Alert archive / Missouri / Tornado Warnings in 2017

Tornado Warning 3, NWS St. Louis, MO

February 28, 20174 counties in Missouri

NWS St. Louis, MO issued this tornado warning at Feb 28, 2017, 6:56 PM CST for 4 counties in Missouri. It was in force for 34 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: Feb 28, 2017, 6:56 PM CST (00:56 UTC)
Expired: Feb 28, 2017, 7:30 PM CST
In force: 34 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Iron County, MO, Madison County, MO, Reynolds County, MO, Saint Francois County, MO

The radar

The St Louis radar (KLSX), 127 km from the middle of the area, began a volume at 01:00 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
Feb 28, 7:16 PM CST	TORNADO	12 Wnw Fredericktown, MO	EF0 TORNADO WITH MAXIMUM WIND SPEED OF 85 MPH. 4.5 MILES LONG AND 50 YARDS WIDE. MAINLY TREE DAMAGE NOTED ALONG PATH... WITH ONE BARN DESTROYED.
Feb 28, 7:23 PM CST	TSTM WND DMG	5 E Roselle, MO	BARN DESTROYED ALONG MADISON COUNTY ROAD 529. TIME ESTIMATED FROM RADAR.

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
Feb 28, 2:19 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.9 hours before the alert went out and 290 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: 1117 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 931 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 341 m²/s²
0-3 km storm-relative helicity: 315 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 8.2

Open this sounding in Storm Lab

The text

As transmitted.

900 
WFUS53 KLSX 010056
TORLSX
MOC093-123-179-187-010130-
/O.NEW.KLSX.TO.W.0003.170301T0056Z-170301T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
656 PM CST TUE FEB 28 2017

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northeastern Iron County in southeastern Missouri...
  Northeastern Reynolds County in southeastern Missouri...
  Northwestern Madison County in southeastern Missouri...
  Southwestern St. Francois County in southeastern Missouri...

* Until 730 PM CST.

* At 655 PM CST, a severe thunderstorm capable of producing a tornado
  was located near Glover, moving northeast at 60 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...
  Farmington, Fredericktown, Ironton, Pilot Knob, Iron Mountain Lake,
  Arcadia, Junction City, Cobalt, Knob Lick, Glover, Roselle,
  Catherine Place, Hogan, Granite and Chloride.

This also includes  Fort Davidson Historic Site, Elephant Rocks State
Park, and Taum Sauk Mountain State Park.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3744 9080 3759 9088 3777 9039 3754 9026
TIME...MOT...LOC 0055Z 246DEG 52KT 3752 9074 

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

$$

Kanofsky

4 follow-up statements

126 
WWUS53 KLSX 010101
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
701 PM CST TUE FEB 28 2017

MOC179-010111-
/O.CAN.KLSX.TO.W.0003.000000T0000Z-170301T0130Z/
Reynolds MO-
701 PM CST TUE FEB 28 2017

...THE TORNADO WARNING FOR NORTHEASTERN REYNOLDS COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 900 PM CST for southeastern
Missouri.

LAT...LON 3763 9077 3777 9039 3754 9026 3748 9077
TIME...MOT...LOC 0101Z 246DEG 52KT 3756 9064 

$$

MOC093-123-187-010130-
/O.CON.KLSX.TO.W.0003.000000T0000Z-170301T0130Z/
Iron MO-Madison MO-St. Francois MO-
701 PM CST TUE FEB 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CST FOR
NORTHEASTERN IRON...NORTHWESTERN MADISON AND SOUTHWESTERN ST.
FRANCOIS COUNTIES IN SOUTHEASTERN MISSOURI...
    
At 701 PM CST, a severe thunderstorm capable of producing a tornado
was located over Arcadia, moving northeast at 60 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...
Farmington, Fredericktown, Ironton, Pilot Knob, Iron Mountain Lake,
Arcadia, Junction City, Cobalt, Knob Lick, Roselle, Catherine Place,
Hogan and Granite.

This also includes  Fort Davidson Historic Site and Elephant Rocks
State Park.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3763 9077 3777 9039 3754 9026 3748 9077
TIME...MOT...LOC 0101Z 246DEG 52KT 3756 9064 

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

$$

Kanofsky

491 
WWUS53 KLSX 010109
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
709 PM CST TUE FEB 28 2017

MOC093-123-187-010130-
/O.CON.KLSX.TO.W.0003.000000T0000Z-170301T0130Z/
Iron MO-Madison MO-St. Francois MO-
709 PM CST TUE FEB 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CST FOR
NORTHEASTERN IRON...NORTHWESTERN MADISON AND SOUTHWESTERN ST.
FRANCOIS COUNTIES IN SOUTHEASTERN MISSOURI...
    
