Alert archive / Missouri / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 113, NWS St. Louis, MO

June 14, 20185 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 14, 2018, 3:12 PM CDT for 5 counties in Missouri. It was in force for 48 min. 3 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: Jun 14, 2018, 3:12 PM CDT (20:12 UTC)
Expired: Jun 14, 2018, 4:00 PM CDT
In force: 48 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Audrain County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 105 km from the middle of the area, began a volume at 20:15 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 14, 3:22 PM CDT	HAIL 0.5	Laddonia, MO
Jun 14, 3:26 PM CDT	HAIL 1	Laddonia, MO	VIA NWS CHAT.
Jun 14, 3:29 PM CDT	HAIL 0.88	Laddonia, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.2 hours before the alert went out and 269 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2104 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

479 
WUUS53 KLSX 142012
SVRLSX
MOC007-137-139-163-173-142100-
/O.NEW.KLSX.SV.W.0113.180614T2012Z-180614T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
312 PM CDT THU JUN 14 2018

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Southwestern Ralls County in northeastern Missouri...
  Eastern Audrain County in central Missouri...
  Northwestern Montgomery County in east central Missouri...
  Southeastern Monroe County in northeastern Missouri...
  Southwestern Pike County in northeastern Missouri...

* Until 400 PM CDT.

* At 311 PM CDT, severe thunderstorms were located along a line
  extending from near Spencerburg to near Laddonia, moving southeast
  at 20 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...
  Bowling Green, Vandalia, Wellsville, Perry, Laddonia, Farber,
  Martinsburg, Curryville, Tarrants, Spencerburg and Rush Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3952 9161 3936 9110 3902 9160 3930 9191
TIME...MOT...LOC 2011Z 307DEG 16KT 3940 9146 3918 9169 

HAIL...1.00IN
WIND...60MPH
 
$$

Carney

1 follow-up statement

302 
WWUS53 KLSX 142052
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
352 PM CDT THU JUN 14 2018

MOC007-137-139-163-173-142100-
/O.EXP.KLSX.SV.W.0113.000000T0000Z-180614T2100Z/
Ralls MO-Audrain MO-Montgomery MO-Monroe MO-Pike MO-
352 PM CDT THU JUN 14 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN RALLS COUNTY IN
NORTHEASTERN MISSOURI...EASTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...
NORTHWESTERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
SOUTHEASTERN MONROE AND SOUTHWESTERN PIKE COUNTIES IN NORTHEASTERN
MISSOURI WILL EXPIRE AT 400 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with these
thunderstorms.

Remember, a Severe Thunderstorm Warning still remains in effect for
parts of northwest and western Montgomery County.

LAT...LON 3952 9161 3936 9110 3902 9160 3930 9191
TIME...MOT...LOC 2050Z 307DEG 16KT 3930 9128 3908 9151 

$$

Carney

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 3:50 AM CDT	Heat Advisory	LSX	Saint Charles, Saint Louis, City of Saint Louis	24 hr
Jun 14, 1:03 PM CDT	Special Weather Statement	LSX	Knox, Lewis, Shelby	42 min
Jun 14, 1:56 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	49 min
Jun 14, 2:08 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Ralls	25 min
Jun 14, 2:36 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe, Ralls	39 min
Jun 14, 2:40 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	50 min
Jun 14, 3:44 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery	46 min
Jun 14, 4:20 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	40 min
Jun 14, 4:32 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	43 min
Jun 14, 4:45 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Warren	45 min
Jun 14, 5:05 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Warren	40 min
Jun 14, 5:14 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Saint Charles, Warren	61 min
Jun 14, 5:18 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Osage	29 min
Jun 14, 5:37 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Louis	38 min
Jun 14, 6:08 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Louis	52 min
Jun 14, 6:09 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole, Osage	20 min
Jun 14, 6:42 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	48 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2018 Every severe thunderstorm warning in 2018

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.