Alert archive / Missouri / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 29, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Mar 6, 2017, 9:33 PM CST for 6 counties in Missouri. It was in force for 57 min. 8 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
- Mar 6, 2017, 9:33 PM CST (03:33 UTC)
- Expired
- Mar 6, 2017, 10:30 PM CST
- In force
- 57 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 158 km from the middle of the area, began a volume at 03:35 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 |
|---|---|---|---|
| Mar 6, 9:40 PM CST | TORNADO | 13 Sw Shelbina, MO | A NWS STORM SURVEY TEAM DETERMINED A EF-1 TORNADO BEGAN AROUND 13.4 MILES SOUTHWEST OF SHELBINA AND MOVED NORTHEAST LIFTING 5.5 MILES NORTHEAST OF SHELBINA. THE PATH LENGTH WAS 16 MILES WITH A MAXIMUM WIDTH OF 150 YARDS. |
| Mar 6, 9:49 PM CST | TORNADO | 4 Wnw Shelbina, MO | *** 1 INJ *** EF-1 TORNADO WAS SURVEYED WITH MAXIMUM WINDS OF 100 MPH. THE TORNADO WAS 16 MILES LONG AND 150 YARDS WIDE. THE BULK OF THE DAMAGE WAS EF-0...PRIMARILY TO TREES AND FARM BUILDINGS. ONE HOME TO THE NORTHEAST OF THE HIGH SCHOOL HAD A PORTION OF ITS |
| Mar 6, 9:56 PM CST | TSTM WND DMG | 1 S Center, MO | TARP BLOWN OFF CORN STOCK PILE... MINOR TREE DAMAGE... STREET SIGNS BLOWN DOWN. |
| Mar 6, 9:56 PM CST | HAIL 0.7 | 1 S Center, MO | TARP BLOWN OFF CORN STOCK PILE... MINOR TREE DAMAGE... STREET SIGNS BLOWN DOWN. |
| Mar 6, 10:00 PM CST | TSTM WND DMG | Shelbyville, MO | LARGE TREE BLOWN OVER ONTO HOUSE |
| Mar 6, 10:03 PM CST | TSTM WND DMG | Emden, MO | VIA KHQA TWEET...BUILDING DAMAGE...TREES DOWN IN EMDEN. |
| Mar 6, 10:03 PM CST | TORNADO | 2 W Shelbina, MO | EXTENSIVE DAMAGE TO SOUTH COUNTY HIGH SCHOOL |
| Mar 6, 10:35 PM CST | TSTM WND GST 60 | 3 Wnw Hannibal, MO |
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 |
|---|---|---|---|
| Mar 6, 8:52 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 3.6 hours before the alert went out and 218 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
- 39 J/kg
- Mixed-layer CIN
- -343 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 407 m²/s²
- 0-3 km storm-relative helicity
- 489 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
397
WUUS53 KLSX 070333
SVRLSX
MOC103-111-127-137-173-205-070430-
/O.NEW.KLSX.SV.W.0029.170307T0333Z-170307T0430Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
933 PM CST MON MAR 6 2017
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Knox County in northeastern Missouri...
Ralls County in northeastern Missouri...
Marion County in northeastern Missouri...
Shelby County in northeastern Missouri...
Lewis County in northeastern Missouri...
Monroe County in northeastern Missouri...
* Until 1030 PM CST.
* At 932 PM CST, severe thunderstorms were located along a line
extending from near Memphis to 9 miles northwest of Huntsville,
moving east at 55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Hannibal, Palmyra, Monroe City, Canton, Shelbina, Paris, Edina,
Santa Fe, Warren, New London, La Grange, Clarence, Perry, La Belle,
Madison, Shelbyville, Lewistown, Center, Ewing and Rensselaer.
This also includes Wakonda State Park, Union Covered Bridge Historic
Site, and Mark Twain Lake Recreational Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
A tornado watch remains in effect until 400 AM CST for west central
Illinois...and central and northeastern Missouri.
