Alert archive / Missouri / Tornado Warnings in 2017
Tornado Warning 13, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Mar 7, 2017, 12:34 AM CST for Jefferson County, Missouri. It was in force for 26 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 7, 2017, 12:34 AM CST (06:34 UTC)
- Expired
- Mar 7, 2017, 1:00 AM CST
- In force
- 26 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Jefferson County, MO
The radar
The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 06:33 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 7, 12:34 AM CST | TSTM WND DMG | 1 S Dittmer, MO | DAMAGE PATH INCLUDED UPROOTED 100-YEAR OLD OAK TREES... EXTENDING FROM ABOUT A HALF MILE EAST OF HIGHWAY 30 ALONG RIDGE ROAD TO NEAR LAKE ADELLE. TIME ESTIMATED FROM RADAR. |
| Mar 7, 12:35 AM CST | TSTM WND DMG | 4 W Hillsboro, MO | 4 OR 5 HOMES WITH TREES DOWNED ON TOP OF THEM ALONG WOHLBOLD ROAD OFF EMS ROAD. ALSO... NUMEROUS TREES AND POWER LINES DOWNED IN THE AREA. TIME ESTIMATED FROM RADAR. |
| Mar 7, 12:35 AM CST | TSTM WND DMG | 4 W Hillsboro, MO | 4 OR 5 HOMES WITH TREES DOWNED ON TOP OF THEM. ALSO... NUMEROUS TREES AND POWER LINES DOWNED IN THE AREA. TIME ESTIMATED FROM RADAR. |
| Mar 7, 12:36 AM CST | TSTM WND DMG | Cedar Hill, MO | POWER LINES DOWN ON HWY 30 NEAR CEDAR HILL. |
| Mar 7, 12:39 AM CST | TSTM WND DMG | 4 Ssw Otto, MO | 3 TO 4 HOMES WITH TREES BLOWN ON TOP OF THEM ALONG REYNOLDS CREEK ROAD OFF HIGHWAY B. IN ADDITION... NUMEROUS TREES AND POWER LINES DOWN IN THIS AREA. TIME ESTIMATED FROM RADAR. |
| Mar 7, 12:39 AM CST | TSTM WND DMG | 4 Ssw Otto, MO | 3 TO 4 HOMES WITH TREES BLOWN ON TOP OF THEM. IN ADDITION... NUMEROUS TREES AND POWER LINES DOWN IN THIS AREA. TIME ESTIMATED FROM RADAR. |
| Mar 7, 12:39 AM CST | TORNADO | Hillsboro, MO | EF0 TORNADO WITH A TRACK LENGTH OF 1.2 MILES AND WIDTH OF 75 YARDS. MAXIMUM WIND SPEED OF 80 MPH. |
| Mar 7, 12:40 AM CST | TSTM WND DMG | 5 Nnw Hillsboro, MO | SEVERAL TREES BLOWN DOWN ALONG HIGHWAY B NORTH NORTHEAST OF HILLSBORO. |
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
Lincoln, IL (KILX), launched 00:00Z, 6.6 hours before the alert went out and 275 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
- 4 J/kg
- Mixed-layer CIN
- -285 J/kg
- Mixed-layer LCL
- 651 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 475 m²/s²
- 0-3 km storm-relative helicity
- 484 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
240
WFUS53 KLSX 070634
TORLSX
MOC099-070700-
/O.NEW.KLSX.TO.W.0013.170307T0634Z-170307T0700Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
1234 AM CST TUE MAR 7 2017
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Northwestern Jefferson County in east central Missouri...
* Until 100 AM CST.
* At 1233 AM CST, a severe thunderstorm capable of producing a
tornado was located over Dittmer, moving east at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Hillsboro, Cedar Hill, Antonia, Cedar Hill Lakes, Dittmer, Horine,
Scotsdale, Hematite, Otto, Victoria, Morse Mill, Oermann, Mapaville
and Grubville.
This also includes Sandy Creek Covered Bridge Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3819 9077 3821 9078 3823 9078 3839 9074
3840 9074 3841 9045 3817 9043
TIME...MOT...LOC 0633Z 267DEG 36KT 3830 9070
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Kanofsky2 follow-up statements
263
WWUS53 KLSX 070643
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1243 AM CST TUE MAR 7 2017
MOC099-070700-
/O.CON.KLSX.TO.W.0013.000000T0000Z-170307T0700Z/
Jefferson MO-
1243 AM CST TUE MAR 7 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 AM CST FOR CENTRAL
JEFFERSON COUNTY...
At 1243 AM CST, a severe thunderstorm capable of producing a tornado
was located near Cedar Hill Lakes, moving east at 40 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation. Radar indicates two circulations
within this warning.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Hillsboro, Cedar Hill, Antonia, Cedar Hill Lakes, Horine, Scotsdale,
Otto, Mapaville and Morse Mill.
This also includes Sandy Creek Covered Bridge Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 3821 9065 3840 9067 3841 9045 3820 9043
TIME...MOT...LOC 0643Z 267DEG 36KT 3831 9057
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
Kanofsky257
WWUS53 KLSX 070653
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1253 AM CST TUE MAR 7 2017
MOC099-070703-
/O.EXP.KLSX.TO.W.0013.000000T0000Z-170307T0700Z/
Jefferson MO-
1253 AM CST TUE MAR 7 2017
...THE TORNADO WARNING FOR CENTRAL JEFFERSON COUNTY WILL EXPIRE AT
100 AM CST...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.
A tornado watch remains in effect until 400 AM CST for east central
Missouri.
LAT...LON 3821 9065 3840 9067 3841 9045 3820 9043
TIME...MOT...LOC 0653Z 267DEG 36KT 3831 9047
$$
KanofskyThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 9:33 PM CST | Severe Thunderstorm Warning | LSX | Knox, Lewis, Marion, Monroe, Ralls, Shelby | 57 min |
| 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, 12:48 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
Tornado Warnings in Missouri, 2017Every tornado warning in 2017Tornadoes 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.