Alert archive / Illinois / Tornado Warnings in 2016

Tornado Warning 5, NWS St. Louis, MO

April 27, 2016Montgomery County, Illinois

NWS St. Louis, MO issued this tornado warning at Apr 27, 2016, 6:56 PM CDT for Montgomery County, Illinois. It was in force for 34 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
Apr 27, 2016, 6:56 PM CDT (23:56 UTC)
Expired
Apr 27, 2016, 7:30 PM CDT
In force
34 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Montgomery County, IL

The radar

The Lincoln radar (KILX), 91 km from the middle of the area, began a volume at 23:57 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.9 hours before the alert went out and 114 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 2016-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2016-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 236 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
583 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
236 m²/s²
0-3 km storm-relative helicity
263 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

596 
WFUS53 KLSX 272356
TORLSX
ILC135-280030-
/O.NEW.KLSX.TO.W.0005.160427T2356Z-160428T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
656 PM CDT WED APR 27 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 730 PM CDT
    
* AT 656 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED NEAR WITT...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 MONTGOMERY COUNTY...INCLUDING THE FOLLOWING LOCATIONS:
  OHLMAN AND WENONAH.

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 3928 8946 3936 8954 3936 8953 3935 8952
      3935 8915 3934 8915
TIME...MOT...LOC 2356Z 257DEG 14KT 3933 8941 

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

$$

CARNEY
2 follow-up statements
859 
WWUS53 KLSX 280013
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
713 PM CDT WED APR 27 2016

ILC135-280030-
/O.CON.KLSX.TO.W.0005.000000T0000Z-160428T0030Z/
MONTGOMERY IL-
713 PM CDT WED APR 27 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR EAST
CENTRAL MONTGOMERY COUNTY...
    
AT 711 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR NOKOMIS...MOVING EAST AT 10 MPH.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED ROTATION. AT 705 PM A STORM CHASER REPORTED
         A FUNNEL CLOUD ON THIS STORM ABOUT 7 MILES SOUTH SOUTHEAST
         OF MORRISONVILLE ILLINOIS. 

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...
OHLMAN AND WENONAH. 

LAT...LON 3930 8942 3934 8948 3935 8915 3934 8915
TIME...MOT...LOC 0011Z 256DEG 11KT 3934 8937 

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

$$

CARNEY
116 
WWUS53 KLSX 280030
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
730 PM CDT WED APR 27 2016

ILC135-280040-
/O.EXP.KLSX.TO.W.0005.000000T0000Z-160428T0030Z/
MONTGOMERY IL-
730 PM CDT WED APR 27 2016

...THE TORNADO WARNING FOR EAST CENTRAL MONTGOMERY COUNTY HAS
EXPIRED...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 3930 8942 3934 8948 3935 8915 3934 8915
TIME...MOT...LOC 0028Z 257DEG 14KT 3934 8937 

$$

CARNEY

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 6:29 PM CDTSevere Thunderstorm WarningLSXFayette34 min
Apr 27, 6:32 PM CDTTornado Warning Tornado observedLSXMontgomery28 min
Apr 27, 6:36 PM CDTTornado WarningLSXFayette24 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.