Alert archive / Illinois / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 21, NWS St. Louis, MO

March 14, 20245 counties in Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 14, 2024, 8:10 AM CDT for 5 counties in Illinois. It was in force for 50 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: Mar 14, 2024, 8:10 AM CDT (13:10 UTC)
Expired: Mar 14, 2024, 9:00 AM CDT
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bond County, IL, Fayette County, IL, Macoupin County, IL, Madison County, IL, Montgomery County, IL

The radar

The Lincoln radar (KILX), 100 km from the middle of the area, began a volume at 13:13 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
Mar 14, 8:16 AM CDT	TSTM WND DMG	Waggoner, IL	Multiple semi-trucks were blown over along I-55 northbound between Litchfield and Farmersville. Time and exact location estimated from NWS Lincoln radar.

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
Mar 14, 4:41 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 1.2 hours before the alert went out and 118 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: 461 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 856 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

565 
WUUS53 KLSX 141310
SVRLSX
ILC005-051-117-119-135-141400-
/O.NEW.KLSX.SV.W.0021.240314T1310Z-240314T1400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
810 AM CDT Thu Mar 14 2024

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Bond County in south central Illinois...
  North central Madison County in southwestern Illinois...
  Northwestern Fayette County in south central Illinois...
  Eastern Macoupin County in southwestern Illinois...
  Montgomery County in south central Illinois...

* Until 900 AM CDT.

* At 809 AM CDT, severe thunderstorms were located along a line
  extending from near Divernon to near Worden, moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Litchfield, Hillsboro, Staunton, Gillespie, Nokomis, Girard, Mount
  Olive, Benld, Ramsey, Raymond, Witt, White Oak, Livingston,
  Farmersville, Taylor Springs, Coffeen, Schram City, Sorento,
  Sawyerville, and Mount Clare.

This includes Interstate 55 in Illinois between exits 37 and 63.
 
This also includes Ramsey Lake State Park and Lake Lou Yaeger.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3907 8903 3895 8985 3952 8976 3952 8953
      3935 8953 3935 8914 3922 8914 3921 8903
TIME...MOT...LOC 1309Z 248DEG 45KT 3953 8970 3895 8981 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Byrd

3 follow-up statements

980 
WWUS53 KLSX 141327
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
827 AM CDT Thu Mar 14 2024

ILC117-119-141337-
/O.CAN.KLSX.SV.W.0021.000000T0000Z-240314T1400Z/
Madison IL-Macoupin IL-
827 AM CDT Thu Mar 14 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MADISON AND
EASTERN MACOUPIN COUNTIES IN SOUTHWESTERN ILLINOIS IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

&&

LAT...LON 3907 8903 3899 8959 3935 8953 3935 8914
      3922 8914 3921 8903
TIME...MOT...LOC 1327Z 248DEG 45KT 3961 8944 3903 8955 

$$

ILC005-051-135-141400-
/O.CON.KLSX.SV.W.0021.000000T0000Z-240314T1400Z/
Bond IL-Fayette IL-Montgomery IL-
827 AM CDT Thu Mar 14 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR NORTHWESTERN BOND...NORTHWESTERN FAYETTE AND CENTRAL MONTGOMERY
COUNTIES...

At 827 AM CDT, severe thunderstorms were located along a line
extending from near Kincaid to near Sorento, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Hillsboro, Nokomis, Ramsey, Witt, Taylor Springs, Coffeen, Schram
City, Sorento, Van Burensburg, Irving, Panama, Fillmore, Coalton,
Donnellson, Butler, Ohlman, Bingham, Wenonah, Chapman, and Bayle
City.

This also includes Ramsey Lake State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3907 8903 3899 8959 3935 8953 3935 8914
      3922 8914 3921 8903
TIME...MOT...LOC 1327Z 248DEG 45KT 3961 8944 3903 8955 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Byrd

377 
WWUS53 KLSX 141341
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
841 AM CDT Thu Mar 14 2024

ILC005-141351-
/O.CAN.KLSX.SV.W.0021.000000T0000Z-240314T1400Z/
Bond IL-
841 AM CDT Thu Mar 14 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BOND COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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

&&

LAT...LON 3907 8903 3904 8921 3903 8935 3935 8930
      3935 8914 3922 8914 3921 8903
TIME...MOT...LOC 1341Z 275DEG 45KT 3934 8922 3899 8928 

$$

ILC051-135-141400-
/O.CON.KLSX.SV.W.0021.000000T0000Z-240314T1400Z/
Fayette IL-Montgomery IL-
841 AM CDT Thu Mar 14 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM CDT
FOR NORTHWESTERN FAYETTE AND SOUTHEASTERN MONTGOMERY COUNTIES...

At 841 AM CDT, severe thunderstorms were located along a line
extending from near Nokomis to near Van Burensburg, moving east at 50
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Nokomis, Ramsey, Van Burensburg, Fillmore, Coalton, Ohlman, Bingham,
Wenonah, Bayle City, and Chapman.

