Alert archive / Missouri / Tornado Warnings in 2015

Tornado Warning 31, NWS St. Louis, MO

June 28, 2015Gasconade County, Montgomery County, Missouri

NWS St. Louis, MO issued this tornado warning at Jun 28, 2015, 6:11 PM CDT for Gasconade County, Montgomery County, Missouri. It was in force for 20 min. 1 report 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 28, 2015, 6:11 PM CDT (23:11 UTC)
Expired: Jun 28, 2015, 6:31 PM CDT
In force: 20 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Gasconade County, MO, Montgomery County, MO

The radar

The St Louis radar (KLSX), 69 km from the middle of the area, began a volume at 23:13 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
Jun 28, 6:13 PM CDT	TSTM WND GST 60	Gasconade, MO	ALSO NICKEL SIZE HAIL

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
Jun 28, 3:03 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.2 hours before the alert went out and 285 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: 1208 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

329 
WFUS53 KLSX 282311
TORLSX
MOC073-139-282345-
/O.NEW.KLSX.TO.W.0031.150628T2311Z-150628T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
611 PM CDT SUN JUN 28 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  EXTREME SOUTHERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 645 PM CDT

* AT 610 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 9 MILES WEST OF HERMANN...AND MOVING SOUTHEAST
  AT 25 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL.

  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...
  HERMANN...SWISS...GASCONADE AND RHINELAND.

THIS WARNING INCLUDES DEUTSCHHEIM HISTORIC SITE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3877 9160 3872 9142 3871 9142 3871 9140
      3870 9137 3867 9137 3853 9144 3863 9164
TIME...MOT...LOC 2312Z 293DEG 22KT 3866 9158

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

KANOFSKY

1 follow-up statement

932 
WWUS53 KLSX 282331
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
631 PM CDT SUN JUN 28 2015

MOC073-139-282341-
/O.CAN.KLSX.TO.W.0031.000000T0000Z-150628T2345Z/
GASCONADE MO-MONTGOMERY MO-
631 PM CDT SUN JUN 28 2015

...THE TORNADO WARNING FOR EXTREME SOUTHERN MONTGOMERY AND GASCONADE
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 10 PM.

LAT...LON 3877 9160 3872 9142 3871 9142 3871 9140
      3870 9137 3867 9137 3853 9144 3863 9164
TIME...MOT...LOC 2331Z 293DEG 22KT 3861 9144

$$

KANOFSKY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 4:04 PM CDT	Tornado Warning	LSX	Marion, Ralls	26 min
Jun 28, 4:22 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	38 min
Jun 28, 4:37 PM CDT	Tornado Warning	LSX	Pike, Ralls	23 min
Jun 28, 4:43 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Pike, Ralls	47 min
Jun 28, 4:51 PM CDT	Tornado Warning	LSX	Monroe, Pike, Ralls	24 min
Jun 28, 4:55 PM CDT	Tornado Warning	LSX	Audrain, Callaway, Montgomery	39 min
Jun 28, 4:56 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Shelby	49 min
Jun 28, 5:01 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau	20 min
Jun 28, 5:05 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	40 min
Jun 28, 5:07 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Osage	38 min
Jun 28, 5:30 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Franklin, Gasconade, Montgomery, Warren	45 min
Jun 28, 5:32 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Gasconade, Montgomery, Osage	43 min
Jun 28, 5:45 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Gasconade, Osage	31 min
Jun 28, 5:48 PM CDT	Tornado Warning	LSX	Callaway	27 min
Jun 28, 5:53 PM CDT	Tornado Warning	LSX	Callaway, Gasconade, Montgomery	37 min
Jun 28, 6:06 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	39 min
Jun 28, 6:08 PM CDT	Tornado Warning	LSX	Callaway, Osage	13 min
Jun 28, 6:14 PM CDT	Tornado Warning	LSX	Lincoln, Pike	31 min
Jun 28, 6:29 PM CDT	Tornado Warning Tornado observed	LSX	Lincoln, Pike	31 min
Jun 28, 6:45 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	40 min

Nearby

Tornado Warnings in Missouri, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.