Alert archive / Missouri / Tornado Watches in 2005
Tornado Watch 178
The Storm Prediction Center issued this tornado watch at Apr 21, 2005, 3:35 PM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 21, 2005, 3:35 PM CDT (20:35 UTC)
- Expired
- Apr 21, 2005, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 65 counties
Adams County, IA, Cass County, IA, Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Taylor County, IA, Anderson County, KS, Atchison County, KS, Brown County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Marshall County, KS, Miami County, KS, Nemaha County, KS, Osage County, KS, Shawnee County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Bates County, MO, Benton County, MO, Buchanan County, MO, Caldwell County, MO, Camden County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Henry County, MO, Holt County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Morgan County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, St. Clair County, MO, Worth County, MO, Butler County, NE, Cass County, NE, Douglas County, NE, Gage County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Polk County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE
The radar
The Topeka radar (KTWX), 153 km from the middle of the area, began a volume at 20:36 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.
Warnings issued inside it
42 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 3:36 PM CDT | Severe Thunderstorm Warning | TOP | Jackson | 24 min |
| Apr 21, 3:41 PM CDT | Severe Thunderstorm Warning | OAX | Saline | 34 min |
| Apr 21, 3:46 PM CDT | Severe Thunderstorm Warning | OAX | Gage | 29 min |
| Apr 21, 3:52 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster, Otoe | 38 min |
| Apr 21, 3:58 PM CDT | Tornado Warning | TOP | Brown, Jackson, Nemaha | 47 min |
| Apr 21, 3:58 PM CDT | Tornado Warning | OAX | Johnson | 32 min |
| Apr 21, 4:00 PM CDT | Severe Thunderstorm Warning | TOP | Jackson | 30 min |
| Apr 21, 4:10 PM CDT | Tornado Warning | EAX | Atchison | 50 min |
| Apr 21, 4:14 PM CDT | Flash Flood Warning | OAX | Nemaha, Otoe | 2 hr |
| Apr 21, 4:14 PM CDT | Severe Thunderstorm Warning | OAX | Gage | 31 min |
| Apr 21, 4:14 PM CDT | Severe Thunderstorm Warning | OAX | Butler | 46 min |
| Apr 21, 4:25 PM CDT | Severe Thunderstorm Warning | EAX | Bates, Cass, Henry | 52 min |
| Apr 21, 4:29 PM CDT | Severe Thunderstorm Warning | OAX | Johnson, Otoe | 31 min |
| Apr 21, 4:30 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster | 30 min |
| Apr 21, 4:37 PM CDT | Severe Thunderstorm Warning | OAX | Cass | 23 min |
| Apr 21, 4:43 PM CDT | Tornado Warning | EAX | Bates, Henry | 47 min |
| Apr 21, 4:47 PM CDT | Tornado Warning | OAX | Johnson, Nemaha, Otoe | 28 min |
| Apr 21, 4:48 PM CDT | Tornado Warning | EAX | Atchison | 42 min |
| Apr 21, 4:55 PM CDT | Severe Thunderstorm Warning | OAX | Sarpy, Saunders | 35 min |
| Apr 21, 4:59 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster | 16 min |
| Apr 21, 5:00 PM CDT | Severe Thunderstorm Warning | OAX | Cass | 45 min |
| Apr 21, 5:05 PM CDT | Tornado Warning | EAX | Atchison, Leavenworth | 40 min |
| Apr 21, 5:07 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan | 53 min |
| Apr 21, 5:11 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Leavenworth, Wyandotte | 50 min |
| Apr 21, 5:15 PM CDT | Tornado Warning | OAX | Otoe | 30 min |
| Apr 21, 5:24 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Pettis | 51 min |
| Apr 21, 5:35 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 40 min |
| Apr 21, 5:37 PM CDT | Tornado Warning | EAX | Clay, Jackson, Platte, Ray | 38 min |
| Apr 21, 5:43 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Clay, Clinton, Ray | 55 min |
| Apr 21, 5:43 PM CDT | Severe Thunderstorm Warning | OAX | Otoe | 32 min |
| Apr 21, 5:46 PM CDT | Severe Thunderstorm Warning | EAX | Atchison, Leavenworth | 44 min |
| Apr 21, 6:04 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Carroll, Lafayette, Ray | 56 min |
| Apr 21, 6:09 PM CDT | Flash Flood Warning | OAX | Otoe | 96 min |
| Apr 21, 6:16 PM CDT | Flash Flood Warning | OAX | Fremont | 119 min |
| Apr 21, 6:16 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Platte, Ray | 44 min |
| Apr 21, 6:36 PM CDT | Tornado Warning | EAX | Ray | 39 min |
| Apr 21, 6:59 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 31 min |
| Apr 21, 7:00 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Clay, Jackson, Lafayette, Ray | 45 min |
| Apr 21, 7:06 PM CDT | Tornado Warning | EAX | Carroll, Ray | 39 min |
| Apr 21, 7:08 PM CDT | Severe Thunderstorm Warning | OAX | Page | 55 min |
| Apr 21, 7:20 PM CDT | Severe Thunderstorm Warning | EAX | Cass, Jackson | 40 min |
| Apr 21, 7:53 PM CDT | Severe Thunderstorm Warning | EAX | Lafayette | 52 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 8.6 hours before the alert went out and 127 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
- 626 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 789 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 212033
SEL8
SPC WW 212033
IAZ000-KSZ000-MOZ000-NEZ000-220400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 178
NWS STORM PREDICTION CENTER NORMAN OK
335 PM CDT THU APR 21 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWESTERN IOWA
EASTERN KANSAS
NORTHWEST MISSOURI
SOUTHEAST NEBRASKA
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 335 PM UNTIL
1100 PM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 25 MILES WEST NORTHWEST OF OMAHA
NEBRASKA TO 55 MILES SOUTH SOUTHWEST OF KNOB NOSTER MISSOURI. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 175. WATCH NUMBER 175 WILL NOT BE IN EFFECT AFTER 335
PM CDT. CONTINUE...WW 176...WW 177...
