Alert archive / Indiana / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 21, NWS Chicago, IL

May 9, 2018Lake County, Newton County, Indiana; Kankakee County, Illinois

NWS Chicago, IL issued this severe thunderstorm warning at May 9, 2018, 6:02 PM CDT for Lake County, Newton County, Indiana; Kankakee County, Illinois. It was in force for 28 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: May 9, 2018, 6:02 PM CDT (23:02 UTC)
Expired: May 9, 2018, 6:30 PM CDT
In force: 28 min
Issued by: NWS Chicago, IL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Kankakee County, IL, Lake County, IN, Newton County, IN

The radar

The Chicago radar (KLOT), 67 km from the middle of the area, began a volume at 23:02 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, 11.0 hours before the alert went out and 148 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1485 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 347 m²/s²
0-3 km storm-relative helicity: 285 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

113 
WUUS53 KLOT 092302
SVRLOT
ILC091-INC089-111-092330-
/O.NEW.KLOT.SV.W.0021.180509T2302Z-180509T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Chicago/Romeoville Il
602 PM CDT WED MAY 9 2018

The National Weather Service in Chicago has issued a

* Severe Thunderstorm Warning for...
  Eastern Kankakee County in northeastern Illinois...
  Northwestern Newton County in northwestern Indiana...
  Southern Lake County in northwestern Indiana...

* Until 630 PM CDT

* At 602 PM CDT, severe thunderstorms were located along a line
  extending from near Grant Park to Chebanse, moving east at 30 mph.

  HAZARD...70 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. 

* Locations impacted include...
  Kankakee, Bradley, Lowell, Momence, Thayer, Sumava Resorts, Conrad,
  Lake Village, Grant Park, St. Anne, Chebanse, Aroma Park, Hopkins
  Park, Sun River Terrace and Schneider.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4131 8722 4102 8744 4100 8802 4130 8765
TIME...MOT...LOC 2302Z 262DEG 28KT 4127 8762 4102 8790 

HAIL...1.00IN
WIND...70MPH
 
$$

FRIEDLEIN

1 follow-up statement

170 
WWUS53 KLOT 092313
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville Il
613 PM CDT WED MAY 9 2018

ILC091-INC089-111-092330-
/O.CON.KLOT.SV.W.0021.000000T0000Z-180509T2330Z/
Kankakee IL-Newton IN-Lake IN-
613 PM CDT WED MAY 9 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR EASTERN KANKAKEE...NORTHWESTERN NEWTON AND SOUTHERN LAKE
COUNTIES...

At 612 PM CDT, severe thunderstorms were located along a line
extending from 6 miles northeast of Grant Park to near Aroma Park, 
moving east at 30 mph. These storms have a history of wind gusts in 
excess of 60 mph near Kankakee.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Kankakee, Lowell, Momence, Thayer, Sumava Resorts, Conrad, Lake
Village, Grant Park, St. Anne, Chebanse, Aroma Park, Hopkins Park,
Sun River Terrace and Schneider.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4131 8722 4102 8744 4100 8796 4114 8778
      4130 8760
TIME...MOT...LOC 2312Z 262DEG 28KT 4128 8754 4103 8782 

HAIL...1.00IN
WIND...70MPH
 
$$

FRIEDLEIN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 8:25 AM CDT	Special Weather Statement	LOT	Jasper, Newton	35 min
May 9, 6:18 PM CDT	Severe Thunderstorm Warning	LOT	Jasper, Lake, Newton, Porter	42 min
May 9, 6:34 PM CDT	Severe Thunderstorm Warning	LOT	Porter	26 min
May 9, 6:58 PM CDT	Special Weather Statement	LOT	Jasper, Newton	62 min
May 9, 3:40 AM CDT	Special Weather Statement	LOT	Ogle	20 min
May 9, 4:32 PM CDT	Special Weather Statement	LOT	Lake	28 min
May 9, 4:35 PM CDT	Special Weather Statement	LOT	Lake	40 min
May 9, 4:52 PM CDT	Special Marine Warning	LOT		53 min
May 9, 4:57 PM CDT	Special Weather Statement	LOT	DuPage	33 min
May 9, 5:02 PM CDT	Severe Thunderstorm Warning	LOT	DuPage	16 min
May 9, 5:15 PM CDT	Special Weather Statement	LOT	Cook	45 min
May 9, 5:25 PM CDT	Special Weather Statement	LOT	Ford	50 min
May 9, 5:26 PM CDT	Special Marine Warning	LOT		64 min
May 9, 5:34 PM CDT	Special Weather Statement	LOT	Cook	11 min
May 9, 5:48 PM CDT	Special Weather Statement	LOT	Cook	27 min
May 9, 5:49 PM CDT	Special Weather Statement	LOT	Kankakee	26 min
May 9, 5:52 PM CDT	Severe Thunderstorm Warning	LOT	Ford, Iroquois, Livingston	38 min
May 9, 6:33 PM CDT	Special Weather Statement	LOT	Ford	42 min
May 9, 6:54 PM CDT	Special Weather Statement	LOT	Iroquois	51 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2018 Severe Thunderstorm Warnings in Illinois, 2018 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.