Alert archive / Illinois / Tornado Warnings in 2018

Tornado Warning 11, NWS St. Louis, MO

July 19, 2018Adams County, Illinois

NWS St. Louis, MO issued this tornado warning at Jul 19, 2018, 7:26 PM CDT for Adams County, Illinois. It was in force for 37 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: Jul 19, 2018, 7:26 PM CDT (00:26 UTC)
Expired: Jul 19, 2018, 8:03 PM CDT
In force: 37 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Adams County, IL

The radar

The Lincoln radar (KILX), 149 km from the middle of the area, began a volume at 00:27 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

Time	Report	Where	Remark
Jul 19, 7:40 PM CDT	TSTM WND DMG	Loraine, IL	TREE LIMBS DOWN SOME UP TO 24 INCHES IN DIAMETER. POWER OUT ACROSS MUCH OF NORTH CENTRAL ADAMS COUNTY.
Jul 19, 7:53 PM CDT	TSTM WND DMG	Quincy, IL	2 FOOT DIAMETER TREE BLOWN DOWN ON THE NORTH SIDE OF QUINCY.
Jul 19, 8:00 PM CDT	HAIL 1.5	Camp Point, IL
Jul 19, 8:01 PM CDT	HAIL 1	Camp Point, IL	REPORT VIA TWITTER.

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.

Issued	Product	Office	Lasted
Jul 19, 6:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 0.4 hours before the alert went out and 177 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: 1195 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 653 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 291 m²/s²
0-3 km storm-relative helicity: 344 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

As transmitted.

029 
WFUS53 KLSX 200026
TORLSX
ILC001-200115-
/O.NEW.KLSX.TO.W.0011.180720T0026Z-180720T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
726 PM CDT THU JUL 19 2018

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northern Adams County in west central Illinois...

* Until 815 PM CDT.
    
* At 726 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles southeast of Warsaw, moving southeast at 40
  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...
  Mendon around 745 PM CDT.
  Golden around 755 PM CDT.
  Camp Point around 800 PM CDT.
  Clayton around 805 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Coatsburg, Ursa, Paloma, Lima, Columbus, Loraine, Woodville, Fowler,
La Prairie and Chatton.

This includes Interstate 172 between exits 15 and 19.
 
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 4019 9091 4011 9092 3993 9092 3994 9139
      4020 9145
TIME...MOT...LOC 0026Z 317DEG 34KT 4028 9133 

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

$$

BSH

2 follow-up statements

522 
WWUS53 KLSX 200050
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
750 PM CDT THU JUL 19 2018

ILC001-200115-
/O.CON.KLSX.TO.W.0011.000000T0000Z-180720T0115Z/
Adams IL-
750 PM CDT THU JUL 19 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
NORTHEASTERN ADAMS COUNTY...
    
At 750 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Golden, moving southeast at 40 mph.

HAZARD...Tornado and half dollar 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...
  Golden around 755 PM CDT.
  Camp Point around 800 PM CDT.
  Clayton around 805 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Coatsburg, Paloma, Columbus, Loraine, Chatton, Kellerville and La
Prairie.

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 4017 9106 4011 9092 3993 9092 3994 9119
      4017 9125
TIME...MOT...LOC 0050Z 317DEG 34KT 4011 9113 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

BSH

989 
WWUS53 KLSX 200103
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
803 PM CDT THU JUL 19 2018

ILC001-200112-
/O.CAN.KLSX.TO.W.0011.000000T0000Z-180720T0115Z/
Adams IL-
803 PM CDT THU JUL 19 2018

...THE TORNADO WARNING FOR NORTHEASTERN ADAMS COUNTY IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.  However 
large hail and strong winds are still possible with this 
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
west central Illinois.

Remember, a Severe Thunderstorm Warning still remains in effect for
Adams County. Quarter size hail has been reported with this storm.

LAT...LON 4017 9106 4011 9092 3993 9092 3994 9119
      4017 9125
TIME...MOT...LOC 0101Z 317DEG 34KT 4003 9103 

$$

BSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 7:04 PM CDT	Severe Thunderstorm Warning	LSX	Adams	56 min
Jul 19, 7:53 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	67 min
Jul 19, 7:56 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	64 min
Jul 19, 8:50 PM CDT	Special Weather Statement	LSX	Adams	25 min
Jul 19, 8:54 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Pike	66 min
Jul 19, 8:58 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	62 min
Jul 19, 9:18 PM CDT	Special Weather Statement	LSX	Adams	27 min
Jul 19, 9:38 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey	52 min
Jul 19, 9:41 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Pike	49 min
Jul 19, 10:19 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey, Macoupin, Madison	41 min
Jul 19, 10:59 PM CDT	Special Weather Statement	LSX	Macoupin, Madison	46 min
Jul 19, 11:36 PM CDT	Special Weather Statement	LSX	Bond, Clinton, Fayette, Montgomery	39 min
Jul 20, 12:11 AM CDT	Tornado Warning	LSX	Fayette, Marion	34 min
Jul 20, 12:21 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Marion	39 min

Nearby

Tornado Warnings in Illinois, 2018 Every tornado warning in 2018 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.