Alert archive / Missouri / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 129, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 27, 2026, 8:31 PM CDT for Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 32 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
- Apr 27, 2026, 8:31 PM CDT (01:31 UTC)
- Expired
- Apr 27, 2026, 9:03 PM CDT
- In force
- 32 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Saint Francois County, MO, Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 102 km from the middle of the area, began a volume at 01:34 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 |
|---|---|---|---|
| Apr 27, 8:35 PM CDT | TSTM WND GST 60 | Farmington, MO | |
| Apr 27, 8:40 PM CDT | HAIL 1.25 | Farmington, MO | Report from mPING: Half Dollar (1.25 in.). |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 4 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 27, 12:50 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 1.5 hours before the alert went out and 281 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1082 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- -57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
425
WUUS53 KLSX 280131
SVRLSX
MOC186-187-280215-
/O.NEW.KLSX.SV.W.0129.260428T0131Z-260428T0215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
831 PM CDT Mon Apr 27 2026
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Sainte Genevieve County in southeastern Missouri...
Southern Saint Francois County in southeastern Missouri...
* Until 915 PM CDT.
* At 831 PM CDT, a severe thunderstorm was located over Farmington,
moving east at 45 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.
* Locations impacted include...
Desloge, Doe Run, Park Hills, Leadington, Farmington, Knob Lick,
Libertyville, Rocky Ridge, Weingarten, Coffman, Womac, River Aux
Vases, Ste. Genevieve, Minnith and St. Mary.
This includes the following State Parks...
St. Joe State Park, Hawn State Park, Felix Valle House State Park and
Missouri Mines Historic Site.
This includes Interstate 55 in Missouri between exits 141 and 154.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
A Tornado Watch remains in effect until 900 PM CDT for a portion of
southeast Missouri.
&&
LAT...LON 3769 9055 3787 9056 3802 9011 3802 9009
3801 9006 3800 9005 3800 9003 3796 9000
3797 8994 3795 8993 3794 8995 3794 8996
3793 8997 3788 8995 3787 8994 3782 9000
3767 9011
TIME...MOT...LOC 0131Z 267DEG 36KT 3779 9046
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Jaja3 follow-up statements
546
WWUS53 KLSX 280146
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
846 PM CDT Mon Apr 27 2026
MOC187-280156-
/O.CAN.KLSX.SV.W.0129.000000T0000Z-260428T0215Z/
Saint Francois MO-
846 PM CDT Mon Apr 27 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHERN SAINT
FRANCOIS COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
&&
LAT...LON 3792 9040 3802 9011 3802 9008 3800 9003
3796 9000 3797 8994 3795 8993 3794 8996
3793 8997 3790 8997 3787 8994 3782 9000
3772 9007 3770 9024 3788 9046
TIME...MOT...LOC 0131Z 267DEG 36KT 3779 9045
$$
MOC186-280215-
/O.CON.KLSX.SV.W.0129.000000T0000Z-260428T0215Z/
Sainte Genevieve MO-
846 PM CDT Mon Apr 27 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SAINTE GENEVIEVE COUNTY...
At 846 PM CDT, a severe thunderstorm was located near Coffman, or 9
miles east of Farmington, moving east at 45 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...
Coffman and Weingarten around 850 PM CDT.
St. Mary around 910 PM CDT.
Other locations impacted by the severe thunderstorm include River Aux
Vases and Minnith.
This includes the following State Parks...
Hawn State Park and Felix Valle House State Park.
This includes Interstate 55 in Missouri between exits 141 and 154.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
&&
LAT...LON 3792 9040 3802 9011 3802 9008 3800 9003
3796 9000 3797 8994 3795 8993 3794 8996
3793 8997 3790 8997 3787 8994 3782 9000
3772 9007 3770 9024 3788 9046
TIME...MOT...LOC 0131Z 267DEG 36KT 3779 9045
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Jaja993
WWUS53 KLSX 280158
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
858 PM CDT Mon Apr 27 2026
MOC186-280215-
/O.CON.KLSX.SV.W.0129.000000T0000Z-260428T0215Z/
Sainte Genevieve MO-
858 PM CDT Mon Apr 27 2026
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHEASTERN SAINTE GENEVIEVE COUNTY...
