Alert archive / Illinois / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 21, NWS St. Louis, MO

March 31, 2023Adams County, Pike County, Illinois; Marion County, Ralls County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 31, 2023, 12:40 PM CDT for Adams County, Pike County, Illinois; Marion County, Ralls County, Missouri. It was in force for 50 min. 13 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: Mar 31, 2023, 12:40 PM CDT (17:40 UTC)
Expired: Mar 31, 2023, 1:30 PM CDT
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Adams County, IL, Pike County, IL, Marion County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 17:44 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 31, 12:45 PM CDT	HAIL 1.25	3 Ene Spaulding, MO	DELAYED REPORT.
Mar 31, 12:48 PM CDT	HAIL 1.25	4 Ene Spaulding, MO
Mar 31, 12:50 PM CDT	HAIL 1	4 Nnw New London, MO	REPORT FROM MPING: QUARTER (1.00 IN.).
Mar 31, 12:50 PM CDT	HAIL 1.75	1 S Hannibal, MO
Mar 31, 12:54 PM CDT	HAIL 1	1 N Hannibal, MO	REPORT FROM MPING: QUARTER (1.00 IN.).
Mar 31, 12:55 PM CDT	HAIL 0.8	1 Nw Hannibal, MO
Mar 31, 12:55 PM CDT	HAIL 1	1 N Hannibal, MO
Mar 31, 12:56 PM CDT	HAIL 1.75	Hannibal, MO	LAW ENFORCEMENT RELAYED REPORTS OF HAIL RANGING FROM PEA TO GOLF BALL SIZE.
Mar 31, 12:59 PM CDT	HAIL 1	1 E Hannibal, MO	PUBLIC REPORT RELAYED BY MEDIA.
Mar 31, 1:00 PM CDT	HAIL 0.25	1 Ese Payson, IL
Mar 31, 1:00 PM CDT	HAIL 1	1 Sw Hannibal, MO
Mar 31, 1:00 PM CDT	HAIL 1	Hannibal, MO
Mar 31, 1:10 PM CDT	HAIL 0.25	2 N Richfield, IL

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 31, 11:46 AM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 5.7 hours before the alert went out and 198 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 897 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 433 m²/s²
0-3 km storm-relative helicity: 424 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

374 
WUUS53 KLSX 311740
SVRLSX
ILC001-149-MOC127-173-311830-
/O.NEW.KLSX.SV.W.0021.230331T1740Z-230331T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1240 PM CDT Fri Mar 31 2023

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Pike County in west central Illinois...
  Southeastern Adams County in west central Illinois...
  Northern Ralls County in northeastern Missouri...
  Southeastern Marion County in northeastern Missouri...

* Until 130 PM CDT.

* At 1239 PM CDT, a severe thunderstorm was located over Spaulding,
  moving northeast at 65 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* This severe thunderstorm will be near...
  Hannibal and Fall Creek around 1250 PM CDT.
  Payson around 1255 PM CDT.

Other locations in the path of this severe thunderstorm include
Quincy Regional Airport and Clayton.

This includes the following highways...
 Interstate 172 near exit 2.
 Interstate 72 between exits 4 and 20.

This also includes Siloam Springs State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for west central
Illinois...and northeastern Missouri.

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

A Tornado Watch remains in effect until 800 PM CDT for west central
Illinois...and northeastern Missouri.

&&

LAT...LON 4014 9091 4012 9091 4012 9092 3976 9092
      3945 9156 3959 9171
TIME...MOT...LOC 1739Z 230DEG 69KT 3959 9153 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Elmore

4 follow-up statements

422 
WWUS53 KLSX 311751
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1251 PM CDT Fri Mar 31 2023

ILC001-149-MOC127-173-311830-
/O.CON.KLSX.SV.W.0021.000000T0000Z-230331T1830Z/
Pike IL-Adams IL-Ralls MO-Marion MO-
1251 PM CDT Fri Mar 31 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR NORTHWESTERN PIKE AND SOUTHEASTERN ADAMS COUNTIES IN WEST CENTRAL
ILLINOIS...NORTH CENTRAL RALLS AND SOUTHEASTERN MARION COUNTIES IN
NORTHEASTERN MISSOURI...

At 1251 PM CDT, a severe thunderstorm was located near Hannibal,
moving northeast at 65 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe storm will be near...
  Fall Creek around 100 PM CDT.

Other locations in the path of this severe thunderstorm include
Payson, Quincy Regional Airport, Beverly and Clayton.

This also includes Siloam Springs State Park.
 
This includes the following highways...
 Interstate 172 near exit 2.
 Interstate 72 between exits 4 and 10.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for west central
Illinois...and northeastern Missouri.

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

&&

LAT...LON 4014 9091 4012 9091 4012 9092 3976 9092
      3959 9145 3969 9156
TIME...MOT...LOC 1751Z 229DEG 57KT 3966 9140 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Elmore

567 
WWUS53 KLSX 311757
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1257 PM CDT Fri Mar 31 2023

MOC173-311807-
/O.CAN.KLSX.SV.W.0021.000000T0000Z-230331T1830Z/
Ralls MO-
1257 PM CDT Fri Mar 31 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL RALLS COUNTY IS
CANCELLED...
    
The severe 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 800 PM CDT for west central
Illinois...and northeastern Missouri.

