Alert archive / Missouri / Tornado Warnings in 2017

Tornado Warning 6, NWS St. Louis, MO

February 28, 2017Marion County, Ralls County, Missouri; Adams County, Pike County, Illinois

NWS St. Louis, MO issued this tornado warning at Feb 28, 2017, 8:37 PM CST for Marion County, Ralls County, Missouri; Adams County, Pike County, Illinois. It was in force for 27 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: Feb 28, 2017, 8:37 PM CST (02:37 UTC)
Expired: Feb 28, 2017, 9:04 PM CST
In force: 27 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Adams County, IL, Pike County, IL, Marion County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 124 km from the middle of the area, began a volume at 02:37 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, 8:46 PM CST	HAIL 1	Hannibal, MO
Feb 28, 8:50 PM CST	TSTM WND DMG	2 Nw Hannibal, MO	DELAYED REPORT. SHINGLES BLOWN OFF OF A ROOF AND A FEW BOARDS BLOWN OFF OF A BARN. BUILDINGS ARE LOCATED ALONG STATE ROAD 168 APPROXIMATELY 2 MILES NORTHWEST OF HANNIBAL. TIME ESTIMATED FROM RADAR.
Feb 28, 8:50 PM CST	HAIL 1	Hannibal, MO
Feb 28, 8:50 PM CST	HAIL 1.25	2 Nw Hannibal, MO	DELAYED REPORT. SHINGLES BLOWN OFF OF A ROOF AND A FEW BOARDS BLOWN OFF OF A BARN. BUILDINGS ARE LOCATED ALONG STATE ROAD 168 APPROXIMATELY 2 MILES NORTHWEST OF HANNIBAL. TIME ESTIMATED FROM RADAR.
Feb 28, 8:55 PM CST	HAIL 1	Payson, IL

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, 2:57 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 2.6 hours before the alert went out and 226 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: 23 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1185 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

460 
WFUS53 KLSX 010237
TORLSX
ILC001-149-MOC127-173-010315-
/O.NEW.KLSX.TO.W.0006.170301T0237Z-170301T0315Z/

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

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northwestern Pike County in west central Illinois...
  South central Adams County in west central Illinois...
  Northeastern Ralls County in northeastern Missouri...
  Southeastern Marion County in northeastern Missouri...

* Until 915 PM CST.

* At 837 PM CST, a severe thunderstorm capable of producing a tornado
  was located over Rensselaer, moving east at 55 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. 

* This dangerous storm will be near...
  Hannibal around 850 PM CST. 
  Fall Creek around 855 PM CST. 
  Payson around 900 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Ilasco, Seehorn, Saverton, Kinderhook, Plainville and Hull.

This includes the following highways...
 Interstate 172 near exit 2.
 Interstate 72 between exits 4 and 10.

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.

&&

LAT...LON 3964 9111 3959 9158 3969 9163 3990 9123
TIME...MOT...LOC 0237Z 247DEG 47KT 3966 9156 

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

$$

Britt

2 follow-up statements

221 
WWUS53 KLSX 010252
SVSLSX

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

ILC001-149-MOC127-173-010315-
/O.CON.KLSX.TO.W.0006.000000T0000Z-170301T0315Z/
Pike IL-Adams IL-Ralls MO-Marion MO-
852 PM CST TUE FEB 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CST FOR
NORTHWESTERN PIKE AND SOUTH CENTRAL ADAMS COUNTIES IN WEST CENTRAL
ILLINOIS...NORTHEASTERN RALLS AND SOUTHEASTERN MARION COUNTIES IN
NORTHEASTERN MISSOURI...
        
At 850 PM CST, a severe thunderstorm capable of producing a tornado
was located over Hannibal, moving east at 60 mph.

HAZARD...Tornado and quarter size hail. 

SOURCE...Weather spotters reported a funnel cloud.  Broadcast media 
         reported a funnel to the west of Hannibal with this storm.

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. 

This dangerous storm will be near...
  Payson around 900 PM CST. 

Other locations impacted by this tornadic thunderstorm include
Ilasco, Seehorn, Saverton, Kinderhook, Plainville and Hull.

This includes the following highways...
 Interstate 172 near exit 2.
 Interstate 72 between exits 4 and 10.

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.

&&

LAT...LON 3960 9148 3973 9149 3990 9123 3964 9111
TIME...MOT...LOC 0250Z 250DEG 54KT 3972 9135 

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

$$

Britt

975 
WWUS53 KLSX 010304
SVSLSX

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

ILC001-149-MOC127-173-010314-
/O.CAN.KLSX.TO.W.0006.000000T0000Z-170301T0315Z/
Pike IL-Adams IL-Ralls MO-Marion MO-
904 PM CST TUE FEB 28 2017

...THE TORNADO WARNING FOR NORTHWESTERN PIKE AND SOUTH CENTRAL ADAMS
COUNTIES IN WEST CENTRAL ILLINOIS...NORTHEASTERN RALLS AND
SOUTHEASTERN MARION COUNTIES IN NORTHEASTERN MISSOURI IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
moved out of the warned area. Therefore, the warning has been 
cancelled.

A tornado watch remains in effect until 1000 PM CST for west central
Illinois...and northeastern Missouri. A tornado watch also remains in
effect until 400 AM CST for west central Illinois...and northeastern
Missouri.

LAT...LON 3960 9148 3973 9149 3990 9123 3964 9111
TIME...MOT...LOC 0303Z 247DEG 47KT 3986 9104 

$$

Britt

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, 6:56 PM CST	Tornado Warning	LSX	Iron, Madison, Reynolds, Saint Francois	34 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, 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
Feb 28, 6:14 PM CST	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair, Washington	46 min
Feb 28, 6:22 PM CST	Severe Thunderstorm Warning	LSX	Fayette	23 min
Feb 28, 6:57 PM CST	Severe Thunderstorm Warning	LSX	Clinton, Marion, Washington	48 min
Feb 28, 8:08 PM CST	Tornado Warning Tornado observed	LSX	Randolph	14 min
Feb 28, 9:07 PM CST	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	38 min
Feb 28, 9:23 PM CST	Tornado Warning	LSX	Brown, Pike	22 min
Mar 1, 2:39 AM CST	Severe Thunderstorm Warning	LSX	Clinton, Washington	25 min

Nearby

Tornado Warnings in Missouri, 2017 Tornado Warnings in Illinois, 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.