Alert archive / Missouri / Mesoscale Discussions in 2010
Mesoscale Discussion 1069
The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2010, 11:15 PM CDT for 4 states. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2010, 11:15 PM CDT (04:15 UTC)
- Expired
- Jun 22, 2010, 12:45 AM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 47 counties
Adams County, IA, Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Taylor County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Jefferson County, KS, Leavenworth County, KS, Marshall County, KS, Nemaha County, KS, Pottawatomie County, KS, Shawnee County, KS, Washington County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Harrison County, MO, Holt County, MO, Livingston County, MO, Nodaway County, MO, Platte County, MO, Worth County, MO, Cass County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE
The radar
The Topeka radar (KTWX), 131 km from the middle of the area, began a volume at 04:15 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 4.3 hours before the alert went out and 130 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
- 3501 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 1328 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 14.0
The text
As transmitted, in the capitals the NWS used until 2016.
013
ACUS11 KWNS 220416
SWOMCD
SPC MCD 220415
MOZ000-IAZ000-KSZ000-NEZ000-220545-
MESOSCALE DISCUSSION 1069
NWS STORM PREDICTION CENTER NORMAN OK
1115 PM CDT MON JUN 21 2010
AREAS AFFECTED...SE NEB...NE KS...NW MO...SWRN IA
CONCERNING...SEVERE THUNDERSTORM WATCH 371...
VALID 220415Z - 220545Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 371
CONTINUES.
THE RISK FOR SEVERE STORMS MAY INCREASE ACROSS PARTS OF THE
LOWER/MID MISSOURI VALLEY LATER TONIGHT. TRENDS ARE BEING MONITORED
FOR THE POSSIBILITY OF A NEW WW.
AS A STRONG SHORT WAVE IMPULSE TURNS EASTWARD THROUGH THE BASE OF
THE LARGE-SCALE WESTERN TROUGH...MODELS SUGGEST LITTLE CHANGE TO THE
30-50 KT SOUTHERLY LOW-LEVEL JET ACROSS THE CENTRAL HIGH PLAINS.
STRONGEST LOW-LEVEL WARM ADVECTION AND FORCING FOR CONVECTIVE
DEVELOPMENT APPEARS LIKELY TO REMAIN FOCUSED IN A BAND STRADDLING
THE WESTERN/CENTRAL KANSAS AND NEBRASKA BORDER THROUGH MUCH OF THE
NIGHT. HOWEVER...FORCING ASSOCIATED WITH A WEAK MID-LEVEL IMPULSE
AND SPEED MAXIMUM ROUNDING THE CREST OF THE PLAINS RIDGE COULD
SUPPORT DEVELOPMENT OF CONVECTIVE ACTIVITY EASTWARD INTO THE
LOWER/MID MISSOURI VALLEY AREA DURING THE 06-09Z TIME FRAME. IF
THIS OCCURS...MODEST VERTICAL SHEAR AND INSTABILITY ASSOCIATED WITH
STEEP MID-LEVEL LAPSE RATES AND MIXED LAYER/MOST UNSTABLE CAPE OF
2000-3000+ J/KG WILL SUPPORT THE RISK FOR SEVERE STORMS CAPABLE OF
PRODUCING DAMAGING GUSTS AND HAIL.
..KERR.. 06/22/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DMX...EAX...OAX...TOP...GID...
LAT...LON 40629758 41479639 41079471 39849337 38959463 39029577
39609734 40629758SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 7:00 PM CDT | Mesoscale Discussion | SPC | Appanoose, Cedar, Davis, Des Moines, Henry, Iowa and 15 more | 60 min |
| Jun 21, 9:51 PM CDT | Severe Thunderstorm Watch | SPC | Des Moines, Lee, Van Buren | 7 hr |
| Jun 22, 1:01 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 30 more | 6 hr |
| Jun 22, 4:03 AM CDT | Mesoscale Discussion | SPC | Appanoose, Boone, Clarke, Dallas, Davis, Decatur and 27 more | 57 min |
| Jun 22, 3:37 PM CDT | Mesoscale Discussion | SPC | Cass, Crawford, Fremont, Harrison, Ida, Mills and 6 more | 23 min |
| Jun 22, 6:30 PM CDT | Tornado Watch | SPC | Harrison, Mills, Monona, Pottawattamie, Shelby | 6 hr |
| Jun 21, 10:32 PM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Decatur, Gove, Graham, Jewell, Logan and 11 more | 6 hr |
| Jun 22, 3:24 PM CDT | Mesoscale Discussion | SPC | Clark, Ellis, Finney, Ford, Gove, Graham and 20 more | 66 min |
| Jun 22, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Clark, Decatur, Finney, Ford, Gove and 25 more | 7 hr |
| Jun 22, 6:17 PM CDT | Mesoscale Discussion | SPC | Clark, Decatur, Ellis, Finney, Ford, Gove and 26 more | 88 min |
| Jun 22, 10:03 AM CDT | Mesoscale Discussion | SPC | Lewis, Marion, Pike, Ralls | 57 min |
| Jun 21, 7:42 PM CDT | Mesoscale Discussion | SPC | Banner, Box Butte, Dawes, Scotts Bluff, Sioux | 93 min |
| Jun 22, 4:07 PM CDT | Mesoscale Discussion | SPC | Arthur, Banner, Box Butte, Chase, Cheyenne, Dawes and 9 more | 83 min |
| Jun 22, 5:03 PM CDT | Tornado Watch | SPC | Arthur, Banner, Box Butte, Cherry, Cheyenne, Dawes and 12 more | 7 hr |
Nearby
Mesoscale Discussions in Missouri, 2010Mesoscale Discussions in Nebraska, 2010Mesoscale Discussions in Kansas, 2010Every mesoscale discussion in 2010
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.