Alert archive / Missouri / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 92, NWS St. Louis, MO

May 27, 2017Callaway County, Cole County, Osage County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 2017, 1:14 PM CDT for Callaway County, Cole County, Osage County, Missouri. It was in force for 46 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 27, 2017, 1:14 PM CDT (18:14 UTC)
Expired: May 27, 2017, 2:00 PM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 60.0 mph

Counties Callaway County, MO, Cole County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 136 km from the middle of the area, began a volume at 18:14 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 27, 1:21 PM CDT	TSTM WND DMG	1 Sw Brazito, MO	LARGE TREE DOWN IN BRAZITO.
May 27, 1:40 PM CDT	HAIL 1	Wardsville, 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 27, 12:13 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 6.2 hours before the alert went out and 225 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: 3187 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 766 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

As transmitted.

680 
WUUS53 KLSX 271814
SVRLSX
MOC027-051-151-271900-
/O.NEW.KLSX.SV.W.0092.170527T1814Z-170527T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
114 PM CDT SAT MAY 27 2017

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Central Cole County in central Missouri...
  Southwestern Callaway County in central Missouri...
  Southwestern Osage County in central Missouri...

* Until 200 PM CDT.

* At 114 PM CDT, a severe thunderstorm was located near Brazito,
  moving east at 15 mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Jefferson City, Wardsville, St. Martins, Taos, Westphalia, Brazito,
  Lohman, Wainwright, Schubert, Tebbetts, Osage City and Osage Bend.

This also includes  Clarks Hill/Norton Historic Site and Jefferson
Landing Historic Site.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 700 PM CDT for central
Missouri.

LAT...LON 3846 9240 3858 9237 3863 9195 3836 9201
TIME...MOT...LOC 1814Z 275DEG 13KT 3849 9228 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

CVKING

1 follow-up statement

929 
WWUS53 KLSX 271834
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
134 PM CDT SAT MAY 27 2017

MOC027-271843-
/O.CAN.KLSX.SV.W.0092.000000T0000Z-170527T1900Z/
Callaway MO-
134 PM CDT SAT MAY 27 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CALLAWAY COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning will remain just 
south of Callaway County at this time. Therefore, the warning has 
been cancelled.

A tornado watch remains in effect until 700 PM CDT for central
Missouri.

LAT...LON 3854 9227 3856 9208 3856 9204 3857 9197
      3836 9201 3844 9231
TIME...MOT...LOC 1833Z 275DEG 13KT 3848 9219 

$$

MOC051-151-271900-
/O.CON.KLSX.SV.W.0092.000000T0000Z-170527T1900Z/
Cole MO-Osage MO-
134 PM CDT SAT MAY 27 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT
FOR SOUTHEASTERN COLE AND SOUTHWESTERN OSAGE COUNTIES...

At 133 PM CDT, a severe thunderstorm was located over Wardsville,
moving east at 15 mph.

HAZARD...60 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Jefferson City, Wardsville, Taos, Westphalia, Brazito, Schubert,
Osage City and Osage Bend.

This also includes  Clarks Hill/Norton Historic Site.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 700 PM CDT for central
Missouri.

LAT...LON 3854 9227 3856 9208 3856 9204 3857 9197
      3836 9201 3844 9231
TIME...MOT...LOC 1833Z 275DEG 13KT 3848 9219 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 11:37 AM CDT	Special Weather Statement	LSX	Gasconade	38 min
May 27, 11:51 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Osage	39 min
May 27, 12:31 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Washington	44 min
May 27, 12:55 PM CDT	Tornado Warning	LSX	Crawford	11 min
May 27, 1:21 PM CDT	Tornado Warning	LSX	Cole, Osage	39 min
May 27, 1:33 PM CDT	Special Weather Statement	LSX	Sainte Genevieve	42 min
May 27, 1:39 PM CDT	Severe Thunderstorm Warning	LSX	Boone	37 min
May 27, 1:44 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	61 min
May 27, 1:48 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	42 min
May 27, 1:52 PM CDT	Tornado Warning	LSX	Reynolds	38 min
May 27, 1:56 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, City of Saint Louis	23 min
May 27, 1:58 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	51 min
May 27, 2:24 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Cole, Moniteau	51 min
May 27, 2:27 PM CDT	Tornado Warning	LSX	Reynolds	48 min
May 27, 2:58 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Cole, Osage	47 min
May 27, 3:10 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	54 min
May 27, 3:35 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Franklin, Gasconade, Montgomery, Osage, Warren	55 min
May 27, 3:37 PM CDT	Severe Thunderstorm Warning	LSX	Madison	53 min
May 27, 4:06 PM CDT	Tornado Warning	LSX	Crawford, Iron, Reynolds, Washington	54 min
May 27, 4:12 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	34 min
May 27, 4:19 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	56 min
May 27, 4:45 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Sainte Genevieve, Saint Francois	45 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2017 Every 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.