Alert archive / Nebraska / Mesoscale Discussions in 2008
Mesoscale Discussion 1221
The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2008, 6:23 AM MDT for 8 counties in Colorado; 11 counties in Kansas; 14 counties in Nebraska. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Jun 5, 2008, 6:23 AM MDT (12:23 UTC)
- Expired
- Jun 5, 2008, 7:30 AM MDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 33 counties
Baca County, CO, Bent County, CO, Cheyenne County, CO, Crowley County, CO, Kiowa County, CO, Kit Carson County, CO, Otero County, CO, Prowers County, CO, Cheyenne County, KS, Decatur County, KS, Greeley County, KS, Hamilton County, KS, Logan County, KS, Rawlins County, KS, Sherman County, KS, Stanton County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, Perkins County, NE, Red Willow County, NE
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 0.4 hours before the alert went out and 109 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
- 692 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 051223 SWOMCD SPC MCD 051223 NEZ000-KSZ000-COZ000-051330- MESOSCALE DISCUSSION 1221 NWS STORM PREDICTION CENTER NORMAN OK 0723 AM CDT THU JUN 05 2008 AREAS AFFECTED...PORTIONS S-CENTRAL THROUGH ERN CO...WRN KS...SWRN THROUGH CENTRAL NEB. CONCERNING...SEVERE THUNDERSTORM WATCH 459... VALID 051223Z - 051330Z THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 459 CONTINUES. WIDELY SCATTERED TSTMS -- INCLUDING A COUPLE OF INITIALLY ELEVATED SUPERCELLS -- CONTINUE TO POSE THREAT FOR LARGE HAIL ACROSS PORTIONS WW. ADDITIONAL DEVELOPMENT POSSIBLE AS STRONGEST LARGE SCALE ASCENT ALOFT CONTINUES TO SPREAD ACROSS AREA. SFC MESOANALYSIS SHOWS LOW BETWEEN HLC-GCK -- FCST TO DEEPEN AND LIFT NNWWD TOWARD SWRN NEB. TRAILING COLD FRONT EXTENDS INTO NWRN TX PANHANDLE AND WILL CONTINUE MOVING EWD/SEWD...KS SEGMENT BECOMING MORE MERIDIONALLY ALIGNED WITH TIME. WARM FRONT -- REINFORCED BY OUTFLOW FROM ACTIVITY YESTERDAY -- IS DRAWN ENEWD FROM LOW TO NEAR CNK-MCI...AND SHOULD LIFT NWD INTO SRN NEB THROUGH REMAINDER MORNING. 12Z LBF RAOB AND MODIFIED FCST SOUNDINGS SUGGEST AT LEAST SLIGHTLY ELEVATED INFLOW WITH ONGOING ACTIVITY...AND STABLE LAYERS BETWEEN 600-700 MB. HOWEVER...CLEARING EVIDENT IN VIS IMAGERY ACROSS ERN PORTIONS WW AREA WILL FOSTER DIABATIC SFC HEATING THROUGH REMAINDER MORNING...RENDERING PROSPECTIVE INFLOW LAYER MORE NEARLY SFC-BASED WITH TIME. GIVEN STG AMBIENT FLOW FIELDS...RELATED INTENSITY OF DEEP-LAYER SHEAR...AND LARGE HODOGRAPHS CHARACTERISTIC TO REGIME NW OF SFC FRONTAL ZONE...SUPERCELL THREAT WILL PERSIST...AND TORNADO AND WIND POTENTIAL WILL INCREASE WITH TIME. THEREFORE...PRIND SOME OF THIS WW MAY BE UPGRADED BEFORE SCHEDULED EXPIRATION. ..EDWARDS.. 06/05/2008 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...GID...LBF...DDC...GLD...PUB...BOU... 38560411 38850328 40060214 41270165 41660076 41369931 39870007 38520120 37300194 37190358 37910470
