Alert archive / Illinois / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 79, NWS Lincoln, IL

June 20, 2016DeWitt County, Logan County, Macon County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 20, 2016, 9:44 PM CDT for DeWitt County, Logan County, Macon County, Illinois. It was in force for 31 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
Jun 20, 2016, 9:44 PM CDT (02:44 UTC)
Expired
Jun 20, 2016, 10:15 PM CDT
In force
31 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties DeWitt County, IL, Logan County, IL, Macon County, IL

The radar

The Lincoln radar (KILX), 19 km from the middle of the area, began a volume at 02:44 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 20, 3:03 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.7 hours before the alert went out and 44 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 00:00Z on 2016-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2024 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 00:00Z on 2016-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.19395878Sfc1 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
2024 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1599 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
157 m²/s²
Significant tornado parameter
0.4
Supercell composite
6.2

Open this sounding in Storm Lab

The text

As transmitted.

813 
WUUS53 KILX 210244
SVRILX
ILC039-107-115-210315-
/O.NEW.KILX.SV.W.0079.160621T0244Z-160621T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
944 PM CDT MON JUN 20 2016

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LOGAN COUNTY IN CENTRAL ILLINOIS...
  NORTHWESTERN MACON COUNTY IN CENTRAL ILLINOIS...
  DE WITT COUNTY IN CENTRAL ILLINOIS...

* UNTIL 1015 PM CDT

* AT 944 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER BEASON...OR
  8 MILES EAST OF LINCOLN...MOVING EAST AT 40 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  CLINTON...FARMER CITY...MAROA...ATLANTA...WARRENSBURG...WAPELLA...
  WAYNESVILLE...KENNEY...CHESTNUT...BEASON...DE WITT...LANE...
  MIDLAND CITY...HALLSVILLE...CLINTON LAKE DAM...
  WELDON SPRINGS STATE PARK AND ROWELL.

THIS INCLUDES INTERSTATE 55 BETWEEN MILE MARKERS 136 AND 141.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4007 8933 4028 8926 4026 8864 3991 8904
TIME...MOT...LOC 0244Z 287DEG 36KT 4014 8920 

HAIL...<.75IN
WIND...60MPH
 
$$

SMITH
2 follow-up statements
792 
WWUS53 KILX 210305
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1005 PM CDT MON JUN 20 2016

ILC107-210315-
/O.CAN.KILX.SV.W.0079.000000T0000Z-160621T0315Z/
LOGAN-
1005 PM CDT MON JUN 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LOGAN COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 4005 8914 4026 8899 4027 8886 4026 8864
      3998 8899
TIME...MOT...LOC 0305Z 287DEG 36KT 4008 8894 

$$

ILC039-115-210315-
/O.CON.KILX.SV.W.0079.000000T0000Z-160621T0315Z/
MACON-DE WITT-
1005 PM CDT MON JUN 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR NORTH CENTRAL MACON AND CENTRAL DE WITT COUNTIES...

AT 1005 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER MAROA...OR
NEAR CLINTON...MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
CLINTON...FARMER CITY...MAROA...WAPELLA...KENNEY...DE WITT...LANE...
ROWELL...CLINTON LAKE DAM AND WELDON SPRINGS STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4005 8914 4026 8899 4027 8886 4026 8864
      3998 8899
TIME...MOT...LOC 0305Z 287DEG 36KT 4008 8894 

HAIL...<.75IN
WIND...60MPH
 
$$

SMITH
403 
WWUS53 KILX 210310
SVSILX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1010 PM CDT MON JUN 20 2016

ILC039-115-210320-
/O.EXP.KILX.SV.W.0079.000000T0000Z-160621T0315Z/
MACON-DE WITT-
1010 PM CDT MON JUN 20 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MACON AND
CENTRAL DE WITT COUNTIES WILL EXPIRE AT 1015 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY
WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4005 8914 4026 8899 4027 8886 4026 8864
      3998 8899
TIME...MOT...LOC 0306Z 287DEG 36KT 4008 8894 

$$

SMITH

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 7:52 PM CDTSpecial Weather StatementILXCass23 min
Jun 20, 8:38 PM CDTSpecial Weather StatementILXMason, Menard52 min
Jun 20, 8:42 PM CDTSevere Thunderstorm WarningILXCass, Logan, Mason, Menard33 min
Jun 20, 8:55 PM CDTSevere Thunderstorm WarningILXChampaign, McLean, Piatt50 min
Jun 20, 9:04 PM CDTSevere Thunderstorm WarningILXDeWitt, Logan, McLean, Macon, Piatt, Tazewell41 min
Jun 20, 9:11 PM CDTSevere Thunderstorm WarningILXLogan, Menard19 min
Jun 20, 9:36 PM CDTSevere Thunderstorm WarningILXChampaign, DeWitt, McLean, Macon, Piatt, Vermilion54 min
Jun 20, 9:40 PM CDTSevere Thunderstorm WarningILXVermilion35 min
Jun 20, 10:27 PM CDTSevere Thunderstorm WarningILXEdgar, Vermilion33 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2016Every severe thunderstorm warning 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.