Alert archive / Missouri / Tornado Watches in 1998
Tornado Watch 296
The Storm Prediction Center issued this tornado watch at May 6, 1998, 5:30 PM CDT for 38 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 6, 1998, 5:30 PM CDT (22:30 UTC)
- Expired
- May 6, 1998, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 38 counties
Barton County, MO, Bates County, MO, Benton County, MO, Callaway County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Iron County, MO, Johnson County, MO, Laclede County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Saint Charles County, MO, St. Clair County, MO, Texas County, MO, Vernon County, MO, Warren County, MO, Washington County, MO, Webster County, MO
The radar
The Springfield radar (KSGF), 117 km from the middle of the area, began a volume at 22:33 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 5:58 PM CDT | Severe Thunderstorm Warning | SGF | Camden | 52 min |
| May 6, 6:10 PM CDT | Severe Thunderstorm Warning | SGF | Dade | 50 min |
| May 6, 6:17 PM CDT | Severe Thunderstorm Warning | SGF | Dallas | 48 min |
| May 6, 6:52 PM CDT | Severe Thunderstorm Warning | SGF | Webster, Wright | 63 min |
| May 6, 6:52 PM CDT | Severe Thunderstorm Warning | SGF | Greene | 63 min |
| May 6, 6:53 PM CDT | Severe Thunderstorm Warning | SGF | Laclede | 47 min |
| May 6, 7:05 PM CDT | Severe Thunderstorm Warning | SGF | Dent, Phelps | 50 min |
| May 6, 7:15 PM CDT | Severe Thunderstorm Warning | SGF | Texas | 65 min |
| May 6, 7:28 PM CDT | Tornado Warning | SGF | Dent | 37 min |
| May 6, 8:19 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson | 46 min |
| May 6, 9:30 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 50 min |
The nearest sounding before it
Topeka, KS (KTOP), launched 12:00Z, 10.5 hours before the alert went out and 253 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
- 2 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 688 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
103 WWUS9 KMKC 062221 SEL6 MKC WW 062221 MOZ000-070400- BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 296 STORM PREDICTION CENTER NORMAN OK 521 PM CDT WED MAY 6 1998 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF PARTS OF CENTRAL MISSOURI EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100 PM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 55 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 70 MILES SOUTHWEST OF KNOB NOSTER MISSOURI TO 65 MILES EAST OF VICHY 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 292...WW 293...WW 294...WW 295... DISCUSSION...STORMS CONTINUE TO MOVE EWD INTO PARTS OF WEST CENTRAL MO. AIR MASS IS MODERATELY UNSTABLE WITH LIS BETWEEN -5 AND -8. PRESENCE OF FAVORABLE VERTICAL SHEAR IN THE LOWEST 6KM INDICATES THREAT FOR ISOLATED TORNADOES. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 27025. ...MCCARTHY 384,0942 385,0903 371,0903 371,0942
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 4:00 PM CDT | Tornado Watch | SPC | Barry, Butler, Carter, Christian, Douglas, Dunklin and 20 more | 6 hr |
Nearby
Tornado Watches in Missouri, 1998Every tornado watch in 1998
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.