Alert archive / Kansas / Mesoscale Discussions in 2004
Mesoscale Discussion 1939
The Storm Prediction Center issued this mesoscale discussion at Aug 9, 2004, 9:29 PM MDT for 6 counties in Colorado; 10 counties in Kansas. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2004, 9:29 PM MDT (03:29 UTC)
- Expired
- Aug 9, 2004, 10:30 PM MDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
Counties Bent County, CO, Cheyenne County, CO, Crowley County, CO, Kiowa County, CO, Otero County, CO, Prowers County, CO, Finney County, KS, Greeley County, KS, Hamilton County, KS, Kearny County, KS, Logan County, KS, Scott County, KS, Stanton County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS
The radar
The Goodland radar (KGLD), 131 km from the middle of the area, began a volume at 03:31 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, 3.5 hours before the alert went out and 164 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
- 2151 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1371 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 10.2
The text
As transmitted, in the capitals the NWS used until 2016.
040 ACUS11 KWNS 100330 SWOMCD SPC MCD 100329 KSZ000-COZ000-100430- MESOSCALE DISCUSSION 1939 NWS STORM PREDICTION CENTER NORMAN OK 1029 PM CDT MON AUG 09 2004 AREAS AFFECTED...ERN CO...WRN KS CONCERNING...TORNADO WATCH 727...728... VALID 100329Z - 100430Z ...MCS IS EVOLVING OVER THE CENTRAL HIGH PLAINS... NUMEROUS THUNDERSTORM CLUSTERS AND AN EXPANDING PRECIPITATION SHIELD APPEAR TO BE AIDING COLD POOL DEVELOPMENT WITHIN UPSLOPE REGION OF ERN CO/WRN KS. THIS EVOLUTION SHOULD DRIVE A MATURING MCS SSEWD ALONG THE CO/KS BORDER. ALTHOUGH SUPERCELL STRUCTURES CURRENTLY EXIST WITHIN THIS COMPLEX...IT APPEARS DAMAGING WINDS MAY BECOME MORE COMMON IF BOW-TYPE STRUCTURES CAN DEVELOP ALONG LEADING EDGE OF STRONGEST SURGE. ..DARROW.. 08/10/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...DDC...GLD...PUB...BOU... 38660444 38980255 39540070 37720061 37180328
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 6:45 PM MDT | Tornado Watch | SPC | Adams, Arapahoe, Baca, Bent, Cheyenne, Crowley and 9 more | 4 hr |
| Aug 10, 12:41 PM MDT | Mesoscale Discussion | SPC | Adams, Arapahoe, Baca, Bent, Broomfield, Cheyenne and 15 more | 94 min |
| Aug 10, 1:15 PM MDT | Tornado Watch | SPC | Adams, Arapahoe, Baca, Bent, Broomfield, Cheyenne and 20 more | 8 hr |
| Aug 9, 6:51 PM MDT | Mesoscale Discussion | SPC | Finney, Gove, Grant, Gray, Greeley, Hamilton and 15 more | 54 min |
| Aug 9, 7:30 PM MDT | Severe Thunderstorm Watch | SPC | Cheyenne, Clark, Decatur, Finney, Ford, Gove and 25 more | 6 hr |
| Aug 10, 12:00 AM MDT | Severe Thunderstorm Watch | SPC | Barber, Clark, Comanche, Edwards, Ford, Gray and 7 more | 5 hr |
| Aug 10, 2:08 AM MDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Ford, Gray and 5 more | 97 min |
| Aug 10, 12:37 PM MDT | Mesoscale Discussion | SPC | Decatur, Graham, Jewell, Mitchell, Norton, Osborne and 5 more | 113 min |
| Aug 10, 4:47 PM MDT | Mesoscale Discussion | SPC | Finney, Gove, Grant, Gray, Greeley, Hamilton and 12 more | 58 min |
| Aug 10, 4:55 PM MDT | Severe Thunderstorm Watch | SPC | Clark, Finney, Ford, Grant, Gray, Greeley and 13 more | 6 hr |
Nearby
Mesoscale Discussions in Kansas, 2004Mesoscale Discussions in Colorado, 2004Every mesoscale discussion in 2004
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.