Alert archive / Missouri / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 45
The Storm Prediction Center issued this severe thunderstorm watch at Mar 29, 2002, 7:30 AM CST for 9 counties in Illinois; 59 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 29, 2002, 7:30 AM CST (13:30 UTC)
- Expired
- Mar 29, 2002, 1:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 68 counties
Alexander County, IL, Clinton County, IL, Jackson County, IL, Madison County, IL, Monroe County, IL, Perry County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, Benton County, MO, Bollinger County, MO, Boone County, MO, Butler County, MO, Callaway County, MO, Camden County, MO, Cape Girardeau County, MO, Carter County, MO, Cedar County, MO, Christian County, MO, City of Saint Louis, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Johnson County, MO, Laclede County, MO, Lafayette County, MO, Lawrence County, MO, Madison County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Montgomery County, MO, Morgan County, MO, New Madrid County, MO, Osage County, MO, Perry County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Saline County, MO, Scott County, MO, Shannon County, MO, St. Clair County, MO, Stoddard County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 136 km from the middle of the area, began a volume at 13:31 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 7:45 AM CST | Severe Thunderstorm Warning | SGF | Miller | 45 min |
| Mar 29, 8:21 AM CST | Severe Thunderstorm Warning | SGF | Maries | 39 min |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 1.5 hours before the alert went out and 206 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
- 67 J/kg
- Mixed-layer CIN
- -713 J/kg
- Mixed-layer LCL
- 1631 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 300 m²/s²
- 0-3 km storm-relative helicity
- 545 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 291321 SEL5 SPC WW 291312 ILZ000-MOZ000-291900- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 45 STORM PREDICTION CENTER NORMAN OK 712 AM CST FRI MAR 29 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF WESTERN ILLINOIS CENTRAL AND SOUTHERN MISSOURI EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 730 AM UNTIL 100 PM CST. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF KNOB NOSTER MISSOURI TO 35 MILES NORTH NORTHEAST OF CAPE GIRARDEAU 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. DISCUSSION...THUNDERSTORMS /INCLUDING SUPERCELLS/ EXPECTED TO INCREASE IN COVERAGE/INTENSITY NEXT SEVERAL HOURS AS FRONTOGENESIS/ ELEVATED MOISTURE INFLUX CONTINUE ALONG A WNW/ESE AXIS OVER CNTRL MO. STEEP MID LEVEL LAPSE RATES AND STRONG /70 KT/ WLY SHEAR WILL BE FAVORABLE FOR LARGE HAIL. COLD DOWNDRAFT POTENTIAL ON 12Z SGF SOUNDING ALSO SUGGESTS POSSIBILITY FOR DAMAGING WINDS LATER THIS MORNING. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 27045. ...CORFIDI 391,0935 385,0891 363,0891 365,0935 WWUS20 KWNS 291321 SEL5 SPC WW 291312 ILZ000-MOZ000-291900- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 45 STORM PREDICTION CENTER NORMAN OK 712 AM CST FRI MAR 29 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF WESTERN ILLINOIS CENTRAL AND SOUTHERN MISSOURI EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 730 AM UNTIL 100 PM CST. HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF KNOB NOSTER MISSOURI TO 35 MILES NORTH NORTHEAST OF CAPE GIRARDEAU 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. DISCUSSION...THUNDERSTORMS /INCLUDING SUPERCELLS/ EXPECTED TO INCREASE IN COVERAGE/INTENSITY NEXT SEVERAL HOURS AS FRONTOGENESIS/ ELEVATED MOISTURE INFLUX CONTINUE ALONG A WNW/ESE AXIS OVER CNTRL MO. STEEP MID LEVEL LAPSE RATES AND STRONG /70 KT/ WLY SHEAR WILL BE FAVORABLE FOR LARGE HAIL. COLD DOWNDRAFT POTENTIAL ON 12Z SGF SOUNDING ALSO SUGGESTS POSSIBILITY FOR DAMAGING WINDS LATER THIS MORNING. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 27045. ...CORFIDI 391,0935 385,0891 363,0891 365,0935
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 11:00 AM CST | Tornado Watch | SPC | Clay, Crawford, Edwards, Effingham, Fayette, Franklin and 18 more | 5 hr |
| Mar 29, 3:00 PM CST | Tornado Watch | SPC | Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 8 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2002Severe Thunderstorm Watches in Illinois, 2002Every severe thunderstorm watch in 2002
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.