Alert archive / Illinois / Tornado Warnings in 2016

Tornado Warning 12, NWS St. Louis, MO

September 16, 2016Randolph County, Illinois

NWS St. Louis, MO issued this tornado warning at Sep 16, 2016, 3:57 PM CDT for Randolph County, Illinois. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 16, 2016, 3:57 PM CDT (20:57 UTC)
Expired
Sep 16, 2016, 4:30 PM CDT
In force
33 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Randolph County, IL

The radar

The St Louis radar (KLSX), 102 km from the middle of the area, began a volume at 20:56 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.0 hours before the alert went out and 267 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2016-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 408 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2016-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
408 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
908 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.3

Open this sounding in Storm Lab

The text

As transmitted.

396 
WFUS53 KLSX 162057
TORLSX
ILC157-162130-
/O.NEW.KLSX.TO.W.0012.160916T2057Z-160916T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
357 PM CDT FRI SEP 16 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL RANDOLPH COUNTY IN SOUTHWESTERN ILLINOIS...

* UNTIL 430 PM CDT.

* AT 356 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER STE. GENEVIEVE...MOVING EAST AT 15 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...
  EVANSVILLE AROUND 425 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
ROOTS... KELLOGG...PRESTON...ELLIS GROVE...WALSH AND NEW PALESTINE.

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 3795 8993 3796 8992 3796 8993 3797 8994
      3796 8999 3801 9005 3801 9006 3802 9008
      3815 8980 3794 8978
TIME...MOT...LOC 2056Z 253DEG 11KT 3800 9002 

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

$$

CARNEY
2 follow-up statements
984 
WWUS53 KLSX 162110
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
410 PM CDT FRI SEP 16 2016

ILC157-162130-
/O.CON.KLSX.TO.W.0012.000000T0000Z-160916T2130Z/
RANDOLPH IL-
410 PM CDT FRI SEP 16 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR CENTRAL
RANDOLPH COUNTY...
    
AT 410 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR STE. GENEVIEVE...MOVING EAST AT 15 MPH.

HAZARD...TORNADO. 

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 TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
CENTRAL RANDOLPH COUNTY...INCLUDING THE FOLLOWING LOCATIONS: ROOTS...
ELLIS GROVE AND NEW PALESTINE.

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 3795 8993 3796 8992 3796 8993 3797 8994
      3796 8998 3802 9001 3809 8979 3794 8978
TIME...MOT...LOC 2110Z 265DEG 12KT 3800 8995 

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

$$

CARNEY
492 
WWUS53 KLSX 162120
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
420 PM CDT FRI SEP 16 2016

ILC157-162130-
/O.EXP.KLSX.TO.W.0012.000000T0000Z-160916T2130Z/
RANDOLPH IL-
420 PM CDT FRI SEP 16 2016

...THE TORNADO WARNING FOR CENTRAL RANDOLPH COUNTY WILL EXPIRE AT 430
PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER SMALL HAIL
AND GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3795 8993 3796 8992 3796 8993 3797 8994
      3796 8998 3802 9001 3809 8979 3794 8978
TIME...MOT...LOC 2118Z 253DEG 11KT 3800 8995 

$$

CARNEY

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 9:26 AM CDTAreal Flood AdvisoryLSXBond, Madison4 hr
Sep 16, 12:04 PM CDTAreal Flood AdvisoryLSXMacoupin4 hr
Sep 16, 2:27 PM CDTSpecial Weather StatementLSXMonroe48 min
Sep 16, 3:07 PM CDTSpecial Weather StatementLSXRandolph38 min
Sep 16, 3:13 PM CDTSevere Thunderstorm WarningLSXMonroe, Randolph, Saint Clair47 min
Sep 16, 3:30 PM CDTTornado WarningLSXRandolph30 min
Sep 16, 4:25 PM CDTAreal Flood AdvisoryLSXMonroe, Randolph6 hr
Sep 16, 5:00 PM CDTSevere Thunderstorm WarningLSXRandolph30 min
Sep 16, 5:07 PM CDTTornado WarningLSXRandolph38 min

Nearby

Tornado Warnings in Illinois, 2016Every tornado warning in 2016Tornadoes in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.