LAT...LON 4014 9091 4012 9091 4012 9092 3976 9092
      3969 9131 3969 9138 3975 9147
TIME...MOT...LOC 1757Z 230DEG 69KT 3973 9128 

$$

ILC001-149-MOC127-311830-
/O.CON.KLSX.SV.W.0021.000000T0000Z-230331T1830Z/
Pike IL-Adams IL-Marion MO-
1257 PM CDT Fri Mar 31 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR NORTHWESTERN PIKE...SOUTHEASTERN ADAMS COUNTIES IN WEST CENTRAL
ILLINOIS AND SOUTHEASTERN MARION COUNTIES IN NORTHEASTERN MISSOURI...

At 1257 PM CDT, a severe thunderstorm was located near Fall Creek,
moving northeast at 65 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Trained weather spotters reported golf ball size hail in 
         Hannibal.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe storm will be near...
  Payson around 100 PM CDT.
  Quincy Regional Airport around 105 PM CDT.
  Beverly around 110 PM CDT.

Other locations in the path of this severe thunderstorm include
Clayton.

This also includes Siloam Springs State Park.
 
This includes the following highways...
 Interstate 172 near exit 2.
 Interstate 72 between exits 4 and 10.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for west central
Illinois...and northeastern Missouri.

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

&&

LAT...LON 4014 9091 4012 9091 4012 9092 3976 9092
      3969 9131 3969 9138 3975 9147
TIME...MOT...LOC 1757Z 230DEG 69KT 3973 9128 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Elmore

343 
WWUS53 KLSX 311804
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
104 PM CDT Fri Mar 31 2023

ILC149-MOC127-311813-
/O.CAN.KLSX.SV.W.0021.000000T0000Z-230331T1830Z/
Pike IL-Marion MO-
104 PM CDT Fri Mar 31 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PIKE COUNTY IN
WEST CENTRAL ILLINOIS AND SOUTHEASTERN MARION COUNTIES IN
NORTHEASTERN MISSOURI IS CANCELLED...
    
The severe 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 800 PM CDT for west central
Illinois.

LAT...LON 4014 9091 4012 9091 4012 9092 3976 9092
      3976 9131 3980 9131
TIME...MOT...LOC 1803Z 229DEG 67KT 3980 9118 

$$

ILC001-311830-
/O.CON.KLSX.SV.W.0021.000000T0000Z-230331T1830Z/
Adams IL-
104 PM CDT Fri Mar 31 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR SOUTHEASTERN ADAMS COUNTY...

At 103 PM CDT, a severe thunderstorm was located near Payson, moving
northeast at 65 mph.

HAZARD...Golf ball size hail and 60 mph wind gusts.

SOURCE...Trained weather spotters reported golf ball size hail in 
         Hannibal.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

This severe storm will be near...
  Beverly around 110 PM CDT.

Other locations in the path of this severe thunderstorm include
Clayton.

This also includes Siloam Springs State Park.
 
This includes Interstate 172 near exit 2.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for west central
Illinois.

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

&&

LAT...LON 4014 9091 4012 9091 4012 9092 3976 9092
      3976 9131 3980 9131
TIME...MOT...LOC 1803Z 229DEG 67KT 3980 9118 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Elmore

254 
WWUS53 KLSX 311820
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
120 PM CDT Fri Mar 31 2023

ILC001-311830-
/O.CON.KLSX.SV.W.0021.000000T0000Z-230331T1830Z/
Adams IL-
120 PM CDT Fri Mar 31 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CDT
FOR SOUTHEASTERN ADAMS COUNTY...

At 120 PM CDT, a severe thunderstorm was located near Buckhorn,
moving northeast at 65 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

This severe thunderstorm will remain over mainly rural areas of
southeastern Adams County, including the following locations...
Kellerville.

This also includes Siloam Springs State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 800 PM CDT for west central
Illinois.

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

&&

LAT...LON 4012 9091 4012 9092 3984 9092 3984 9113
      4014 9091
TIME...MOT...LOC 1820Z 229DEG 62KT 3995 9094 

HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Elmore

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 1:15 PM CDT	Severe Thunderstorm Warning	LSX	Brown	23 min
Mar 31, 3:49 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	41 min
Mar 31, 4:02 PM CDT	Tornado Warning	LSX	Adams, Pike	43 min
Mar 31, 4:27 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	33 min
Mar 31, 4:35 PM CDT	Tornado Warning	LSX	Adams, Brown, Pike	40 min
Mar 31, 4:41 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Pike	34 min
Mar 31, 5:05 PM CDT	Tornado Warning	LSX	Calhoun, Greene, Jersey	40 min
Mar 31, 5:09 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Pike	51 min
Mar 31, 5:40 PM CDT	High Wind Warning	LSX	Adams, Brown, Pike	3 hr
Mar 31, 6:24 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	23 min
Mar 31, 6:28 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Saint Clair	47 min
Mar 31, 1:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Crawford, Iron, Washington	27 min
Mar 31, 1:37 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	8 min
Mar 31, 2:44 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Monroe	46 min
Mar 31, 3:19 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Ralls	41 min
Mar 31, 3:29 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	46 min
Mar 31, 3:56 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Monroe, Pike, Ralls	49 min
Mar 31, 3:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Audrain, Montgomery, Pike	48 min
Mar 31, 4:40 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	50 min
Mar 31, 4:55 PM CDT	Tornado Warning	LSX	Crawford, Franklin, Gasconade	26 min
Mar 31, 5:10 PM CDT	Tornado Warning	LSX	Crawford, Washington	19 min
Mar 31, 5:18 PM CDT	Tornado Warning	LSX	Crawford, Franklin, Washington	27 min
Mar 31, 5:31 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Washington	25 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2023 Severe Thunderstorm Warnings in Missouri, 2023 Every severe thunderstorm warning 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.