At 858 PM CDT, a severe thunderstorm was located 5 miles east of
Coffman, or 12 miles south of Ste. Genevieve, moving east at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will be near...
Coffman around 900 PM CDT.
St. Mary around 910 PM CDT.
Other locations impacted by the severe thunderstorm include River Aux
Vases and Minnith.
This includes the following State Parks...
Felix Valle House State Park.
This includes Interstate 55 in Missouri between exits 141 and 143.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.
Tornadoes can develop quickly from severe thunderstorms. Seek shelter
immediately in an interior room on the lowest floor of a well-built
structure.
A Tornado Watch remains in effect until 1100 PM CDT for a portion of
southeast Missouri.
&&
LAT...LON 3785 9019 3800 9003 3797 9001 3796 9000
3797 8994 3795 8993 3794 8996 3793 8997
3790 8997 3787 8994 3782 9000 3772 9007
3770 9024
TIME...MOT...LOC 0146Z 267DEG 36KT 3780 9026
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Jaja764
WWUS53 KLSX 280203
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
903 PM CDT Mon Apr 27 2026
MOC186-280213-
/O.CAN.KLSX.SV.W.0129.000000T0000Z-260428T0215Z/
Sainte Genevieve MO-
903 PM CDT Mon Apr 27 2026
...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHEASTERN SAINTE
GENEVIEVE COUNTY...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1100 PM CDT for a portion of
southeast Missouri.
&&
LAT...LON 3785 9019 3800 9003 3797 9001 3796 9000
3797 8994 3795 8993 3794 8996 3793 8997
3790 8997 3787 8994 3782 9000 3772 9007
3770 9024
TIME...MOT...LOC 0158Z 267DEG 36KT 3780 9011
$$
JajaWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 27, 6:54 PM CDT, 1 hour 37 minutes earlier. Its key messages:
- While periods of storms are expected through Monday morning, the most potent thunderstorms will occur through early evening.
- Thunderstorms this evening will be capable of damaging wind gusts, large hail, and strong tornadoes.
- A period of cool, calm weather is expected mid-week through the weekend.
Area forecast discussion, Apr 27, 6:54 PM CDT, 1 hour 37 minutes before
Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
654 PM CDT Mon Apr 27 2026
.KEY MESSAGES...
- While periods of storms are expected through Monday morning, the
most potent thunderstorms will occur through early evening.
- Thunderstorms this evening will be capable of damaging wind
gusts, large hail, and strong tornadoes.
- A period of cool, calm weather is expected mid-week through the
weekend.
&&
.SHORT TERM...THROUGH TUESDAY NIGHT/...
Issued at 456 PM CDT Mon Apr 27 2026
(Through Tuesday Night)
Issued at 155 AM CDT Mon Apr 27 2026
Storms across southeastern Missouri continue to butt up against an
instability gradient draped from north to south across Missouri.
The warm air advection feeding these storms will also push greater
instability slowly northeastward through this morning, though
propagation vectors will favor convection continuing to move east-
southeastward generally away from the CWA or into an unfavorable
environment. Additionally, the low-level jet refocusing across
Kansas will continue to support the downward trend in convection
across southeastern Missouri early this morning. Any linger storms
over the next couple of hours will be capable mainly of large hail,
though there is also a very low damaging wind and tornado threat for
storms that remain surface based.
Our attention turns to the storms over eastern Kansas that are
propagating eastward with the nose of the low-level jet. With the
nose of this low-level jet edging into northeastern Missouri later
this morning, the focus for these storms will spread into portions
of the CWA north of I-70. Vertical thermal profiles suggest that this
convection will be elevated, mitigating a threat of damaging wind
gusts and/or tornadoes. However, with around 40 kts of effective
shear and building MUCAPE, there is a low chance for isolated
instances of large hail.
