Alert archive / Illinois / Tornado Warnings in 2017

Tornado Warning 22, NWS Lincoln, IL

October 14, 2017Schuyler County, Illinois

NWS Lincoln, IL issued this tornado warning at Oct 14, 2017, 6:33 PM CDT for Schuyler County, Illinois. It was in force for 27 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
Oct 14, 2017, 6:33 PM CDT (23:33 UTC)
Expired
Oct 14, 2017, 7:00 PM CDT
In force
27 min
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Schuyler County, IL

The radar

The Lincoln radar (KILX), 112 km from the middle of the area, began a volume at 23:36 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
Oct 14, 5:09 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.6 hours before the alert went out and 153 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, Davenport, at 12:00Z on 2017-10-14Temperature 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, Davenport, at 12:00Z on 2017-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.1939587897Sfc1 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
594 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

839 
WFUS53 KILX 142333
TORILX
ILC169-150000-
/O.NEW.KILX.TO.W.0022.171014T2333Z-171015T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Lincoln IL
633 PM CDT SAT OCT 14 2017

The National Weather Service in Lincoln has issued a

* Tornado Warning for...
  Northwestern Schuyler County in west central Illinois...

* Until 700 PM CDT
    
* At 632 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Augusta, or 15 miles southeast of Carthage, moving
  east at 55 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...
  Littleton around 650 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Huntsville, Ray and Weinberg King State Park.

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 4028 9066 4028 9047 4027 9046 4018 9046
      4018 9091 4029 9091
TIME...MOT...LOC 2332Z 255DEG 47KT 4025 9094 

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

$$

07
2 follow-up statements
841 
WWUS53 KILX 142346
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
646 PM CDT SAT OCT 14 2017

ILC169-150000-
/O.CON.KILX.TO.W.0022.000000T0000Z-171015T0000Z/
Schuyler-
646 PM CDT SAT OCT 14 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHWESTERN SCHUYLER COUNTY...
    
At 646 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Fandon, or 13 miles south of Macomb, moving east at
50 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...
  Littleton around 650 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Huntsville, Ray and Weinberg King State Park.

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 4028 9066 4028 9047 4027 9046 4018 9046
      4018 9091 4029 9091
TIME...MOT...LOC 2346Z 255DEG 45KT 4028 9075 

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

$$

07
973 
WWUS53 KILX 142352
SVSILX

Severe Weather Statement
National Weather Service Lincoln IL
652 PM CDT SAT OCT 14 2017

ILC169-150002-
/O.EXP.KILX.TO.W.0022.000000T0000Z-171015T0000Z/
Schuyler-
652 PM CDT SAT OCT 14 2017

...THE TORNADO WARNING FOR NORTHWESTERN SCHUYLER COUNTY WILL EXPIRE
AT 700 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.

A tornado watch remains in effect until 100 AM CDT for west central
Illinois.

LAT...LON 4028 9066 4028 9047 4027 9046 4018 9046
      4018 9091 4029 9091
TIME...MOT...LOC 2352Z 255DEG 46KT 4027 9073 

$$

07

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 14, 5:45 PM CDTSevere Thunderstorm WarningILXKnox45 min
Oct 14, 6:28 PM CDTSevere Thunderstorm WarningILXKnox, Peoria, Stark47 min
Oct 14, 6:39 PM CDTSevere Thunderstorm WarningILXFulton, Peoria51 min
Oct 14, 6:56 PM CDTFlash Flood WarningILXKnox3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.