Alert archive / Illinois / Tornado Warnings in 2019

Tornado Warning 30, NWS St. Louis, MO

May 23, 2019Jersey County, Macoupin County, Madison County, Illinois

NWS St. Louis, MO issued this tornado warning at May 23, 2019, 12:15 AM CDT for Jersey County, Macoupin County, Madison County, Illinois. It was in force for 45 min. 2 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 23, 2019, 12:15 AM CDT (05:15 UTC)
Expired: May 23, 2019, 1:00 AM CDT
In force: 45 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Jersey County, IL, Macoupin County, IL, Madison County, IL

The radar

The St Louis radar (KLSX), 51 km from the middle of the area, began a volume at 05:17 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
May 23, 12:15 AM CDT	TSTM WND DMG	Jerseyville, IL	WIDESPREAD TREE, TREE LIMB AND POWER LINE DAMAGE AROUND TOWN.
May 23, 12:45 AM CDT	TSTM WND DMG	Fidelity, IL	NUMEROUS TREES, TREE LIMBS AND POWER LINES BLOWN DOWN ACROSS THE EASTERN PORTIONS OF THE COUNTY.

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
May 22, 10:26 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.3 hours before the alert went out and 190 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: 53 J/kg
Mixed-layer CIN: -161 J/kg
Mixed-layer LCL: 1625 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 283 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

692 
WFUS53 KLSX 230515
TORLSX
ILC083-117-119-230600-
/O.NEW.KLSX.TO.W.0030.190523T0515Z-190523T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
1215 AM CDT Thu May 23 2019

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northwestern Madison County in southwestern Illinois...
  Southern Macoupin County in southwestern Illinois...
  Southern Jersey County in southwestern Illinois...

* Until 100 AM CDT.
    
* At 1215 AM CDT, a severe thunderstorm capable of producing a
  tornado was located near Grafton, moving east at 35 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...
  Jerseyville around 1225 AM CDT.
  Brighton around 1240 AM CDT.
  Shipman and Dorsey around 1250 AM CDT.
  Bunker Hill around 1255 AM CDT.
  Staunton, Gillespie, Benld, Wilsonville, Sawyerville, Mount Clare, 
  East Gillespie and Eagarville around 100 AM CDT.

Other locations impacted by this tornadic thunderstorm include Delhi,
Fidelity, McClusky, Piasa, Miles Station, Williamson, Pruett,
Otterville, Fosterburg and Royal Lakes.

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 3897 8974 3892 9027 3893 9028 3892 9031
      3896 9041 3896 9043 3897 9046 3897 9049
      3909 9052 3924 8981
TIME...MOT...LOC 0515Z 259DEG 32KT 3902 9041 

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

$$

Carney

2 follow-up statements

035 
WWUS53 KLSX 230547
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1247 AM CDT Thu May 23 2019

ILC083-119-230557-
/O.CAN.KLSX.TO.W.0030.000000T0000Z-190523T0600Z/
Madison IL-Jersey IL-
1247 AM CDT Thu May 23 2019

...THE TORNADO WARNING FOR NORTHWESTERN MADISON AND SOUTHERN JERSEY
COUNTIES IN SOUTHWESTERN ILLINOIS 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 500 AM CDT for southwestern
Illinois.

LAT...LON 3900 9015 3917 9015 3924 8981 3900 8975
TIME...MOT...LOC 0547Z 255DEG 35KT 3912 9008 

$$

ILC117-230600-
/O.CON.KLSX.TO.W.0030.000000T0000Z-190523T0600Z/
Macoupin IL-
1247 AM CDT Thu May 23 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 AM CDT FOR SOUTHERN
MACOUPIN COUNTY...
    
At 1247 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Shipman, moving east at 40 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...
  Shipman around 1250 AM CDT.
  Bunker Hill around 1255 AM CDT.
  Gillespie, Benld, Wilsonville, Mount Clare and East Gillespie 
  around 100 AM CDT.

Other locations impacted by this tornadic thunderstorm include Miles
Station, Pruett, Royal Lakes, Dorchester, Piasa, Plainview, White
City and Medora.

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 3900 9015 3917 9015 3924 8981 3900 8975
TIME...MOT...LOC 0547Z 255DEG 35KT 3912 9008 

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

$$

Carney

484 
WWUS53 KLSX 230553
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1253 AM CDT Thu May 23 2019

ILC117-230603-
/O.EXP.KLSX.TO.W.0030.000000T0000Z-190523T0600Z/
Macoupin IL-
1253 AM CDT Thu May 23 2019

...THE TORNADO WARNING FOR SOUTHERN MACOUPIN COUNTY WILL EXPIRE AT
100 AM 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
is still possible with this thunderstorm.

A Tornado Watch remains in effect until 500 AM CDT for southwestern
Illinois.

LAT...LON 3900 9015 3917 9015 3924 8981 3900 8975
TIME...MOT...LOC 0553Z 259DEG 32KT 3913 9001 

$$

Carney

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:54 PM CDT	Severe Thunderstorm Warning	LSX	Adams	36 min
May 22, 8:14 PM CDT	Tornado Warning Tornado observed	LSX	Adams	16 min
May 22, 8:23 PM CDT	Severe Thunderstorm Warning	LSX	Adams	52 min
May 22, 8:30 PM CDT	Tornado Warning	LSX	Adams	30 min
May 22, 8:53 PM CDT	Tornado Warning	LSX	Adams, Brown	52 min
May 22, 10:22 PM CDT	Tornado Warning	LSX	Pike	27 min
May 22, 10:38 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	52 min
May 22, 10:47 PM CDT	Severe Thunderstorm Warning	LSX	Pike	43 min
May 22, 11:29 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey, Macoupin, Pike	46 min
May 22, 11:55 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Jersey	35 min
May 23, 12:11 AM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey, Macoupin	49 min
May 23, 1:22 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Macoupin, Montgomery	38 min
May 23, 1:35 AM CDT	Flash Flood Warning	LSX	Jersey	6 hr
May 23, 1:39 AM CDT	Tornado Warning	LSX	Calhoun	33 min
May 23, 1:49 AM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	26 min
May 23, 1:58 AM CDT	Severe Thunderstorm Warning	LSX	Fayette, Montgomery	47 min
May 23, 2:07 AM CDT	Severe Thunderstorm Warning	LSX	Jersey, Macoupin, Madison	38 min
May 23, 3:02 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Montgomery	58 min
May 23, 3:37 AM CDT	Flash Flood Warning	LSX	Fayette, Montgomery	6 hr
May 23, 3:41 AM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	49 min
May 23, 3:46 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Marion	44 min
May 23, 3:54 AM CDT	Tornado Warning	LSX	Bond, Fayette, Marion	36 min
May 23, 4:01 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Madison, Saint Clair	44 min
May 23, 4:27 AM CDT	Severe Thunderstorm Warning	LSX	Fayette, Marion	33 min
May 23, 4:37 AM CDT	Areal Flood Warning	LSX	Saint Clair	3 hr
May 23, 4:40 AM CDT	Severe Thunderstorm Warning	LSX	Clinton, Saint Clair, Washington	31 min
May 23, 7:10 AM CDT	Areal Flood Warning	LSX	Bond, Clinton, Fayette, Madison, Marion	6 hr

Nearby

Tornado Warnings in Illinois, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.