How long this convection lingers is uncertain, although guidance
trends have been toward a lull in convective activity in the wake of
this convection and that associated with a cold front during the
late afternoon and evening. Ahead of the front, the warm sector
remains capped through much of the afternoon per a majority of
deterministic soundings. Although, any remnant outflow or
differential heating boundary from early day convection may serve as
enough of a forcing mechanism to spawn discrete convection during
the afternoon as lift from an approaching shortwave increases over
the region. If this convection does form, it will be in an
environment characterized by 2,000-2,500 J/kg of SBCAPE and roughly
50 kts of deep-layer shear. This will favor supercells capable of
all hazards, with long curved hodographs favoring strong tornadoes,
especially if storms are able to latch on to any remnant boundaries
across the CWA.
Where the environment isn't contaminated from earlier rounds of
convection, additional updrafts are expected along the cold front as
it enters the area 4-5pm. Forcing from the front paired with lift
from the shortwave will lead to numerous updrafts along the front.
While this will be occurring within a similar environment detailed
prior, the number of updrafts paired with them occurring along the
front may lead to destructive interactions and congealing into line
segments and/or clusters. While this will tend to limit a strong
tornado threat, storms will still be capable of all severe hazards.
Convection is expected to depart the CWA with the front by 9-10pm.
Even with the FROPA Monday evening, the threat for convection will
continue on Tuesday. Guidance consensus has the front stalling just
south of the CWA early Tuesday and then buckling northward as a
shortwave moves through the Central Plains and into the Midwest
through the day. This shortwave will send a subtle surface
reflection through the Mid South along the front, with a brief
period of warm air advection that will help force elevated
convection for areas mainly along and south of I-70. If the front
can move northward enough, shear profiles and instability amounts
favor supercells capable primarily of large hail across far
southeastern Missouri during the afternoon. Waning instability and
the front continuing southward will bring an end to rain chances
during the evening.
Elmore
&&
.LONG TERM...WEDNESDAY THROUGH MONDAY/...
Issued at 456 PM CDT Mon Apr 27 2026
(Tuesday Night through Sunday)
Issued at 155 AM CDT Mon Apr 27 2026
Both deterministic guidance and ensemble clusters keep upper-level
troughing slowly moving eastward over the eastern CONUS through the
long range forecast period. This will maintain northwesterly flow
over the Middle Mississippi Valley through Saturday as several
rounds of high pressure pass through the region. As a result,
temperatures will run at or below climatological normals into the
weekend and mostly dry weather is expected.
Elmore
&&
.AVIATION... (For the 00z TAFs through 00z Tuesday Evening)
Issued at 654 PM CDT Mon Apr 27 2026
Ongoing line of strong to severe thunderstorms moving through the
STL Metro area at the start of this TAF period. Storms along this
line will be capable of damaging winds, large hail and tornadoes.
The line will gradually move east-southeast and exit the forecast
area by 03-04Z. Remainder of the period will generally see calmer
conditions with VFR cloud cover. However, another round of showers
and isolated TSRA will spread into the forecast area from the
southwest after 18-20Z Tuesday. This will mostly impact COU/JEF
during this TAF period, but could spread MVFR ceilings into the
SUS/STL vicinity after 28/23Z.
SPECIFICS FOR KSTL: Broken line of +TSRA will bring a potential
for erratic, possibly damaging winds to STL through 01Z-02Z. Radar
trends show the strongest thunderstorm cores skirting around the
terminal, though additional development is possible within the
next hour. After TSRA exit to the east, VFR conditions dominate
until late in this TAF period (after 29/02Z) when MVFR conditions
could move in from the southwest.
WFO LSX
&&
.LSX WATCHES/WARNINGS/ADVISORIES...
MO...Flood Watch until 9 PM CDT this evening for Audrain MO-Boone MO-
Callaway MO-Cole MO-Franklin MO-Gasconade MO-Jefferson MO-
Lincoln MO-Moniteau MO-Montgomery MO-Osage MO-Pike MO-Saint
Charles MO-Saint Louis City MO-Saint Louis MO-Warren MO.
