Alert archive / Missouri / Tornado Warnings in 2010
Tornado Warning 30, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 30, 2010, 7:40 PM CDT for 4 counties in Missouri. It was in force for 50 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 30, 2010, 7:40 PM CDT (00:40 UTC)
- Expired
- Apr 30, 2010, 8:30 PM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
Counties Crawford County, MO, Franklin County, MO, Jefferson County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 52 km from the middle of the area, began a volume at 00:41 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 30, 8:27 PM CDT | TORNADO | 5 Nw Hillsboro, MO | SIGNIFICANT TREE DAMAGE....SOME TREES SNAPPED OFF...POLE BARN DESTROYED. |
| Apr 30, 8:29 PM CDT | TORNADO | Morse Mill, MO | STRUCTURAL DAMAGE AT BAPTIST CHURCH ON HIGHWAY B...JUST NORTH OF BIG RIVER. TIME ESTIMATED FROM RADAR. |
| Apr 30, 8:30 PM CDT | TORNADO | 1 Ne Morse Mill, MO | FALLING TREES DAMAGED SEVERAL HOUSES ALONG KLONDIKE ROAD. ONE HOMEOWNER BRIEFLY TRAPPED BY THE FALLEN TREE. |
| Apr 30, 8:30 PM CDT | TORNADO | 2 Ne Hillsboro, MO | A TREE FELL ONTO A HOME CAUSING SIGNIFICANT DAMAGE....TIME ESTIMATED.... |
| Apr 30, 8:30 PM CDT | TORNADO | 4 Se Cedar Hill, MO | POWER LINES AND TREES ARE DOWN AROUND LAKE TISHOMINGO...AND POWER IS OUT IN THE AREA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 30, 2:40 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 287 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
- 1090 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 718 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 340 m²/s²
- 0-3 km storm-relative helicity
- 345 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 10.4
The text
As transmitted, in the capitals the NWS used until 2016.
223 WFUS53 KLSX 010040 TORLSX MOC055-071-099-221-010130- /O.NEW.KLSX.TO.W.0030.100501T0040Z-100501T0130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 740 PM CDT FRI APR 30 2010 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN CRAWFORD COUNTY IN EAST CENTRAL MISSOURI... SOUTHEASTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI... WEST CENTRAL JEFFERSON COUNTY IN EAST CENTRAL MISSOURI... NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI... * UNTIL 830 PM CDT * AT 737 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR ANTHONIES MILL...AND MOVING NORTHEAST AT 40 MPH. * LOCATIONS IMPACTED INCLUDE... HILLSBORO...CEDAR HILL...RICHWOODS...PARKWAY...LONEDELL... DITTMER...PINEY PARK...FLETCHER...MOSELLE...GRUBVILLE...OERMANN... ROBERTSVILLE...MORSE MILL...CATAWISSA AND MAPAVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 3850 9083 3822 9044 3798 9109 3811 9121 TIME...MOT...LOC 0040Z 228DEG 34KT 3810 9106 $$ KANOFSKY
2 follow-up statements
821 WWUS53 KLSX 010101 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 801 PM CDT FRI APR 30 2010 MOC055-010111- /O.CAN.KLSX.TO.W.0030.000000T0000Z-100501T0130Z/ CRAWFORD MO- 801 PM CDT FRI APR 30 2010 ...THE TORNADO WARNING FOR NORTHEASTERN CRAWFORD COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 3802 9099 3817 9104 3850 9083 3822 9044 TIME...MOT...LOC 0101Z 228DEG 34KT 3823 9087 $$ MOC071-099-221-010130- /O.CON.KLSX.TO.W.0030.000000T0000Z-100501T0130Z/ WASHINGTON MO-JEFFERSON MO-FRANKLIN MO- 801 PM CDT FRI APR 30 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN FRANKLIN... WEST CENTRAL JEFFERSON AND NORTHERN WASHINGTON COUNTIES UNTIL 830 PM CDT... AT 758 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR RICHWOODS...OR 11 MILES SOUTHEAST OF ST. CLAIR...MOVING NORTHEAST AT 40 MPH. LOCATIONS IMPACTED INCLUDE... HILLSBORO...CEDAR HILL...LONEDELL...DITTMER...FLETCHER...MOSELLE... GRUBVILLE...OERMANN...ROBERTSVILLE...MORSE MILL...CATAWISSA AND MAPAVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 3802 9099 3817 9104 3850 9083 3822 9044 TIME...MOT...LOC 0101Z 228DEG 34KT 3823 9087 $$ KANOFSKY
738 WWUS53 KLSX 010115 SVSLSX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 815 PM CDT FRI APR 30 2010 MOC071-099-221-010130- /O.CON.KLSX.TO.W.0030.000000T0000Z-100501T0130Z/ WASHINGTON MO-JEFFERSON MO-FRANKLIN MO- 815 PM CDT FRI APR 30 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN FRANKLIN... WEST CENTRAL JEFFERSON AND NORTH CENTRAL WASHINGTON COUNTIES UNTIL 830 PM CDT... AT 811 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 5 MILES NORTHEAST OF RICHWOODS...OR 10 MILES WEST OF HILLSBORO...MOVING NORTHEAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE... HILLSBORO...CEDAR HILL...DITTMER...GRUBVILLE...ROBERTSVILLE... OERMANN...CATAWISSA...MORSE MILL AND MAPAVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 3803 9097 3816 9100 3847 9078 3822 9044 TIME...MOT...LOC 0115Z 240DEG 25KT 3822 9072 $$ KANOFSKY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:45 PM CDT | Flash Flood Warning | LSX | Crawford | 6 hr |
| Apr 30, 7:55 PM CDT | Tornado Warning | LSX | Jefferson, Saint Francois, Washington | 50 min |
| Apr 30, 8:07 PM CDT | Tornado Warning | LSX | Reynolds | 38 min |
| Apr 30, 8:14 PM CDT | Flash Flood Warning | LSX | Franklin, Jefferson, Washington | 6 hr |
| Apr 30, 8:21 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis | 39 min |
| Apr 30, 8:39 PM CDT | Flash Flood Warning | LSX | Saint Louis, City of Saint Louis | 6 hr |
| Apr 30, 8:43 PM CDT | Tornado Warning | LSX | Iron, Reynolds | 47 min |
| Apr 30, 8:54 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 51 min |
| Apr 30, 9:02 PM CDT | Tornado Warning | LSX | Jefferson, Sainte Genevieve | 29 min |
| Apr 30, 9:10 PM CDT | Tornado Warning | LSX | Iron, Madison | 50 min |
| Apr 30, 9:23 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 37 min |
| Apr 30, 9:51 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 39 min |
| May 1, 3:54 AM CDT | Flash Flood Watch | LSX | Crawford, Iron, Jefferson, Madison, Reynolds, Sainte Genevieve and 2 more | 23 hr |
Nearby
Tornado Warnings in Missouri, 2010Every tornado warning in 2010Tornadoes in 2010
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.