Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 96, NWS St. Louis, MO

June 24, 20217 counties in Missouri; Adams County, Pike County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 24, 2021, 11:29 PM CDT for 7 counties in Missouri; Adams County, Pike County, Illinois. It was in force for 46 min. 10 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: Jun 24, 2021, 11:29 PM CDT (04:29 UTC)
Expired: Jun 25, 2021, 12:15 AM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Adams County, IL, Pike County, IL, Audrain County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 140 km from the middle of the area, began a volume at 04:33 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
Jun 25, 12:01 AM CDT	TORNADO	2.5 Ene Rensselaer, MO	A BRIEF TORNADO TOUCHED DOWN TO THE NORTHEAST OF RENSESELAER VERY EARLY IN THE MORNING ON JUNE 25TH. THE TORNADO FIRST TOUCHED DOWN ALONG COUNTY ROAD 429. THE TORNADO QUICKLY PUSHED NORTHEAST, DOING DAMAGE TO A FEW SHEDS AT THE INTERSECTION OF COUNTY ROAD 429
Jun 25, 12:03 AM CDT	TSTM WND GST 60	7 N Mexico, MO	HAM REPORTED 50-60 MPH WINDS.
Jun 25, 12:07 AM CDT	TSTM WND DMG	2 S Hannibal, MO	SEVERAL TREE BRANCHES AND SOME MINOR ROOF DAMAGE ALONG LILLY ROAD.
Jun 25, 12:08 AM CDT	TSTM WND DMG	2 Nne Rensselaer, MO	DRIVER REPORTING TREE DEBRIS ALL OVER HIGHWAY AT HIGHWAY 36 NEAR HIGHWAY H.
Jun 25, 12:08 AM CDT	TORNADO	3 Nw Hannibal, MO	A BRIEF, NARROW TORNADO TOUCHED DOWN IN A RESIDENTIAL SUBDIVISION NORTHWEST OF HANNIBAL, MO EARLY FRIDAY MORNING. THE TORNADO FIRST TOUCHED DOWN ALONG ROSEWOOD DRIVE, WHERE IT RIPPED THE SIDING OFF THE WESTWARD FACING WALL OF A RESIDENTIAL HOME. THE TORNADO TH
Jun 25, 12:09 AM CDT	TSTM WND DMG	1 Se Hannibal, MO	SEVERAL TREES DOWN ALONG LINDELL AVENUE.
Jun 25, 12:10 AM CDT	TSTM WND DMG	Farber, MO	RELAYED VIA SOCIAL MEDIA: A LARGE LIMB AROUND 10-12 INCHES IN DIAMETER HAS BROKEN FROM A TREE.
Jun 25, 12:11 AM CDT	TSTM WND DMG	Farber, MO	MULTIPLE TREE LIMBS DOWN AND A FEW SHINGLES RIPPED OFF HOMES ALONG TRABUE DRIVE.
Jun 25, 12:11 AM CDT	TSTM WND GST 70	1 E Hannibal, MO	60 TO 70 MPH WIND GUSTS IN TOWN. NO DAMAGE SO FAR.
Jun 25, 12:12 AM CDT	TSTM WND DMG	2 Sse Hannibal, MO	LARGE LOCUST TREE FELL ONTO A HOUSE. WALLS ARE BUCKLING UNDER THE WEIGHT OF THE TREE AND BREAKING WINDOWS. ON HIGHWAY O AT SILVERS LANE.

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
Jun 24, 8:57 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.5 hours before the alert went out and 229 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: 112 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 817 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

375 
WUUS53 KLSX 250429
SVRLSX
ILC001-149-MOC007-111-127-137-163-173-205-250515-
/O.NEW.KLSX.SV.W.0096.210625T0429Z-210625T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1129 PM CDT Thu Jun 24 2021

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Western Pike County in west central Illinois...
  Adams County in west central Illinois...
  Ralls County in northeastern Missouri...
  Audrain County in central Missouri...
  Marion County in northeastern Missouri...
  Eastern Shelby County in northeastern Missouri...
  Lewis County in northeastern Missouri...
  Monroe County in northeastern Missouri...
  Western Pike County in northeastern Missouri...

* Until 1215 AM CDT.

* At 1129 PM CDT, severe thunderstorms were located along a line
  extending from near La Belle to near Steffenville to near Shelbina
  to near Centralia, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Lewistown around 1135 PM CDT.
  Warren, Ewing and Philadelphia around 1140 PM CDT.
  Monroe City and Maywood around 1145 PM CDT.

Other locations in the path of these severe thunderstorms include
Mexico, Santa Fe, Palmyra, Canton, La Grange, Rensselaer, Spaulding,
Quincy, New London, Laddonia, Farber, Mendon and Fall Creek.

This includes the following highways...
 Interstate 172 between exits 2 and 19.
 Interstate 72 between exits 4 and 20.

This also includes Wakonda State Park, Union Covered Bridge Historic
Site, Mark Twain Lake Recreational Area, and Siloam Springs State
Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4025 9150 4020 9150 4019 9092 3976 9092
      3949 9099 3914 9141 3918 9211 3924 9210
      3925 9225 3965 9197 4026 9195
TIME...MOT...LOC 0429Z 277DEG 41KT 4017 9187 3992 9187 3968 9193 3929
9213

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

CVKING

1 follow-up statement

801 
WWUS53 KLSX 250452
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1152 PM CDT Thu Jun 24 2021

MOC205-250501-
/O.CAN.KLSX.SV.W.0096.000000T0000Z-210625T0515Z/
Shelby MO-
1152 PM CDT Thu Jun 24 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SHELBY COUNTY IS
CANCELLED...

