Alert archive / Missouri / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 784
The Storm Prediction Center issued this severe thunderstorm watch at Aug 25, 2004, 3:15 PM CDT for Monroe County, Saint Clair County, Illinois; 31 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 25, 2004, 3:15 PM CDT (20:15 UTC)
- Expired
- Aug 25, 2004, 9:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 33 counties
Monroe County, IL, Saint Clair County, IL, Camden County, MO, Carter County, MO, Christian County, MO, Cole County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Maries County, MO, Miller County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Pulaski County, MO, Reynolds County, MO, Saint Francois County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 101 km from the middle of the area, began a volume at 20:16 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 3:44 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Cole | 46 min |
| Aug 25, 5:51 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison, Saint Clair | 39 min |
| Aug 25, 6:10 PM CDT | Severe Thunderstorm Warning | SGF | Phelps | 65 min |
| Aug 25, 6:53 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 37 min |
| Aug 25, 6:58 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 47 min |
| Aug 25, 7:04 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 41 min |
| Aug 25, 8:05 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois | 40 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, 8.3 hours before the alert went out and 145 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
- 1899 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 886 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 252014
SEL4
SPC WW 252015
MOZ000-260200-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 784
NWS STORM PREDICTION CENTER NORMAN OK
315 PM CDT WED AUG 25 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN MISSOURI
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
900 PM CDT.
HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 75 STATUTE MILES
EAST AND WEST OF A LINE FROM 40 MILES WEST SOUTHWEST OF WEST
PLAINS MISSOURI TO 45 MILES NORTHEAST OF VICHY MISSOURI.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 782...WW 783...
DISCUSSION...THUNDERSTORMS WILL RAPIDLY BECOME SEVERE ACROSS SRN MO
AHEAD OF S/WV TROUGH. SHEAR PROFILES AND MLCAPES TO 3000 J/KG
SUPPORT SUPERCELLS WHICH SHOULD FAVOR LARGE HAIL AND DAMAGING WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 24030.
...HALES
363,0935 383,0923 383,0894 363,0911SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 9:24 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, DeWitt, Fulton and 22 more | 2 hr |
| Aug 25, 11:59 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Greene, Hancock, Pike and 2 more | 91 min |
| Aug 25, 12:35 PM CDT | Tornado Watch | SPC | Adams, Brown, Hancock, Henderson, Mercer, Pike | 6 hr |
| Aug 25, 1:22 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cass, Champaign, DeKalb and 42 more | 113 min |
| Aug 25, 2:20 PM CDT | Tornado Watch | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 34 more | 6 hr |
| Aug 25, 5:14 PM CDT | Mesoscale Discussion | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 34 more | 91 min |
| Aug 24, 8:20 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Andrew, Atchison, Buchanan, Caldwell, Carroll and 26 more | 7 hr |
| Aug 24, 11:47 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Carroll, Chariton and 22 more | 118 min |
| Aug 25, 2:14 AM CDT | Mesoscale Discussion | SPC | Adair, Andrew, Buchanan, Caldwell, Chariton, Clinton and 14 more | 31 min |
| Aug 25, 8:50 AM CDT | Severe Thunderstorm Watch | SPC | Andrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 6 more | 5 hr |
| Aug 25, 4:50 PM CDT | Mesoscale Discussion | SPC | Bates, Cass, Clay, Jackson, Platte, Vernon | 85 min |
| Aug 25, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Bates, Cass, Clay, Jackson, Platte | 5 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2004Severe Thunderstorm Watches in Illinois, 2004Every severe thunderstorm 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.