Alert archive / Missouri / Tornado Watches in 2000
Tornado Watch 180
The Storm Prediction Center issued this tornado watch at Apr 19, 2000, 10:00 PM CDT for 9 counties in Illinois; 41 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2000, 10:00 PM CDT (03:00 UTC)
- Expired
- Apr 20, 2000, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 50 counties
Adams County, IL, Brown County, IL, Cass County, IL, Fulton County, IL, Hancock County, IL, McDonough County, IL, Pike County, IL, Schuyler County, IL, Scott County, IL, Audrain County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cedar County, MO, Clark County, MO, Cole County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Gasconade County, MO, Greene County, MO, Hickory County, MO, Howard County, MO, Jasper County, MO, Knox County, MO, Laclede County, MO, Lawrence County, MO, Lewis County, MO, Lincoln County, MO, Maries County, MO, Marion County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Randolph County, MO, Shelby County, MO, St. Clair County, MO, Warren County, MO, Webster County, MO, Wright County, MO
The radar
The Pleasant Hill radar (KEAX), 146 km from the middle of the area, began a volume at 03:02 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
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 10:03 PM CDT | Tornado Warning | SGF | St. Clair | 57 min |
| Apr 19, 10:10 PM CDT | Tornado Warning | SGF | Cedar, Vernon | 65 min |
| Apr 19, 10:58 PM CDT | Tornado Warning | SGF | Hickory, St. Clair | 47 min |
| Apr 19, 11:10 PM CDT | Severe Thunderstorm Warning | ILX | Fulton, Mason | 50 min |
| Apr 19, 11:57 PM CDT | Severe Thunderstorm Warning | SGF | Camden | 33 min |
| Apr 20, 12:12 AM CDT | Severe Thunderstorm Warning | SGF | Miller, Morgan | 33 min |
| Apr 20, 1:13 AM CDT | Severe Thunderstorm Warning | SGF | Barton, Jasper | 47 min |
| Apr 20, 1:17 AM CDT | Severe Thunderstorm Warning | SGF | Dade | 43 min |
| Apr 20, 1:23 AM CDT | Severe Thunderstorm Warning | SGF | Cedar | 52 min |
| Apr 20, 1:28 AM CDT | Severe Thunderstorm Warning | SGF | Barry, Lawrence | 47 min |
| Apr 20, 1:31 AM CDT | Tornado Warning | SGF | Barton, Cedar, Dade | 29 min |
| Apr 20, 1:34 AM CDT | Severe Thunderstorm Warning | EAX | Johnson, Lafayette, Pettis, Saline | 71 min |
| Apr 20, 1:43 AM CDT | Severe Thunderstorm Warning | SGF | St. Clair | 47 min |
| Apr 20, 1:47 AM CDT | Severe Thunderstorm Warning | SGF | Christian, Greene | 43 min |
| Apr 20, 1:57 AM CDT | Severe Thunderstorm Warning | SGF | Benton, Hickory | 48 min |
| Apr 20, 2:11 AM CDT | Severe Thunderstorm Warning | SGF | Dallas, Polk, Webster | 49 min |
| Apr 20, 2:40 AM CDT | Severe Thunderstorm Warning | SGF | Laclede, Wright | 50 min |
| Apr 20, 2:52 AM CDT | Severe Thunderstorm Warning | SGF | Camden, Pulaski | 38 min |
| Apr 20, 3:05 AM CDT | Severe Thunderstorm Warning | SGF | Maries, Miller | 55 min |
| Apr 20, 3:05 AM CDT | Severe Thunderstorm Warning | SGF | Phelps | 55 min |
| Apr 20, 3:21 AM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 54 min |
| Apr 20, 3:38 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Gasconade | 52 min |
| Apr 20, 3:46 AM CDT | Severe Thunderstorm Warning | LSX | Adams | 49 min |
| Apr 20, 3:53 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Montgomery | 47 min |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 3.0 hours before the alert went out and 198 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
- 1428 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1062 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 12.7
The text
As transmitted, in the capitals the NWS used until 2016.
376 WWUS9 KMKC 200233 SEL0 MKC WW 200233 ILZ000-MOZ000-200900- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 180 STORM PREDICTION CENTER NORMAN OK 933 PM CDT WED APR 19 2000 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF WESTERN ILLINOIS CENTRAL AND NORTHEAST MISSOURI EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1000 PM UNTIL 400 AM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 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 15 MILES SOUTH SOUTHWEST OF SPRINGFIELD MISSOURI TO 45 MILES NORTH NORTHEAST OF QUINCY ILLINOIS. 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...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 177. WATCH NUMBER 177 WILL NOT BE IN EFFECT AFTER 1000 PM CDT. CONTINUE...WW 176...WW 178...WW 179... DISCUSSION...SUPERCELLS ALONG THE KS/MO BORDER SHOULD TRACK ENEWD ACROSS MO AND EVENTUALLY INTO WRN IL OVERNIGHT. LATEST VWP FROM SGF INDICATES SR-HELICITY OF 350-400 M2/S2...INDICATING A THREAT FOR A FEW TORNADOES. AVIATION...TORNADOES AND 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 500. MEAN STORM MOTION VECTOR 25030. ...VESCIO 370,0943 403,0920 403,0894 370,0922
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 8:45 PM CDT | Severe Thunderstorm Watch | SPC | Jo Daviess | 4 hr |
| Apr 20, 12:45 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 28 more | 5 hr |
| Apr 20, 3:15 AM CDT | Severe Thunderstorm Watch | SPC | Alexander, Jackson, Perry, Randolph, Union | 5 hr |
| Apr 20, 4:15 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Boone, Brown, Bureau, Calhoun and 61 more | 6 hr |
| Apr 20, 10:00 AM CDT | Tornado Watch | SPC | Bond, Champaign, Clark, Clay, Clinton, Coles and 30 more | 6 hr |
| Apr 19, 8:15 PM CDT | Tornado Watch | SPC | Adair, Andrew, Barton, Bates, Buchanan, Caldwell and 27 more | 6 hr |
| Apr 20, 12:30 AM CDT | Severe Thunderstorm Watch | SPC | Barry, Christian, Douglas, McDonald, Newton, Ozark and 2 more | 6 hr |
Nearby
Tornado Watches in Missouri, 2000Tornado Watches in Illinois, 2000Every tornado watch in 2000
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.