Alert archive / Missouri / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 97, NWS St. Louis, MO

June 25, 20215 counties in Missouri; 4 counties in Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 25, 2021, 12:17 AM CDT for 5 counties in Missouri; 4 counties in Illinois. It was in force for 43 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: Jun 25, 2021, 12:17 AM CDT (05:17 UTC)
Expired: Jun 25, 2021, 1:00 AM CDT
In force: 43 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, Brown County, IL, Calhoun County, IL, Pike County, IL, Audrain County, MO, Lincoln County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 127 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
Jun 25, 12:35 AM CDT	TSTM WND DMG	Louisiana, MO	RELAYED VIA SOCIAL MEDIA: NUMEROUS LIMBS UP TO 6 INCHES IN DIAMETER ARE DOWN IN THE AREA.
Jun 25, 12:50 AM CDT	TSTM WND DMG	3 Nw Pittsfield, IL	TREE DAMAGE ON BOTH SIDES OF LAKEVIEW DRIVE AROUND JELLYSTONE-PINE LAKES CAMPGROUNDS COTTAGES. TREES HAD BIG LIMBS DOWN, SOME WERE SPLIT, AND A FEW LOOKED LIKE THEYD BEEN BROKEN OFF.

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
Jun 24, 11:47 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.3 hours before the alert went out and 197 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: 263 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 875 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 245 m²/s²
0-3 km storm-relative helicity: 444 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

As transmitted.

582 
WUUS53 KLSX 250517
SVRLSX
ILC001-009-013-149-MOC007-113-139-163-173-250600-
/O.NEW.KLSX.SV.W.0097.210625T0517Z-210625T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1217 AM CDT Fri Jun 25 2021

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Calhoun County in southwestern Illinois...
  Pike County in west central Illinois...
  Adams County in west central Illinois...
  Brown County in west central Illinois...
  Eastern Ralls County in northeastern Missouri...
  Northern Lincoln County in east central Missouri...
  Southeastern Audrain County in central Missouri...
  Northern Montgomery County in east central Missouri...
  Pike County in northeastern Missouri...

* Until 100 AM CDT.

* At 1216 AM CDT, severe thunderstorms were located along a line
  extending from near Mendon to 6 miles southeast of Fall Creek to
  near Curryville to near Martinsburg, moving east at 65 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Mendon around 1220 AM CDT.
  Bowling Green, Barry and Camp Point around 1225 AM CDT.
  Golden, Beverly and Tarrants around 1230 AM CDT.

Other locations in the path of these severe thunderstorms include
Griggsville, Clarksville, Pleasant Hill, Eolia, Belleview and
Elsberry.

This includes the following highways...
 Interstate 172 near exit 2, and between exits 14 and 19.
 Interstate 72 between exits 4 and 35.

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

A Tornado Watch remains in effect until 400 AM CDT for southwestern
and 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 4019 9091 4011 9091 4010 9070 4008 9067
      4005 9068 4003 9061 3998 9060 3999 9051
      3992 9054 3988 9058 3983 9057 3971 9065
      3956 9058 3904 9068 3906 9168 3953 9132
      3969 9132 3969 9131 3970 9132 4020 9134
TIME...MOT...LOC 0516Z 255DEG 56KT 4012 9126 3972 9122 3927 9138 3905
9163

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

CVKING

1 follow-up statement

254 
WWUS53 KLSX 250546
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1246 AM CDT Fri Jun 25 2021

MOC007-173-250556-
/O.CAN.KLSX.SV.W.0097.000000T0000Z-210625T0600Z/
Ralls MO-Audrain MO-
1246 AM CDT Fri Jun 25 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN RALLS AND SOUTHEASTERN
AUDRAIN COUNTIES 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 southwestern
and west central Illinois...and central, northeastern and east
central Missouri.

LAT...LON 4019 9091 4011 9091 4010 9070 4008 9070
      4008 9067 4005 9067 4003 9061 3998 9060
      3998 9051 3992 9054 3988 9058 3983 9057
      3971 9065 3956 9058 3943 9062 3904 9068
      3906 9147 3951 9119 3967 9112 4020 9110
TIME...MOT...LOC 0546Z 271DEG 35KT 4012 9080 3972 9076 3927 9092 3906
9118

$$

ILC001-009-013-149-MOC113-139-163-250600-
/O.CON.KLSX.SV.W.0097.000000T0000Z-210625T0600Z/
Calhoun IL-Pike IL-Adams IL-Brown IL-Lincoln MO-Montgomery MO-
Pike MO-
1246 AM CDT Fri Jun 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR NORTHWESTERN CALHOUN COUNTY IN SOUTHWESTERN ILLINOIS...PIKE...
EASTERN ADAMS AND BROWN COUNTIES IN WEST CENTRAL ILLINOIS...NORTHERN
LINCOLN...NORTHEASTERN MONTGOMERY COUNTIES IN EAST CENTRAL MISSOURI
AND PIKE COUNTIES IN NORTHEASTERN MISSOURI...

At 1246 AM CDT, severe thunderstorms were located along a line
extending from 9 miles north of Mount Sterling to near Griggsville to
near Eolia to 6 miles north of Hawk Point, moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
  Pittsfield, Griggsville, Elsberry and Belleview.

This also includes Siloam Springs State Park.
 
This includes Interstate 72 between exits 20 and 35.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 AM CDT for southwestern
and 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 4019 9091 4011 9091 4010 9070 4008 9070
      4008 9067 4005 9067 4003 9061 3998 9060
      3998 9051 3992 9054 3988 9058 3983 9057
      3971 9065 3956 9058 3943 9062 3904 9068
      3906 9147 3951 9119 3967 9112 4020 9110
TIME...MOT...LOC 0546Z 271DEG 35KT 4012 9080 3972 9076 3927 9092 3906
9118

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

19

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, 11:29 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lewis, Marion, Monroe, Pike, Ralls and 1 more	46 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, 12:57 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.