This also includes Ramsey Lake State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3907 8903 3904 8921 3903 8935 3935 8930
      3935 8914 3922 8914 3921 8903
TIME...MOT...LOC 1341Z 275DEG 45KT 3934 8922 3899 8928 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Byrd

318 
WWUS53 KLSX 141353
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
853 AM CDT Thu Mar 14 2024

ILC051-135-141403-
/O.EXP.KLSX.SV.W.0021.000000T0000Z-240314T1400Z/
Fayette IL-Montgomery IL-
853 AM CDT Thu Mar 14 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN FAYETTE AND
SOUTHEASTERN MONTGOMERY COUNTIES WILL EXPIRE AT 900 AM CDT...

The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.

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

&&

LAT...LON 3907 8903 3904 8921 3903 8935 3935 8930
      3935 8914 3922 8914 3921 8903
TIME...MOT...LOC 1353Z 248DEG 45KT 3939 8906 3904 8912 

$$

KD

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 13, 7:24 PM CDT	Severe Thunderstorm Warning	LSX	Madison	51 min
Mar 13, 8:13 PM CDT	Severe Thunderstorm Warning	LSX	Madison	47 min
Mar 14, 2:40 AM CDT	Severe Thunderstorm Warning	LSX	Adams	50 min
Mar 14, 7:25 AM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey, Macoupin, Madison, Montgomery	50 min
Mar 14, 7:28 AM CDT	Tornado Warning	LSX	Calhoun, Jersey, Madison	22 min
Mar 14, 7:32 AM CDT	Tornado Warning	LSX	Jersey	20 min
Mar 14, 7:33 AM CDT	Tornado Warning	LSX	Madison	27 min
Mar 14, 7:47 AM CDT	Severe Thunderstorm Warning	LSX	Madison, Monroe, Saint Clair	43 min
Mar 14, 7:48 AM CDT	Tornado Warning	LSX	Jersey, Macoupin	29 min
Mar 14, 7:59 AM CDT	Tornado Warning	LSX	Macoupin, Montgomery	30 min
Mar 14, 8:15 AM CDT	Tornado Warning	LSX	Montgomery	11 min
Mar 14, 8:19 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Madison, Saint Clair	41 min
Mar 14, 3:43 PM CDT	Severe Thunderstorm Warning	LSX	Pike	14 min
Mar 14, 3:51 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Pike	39 min
Mar 14, 3:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Monroe	63 min
Mar 14, 4:11 PM CDT	Tornado Warning	LSX	Calhoun	41 min
Mar 14, 4:16 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Saint Clair, Washington	44 min
Mar 14, 4:18 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	34 min
Mar 14, 4:21 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey	54 min
Mar 14, 4:21 PM CDT	Tornado Warning	LSX	Monroe	39 min
Mar 14, 4:25 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	65 min
Mar 14, 4:32 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Monroe, Saint Clair	25 min
Mar 14, 4:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Macoupin, Madison	59 min
Mar 14, 4:47 PM CDT	Tornado Warning	LSX	Macoupin, Montgomery	27 min
Mar 14, 4:50 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Monroe, Randolph, Saint Clair	40 min
Mar 14, 4:58 PM CDT	Tornado Warning	LSX	Monroe, Randolph, Saint Clair	46 min
Mar 14, 5:07 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Bond, Fayette, Montgomery	53 min
Mar 14, 5:10 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	65 min
Mar 14, 5:17 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	43 min
Mar 14, 5:25 PM CDT	Severe Thunderstorm Warning	LSX	Madison	50 min
Mar 14, 5:28 PM CDT	Tornado Warning	LSX	Saint Clair, Washington	47 min
Mar 14, 5:36 PM CDT	Areal Flood Advisory	LSX	Monroe, Saint Clair	3 hr
Mar 14, 5:38 PM CDT	Areal Flood Advisory	LSX	Bond, Madison	25 min
Mar 14, 5:40 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	50 min
Mar 14, 5:42 PM CDT	Severe Thunderstorm Warning	LSX	Madison	32 min
Mar 14, 5:44 PM CDT	Severe Thunderstorm Warning	LSX	Montgomery	41 min
Mar 14, 5:54 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette	51 min
Mar 14, 5:55 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun	50 min
Mar 14, 6:00 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	30 min
Mar 14, 6:03 PM CDT	Flash Flood Warning	LSX	Bond, Madison	3 hr
Mar 14, 6:08 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Montgomery	18 min
Mar 14, 6:08 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	21 min
Mar 14, 6:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Calhoun, Jersey	51 min
Mar 14, 6:16 PM CDT	Severe Thunderstorm Warning	LSX	Washington	27 min
Mar 14, 6:26 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Monroe, Saint Clair, Washington	64 min
Mar 14, 6:37 PM CDT	Areal Flood Advisory	LSX	Monroe, Saint Clair	3 hr
Mar 14, 6:42 PM CDT	Severe Thunderstorm Warning	LSX	Madison	27 min
Mar 14, 6:47 PM CDT	Tornado Warning	LSX	Fayette, Marion	28 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2024 Every severe thunderstorm warning in 2024

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.