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 6:55 PM MDT | Mesoscale Discussion | SPC | Adams, Logan, Morgan, Phillips, Sedgwick, Washington and 1 more | 65 min |
| Jun 4, 7:49 PM MDT | Tornado Watch | SPC | Kit Carson, Yuma | 7 hr |
| Jun 5, 4:07 AM MDT | Mesoscale Discussion | SPC | Bent, Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln and 5 more | 2 hr |
| Jun 5, 4:33 AM MDT | Severe Thunderstorm Watch | SPC | Baca, Bent, Cheyenne, Crowley, Custer, Huerfano and 11 more | 6 hr |
| Jun 5, 10:08 AM MDT | Mesoscale Discussion | SPC | Baca, Bent, Cheyenne, Kiowa, Kit Carson, Otero and 3 more | 67 min |
| Jun 4, 10:14 PM MDT | Mesoscale Discussion | SPC | Cheyenne, Cloud, Decatur, Graham, Jewell, Mitchell and 11 more | 2 hr |
| Jun 5, 9:35 AM MDT | Mesoscale Discussion | SPC | Brown, Doniphan, Jewell, Republic, Smith | 85 min |
| Jun 5, 9:55 AM MDT | Tornado Watch | SPC | Jewell, Mitchell, Osborne, Phillips, Rooks, Smith | 8 hr |
| Jun 5, 10:13 AM MDT | Mesoscale Discussion | SPC | Barber, Barton, Clay, Cloud, Comanche, Dickinson and 27 more | 92 min |
| Jun 5, 10:47 AM MDT | Tornado Watch | SPC | Barber, Barton, Clay, Cloud, Comanche, Dickinson and 26 more | 8 hr |
| Jun 5, 11:44 AM MDT | Mesoscale Discussion | SPC | Barber, Barton, Cloud, Comanche, Ellsworth, Harper and 18 more | 91 min |
| Jun 5, 12:29 PM MDT | Severe Thunderstorm Watch | SPC | Cheyenne, Clark, Decatur, Finney, Ford, Gove and 25 more | 6 hr |
| Jun 5, 2:27 PM MDT | Mesoscale Discussion | SPC | Barber, Clay, Cloud, Dickinson, Ellsworth, Geary and 14 more | 93 min |
| Jun 5, 3:38 PM MDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Butler and 30 more | 37 min |
| Jun 5, 3:50 PM MDT | Tornado Watch | SPC | Allen, Anderson, Atchison, Brown, Butler, Chase and 27 more | 7 hr |
| Jun 5, 4:50 PM MDT | Tornado Watch | SPC | Jewell | 7 hr |
| Jun 5, 5:22 PM MDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Brown, Butler, Chase and 33 more | 53 min |
| Jun 4, 8:33 PM MDT | Mesoscale Discussion | SPC | Burt, Washington | 87 min |
| Jun 4, 10:56 PM MDT | Tornado Watch | SPC | Burt, Cuming, Dakota, Dixon, Dodge, Thurston and 1 more | 5 hr |
| Jun 5, 2:06 AM MDT | Mesoscale Discussion | SPC | Cass, Douglas, Gage, Johnson, Lancaster, Nemaha and 3 more | 84 min |
| Jun 5, 3:11 AM MDT | Mesoscale Discussion | SPC | Cass | 94 min |
| Jun 5, 9:11 AM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boone, Boyd, Brown, Cedar and 20 more | 94 min |
| Jun 5, 2:09 PM MDT | Mesoscale Discussion | SPC | Adams, Antelope, Blaine, Boone, Brown, Buffalo and 21 more | 2 hr |
| Jun 5, 4:10 PM MDT | Mesoscale Discussion | SPC | Burt, Cass, Cedar, Colfax, Cuming, Dakota and 10 more | 95 min |
Nearby
Mesoscale Discussions in Nebraska, 2008Mesoscale Discussions in Kansas, 2008Mesoscale Discussions in Colorado, 2008Every mesoscale discussion in 2008
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.