Alert archive / Missouri / Tornado Warnings in 2010
Tornado Warning 50, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Jun 21, 2010, 9:52 PM CDT for Lewis County, Missouri. It was in force for 38 min. 1 report 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
- Jun 21, 2010, 9:52 PM CDT (02:52 UTC)
- Expired
- Jun 21, 2010, 10:30 PM CDT
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
County Lewis County, MO
The radar
The Quad Cities radar (KDVN), 182 km from the middle of the area, began a volume at 02:54 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 |
|---|---|---|---|
| Jun 21, 10:15 PM CDT | FUNNEL CLOUD | 4 N Monticello, MO | SEVERAL REPORTS OF A FUNNEL CLOUD AND ONE WALL CLOUD REPORT |
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 |
|---|---|---|---|
| Jun 21, 4:36 PM CDT | Tornado Watch | SPC | 5 hr |
| Jun 21, 9:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.9 hours before the alert went out and 186 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
- 2621 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 930 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 7.6
The text
As transmitted, in the capitals the NWS used until 2016.
240
WFUS53 KLSX 220252
TORLSX
MOC111-220330-
/O.NEW.KLSX.TO.W.0050.100622T0252Z-100622T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
952 PM CDT MON JUN 21 2010
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
* TORNADO WARNING FOR...
NORTHERN LEWIS COUNTY IN NORTHEAST MISSOURI...
* UNTIL 1030 PM CDT
* AT 949 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 7 MILES NORTHEAST OF LA BELLE...OR 17 MILES WEST
OF CANTON...AND MOVING EAST AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
CANTON...LA GRANGE AND MONTICELLO.
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 4024 9150 4022 9150 4014 9152 4004 9149
4015 9195 4026 9194
TIME...MOT...LOC 0252Z 283DEG 26KT 4020 9181
$$
KANOFSKY1 follow-up statement
678
WWUS53 KLSX 220316
SVSLSX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1016 PM CDT MON JUN 21 2010
MOC111-220330-
/O.CON.KLSX.TO.W.0050.000000T0000Z-100622T0330Z/
LEWIS MO-
1016 PM CDT MON JUN 21 2010
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN LEWIS COUNTY
UNTIL 1030 PM CDT...
AT 1014 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 10 MILES NORTHEAST OF LEWISTOWN...OR 11 MILES
NORTHWEST OF CANTON...MOVING EAST AT 20 MPH.
AT 1015 PM...TRAINED SPOTTERS REPORTED A FUNNEL CLOUD NORTHEAST OF
MONTICELLO.
LOCATIONS IMPACTED INCLUDE...
CANTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
&&
LAT...LON 4024 9150 4014 9152 4008 9150 4006 9151
4010 9164 4015 9181 4025 9179
TIME...MOT...LOC 0316Z 276DEG 16KT 4021 9169
$$
KANOFSKYThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 8:57 PM CDT | Tornado Warning | LSX | Knox | 48 min |
| Jun 21, 9:15 PM CDT | Tornado Warning | LSX | Knox, Lewis | 45 min |
| Jun 21, 10:27 PM CDT | Tornado Warning | LSX | Lewis | 22 min |
| Jun 22, 3:23 AM CDT | River Flood Warning | LSX | Lewis | 3 days |
| Jun 22, 9:40 AM CDT | Severe Thunderstorm Warning | LSX | Lewis | 54 min |
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.