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

A Tornado Watch remains in effect until 400 AM CDT for west central
Illinois...and central, northeastern and east central Missouri.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
northeastern Missouri.

LAT...LON 4025 9150 4020 9150 4019 9092 3976 9092
      3949 9099 3914 9141 3917 9197 3928 9192
      3966 9184 4025 9183
TIME...MOT...LOC 0451Z 277DEG 41KT 4014 9155 3989 9155 3965 9161 3926
9181

$$

ILC001-149-MOC007-111-127-137-163-173-250515-
/O.CON.KLSX.SV.W.0096.000000T0000Z-210625T0515Z/
Pike IL-Adams IL-Ralls MO-Audrain MO-Marion MO-Lewis MO-Monroe MO-
Pike MO-
1152 PM CDT Thu Jun 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT
FOR WESTERN PIKE AND ADAMS COUNTIES IN WEST CENTRAL ILLINOIS...RALLS
COUNTY IN NORTHEASTERN MISSOURI...NORTHEASTERN AUDRAIN COUNTY IN
CENTRAL MISSOURI...MARION...LEWIS...EASTERN MONROE AND WESTERN PIKE
COUNTIES IN NORTHEASTERN MISSOURI...

At 1151 PM CDT, severe thunderstorms were located along a line
extending from Canton to near Maywood to near Rensselaer to 7 miles
northeast of Mexico, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
  Palmyra, Canton, La Grange, Rensselaer, Quincy, Spaulding, New 
  London, Laddonia, Mendon, Fall Creek, Farber, Vandalia, Quincy 
  Regional Airport, Payson, Camp Point, Golden, Barry, Beverly and 
  Clayton.

This also includes Wakonda State Park, Mark Twain Lake Recreational
Area, and Siloam Springs State Park.
 
This includes the following highways...
 Interstate 172 between exits 2 and 19.
 Interstate 72 between exits 4 and 20.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 AM CDT for west central
Illinois...and central, northeastern and east central Missouri.

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 4025 9150 4020 9150 4019 9092 3976 9092
      3949 9099 3914 9141 3917 9197 3928 9192
      3966 9184 4025 9183
TIME...MOT...LOC 0451Z 277DEG 41KT 4014 9155 3989 9155 3965 9161 3926
9181

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 10:57 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Shelby	48 min
Jun 24, 11:03 PM CDT	Tornado Warning	LSX	Monroe, Shelby	42 min
Jun 24, 11:32 PM CDT	Tornado Warning	LSX	Lewis	28 min
Jun 24, 11:35 PM CDT	Tornado Warning	LSX	Audrain, Monroe, Ralls	40 min
Jun 24, 11:40 PM CDT	Tornado Warning	LSX	Marion, Monroe, Ralls, Shelby	38 min
Jun 25, 12:09 AM CDT	Tornado Warning	LSX	Audrain, Pike, Ralls	51 min
Jun 25, 12:17 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Ralls	43 min
Jun 25, 12:57 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	48 min
Jun 25, 1:27 AM CDT	River Flood Warning	LSX	Boone	33 hr
Jun 25, 1:54 AM CDT	Areal Flood Advisory	LSX	Montgomery	3 hr
Jun 25, 2:21 AM CDT	Areal Flood Advisory	LSX	Audrain, Boone, Callaway	106 min
Jun 25, 3:07 AM CDT	Areal Flood Advisory	LSX	Boone, Callaway, Cole, Moniteau	82 min
Jun 25, 3:34 AM CDT	Flash Flood Warning	LSX	Boone	6 hr
Jun 25, 4:04 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 4:26 AM CDT	Flash Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	6 hr
Jun 25, 4:28 AM CDT	Flash Flood Warning	LSX	Callaway, Lincoln, Montgomery, Osage, Warren	6 hr
Jun 25, 7:48 AM CDT	River Flood Warning	LSX	Lincoln	62 hr
Jun 25, 8:25 AM CDT	Areal Flood Warning	LSX	Audrain, Boone, Callaway, Cole, Moniteau	9 hr
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Franklin, Warren	9 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Saint Charles, Saint Louis	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	8 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Callaway, Osage	21 days
Jun 25, 10:06 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	10 days
Jun 25, 4:59 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Osage	20 min
Jun 25, 5:01 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	44 min
Jun 25, 5:05 PM CDT	River Flood Warning	LSX	Cole, Osage	9 days
Jun 25, 5:42 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	22 min
Jun 25, 6:07 PM CDT	River Flood Warning	LSX	Lincoln	3 days
Jun 25, 6:36 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	39 min
Jun 25, 6:43 PM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway	6 hr
Jun 25, 6:48 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	42 min
Jun 25, 6:55 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	19 min
Jun 24, 8:11 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin	49 min
Jun 24, 8:42 PM CDT	Severe Thunderstorm Warning	LSX	Montgomery	47 min
Jun 25, 12:03 AM CDT	Tornado Warning	LSX	Adams, Pike	42 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2021 Severe Thunderstorm Warnings in Illinois, 2021 Every severe thunderstorm warning in 2021

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.