Alert archive / Kansas / Mesoscale Discussions in 2003
Mesoscale Discussion 4
The Storm Prediction Center issued this mesoscale discussion at Jan 1, 2003, 5:37 AM MST for Cheyenne County, Kit Carson County, Yuma County, Colorado; 12 counties in Kansas; 9 counties in Nebraska. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 1, 2003, 5:37 AM MST (12:37 UTC)
- Expired
- Jan 1, 2003, 10:00 AM MST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Decatur County, KS, Gove County, KS, Greeley County, KS, Logan County, KS, Rawlins County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Dundy County, NE, Frontier County, NE, Gosper County, NE, Hayes County, NE, Hitchcock County, NE, Lincoln County, NE, Perkins County, NE, Red Willow County, NE
The radar
The Goodland radar (KGLD), 45 km from the middle of the area, began a volume at 12:40 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, 0.6 hours before the alert went out and 162 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
- 880 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -94 m²/s²
- 0-3 km storm-relative helicity
- -63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
323 ACUS11 KWNS 011238 SWOMCD SPC MCD 011237 COZ000-NEZ000-KSZ000-011700- MESOSCALE DISCUSSION 0004 NWS STORM PREDICTION CENTER NORMAN OK 0637 AM CST WED JAN 01 2003 AREAS AFFECTED...FAR ERN CO...FAR SWRN NEB...AND NWRN KS CONCERNING...HEAVY SNOW VALID 011237Z - 011700Z LOCALLY HEAVY SNOW...WITH SNOWFALL RATES OF 1/HR...ARE EXPECTED ACROSS FAR ERN CO...NWRN KS...AND FAR SWRN NEB THROUGH 01/18Z. STRONG 850-500MB DEFORMATION ZONE AND FRONTOGENETIC FORCING WILL PERSIST ACROSS THE DISCUSSION AREA THROUGH 18Z...GENERALLY NORTH OF VORTICITY MAX/DEEPENING UPPER LOW EVIDENT IN WV IMAGERY OVER FAR SERN CO AND SWRN KS AT 12Z. MODERATE SNOW WAS OBSERVED AT SEVERAL STATIONS ALONG THE I-70 CORRIDOR BETWEEN LIC AND GLD AT 01/12Z. HEAVY SNOW WILL TAKE AN HOUR OR TWO TO DEVELOP ACROSS SWRN NEB WHERE SURFACE DEWPOINT DEPRESSIONS AT IML...MCK...AND LBF ARE PRESENTLY IN EXCESS OF 10F. PRESENT RADAR TRENDS SUGGEST HEAVIEST SNOW FROM I-70 NWD TO THE TRI-BORDER AREA OF CO/KS/NEB THROUGH 18Z...BEFORE STRONGEST FORCING MOVES EAST OF THE REGION AND SNOWFALL RATES DIMINISH. ..BANACOS.. 01/01/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... 38290266 38190137 38370094 38930044 39290027 39610017 40129994 40529979 40980009 41220070 41090128 40790192 40380241 39870265 39430289 38980284
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 31, 8:59 PM MST | Mesoscale Discussion | SPC | Cheyenne, Elbert, Kiowa, Kit Carson, Lincoln, Logan and 5 more | 6 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.