Alert archive / Kansas / Mesoscale Discussions in 2003
Mesoscale Discussion 541
The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2003, 11:10 AM MDT for 5 counties in Colorado; 8 counties in Kansas; Dundy County, Nebraska. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2003, 11:10 AM MDT (17:10 UTC)
- Expired
- Apr 23, 2003, 2:15 PM MDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
Counties Adams County, CO, Kit Carson County, CO, Morgan County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Greeley County, KS, Logan County, KS, Rawlins County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE
The radar
The Goodland radar (KGLD), 49 km from the middle of the area, began a volume at 17:12 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, 5.2 hours before the alert went out and 106 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
- 333 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 791 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -102 m²/s²
- 0-3 km storm-relative helicity
- -35 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
027 ACUS11 KWNS 231710 SWOMCD SPC MCD 231710 KSZ000-NEZ000-COZ000-232015- MESOSCALE DISCUSSION 0541 NWS STORM PREDICTION CENTER NORMAN OK 1210 PM CDT WED APR 23 2003 AREAS AFFECTED...NERN CO...NWRN KS...AND FAR SWRN NEB CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 231710Z - 232015Z POTENTIAL EXISTS FOR LOW-TOPPED SUPERCELL THUNDERSTORMS WITH HAIL AND WEAK TORNADOES THIS AFTERNOON. REGION WILL BE MONITORED FOR POSSIBLE WW DURING THE NEXT 1-3 HOURS. AT 23/17Z...A DRY SURFACE TROUGH EXTENDS FROM A 992MB SURFACE LOW NEAR DEN SEWD ACROSS E-CENTRAL AND FAR SERN CO. A MOIST SELY LOW-LEVEL FLOW TO THE NORTH OF THIS BOUNDARY WILL ADVECT DEWPOINTS TO NEAR 50 ACROSS THE DISCUSSION AREA EARLY THIS AFTERNOON. ALOFT... A DRY SLOT EVIDENT ON SATELLITE IMAGERY ACROSS NERN NM/SERN CO WILL SPREAD NEWD IN ADVANCE OF THE UPPER LOW CENTER...BRINGING STEEPENING MID-LEVEL LAPSE RATES AND THE POTENTIAL FOR INCREASED INSOLATION TO NERN CO...NWRN KS...AND FAR SWRN NEB DURING THE NEXT FEW HOURS. WITH 500MB TEMPERATURES COOLING TO -18C TO -20C...POTENTIAL EXISTS FOR MUCAPE VALUES OF 500-1500 J/KG BY 23/21Z ACROSS NERN CO/NWRN KS/SWRN NEB. EXISTING STORMS ACROSS E-CENTRAL CO WILL LIKELY PIVOT COUNTERCLOCKWISE AND INCREASE IN INTENSITY THIS AFTERNOON WITH POTENTIAL FOR NEW DEVELOPMENT ON THE SERN FLANK. STRONG LOW-LEVEL SHEAR SHOULD CONTINUE IN VICINITY OF THIS ACTIVITY...AND NORTH OF THE SURFACE TROUGH AS IT PIVOTS NEWD. POTENTIAL EXISTS FOR LOW-TOPPED SUPERCELLS WITH HAIL /WBZ HEIGHTS 4-5 KFT/ AND POSSIBLE TORNADOES AS DESTABLIZATION TAKES PLACE THIS AFTERNOON. ..BANACOS.. 04/23/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LBF...DDC...GLD...PUB...BOU... 37890111 39400072 40380133 40750373 39900453 39340335 38700221
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 8:55 AM MDT | Mesoscale Discussion | SPC | Barber, Barton, Butler, Cowley, Edwards, Ellsworth and 13 more | 65 min |
Nearby
Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Colorado, 2003Mesoscale Discussions in Nebraska, 2003Every mesoscale discussion in 2003
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.