LAT...LON 4030 9195 4026 9193 4025 9150 4003 9150
3993 9142 3988 9145 3984 9144 3980 9137
3973 9137 3969 9133 3960 9118 3945 9146
3932 9144 3935 9231 3995 9229 3996 9234
4030 9235
TIME...MOT...LOC 0332Z 266DEG 48KT 4047 9227 3956 9264
HAIL...1.00IN
WIND...60MPH
$$
Kanofsky1 follow-up statement
872
WWUS53 KLSX 070406
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1006 PM CST MON MAR 6 2017
MOC103-070415-
/O.CAN.KLSX.SV.W.0029.000000T0000Z-170307T0430Z/
Knox MO-
1006 PM CST MON MAR 6 2017
...THE SEVERE THUNDERSTORM WARNING FOR KNOX COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A tornado watch remains in effect until 400 AM CST for west central
Illinois...and central and northeastern Missouri.
LAT...LON 4025 9150 4003 9150 3993 9142 3988 9145
3984 9144 3980 9137 3973 9137 3969 9133
3960 9118 3945 9146 3932 9144 3935 9231
3967 9230 3974 9211 3991 9206 3995 9195
4026 9195
TIME...MOT...LOC 0405Z 266DEG 48KT 4050 9174 3959 9212
$$
MOC111-127-137-173-205-070430-
/O.CON.KLSX.SV.W.0029.000000T0000Z-170307T0430Z/
Ralls MO-Marion MO-Shelby MO-Lewis MO-Monroe MO-
1006 PM CST MON MAR 6 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CST
FOR RALLS...MARION...SHELBY...LEWIS AND MONROE COUNTIES...
At 1005 PM CST, severe thunderstorms were located along a line
extending from near Kahoka to near Granville, moving east at 55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Trained weather spotters. Trained spotters reported winds
near 60 mph near the Knox and Shelby County line.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Hannibal, Palmyra, Monroe City, Canton, Shelbina, Paris, Santa Fe,
Warren, New London, La Grange, Perry, La Belle, Madison, Shelbyville,
Lewistown, Center, Ewing, Rensselaer, Maywood and Spaulding.
This also includes Wakonda State Park, Union Covered Bridge Historic
Site, and Mark Twain Lake Recreational Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
A tornado watch remains in effect until 400 AM CST for west central
Illinois...and central and northeastern Missouri.
LAT...LON 4025 9150 4003 9150 3993 9142 3988 9145
3984 9144 3980 9137 3973 9137 3969 9133
3960 9118 3945 9146 3932 9144 3935 9231
3967 9230 3974 9211 3991 9206 3995 9195
4026 9195
TIME...MOT...LOC 0405Z 266DEG 48KT 4050 9174 3959 9212
HAIL...1.00IN
WIND...60MPH
$$
KanofskyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 9:42 PM CST | Tornado Warning | LSX | Knox, Shelby | 28 min |
| Mar 6, 9:54 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Boone, Callaway, Cole, Moniteau | 66 min |
| Mar 6, 10:01 PM CST | Tornado Warning | LSX | Boone, Moniteau | 29 min |
| Mar 6, 10:02 PM CST | Tornado Warning | LSX | Lewis, Marion, Shelby | 28 min |
| Mar 6, 10:20 PM CST | Severe Thunderstorm Warning | LSX | Lewis, Marion, Ralls | 55 min |
| Mar 6, 10:22 PM CST | Tornado Warning | LSX | Lewis, Marion | 30 min |
| Mar 6, 10:55 PM CST | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Cole, Franklin, Gasconade, Lincoln and 5 more | 50 min |
| Mar 7, 12:00 AM CST | Severe Thunderstorm Warning | LSX | Crawford, Washington | 60 min |
| Mar 7, 12:08 AM CST | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 52 min |
| Mar 7, 12:34 AM CST | Tornado Warning | LSX | Jefferson | 26 min |
| Mar 7, 12:48 AM CST | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 57 min |
| Mar 7, 4:00 AM CST | Red Flag Warning | LSX | Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 13 more | 15 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 2017Every severe thunderstorm warning in 2017
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.