Alert archive / Missouri / Tornado Warnings in 2017
Tornado Warning 18, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at May 19, 2017, 4:20 AM CDT for Callaway County, Montgomery County, Warren County, Missouri. It was in force for 25 min. 2 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
- May 19, 2017, 4:20 AM CDT (09:20 UTC)
- Expired
- May 19, 2017, 4:45 AM CDT
- In force
- 25 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Callaway County, MO, Montgomery County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 70 km from the middle of the area, began a volume at 09:25 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 |
|---|---|---|---|
| May 19, 4:23 AM CDT | TORNADO | 1 Sse New Florence, MO | A WEAK TORNADO FORMED ON THE SOUTH OUTER ROAD OF INTERSTATE 70 ONE MILE SOUTHEAST OF NEW FLORENCE. IT CAUSED DAMAGE TO TWO BUILDINGS AT A MODOT FACILITY, INCLUDING THE REMOVAL OF 12 GARAGE DOORS. THE TORNADO TOSSED THESE DOORS AND ROOFING MATERIAL INTO THE POW |
| May 19, 4:39 AM CDT | TSTM WND GST 60 | Montgomery City, 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 |
|---|---|---|---|
| May 19, 4:16 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.3 hours before the alert went out and 272 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
- 631 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 2069 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
910
WFUS53 KLSX 190920
TORLSX
MOC027-139-219-190945-
/O.NEW.KLSX.TO.W.0018.170519T0920Z-170519T0945Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
420 AM CDT FRI MAY 19 2017
The National Weather Service in St Louis has issued a
* Tornado Warning for...
Montgomery County in east central Missouri...
East central Callaway County in central Missouri...
North central Warren County in east central Missouri...
* Until 445 AM CDT.
* At 420 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Mineola, moving northeast at 55 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.
* This dangerous storm will be near...
New Florence around 425 AM CDT.
Buell around 430 AM CDT.
Bellflower around 435 AM CDT.
Other locations impacted by this tornadic thunderstorm include
Danville, Middletown and High Hill.
This also includes Graham Cave State Park.
This includes Interstate 70 in Missouri between exits 161 and 179.
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 3915 9153 3914 9126 3900 9126 3899 9119
3894 9119 3893 9118 3877 9167 3893 9178
TIME...MOT...LOC 0920Z 241DEG 48KT 3892 9155
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Tilly2 follow-up statements
169
WWUS53 KLSX 190934
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
434 AM CDT FRI MAY 19 2017
MOC027-190943-
/O.CAN.KLSX.TO.W.0018.000000T0000Z-170519T0945Z/
Callaway MO-
434 AM CDT FRI MAY 19 2017
...THE TORNADO WARNING FOR EAST CENTRAL CALLAWAY COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A severe thunderstorm watch remains in effect until 1000 AM CDT for
east central Missouri.
LAT...LON 3906 9163 3915 9153 3914 9126 3900 9126
3899 9119 3894 9119 3893 9118 3878 9164
TIME...MOT...LOC 0933Z 232DEG 49KT 3899 9135
$$
MOC139-219-190945-
/O.CON.KLSX.TO.W.0018.000000T0000Z-170519T0945Z/
Montgomery MO-Warren MO-
434 AM CDT FRI MAY 19 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR
MONTGOMERY AND NORTH CENTRAL WARREN COUNTIES...
At 433 AM CDT, a severe thunderstorm capable of producing multiple
tornadoes was located over Bellflower, moving northeast at 55 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.
This tornadic thunderstorm will remain over mainly rural areas of
Montgomery and north central Warren Counties, including the following
locations: Danville, Middletown and High Hill.
This also includes Graham Cave State Park.
This includes Interstate 70 in Missouri between exits 170 and 179.
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 3906 9163 3915 9153 3914 9126 3900 9126
3899 9119 3894 9119 3893 9118 3878 9164
TIME...MOT...LOC 0933Z 232DEG 49KT 3899 9135
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Tilly924
WWUS53 KLSX 190945 RRA
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
445 AM CDT FRI MAY 19 2017
MOC139-219-190954-
/O.EXP.KLSX.TO.W.0018.000000T0000Z-170519T0945Z/
Montgomery MO-Warren MO-
445 AM CDT FRI MAY 19 2017
...THE TORNADO WARNING FOR MONTGOMERY AND NORTH CENTRAL WARREN
COUNTIES WILL EXPIRE AT 445 AM CDT...
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, damaging winds remain likely and a Severe
Thunderstorm Warning remains in effect for the area.
A severe thunderstorm watch remains in effect until 1000 AM CDT for
east central Missouri.
LAT...LON 3906 9163 3915 9153 3914 9126 3900 9126
3899 9119 3894 9119 3893 9118 3878 9164
TIME...MOT...LOC 0944Z 241DEG 48KT 3906 9119
$$
CVKINGThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 3:03 AM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 42 min |
| May 19, 3:29 AM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 13 min |
| May 19, 4:03 AM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Montgomery, Osage, Warren and 1 more | 42 min |
| May 19, 4:12 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Montgomery, Warren | 33 min |
| May 19, 4:37 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 53 min |
| May 19, 4:39 AM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Charles, Saint Louis, Warren, Washington and 1 more | 66 min |
| May 19, 6:00 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Moniteau, Osage | 45 min |
| May 19, 6:38 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway, Cole, Gasconade, Montgomery, Osage | 52 min |
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.