Alert archive / Illinois / Tornado Warnings in 2023

Tornado Warning 22, NWS St. Louis, MO

July 1, 2023Washington County, Illinois

NWS St. Louis, MO issued this tornado warning at Jul 1, 2023, 4:54 PM CDT for Washington County, Illinois. It was in force for 20 min. 1 report 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 1, 2023, 4:54 PM CDT (21:54 UTC)
Expired: Jul 1, 2023, 5:14 PM CDT
In force: 20 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Washington County, IL

The radar

The St Louis radar (KLSX), 131 km from the middle of the area, began a volume at 21:53 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 1, 5:01 PM CDT	TSTM WND DMG	1 Ese Ashley, IL	Multiple large trees down in Ashley. Various locations.

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 1, 12:04 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 216 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: 59 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1240 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

860 
WFUS53 KLSX 012154
TORLSX
ILC189-012230-
/O.NEW.KLSX.TO.W.0022.230701T2154Z-230701T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
454 PM CDT Sat Jul 1 2023

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Southeastern Washington County in south central Illinois...

* Until 530 PM CDT.
    
* At 454 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Nashville, moving east at 50 mph.

  HAZARD...Tornado.

  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...
  Ashley around 505 PM CDT.

This includes Interstate 64 in Illinois between exits 50 and 61.
 
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 3821 8918 3822 8945 3836 8952 3848 8915
      3821 8915
TIME...MOT...LOC 2154Z 251DEG 45KT 3826 8941 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Jaja

2 follow-up statements

962 
WWUS53 KLSX 012203
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
503 PM CDT Sat Jul 1 2023

ILC189-012230-
/O.CON.KLSX.TO.W.0022.000000T0000Z-230701T2230Z/
Washington IL-
503 PM CDT Sat Jul 1 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR
SOUTHEASTERN WASHINGTON COUNTY...
    
At 503 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Ashley, moving east at 50 mph.

HAZARD...Tornado.

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...
  Ashley around 510 PM CDT.

This includes Interstate 64 in Illinois between exits 50 and 61.
 
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 3822 8934 3839 8941 3848 8915 3821 8915
      3821 8918
TIME...MOT...LOC 2203Z 251DEG 45KT 3830 8927 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

Jaja

152 
WWUS53 KLSX 012214
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
514 PM CDT Sat Jul 1 2023

ILC189-012224-
/O.CAN.KLSX.TO.W.0022.000000T0000Z-230701T2230Z/
Washington IL-
514 PM CDT Sat Jul 1 2023

...THE TORNADO WARNING FOR SOUTHEASTERN WASHINGTON COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
south central Illinois.

LAT...LON 3822 8934 3839 8941 3848 8915 3821 8915
      3821 8918
TIME...MOT...LOC 2212Z 251DEG 45KT 3834 8910 

$$

Jaja

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 7:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Saint Clair, Washington	49 min
Jun 30, 7:45 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Washington	30 min
Jun 30, 8:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Washington	31 min
Jun 30, 8:38 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison	23 min
Jun 30, 9:30 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	45 min
Jul 1, 1:23 AM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	37 min
Jul 1, 2:39 AM CDT	Areal Flood Advisory	LSX	Adams, Brown	17 min
Jul 1, 2:53 AM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	39 min
Jul 1, 2:56 AM CDT	Flash Flood Warning	LSX	Adams, Brown	2 hr
Jul 1, 3:10 PM CDT	Severe Thunderstorm Warning	LSX	Washington	38 min
Jul 1, 3:20 PM CDT	Severe Thunderstorm Warning	LSX	Madison	40 min
Jul 1, 3:32 PM CDT	Severe Thunderstorm Warning	LSX	Madison	43 min
Jul 1, 3:39 PM CDT	Severe Thunderstorm Warning	LSX	Saint Clair	21 min
Jul 1, 3:54 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	51 min
Jul 1, 3:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Madison, Saint Clair	47 min
Jul 1, 4:00 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	38 min
Jul 1, 4:06 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey	39 min
Jul 1, 4:08 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Marion	37 min
Jul 1, 4:16 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Washington	14 min
Jul 1, 4:21 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Montgomery	39 min
Jul 1, 4:34 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Randolph, Saint Clair, Washington	41 min
Jul 1, 4:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Calhoun, Greene, Pike	18 min
Jul 1, 5:04 PM CDT	Areal Flood Advisory	LSX	Washington	3 hr
Jul 1, 5:13 PM CDT	Severe Thunderstorm Warning	LSX	Marion	47 min

Nearby

Tornado Warnings in Illinois, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.