Alert archive / Illinois / Tornado Warnings in 2017

Tornado Warning 13, NWS Chicago, IL

May 26, 2017Ford County, Iroquois County, Livingston County, Illinois

NWS Chicago, IL issued this tornado warning at May 26, 2017, 4:35 PM CDT for Ford County, Iroquois County, Livingston County, Illinois. It was in force for 40 min. 4 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
May 26, 2017, 4:35 PM CDT (21:35 UTC)
Expired
May 26, 2017, 5:15 PM CDT
In force
40 min
Issued by
NWS Chicago, IL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.0 in

Counties Ford County, IL, Iroquois County, IL, Livingston County, IL

The radar

The Lincoln radar (KILX), 106 km from the middle of the area, began a volume at 21:37 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

TimeReportWhereRemark
May 26, 4:35 PM CDTHAIL 1.75Sibley, ILGOLFBALL SIZE HAIL NEAR SIBLEY. TIME ESTIMATED.
May 26, 4:47 PM CDTTSTM WND DMGRoberts, ILTREES WERE BLOWN DOWN SOUTH OF ROBERTS. HALF INCH HAIL WAS ALSO REPORTED IN ROBERTS.
May 26, 5:01 PM CDTHAIL 1.25Buckley, ILHALF DOLLAR SIZE HAIL ON ROUTE 45 SOUTH OF BUCKLEY.
May 26, 5:07 PM CDTHAIL 1.25Paxton, ILFORD COUNTY EMERGENCY MANAGER REPORTED HALF DOLLAR SIZE HAIL JUST NORTH OF PAXTON NEAR I-57

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.

IssuedProductOfficeLasted
May 26, 2:45 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.6 hours before the alert went out and 54 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 2017-05-26Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2017-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 151 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
1724 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
151 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

378 
WFUS53 KLOT 262135
TORLOT
ILC053-075-105-262215-
/O.NEW.KLOT.TO.W.0013.170526T2135Z-170526T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Chicago/Romeoville Il
435 PM CDT FRI MAY 26 2017

The National Weather Service in Chicago has issued a

* Tornado Warning for...
  Southeastern Livingston County in central Illinois...
  Ford County in east central Illinois...
  Southwestern Iroquois County in east central Illinois...

* Until 515 PM CDT
    
* At 435 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Gibson City, moving east at 35 mph.

  HAZARD...Tornado and hail up to two inches in diameter. 

  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...
  Paxton and Buckley around 500 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Melvin, Thawville, Sibley, Loda, Roberts and Elliott.

Including the following interstate...
 I-57 between mile markers 258 and 278.
 
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 4055 8846 4063 8845 4070 8793 4049 8792
      4049 8794 4040 8793 4040 8846
TIME...MOT...LOC 2135Z 282DEG 29KT 4055 8833 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

BMD
3 follow-up statements
863 
WWUS53 KLOT 262145
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville Il
445 PM CDT FRI MAY 26 2017

ILC105-262155-
/O.CAN.KLOT.TO.W.0013.000000T0000Z-170526T2215Z/
Livingston IL-
445 PM CDT FRI MAY 26 2017

...THE TORNADO WARNING FOR SOUTHEASTERN LIVINGSTON COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 800 PM CDT for central and
east central Illinois.

LAT...LON 4041 8837 4054 8838 4062 8836 4062 8824
      4066 8823 4067 8819 4070 8793 4049 8792
      4049 8794 4041 8793 4040 8793
TIME...MOT...LOC 2145Z 282DEG 29KT 4053 8823 

$$

ILC053-075-262215-
/O.CON.KLOT.TO.W.0013.000000T0000Z-170526T2215Z/
Ford IL-Iroquois IL-
445 PM CDT FRI MAY 26 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR SOUTHERN
FORD AND SOUTHWESTERN IROQUOIS COUNTIES...
    
At 445 PM CDT, a severe thunderstorm capable of producing a tornado
was located 8 miles northwest of Paxton, moving east at 35 mph.

HAZARD...Tornado and two inch 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...
  Paxton and Buckley around 500 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Melvin, Thawville, Loda, Roberts and Elliott.

LAT...LON 4041 8837 4054 8838 4062 8836 4062 8824
      4066 8823 4067 8819 4070 8793 4049 8792
      4049 8794 4041 8793 4040 8793
TIME...MOT...LOC 2145Z 282DEG 29KT 4053 8823 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

BMD
303 
WWUS53 KLOT 262157
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville Il
457 PM CDT FRI MAY 26 2017

ILC053-075-262215-
/O.CON.KLOT.TO.W.0013.000000T0000Z-170526T2215Z/
Ford IL-Iroquois IL-
457 PM CDT FRI MAY 26 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
SOUTHEASTERN FORD AND SOUTHWESTERN IROQUOIS COUNTIES...
    
At 456 PM CDT, a severe thunderstorm capable of producing a tornado 
was located near Paxton, moving east at 35 mph. This storm has a 
history of producing funnel clouds.

HAZARD...Tornado and golf ball 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...
  Paxton around 505 PM CDT. 

Other locations impacted by this tornadic thunderstorm include Loda,
Roberts and Melvin.

LAT...LON 4041 8826 4062 8824 4070 8793 4049 8792
      4049 8794 4041 8793 4040 8793
TIME...MOT...LOC 2156Z 292DEG 31KT 4048 8816 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

BMD
480 
WWUS53 KLOT 262219
SVSLOT

Severe Weather Statement
National Weather Service Chicago/Romeoville Il
519 PM CDT FRI MAY 26 2017

ILC053-075-262229-
/O.EXP.KLOT.TO.W.0013.000000T0000Z-170526T2215Z/
Ford IL-Iroquois IL-
519 PM CDT FRI MAY 26 2017

...THE TORNADO WARNING FOR SOUTHEASTERN FORD AND SOUTHWESTERN
IROQUOIS COUNTIES HAS EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been allowed to expire.  However hail and 
gusty winds are still possible with this thunderstorm.

A tornado watch remains in effect until 800 PM CDT for central and
east central Illinois.

LAT...LON 4041 8826 4062 8824 4070 8793 4049 8792
      4049 8794 4041 8793 4040 8793
TIME...MOT...LOC 2219Z 282DEG 29KT 4044 8792 

$$

BMD

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 5:57 AM CDTMarine Dense Fog AdvisoryLOT22 hr
May 26, 3:29 PM CDTSpecial Weather StatementLOTLivingston46 min
May 26, 3:48 PM CDTSevere Thunderstorm WarningLOTLivingston42 min
May 26, 4:06 PM CDTSevere Thunderstorm WarningLOTFord, Livingston39 min
May 26, 5:10 PM CDTSevere Thunderstorm WarningLOTFord, Iroquois45 min
May 26, 6:47 PM CDTSpecial Marine WarningLOT58 min

Nearby

Tornado Warnings in Illinois, 2017Every tornado warning in 2017Tornadoes in 2017

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.