At 709 PM CST, a severe thunderstorm capable of producing a tornado
was located over Roselle, moving northeast at 60 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...
Farmington, Fredericktown, Ironton, Pilot Knob, Iron Mountain Lake,
Arcadia, Junction City, Roselle, Knob Lick and Catherine Place.

This also includes  Fort Davidson Historic Site.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3756 9027 3751 9065 3767 9066 3777 9039
TIME...MOT...LOC 0109Z 246DEG 52KT 3761 9049 

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

$$

Kanofsky

600 
WWUS53 KLSX 010118
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
718 PM CST TUE FEB 28 2017

MOC093-010127-
/O.CAN.KLSX.TO.W.0003.000000T0000Z-170301T0130Z/
Iron MO-
718 PM CST TUE FEB 28 2017

...THE TORNADO WARNING FOR NORTHEASTERN IRON COUNTY IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 900 PM CST for southeastern
Missouri.

LAT...LON 3760 9054 3760 9053 3764 9053 3764 9054
      3771 9054 3777 9039 3756 9027 3754 9054
TIME...MOT...LOC 0117Z 246DEG 52KT 3766 9035 

$$

MOC123-187-010130-
/O.CON.KLSX.TO.W.0003.000000T0000Z-170301T0130Z/
Madison MO-St. Francois MO-
718 PM CST TUE FEB 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CST FOR
NORTHWESTERN MADISON AND SOUTH CENTRAL ST. FRANCOIS COUNTIES IN
SOUTHEASTERN MISSOURI...
    
At 717 PM CST, a severe thunderstorm capable of producing a tornado
was located over Knob Lick, moving northeast at 60 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...
Farmington, Fredericktown, Junction City, Roselle, Knob Lick and
Catherine Place.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3760 9054 3760 9053 3764 9053 3764 9054
      3771 9054 3777 9039 3756 9027 3754 9054
TIME...MOT...LOC 0117Z 246DEG 52KT 3766 9035 

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

$$

Kanofsky

385 
WWUS53 KLSX 010132
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
732 PM CST TUE FEB 28 2017

MOC123-187-010141-
/O.EXP.KLSX.TO.W.0003.000000T0000Z-170301T0130Z/
Madison MO-St. Francois MO-
732 PM CST TUE FEB 28 2017

...THE TORNADO WARNING FOR NORTHWESTERN MADISON AND SOUTH CENTRAL ST.
FRANCOIS COUNTIES IN SOUTHEASTERN MISSOURI HAS EXPIRED...
    
The Tornado Warning that was previously in effect has been reissued 
and is in effect until 800 PM CST. Please refer to that bulletin for 
the latest severe weather information.

A tornado watch remains in effect until 900 PM CST for southeastern
Missouri.

LAT...LON 3760 9054 3760 9053 3764 9053 3764 9054
      3771 9054 3777 9039 3756 9027 3754 9054
TIME...MOT...LOC 0131Z 246DEG 52KT 3774 9012 

$$

Kanofsky

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 6:14 PM CST	Tornado Warning	LSX	Reynolds	30 min
Feb 28, 6:16 PM CST	Severe Thunderstorm Warning	LSX	Iron, Reynolds	44 min
Feb 28, 6:59 PM CST	Severe Thunderstorm Warning	LSX	Iron, Madison, Sainte Genevieve, Saint Francois	46 min
Feb 28, 7:30 PM CST	Tornado Warning	LSX	Madison, Sainte Genevieve, Saint Francois	19 min
Feb 28, 7:34 PM CST	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	17 min
Feb 28, 7:57 PM CST	Severe Thunderstorm Warning	LSX	Marion, Monroe, Shelby	48 min
Feb 28, 8:29 PM CST	Severe Thunderstorm Warning	LSX	Marion, Ralls	33 min
Feb 28, 8:37 PM CST	Tornado Warning	LSX	Marion, Ralls	27 min
Feb 28, 9:19 PM CST	Severe Thunderstorm Warning	LSX	Madison	17 min
Feb 28, 9:23 PM CST	Tornado Warning	LSX	Madison	11 min
Feb 28, 11:04 PM CST	Severe Thunderstorm Warning	LSX	Boone, Moniteau	41 min
Mar 1, 1:43 AM CST	Special Weather Statement	LSX	Crawford, Franklin, Washington	47 min
Mar 1, 1:56 AM CST	Special Weather Statement	LSX	Saint Louis, City of Saint Louis	34 min
Mar 1, 2:15 AM CST	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	34 min
Mar 1, 2:17 AM CST	Special Weather Statement	LSX	Iron, Sainte Genevieve, Saint Francois, Washington	43 min
Mar 1, 3:11 AM CST	Severe Thunderstorm Warning	LSX	Iron, Reynolds	36 min
Mar 1, 3:37 AM CST	Special Weather Statement	LSX	Madison	23 min

Nearby

Tornado Warnings in Missouri, 2017 Every tornado warning in 2017 Tornadoes 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.