IL...Flood Watch until 9 PM CDT this evening for Bond IL-Calhoun IL-
Clinton IL-Fayette IL-Greene IL-Jersey IL-Macoupin IL-
Madison IL-Marion IL-Monroe IL-Montgomery IL-Saint Clair IL-
Washington IL.
&&
WFO LSXHazardous weather outlook, Apr 27, 2:02 AM CDT, 18 hours 29 minutes before
Hazardous Weather Outlook National Weather Service St Louis MO 202 AM CDT Mon Apr 27 2026 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-280715- Greene IL-Macoupin IL-Montgomery IL-Bond IL-Fayette IL-Clinton IL- Marion IL-Washington IL-Randolph IL-Adams IL-Brown IL-Pike IL- Calhoun IL-Jersey IL-Madison IL-Saint Clair IL-Monroe IL-Knox MO- Lewis MO-Shelby MO-Marion MO-Monroe MO-Ralls MO-Pike MO-Boone MO- Audrain MO-Moniteau MO-Cole MO-Osage MO-Callaway MO-Montgomery MO- Lincoln MO-Gasconade MO-Warren MO-Saint Charles MO-Franklin MO- Saint Louis MO-Saint Louis City MO-Jefferson MO-Crawford MO- Washington MO-Saint Francois MO-Sainte Genevieve MO-Iron MO- Madison MO-Reynolds MO- 202 AM CDT Mon Apr 27 2026 This Hazardous Weather Outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAY ONE...Today and tonight. Periods of thunderstorms are expected through the day into this evening. Thunderstorms this afternoon and evening will be capable of large hail, damaging wind gusts, and tornadoes. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. There is a chance of thunderstorms Tuesday. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report wind damage, hail occurrence and size, and tornado occurrence to NWS St. Louis. Elmore
In the hours before
Local storm report, Apr 27, 7:33 PM CDT, 58 minutes before
Preliminary Local Storm Report
National Weather Service St Louis MO
733 PM CDT Mon Apr 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0710 PM Tstm Wnd Dmg Florissant 38.80N 90.32W
04/27/2026 St. Louis MO Public
4 buildings collapsed in Florissant.
&&Local storm report, Apr 27, 7:35 PM CDT, 56 minutes before
Preliminary Local Storm Report
National Weather Service St Louis MO
735 PM CDT Mon Apr 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0730 PM Tstm Wnd Gst Hamel 38.89N 89.84W
04/27/2026 E70 MPH Madison IL Public
&&Local storm report, Apr 27, 7:44 PM CDT, 47 minutes before
Preliminary Local Storm Report
National Weather Service St Louis MO
744 PM CDT Mon Apr 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0735 PM Tstm Wnd Dmg 2 SE Belleville 38.51N 89.98W
04/27/2026 St. Clair IL Emergency Mngr
*** 3 INJ ***
tree onto a house with potential injuries.
&&Local storm report, Apr 27, 7:47 PM CDT, 44 minutes before
Preliminary Local Storm Report
National Weather Service St Louis MO
747 PM CDT Mon Apr 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0558 PM Hail 1 N Jerseyville 39.14N 90.32W
04/27/2026 E1.00 Inch Jersey IL Public
Report from mPING: Quarter (1.00 in.).
0626 PM Hail 2 S Gerald 38.36N 91.32W
04/27/2026 M1.25 Inch Franklin MO Public
0644 PM Hail 1 SW Pacific 38.47N 90.76W
04/27/2026 E1.00 Inch Franklin MO Public
Report from mPING: Quarter (1.00 in.).
0648 PM Hail 2 E Gray Summit 38.49N 90.79W
04/27/2026 E1.25 Inch Franklin MO Public
Report from mPING: Half Dollar (1.25 in.).
0654 PM Hail 4 N Pacific 38.53N 90.75W
04/27/2026 E2.00 Inch Franklin MO Public
Report from mPING: Hen Egg (2.00 in.).
