Alert archive / Kansas / Mesoscale Discussions in 2003
Mesoscale Discussion 2183
The Storm Prediction Center issued this mesoscale discussion at Aug 18, 2003, 5:13 PM MDT for Cheyenne County, Kit Carson County, Colorado; 12 counties in Kansas; 10 counties in Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2003, 5:13 PM MDT (23:13 UTC)
- Expired
- Aug 18, 2003, 7:15 PM MDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Cheyenne County, CO, Kit Carson County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Graham County, KS, Logan County, KS, Norton County, KS, Rawlins County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Chase County, NE, Dundy County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Phelps County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 14 km from the middle of the area, began a volume at 23:15 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, 11.2 hours before the alert went out and 151 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
- 2 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1390 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
521 ACUS11 KWNS 182314 SWOMCD SPC MCD 182313 NEZ000-KSZ000-COZ000-190115- MESOSCALE DISCUSSION 2183 NWS STORM PREDICTION CENTER NORMAN OK 0613 PM CDT MON AUG 18 2003 AREAS AFFECTED...EXTREME ERN CO...SWRN NEBRASKA...NWRN KS CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 182313Z - 190115Z GIVEN CURRENT CONVECTIVE TRENDS...AN ADDITIONAL WW IS NOT ANTICIPATED E OF WW 869. COMPLEX OF THUNDERSTORMS OVER NERN CO HAS DEVELOPED COLD POOL AND WILL CONTINUE EWD. ISOLATED STRONG CELL HAS MAINTAINED ITSELF OVER THE PAST COUPLE HOURS AND THIS IS EXPECTED TO CONTINUE AS IT MOVES EWD WITH LARGE HAIL AND DAMAGING WIND POSSIBLE. ONLY A SLIGHT INCREASE IN INTENSITY IS ANTICIPATED AS SYSTEM INGESTS INCREASINGLY MOIST INFLOW OVER WRN KS AND SWRN NEB...WHERE MIXING RATIOS ARE SLIGHTLY HIGHER. INCREASING SSWLY LLJ MAY INDUCE BACKBUILDING ALONG SRN OUTFLOW OF CONVECTIVE SYSTEM...BUT WEAKER WIND SPEEDS ALOFT WILL BE ENCOUNTERED AS IT CONTINUES EWD WHICH WOULD WORK AGAINST ORGANIZATION. ..JEWELL.. 08/18/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...GID...LBF...DDC...GLD...PUB...BOU... 38500304 39590246 40660201 40629896 38719984
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 1:40 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Cheyenne, Denver, Elbert, El Paso and 7 more | 2 hr |
| Aug 18, 1:55 PM MDT | Severe Thunderstorm Watch | SPC | Adams, Arapahoe, Bent, Boulder, Broomfield, Cheyenne and 25 more | 5 hr |
| Aug 18, 12:24 PM MDT | Mesoscale Discussion | SPC | Jewell, Republic, Smith | 2 hr |
| Aug 18, 1:05 PM MDT | Severe Thunderstorm Watch | SPC | Barton, Butler, Chase, Clay, Cloud, Dickinson and 27 more | 5 hr |
Nearby
Mesoscale Discussions in Kansas, 2003Mesoscale Discussions in Nebraska, 2003Mesoscale Discussions in Colorado, 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.