Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 10, NWS St. Louis, MO

June 28, 2018Saint Clair County, Illinois

NWS St. Louis, MO issued this tornado warning at Jun 28, 2018, 5:54 PM CDT for Saint Clair County, Illinois. It was in force for 17 min. 10 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 28, 2018, 5:54 PM CDT (22:54 UTC)
Expired: Jun 28, 2018, 6:11 PM CDT
In force: 17 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Saint Clair County, IL

The radar

The St Louis radar (KLSX), 58 km from the middle of the area, began a volume at 22:57 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, 5:58 PM CDT	FUNNEL CLOUD	Caseyville, IL	FUNNEL CLOUD SPOTTED AT THE INTERSECTION OF BETHEL MINE ROAD AND NORTH ILLINOIS STREET IN CASEYVILLE.
Jun 28, 5:58 PM CDT	TSTM WND DMG	1 Se Fairview Heights, IL	DELAYED REPORT: LARGE HEALTHY TREE SNAPPED AT THE BASE NEAR THE INTERSECTION OF S RUBY LANE AND ST. CLAIR DRIVE. PHOTO SUBMITTED VIA SOCIAL MEDIA.
Jun 28, 6:00 PM CDT	TSTM WND GST 50	1 Se Sauget, IL
Jun 28, 6:02 PM CDT	TSTM WND DMG	1 Ese Belleville, IL	REPORT VIA SOCIAL MEDIA OF TREE UPROOTED. TIME ESTIMATED FROM RADAR.
Jun 28, 6:02 PM CDT	TSTM WND DMG	2 Se Swansea, IL	DELAYED REPORT: FEW LIMBS DOWN AT THE 1700 BLOCK OF LASALLE.
Jun 28, 6:02 PM CDT	TSTM WND DMG	Fairview Heights, IL	SEVERAL TREES DOWN.
Jun 28, 6:03 PM CDT	FUNNEL CLOUD	1 N Millstadt, IL	SPOTTER SAW FUNNEL FROM THE CITY OF COLUMBIA, IL.
Jun 28, 6:03 PM CDT	TSTM WND DMG	2 Ese Fairview Heights, IL	MINOR DAMAGE TO AN APARTMENT COMPLEX ALONG JOSEPH DRIVE IN FAIRVIEW HEIGHTS. TIME ESTIMATED FROM RADAR.
Jun 28, 6:05 PM CDT	TSTM WND DMG	1 S Scott Afb, IL	DELAYED REPORT: SMALL TREE SNAPPED AT THE BASE. BASED IS JUDGED TO BE 10 TO 12 INCHES IN DIAMETER.
Jun 28, 6:05 PM CDT	TSTM WND DMG	2 E Centreville, IL	PUBLIC REPORT VIA SOCIAL MEDIA OF TREES AND POWER POLES SNAPPED OFF. 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
Jun 28, 1:04 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 215 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: 7 J/kg
Mixed-layer CIN: -572 J/kg
Mixed-layer LCL: 1140 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

866 
WFUS53 KLSX 282254
TORLSX
ILC163-282330-
/O.NEW.KLSX.TO.W.0010.180628T2254Z-180628T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
554 PM CDT THU JUN 28 2018

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northwestern St. Clair County in southwestern Illinois...

* Until 630 PM CDT.

* At 554 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Alorton, moving southeast at 30 mph.

  HAZARD...Tornado.

  SOURCE...Weather spotters reported funnel cloud.

  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...
  Swansea and Shiloh around 605 PM CDT.
  Belleville and Millstadt around 610 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Sauget.

This includes Interstate 64 in Illinois between exits 9 and 12.
 
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 3852 8983 3840 9013 3859 9019 3863 9016
      3866 9009 3866 9005
TIME...MOT...LOC 2254Z 332DEG 27KT 3860 9009 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Kanofsky

2 follow-up statements

709 
WWUS53 KLSX 282301
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
601 PM CDT THU JUN 28 2018

ILC163-282330-
/O.CON.KLSX.TO.W.0010.000000T0000Z-180628T2330Z/
St. Clair IL-
601 PM CDT THU JUN 28 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM CDT FOR CENTRAL
ST. CLAIR COUNTY...
        
At 601 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Belleville, moving south at 45 mph.

HAZARD...Tornado.

SOURCE...Weather spotters reported a funnel cloud.

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...
  Millstadt around 605 PM CDT.

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 3853 9017 3860 9004 3850 8987 3840 9013
TIME...MOT...LOC 2301Z 338DEG 37KT 3852 9006 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Kanofsky

040 
WWUS53 KLSX 282311
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
611 PM CDT THU JUN 28 2018

ILC163-282320-
/O.CAN.KLSX.TO.W.0010.000000T0000Z-180628T2330Z/
St. Clair IL-
611 PM CDT THU JUN 28 2018

...THE TORNADO WARNING FOR CENTRAL ST. CLAIR COUNTY IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 800 PM CDT for
southwestern Illinois.

Remember, a Severe Thunderstorm Warning still remains in effect for
portions of this area until 645 PM CDT.

LAT...LON 3853 9017 3860 9004 3850 8987 3840 9013
TIME...MOT...LOC 2307Z 332DEG 27KT 3846 9002 

$$

Kanofsky

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 2:37 PM CDT	Severe Thunderstorm Warning	LSX	Adams	53 min
Jun 28, 3:21 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	69 min
Jun 28, 3:52 PM CDT	Excessive Heat Warning	LSX	Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more	3 days
Jun 28, 4:00 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Pike	60 min
Jun 28, 4:18 PM CDT	Special Weather Statement	LSX	Greene, Macoupin	57 min
Jun 28, 4:35 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	40 min
Jun 28, 4:39 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey, Macoupin, Montgomery, Pike	66 min
Jun 28, 5:02 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey, Macoupin, Madison	73 min
Jun 28, 5:22 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Macoupin, Madison, Marion and 4 more	83 min
Jun 28, 5:29 PM CDT	Tornado Warning	LSX	Madison	16 min
Jun 28, 5:59 PM CDT	Areal Flood Advisory	LSX	Jersey, Madison	3 hr
Jun 28, 6:21 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Marion, Monroe, Randolph, Saint Clair, Washington	69 min
Jun 28, 6:48 PM CDT	Areal Flood Advisory	LSX	Bond, Clinton, Fayette, Madison, Marion, Monroe and 2 more	3 hr
Jun 28, 6:56 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph	64 min

Nearby

Tornado Warnings in Illinois, 2018 Every tornado warning in 2018 Tornadoes 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.