Alert archive / Missouri / Tornado Watches in 2004
Tornado Watch 871
The Storm Prediction Center issued this tornado watch at Oct 29, 2004, 5:10 PM CDT for Bourbon County, Cherokee County, Crawford County, Kansas; 47 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 29, 2004, 5:10 PM CDT (22:10 UTC)
- Expired
- Oct 29, 2004, 10:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 50 counties
Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Adair County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Caldwell County, MO, Camden County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Clark County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Daviess County, MO, Greene County, MO, Grundy County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lawrence County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Moniteau County, MO, Monroe County, MO, Morgan County, MO, Pettis County, MO, Polk County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, St. Clair County, MO, Sullivan County, MO, Vernon County, MO
The radar
The Pleasant Hill radar (KEAX), 55 km from the middle of the area, began a volume at 22:09 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
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 5:18 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, Harrison | 57 min |
| Oct 29, 5:59 PM CDT | Severe Thunderstorm Warning | EAX | Mercer | 46 min |
| Oct 29, 6:02 PM CDT | Severe Thunderstorm Warning | EAX | Jackson, Lafayette | 43 min |
| Oct 29, 6:23 PM CDT | Severe Thunderstorm Warning | EAX | Daviess | 52 min |
| Oct 29, 6:28 PM CDT | Severe Thunderstorm Warning | EAX | Johnson | 47 min |
| Oct 29, 6:38 PM CDT | Tornado Warning | EAX | Grundy | 52 min |
| Oct 29, 6:41 PM CDT | Severe Thunderstorm Warning | SGF | Crawford | 64 min |
| Oct 29, 6:44 PM CDT | Severe Thunderstorm Warning | EAX | Putnam | 31 min |
| Oct 29, 6:48 PM CDT | Tornado Warning | EAX | Johnson | 42 min |
| Oct 29, 7:11 PM CDT | Severe Thunderstorm Warning | EAX | Pettis, Saline | 64 min |
| Oct 29, 7:12 PM CDT | Severe Thunderstorm Warning | EAX | Sullivan | 48 min |
| Oct 29, 7:28 PM CDT | Tornado Warning | EAX | Pettis, Saline | 47 min |
| Oct 29, 7:37 PM CDT | Severe Thunderstorm Warning | EAX | Linn | 38 min |
| Oct 29, 9:24 PM CDT | Severe Thunderstorm Warning | LSX | Boone | 51 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, 10.2 hours before the alert went out and 171 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
- 861 J/kg
- Mixed-layer CIN
- -115 J/kg
- Mixed-layer LCL
- 854 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 301 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 6.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 292210
SEL1
SPC WW 292210
KSZ000-MOZ000-300300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 871
NWS STORM PREDICTION CENTER NORMAN OK
510 PM CDT FRI OCT 29 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST KANSAS
NORTHERN AND WESTERN MISSOURI
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 510 PM UNTIL 1000
PM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST
OF A LINE FROM 35 MILES NORTH OF KIRKSVILLE MISSOURI TO 15 MILES
EAST SOUTHEAST OF JOPLIN MISSOURI.
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...CONTINUE...WW 869...WW 870...
DISCUSSION...STORMS INCREASING ALONG DRY LINE FROM NWRN MO SSWWD TO
SERN KS. WITH VERY STRONG DEEP LAYER SHEAR AND MDT
INSTABILITY...STORMS EXPECTED TO INTENSIFY AND BECOME MORE NUMEROUS.
PARAMETERS SUPPORT A FEW TORNADIC SUPERCELLS AS STORMS DEVELOP EWD
ACROSS MO AND INDIVIDUAL CELLS MOVE RAPIDLY NEWD UNDER THE 100 PLUS
KT JET.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24045.
...HALES
403,0912 370,0930 370,0951 403,0934SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 12:39 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Chautauqua, Coffey and 18 more | 3 hr |
| Oct 29, 2:12 PM CDT | Mesoscale Discussion | SPC | Gentry, Harrison, Mercer, Nodaway, Worth | 3 hr |
| Oct 29, 6:00 PM CDT | Tornado Watch | SPC | Barry, Christian, McDonald, Newton, Stone | 5 hr |
| Oct 29, 6:30 PM CDT | Tornado Watch | SPC | Clark, Scotland | 6 hr |
Nearby
Tornado Watches in Missouri, 2004Tornado Watches in Kansas, 2004Every tornado watch 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.