Alert archive / Missouri / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 82, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 19, 2017, 4:12 AM CDT for Callaway County, Montgomery County, Warren County, Missouri. It was in force for 33 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
- May 19, 2017, 4:12 AM CDT (09:12 UTC)
- Expired
- May 19, 2017, 4:45 AM CDT
- In force
- 33 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Callaway County, MO, Montgomery County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 73 km from the middle of the area, began a volume at 09:13 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, 4:13 AM CDT | TSTM WND DMG | 3 Wnw Mineola, MO | SEMI BLOWN OVER ON INTERSTATE 70 WEST OF DANVILLE. |
| May 19, 4:15 AM CDT | TORNADO | 1 E Williamsburg, MO | A WEAK TORNADO FORMED ONE MILE EAST OF WILLIAMSBURG, MISSOURIALONG OLD US 40 AT A RESIDENCE AND BUSINESS WHERE TWO BARNS WERE DAMAGED AND ANOTHER WAS DESTROYED. TWO VEHICLES WERE ALSO FLIPPED AT THIS LOCATION. DEBRIS WAS TOSSED UP TO MILE DOWN THE TORNADOES PA |
| May 19, 4:17 AM CDT | TSTM WND GST 60 | Williamsburg, MO | LARGE TREE BRANCH BLOWN DOWN AND PEA SIZE HAIL. |
| 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 nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.2 hours before the alert went out and 276 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.
133
WUUS53 KLSX 190912
SVRLSX
MOC027-139-219-190945-
/O.NEW.KLSX.SV.W.0082.170519T0912Z-170519T0945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
412 AM CDT FRI MAY 19 2017
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Montgomery County in east central Missouri...
Northeastern Callaway County in central Missouri...
Northwestern Warren County in east central Missouri...
* Until 445 AM CDT.
* At 412 AM CDT, severe thunderstorms were located along a line
extending from near Shamrock to 7 miles west of Big Spring, moving
east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Montgomery City, Wellsville, New Florence, Jonesburg, Bellflower,
Shamrock, Buell, Big Spring, Williamsburg, Mineola, High Hill,
Middletown, Portland, Danville and Americus.
This includes Interstate 70 in Missouri between exits 155 and 188.
This also includes Graham Cave State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3901 9186 3906 9173 3906 9164 3910 9163
3915 9152 3914 9126 3900 9126 3899 9119
3893 9119 3893 9111 3888 9111 3887 9110
3870 9174
TIME...MOT...LOC 0912Z 249DEG 45KT 3897 9176 3877 9162
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
Tilly1 follow-up statement
557
WWUS53 KLSX 190945
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
445 AM CDT FRI MAY 19 2017
MOC027-139-219-190954-
/O.EXP.KLSX.SV.W.0082.000000T0000Z-170519T0945Z/
Montgomery MO-Callaway MO-Warren MO-
445 AM CDT FRI MAY 19 2017
...THE SEVERE THUNDERSTORM WARNING FOR MONTGOMERY...NORTHEASTERN
CALLAWAY AND NORTHWESTERN WARREN COUNTIES WILL EXPIRE AT 445 AM
CDT...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning will be allowed to expire.
However gusty winds are still possible with these thunderstorms.
A severe thunderstorm watch remains in effect until 1000 AM CDT for
east central Missouri.
LAT...LON 3901 9186 3906 9173 3906 9164 3910 9163
3915 9152 3914 9126 3900 9126 3899 9119
3893 9119 3893 9111 3888 9111 3887 9110
3870 9174
TIME...MOT...LOC 0944Z 249DEG 45KT 3911 9128 3891 9114
$$
TillyThe 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, 4:20 AM CDT | Tornado Warning | LSX | Callaway, Montgomery, Warren | 25 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
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.