Alert archive / Illinois / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 203, NWS St. Louis, MO

June 30, 2023Madison County, Saint Clair County, Illinois; City of Saint Louis, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 30, 2023, 9:30 PM CDT for Madison County, Saint Clair County, Illinois; City of Saint Louis, Missouri. It was in force for 45 min. 9 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 30, 2023, 9:30 PM CDT (02:30 UTC)
Expired: Jun 30, 2023, 10:15 PM CDT
In force: 45 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Madison County, IL, Saint Clair County, IL, City of Saint Louis, MO

The radar

The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 02:30 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 30, 9:30 PM CDT	TSTM WND DMG	2 Ene Granite City, IL	Report from mPING: 3-inch tree limbs broken; Power poles broken.
Jun 30, 9:30 PM CDT	TSTM WND DMG	2 Ene Granite City, IL	Report from mPING: 3-inch tree limbs broken; Power poles broken.
Jun 30, 9:40 PM CDT	TSTM WND DMG	1 Ene Edwardsville, IL	Multiple tree limbs 6 inches in diameter down along Sheridan Ave. One tree 14 inches in diameter down in an alley way behind Sheridan Ave. Time estimated by radar.
Jun 30, 9:40 PM CDT	TSTM WND DMG	1 Ene Edwardsville, IL	Multiple tree limbs 6 inches in diameter down along Sheridan Ave. One tree 14 inches in diameter down in an alley way behind Sheridan Ave. Time estimated by radar.
Jun 30, 9:49 PM CDT	HAIL 1	2 Ene Glen Carbon, IL	Report from mPING: Quarter (1.00 in.).
Jun 30, 9:49 PM CDT	HAIL 1	2 Ene Glen Carbon, IL	Report from mPING: Quarter (1.00 in.).
Jun 30, 9:54 PM CDT	HAIL 1	1 Ne Glen Carbon, IL	Report from mPING: Quarter (1.00 in.).
Jun 30, 9:54 PM CDT	HAIL 1	1 Ne Glen Carbon, IL	Report from mPING: Quarter (1.00 in.).
Jun 30, 9:56 PM CDT	TSTM WND DMG	1 E Granite City, IL	Report from mPING: 3-inch tree limbs broken; Power poles broken.

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 5 storm reports to this severe thunderstorm warning; the first came 0 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
Jun 30, 3:53 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 2.5 hours before the alert went out and 196 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: 1315 J/kg
Mixed-layer CIN: -130 J/kg
Mixed-layer LCL: 1215 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted.

657 
WUUS53 KLSX 010230
SVRLSX
ILC119-163-MOC510-010315-
/O.NEW.KLSX.SV.W.0203.230701T0230Z-230701T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
930 PM CDT Fri Jun 30 2023

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Madison County in southwestern Illinois...
  Northern St. Clair County in southwestern Illinois...
  Eastern St. Louis City in east central Missouri...

* Until 1015 PM CDT.

* At 930 PM CDT, a severe thunderstorm was located over Fairmont
  City, moving east at 30 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  St. Louis, Belleville, Granite City, O'Fallon, East St. Louis,
  Collinsville, Edwardsville, Fairview Heights, Cahokia, Glen Carbon,
  Shiloh, Wood River, Highland, Troy, Maryville, Pontoon Beach,
  Centreville, Lebanon, Caseyville, and Washington Park.

This includes the following highways...
 Interstate 70 in Illinois between exits 21 and 30.
 Interstate 55 in Illinois near exit 23.
 Interstate 64 in Illinois between exits 9 and 14.

This also includes Scott Joplin Historic Site and Horseshoe Lake
State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3865 8971 3857 8971 3858 9021 3862 9023
      3870 9023 3873 9022 3877 9018 3880 9012
      3887 9010 3888 8964 3887 8960 3866 8959
TIME...MOT...LOC 0230Z 265DEG 27KT 3868 9010 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gosselin

4 follow-up statements

777 
WWUS53 KLSX 010244
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
944 PM CDT Fri Jun 30 2023

ILC119-163-MOC510-010315-
/O.CON.KLSX.SV.W.0203.000000T0000Z-230701T0315Z/
Madison IL-St. Clair IL-St. Louis City MO-
944 PM CDT Fri Jun 30 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHERN MADISON...AND NORTHERN ST. CLAIR COUNTIES IN
SOUTHWESTERN ILLINOIS AND EASTERN ST. LOUIS CITY...

At 944 PM CDT, a severe thunderstorm was located over Collinsville,
moving east at 30 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...
St. Louis, Belleville, Granite City, O'Fallon, East St. Louis,
Collinsville, Edwardsville, Fairview Heights, Cahokia, