Alert archive / Missouri / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 177
The Storm Prediction Center issued this severe thunderstorm watch at Apr 21, 2005, 1:45 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 21, 2005, 1:45 PM CDT (18:45 UTC)
- Expired
- Apr 21, 2005, 7:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 58 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Fulton County, AR, Izard County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Searcy County, AR, Stone County, AR, Washington County, AR, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Linn County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Cole County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, Newton County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Delaware County, OK, Ottawa County, OK
The radar
The Springfield radar (KSGF), 56 km from the middle of the area, began a volume at 18:48 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
29 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 1:58 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 33 min |
| Apr 21, 2:12 PM CDT | Severe Thunderstorm Warning | SGF | McDonald, Newton | 63 min |
| Apr 21, 2:58 PM CDT | Severe Thunderstorm Warning | LZK | Boone | 32 min |
| Apr 21, 3:02 PM CDT | Severe Thunderstorm Warning | LZK | Baxter | 43 min |
| Apr 21, 3:15 PM CDT | Severe Thunderstorm Warning | LZK | Marion | 60 min |
| Apr 21, 3:33 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 42 min |
| Apr 21, 3:45 PM CDT | Severe Thunderstorm Warning | LZK | Baxter | 45 min |
| Apr 21, 4:15 PM CDT | Flash Flood Warning | SGF | Ozark, Taney | 6 hr |
| Apr 21, 4:25 PM CDT | Severe Thunderstorm Warning | EAX | Bates, Cass, Henry | 52 min |
| Apr 21, 4:33 PM CDT | Severe Thunderstorm Warning | SGF | Douglas | 57 min |
| Apr 21, 4:43 PM CDT | Tornado Warning | EAX | Bates, Henry | 47 min |
| Apr 21, 4:45 PM CDT | Severe Thunderstorm Warning | LZK | Izard | 60 min |
| Apr 21, 4:48 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade | 42 min |
| Apr 21, 4:59 PM CDT | Tornado Warning | LSX | Osage | 46 min |
| Apr 21, 5:05 PM CDT | Severe Thunderstorm Warning | SGF | Wright | 41 min |
| Apr 21, 5:08 PM CDT | Severe Thunderstorm Warning | SGF | Phelps | 37 min |
| Apr 21, 5:17 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 58 min |
| Apr 21, 5:30 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade | 30 min |
| Apr 21, 5:36 PM CDT | Severe Thunderstorm Warning | SGF | Texas | 54 min |
| Apr 21, 5:39 PM CDT | Severe Thunderstorm Warning | SGF | Cherokee | 66 min |
| Apr 21, 5:41 PM CDT | Tornado Warning | LSX | Osage | 49 min |
| Apr 21, 5:43 PM CDT | Severe Thunderstorm Warning | LZK | Izard | 62 min |
| Apr 21, 6:06 PM CDT | Tornado Warning | SGF | Crawford | 54 min |
| Apr 21, 6:15 PM CDT | Tornado Warning | SGF | Bourbon | 45 min |
| Apr 21, 6:19 PM CDT | Severe Thunderstorm Warning | LZK | Izard, Stone | 56 min |
| Apr 21, 6:48 PM CDT | Severe Thunderstorm Warning | SGF | Maries | 42 min |
| Apr 21, 6:53 PM CDT | Tornado Warning | SGF | Crawford | 67 min |
| Apr 21, 6:58 PM CDT | Tornado Warning | SGF | Bourbon | 32 min |
| Apr 21, 6:59 PM CDT | Tornado Warning | SGF | Maries | 61 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
Springfield, MO (KSGF), launched 12:00Z, 6.8 hours before the alert went out and 20 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
- 780 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 696 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 1:23 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Madison, Marion, Washington | 67 min |
| Apr 21, 5:14 PM CDT | Mesoscale Discussion | SPC | Benton, Crawford, Franklin, Garland, Hot Spring, Howard and 11 more | 2 hr |
| Apr 21, 5:22 PM CDT | Mesoscale Discussion | SPC | Clay, Greene, Lawrence, Randolph, Sharp | 53 min |
| Apr 21, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Clay, Craighead, Greene, Lawrence, Randolph, Sharp | 7 hr |
| Apr 21, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 21 more | 7 hr |
| 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, 3:34 AM CDT | Mesoscale Discussion | SPC | Brown, Doniphan | 116 min |
| 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, 1:48 PM CDT | Mesoscale Discussion | SPC | Atchison, Jackson, Marshall, Nemaha, Pottawatomie, Riley and 1 more | 87 min |
| Apr 21, 3:05 PM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Brown, Doniphan, Douglas, Franklin and 11 more | 85 min |
| Apr 21, 3:35 PM CDT | Tornado Watch | SPC | Anderson, Atchison, Brown, Doniphan, Douglas, Franklin and 11 more | 7 hr |
| Apr 21, 4:51 PM CDT | Mesoscale Discussion | SPC | Atchison | 54 min |
| Apr 21, 5:52 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 5 more | 53 min |
| Apr 21, 6:10 PM CDT | Tornado Watch | SPC | Bourbon, Cherokee, Crawford, Linn | 7 hr |
| Apr 21, 6:51 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Doniphan, Douglas, Franklin, Jackson and 7 more | 84 min |
| 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, 3:28 PM CDT | Mesoscale Discussion | SPC | Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 14 more | 92 min |
| Apr 21, 6:45 PM CDT | Severe Thunderstorm Watch | SPC | Audrain, Boone, Caldwell, Callaway, Carroll, Chariton and 21 more | 6 hr |
| Apr 20, 8:45 PM CDT | Mesoscale Discussion | SPC | Caddo, Canadian, Cleveland, Comanche, Cotton, Garfield and 9 more | 90 min |
Nearby
Severe Thunderstorm Watches in Missouri, 2005Severe Thunderstorm Watches in Arkansas, 2005Severe Thunderstorm Watches in Kansas, 2005Every severe thunderstorm 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.