0655 PM Hail 2 NW Alton 38.93N 90.19W
04/27/2026 E1.50 Inch Madison IL Public
Report from mPING: Ping Pong Ball (1.50
in.).
0658 PM Hail 2 SW Clarkson Valley 38.60N 90.62W
04/27/2026 E1.00 Inch St. Louis MO Public
Report from mPING: Quarter (1.00 in.).
0659 PM Hail 1 NE Alton 38.91N 90.13W
04/27/2026 E1.00 Inch Madison IL Public
Report from mPING: Quarter (1.00 in.).
0700 PM Hail 2 N Wood River 38.89N 90.08W
04/27/2026 E1.25 Inch Madison IL Public
0707 PM Hail 1 NW Bethalto 38.91N 90.06W
04/27/2026 E1.75 Inch Madison IL Public
Report from mPING: Golf Ball (1.75 in.).
0708 PM Hail Bunker Hill 39.04N 89.95W
04/27/2026 E1.00 Inch Macoupin IL Public
Report from mPING: Quarter (1.00 in.).
0709 PM Hail 1 S Bunker Hill 39.02N 89.95W
04/27/2026 E1.00 Inch Macoupin IL Public
Report from mPING: Quarter (1.00 in.).
0711 PM Hail 3 W Carpenter 38.91N 89.95W
04/27/2026 E1.00 Inch Madison IL Public
Report from mPING: Quarter (1.00 in.).
0715 PM Hail 3 W Carpenter 38.91N 89.95W
04/27/2026 E1.25 Inch Madison IL Public
Report from mPING: Half Dollar (1.25 in.).
0718 PM Hail 2 S Benld 39.06N 89.81W
04/27/2026 E1.00 Inch Macoupin IL Public
Report from mPING: Quarter (1.00 in.).
0720 PM Hail Staunton 39.01N 89.78W
04/27/2026 E1.00 Inch Macoupin IL Public
Report from mPING: Quarter (1.00 in.).
0733 PM Hail 3 SE Columbia 38.43N 90.18W
04/27/2026 E1.00 Inch Monroe IL Public
Report from mPING: Quarter (1.00 in.).
&&Local storm report, Apr 27, 7:50 PM CDT, 41 minutes before
Preliminary Local Storm Report
National Weather Service St Louis MO
750 PM CDT Mon Apr 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0720 PM Tstm Wnd Dmg 1 E Richmond Heights 38.63N 90.31W
04/27/2026 St. Louis City MO Emergency Mngr
power line down on McCausland.
&&Local storm report, Apr 27, 7:54 PM CDT, 37 minutes before
Preliminary Local Storm Report
National Weather Service St Louis MO
754 PM CDT Mon Apr 27 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0740 PM Tstm Wnd Gst 1 S Swansea 38.53N 89.99W
04/27/2026 E55 MPH St. Clair IL Public
&&
MCFThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 7:09 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 51 min |
| Apr 27, 7:12 PM CDT | Severe Thunderstorm Warning | LSX | City of Saint Louis | 63 min |
| Apr 27, 7:27 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Washington | 48 min |
| Apr 27, 7:34 PM CDT | Areal Flood Advisory | LSX | Saint Louis, City of Saint Louis | 102 min |
| Apr 27, 8:00 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 25 min |
| Apr 27, 8:03 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois, Washington | 29 min |
| Apr 27, 8:05 PM CDT | Tornado Warning | LSX | Reynolds | 40 min |
| Apr 27, 10:37 PM CDT | River Flood Warning | LSX | Marion | 37 hr |
| Apr 27, 10:37 PM CDT | River Flood Warning | LSX | Marion | 56 hr |
| Apr 28, 3:13 AM CDT | River Flood Warning | LSX | Cole | 41 hr |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Saint Charles | 6 days |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Jefferson | 4 days |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Saint Charles | 5 days |
| Apr 28, 11:38 AM CDT | River Flood Warning | LSX | Saint Louis, City of Saint Louis | 5 days |
| Apr 28, 2:18 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 12 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 2026Every severe thunderstorm warning in 2026
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.