Alert archive / Missouri / Tornado Watches in 2000
Tornado Watch 177
The Storm Prediction Center issued this tornado watch at Apr 19, 2000, 4:30 PM CDT for 12 counties in Illinois; 47 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2000, 4:30 PM CDT (21:30 UTC)
- Expired
- Apr 19, 2000, 10:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 59 counties
Adams County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Menard County, IL, Morgan County, IL, Pike County, IL, Sangamon County, IL, Scott County, IL, Audrain County, MO, Barry County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Christian County, MO, City of Saint Louis, MO, Cole 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, Hickory County, MO, Howell County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Lincoln County, MO, Maries County, MO, Marion County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Newton County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 112 km from the middle of the area, began a volume at 21:34 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 |
|---|---|---|---|---|
| Apr 19, 4:34 PM CDT | Severe Thunderstorm Warning | SGF | Laclede | 41 min |
| Apr 19, 6:06 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 34 min |
| Apr 19, 6:15 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 30 min |
| Apr 19, 6:19 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 46 min |
| Apr 19, 6:19 PM CDT | Severe Thunderstorm Warning | SGF | Pulaski | 26 min |
| Apr 19, 6:37 PM CDT | Tornado Warning | LSX | Saint Charles, Saint Louis | 33 min |
| Apr 19, 6:39 PM CDT | Severe Thunderstorm Warning | SGF | Maries | 36 min |
| Apr 19, 7:00 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 35 min |
| Apr 19, 8:01 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 34 min |
| Apr 19, 8:31 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 19 min |
| Apr 19, 8:47 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 33 min |
| Apr 19, 8:57 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 33 min |
| Apr 19, 9:06 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Schuyler | 54 min |
| Apr 19, 9:06 PM CDT | Severe Thunderstorm Warning | ILX | Morgan | 54 min |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 9.5 hours before the alert went out and 164 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
- 431 J/kg
- Mixed-layer CIN
- -623 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 378 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
578 WWUS9 KMKC 192111 SEL7 SEL7 MKC WW 192111 ILZ000-MOZ000-200300- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 177 STORM PREDICTION CENTER NORMAN OK 411 PM CDT WED APR 19 2000 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF WEST CENTRAL ILLINOIS CENTRAL AND EASTERN MISSOURI EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 430 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 75 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTHEAST OF MONETT MISSOURI TO 40 MILES WEST NORTHWEST OF SPRINGFIELD 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... CONTINUE...WW 176... DISCUSSION...ELEVATED THUNDERSTORMS HAVE BECOME SURFACE BASED OVER MO. STRONG DEEP LAYER SHEAR WILL SUPPORT SUPERCELL STRUCTURES... WITH SOME POTENTIAL FOR TORNADOES...ESPECIALLY OVER ERN MO WHERE LOW LEVEL WINDS ARE BACKED. 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 25035. ...VESCIO 400,0885 362,0920 362,0944 400,0914
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 4:00 PM CDT | Tornado Watch | SPC | Adair, Barton, Bates, Caldwell, Carroll, Cass and 29 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.