DISCUSSION...AS VIGOROUS TROUGH CENTRAL KS/NE MOVES EWD SEVERE
THUNDERSTORMS WILL BECOME MORE WIDESPREAD ACROSS WATCH AREA. WITH
ENHANCED SHEAR VICINITY WARM FRONT...ALONG WITH STRONG
INSTABILITY...SUPERCELLS ASSOCIATED TORNADO THREAT WILL INCREASE
INTO EVENING HOURS AS DEVELOPMENT CONTINUES TO SPREAD EWD ACROSS
WATCH AREA.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 26030.
...HALES
412,0945 375,0923 375,0951 412,0974SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 7:03 PM CDT | Mesoscale Discussion | SPC | Des Moines, Henry, Lee, Louisa, Muscatine, Scott | 87 min |
| Apr 21, 3:34 AM CDT | Mesoscale Discussion | SPC | Adams, Fremont, Mills, Montgomery, Page, Pottawattamie and 2 more | 116 min |
| Apr 21, 3:05 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills | 85 min |
| Apr 21, 5:52 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page, Pottawattamie | 53 min |
| Apr 21, 6:51 PM CDT | Mesoscale Discussion | SPC | Fremont, Mills, Montgomery, Page, Pottawattamie | 84 min |
| Apr 20, 7:25 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Gove, Logan, Norton, Rawlins and 4 more | 95 min |
| Apr 20, 9:29 PM CDT | Mesoscale Discussion | SPC | Clay, Cloud, Dickinson, Geary, Jackson, Jewell and 13 more | 61 min |
| Apr 20, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Brown, Clay, Cloud, Dickinson, Douglas and 21 more | 7 hr |
| Apr 20, 9:51 PM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Ford, Kingman and 4 more | 84 min |
| Apr 20, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Decatur, Rawlins | 6 hr |
| Apr 20, 11:50 PM CDT | Mesoscale Discussion | SPC | Brown, Clay, Cloud, Ellis, Geary, Jackson and 15 more | 85 min |
| Apr 21, 12:48 AM CDT | Mesoscale Discussion | SPC | Cheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 4 more | 57 min |
| Apr 21, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Cheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 4 more | 4 hr |
| Apr 21, 11:13 AM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Jackson, Jefferson, Marshall and 4 more | 2 hr |
| Apr 21, 11:35 AM CDT | Tornado Watch | SPC | Clay, Cloud, Jackson, Jewell, Marshall, Nemaha and 4 more | 5 hr |
| Apr 21, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford, Linn | 5 hr |
| Apr 21, 1:48 PM CDT | Mesoscale Discussion | SPC | Atchison, Jackson, Marshall, Nemaha, Pottawatomie, Riley and 1 more | 87 min |
| Apr 21, 4:51 PM CDT | Mesoscale Discussion | SPC | Atchison | 54 min |
| Apr 21, 6:10 PM CDT | Tornado Watch | SPC | Bourbon, Cherokee, Crawford, Linn | 7 hr |
| Apr 21, 12:15 PM CDT | Mesoscale Discussion | SPC | Boone, Callaway, Cole, Cooper, Crawford, Franklin and 12 more | 2 hr |
| Apr 21, 1:10 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Audrain, Crawford, Franklin, Gasconade, Jefferson and 16 more | 6 hr |
| Apr 21, 1:23 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Camden, Cedar and 22 more | 67 min |
| Apr 21, 3:28 PM CDT | Mesoscale Discussion | SPC | Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 14 more | 92 min |
| Apr 21, 5:14 PM CDT | Mesoscale Discussion | SPC | McDonald | 2 hr |
| Apr 21, 5:22 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Madison and 8 more | 53 min |
| Apr 21, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Iron and 11 more | 7 hr |
| Apr 21, 6:45 PM CDT | Severe Thunderstorm Watch | SPC | Audrain, Boone, Caldwell, Callaway, Carroll, Chariton and 21 more | 6 hr |
| Apr 20, 8:35 PM CDT | Severe Thunderstorm Watch | SPC | Deuel | 6 hr |
| Apr 20, 11:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Cass, Clay, Fillmore, Gage, Hall and 13 more | 5 hr |
Nearby
Tornado Watches in Missouri, 2005Tornado Watches in Kansas, 2005Tornado Watches in Nebraska, 2005Every tornado watch in 2005
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.