cheyenne County, Kit Carson County, Yuma County, Colorado; 14 counties in Kansas. It was in force for 32 min.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2012, 3:43 AM MDT (09:43 UTC)
- Expired
- Apr 27, 2012, 4:15 AM MDT
- In force
- 32 min
- Issued by
- the Storm Prediction Center
Counties Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Grant County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Logan County, KS, Morton County, KS, Sherman County, KS, Stanton County, KS, Stevens County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS
The radar
The Goodland radar (KGLD), 104 km from the middle of the area, began a volume at 09:44 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 00:00Z, 9.7 hours before the alert went out and 189 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
- 95 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 2538 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
890
ACUS11 KWNS 270944
SWOMCD
SPC MCD 270943
KSZ000-OKZ000-NEZ000-COZ000-271015-
MESOSCALE DISCUSSION 0601
NWS STORM PREDICTION CENTER NORMAN OK
0443 AM CDT FRI APR 27 2012
AREAS AFFECTED...E CENTRAL CO/WRN KS
CONCERNING...SEVERE THUNDERSTORM WATCH 193...
VALID 270943Z - 271015Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 193
CONTINUES.
RADAR LOOP CONTINUES TO SHOW STORMS SHIFTING NNEWD...AWAY FROM THE
AXIS OF GREATER INSTABILITY. WHILE SOME EWD DESTABILIZATION WILL BE
POSSIBLY AS LOW-LEVEL FLOW VEERS TO A MORE SLY DIRECTION...NNEWD
STORM MOTION CONTINUES TO SHIFT CONVECTION INTO A MORE STABLE
AIRMASS OVER NWRN KS/NERN CO/SERN NEB MORE RAPIDLY THAN ADVECTION
CAN MODIFY THE ENVIRONMENT. THUS...THREAT SHOULD CONTINUE TO
DIMINISH WITH ONGOING STORMS.
GREATEST POTENTIAL FOR RENEWED SEVERE THREAT APPEARS ATTM TO EXIST
ACROSS SWRN KS...WHERE MORE APPRECIABLE AIRMASS MODIFICATION IS
OCCURRING. WHILE THIS AREA WILL NEED TO BE MONITORED...ATTM EXPECT
ACTIVE CONVECTION TO REMAIN N OF THIS REGION OVER THE NEXT FEW HOURS
-- AND THUS NEW WW IS NOT ANTICIPATED ATTM.
..GOSS.. 04/27/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DDC...GLD...AMA...PUB...BOU...
LAT...LON 36970202 38190224 38760285 39190357 40100249 40080179
39650112 37610079 37060118 36970202SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 8:41 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Baca, Bent, Broomfield, Cheyenne and 21 more | 2 hr |
| Apr 26, 9:00 PM MDT | Severe Thunderstorm Watch | SPC | Baca, Bent, Cheyenne, Crowley, Elbert, Kiowa and 11 more | 7 hr |
| Apr 27, 1:24 AM MDT | Mesoscale Discussion | SPC | Baca, Bent, Cheyenne, Crowley, Kiowa, Kit Carson and 7 more | 2 hr |
| Apr 27, 5:16 AM MDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chase, Coffey and 22 more | 59 min |
| Apr 27, 9:15 AM MDT | Mesoscale Discussion | SPC | Barber, Barton, Butler, Cowley, Dickinson, Ellis and 21 more | 2 hr |
| Apr 27, 12:29 PM MDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 34 more | 91 min |
| Apr 27, 1:11 PM MDT | Tornado Watch | SPC | Allen, Anderson, Bourbon, Butler, Chase, Chautauqua and 46 more | 7 hr |
| Apr 27, 2:44 PM MDT | Mesoscale Discussion | SPC | Allen, Anderson, Butler, Chase, Chautauqua, Clay and 22 more | 61 min |
| Apr 27, 5:07 PM MDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Cherokee and 32 more | 113 min |
Nearby
Mesoscale Discussions in Kansas, 2012Mesoscale Discussions in Colorado, 2012Every mesoscale discussion in 2012
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.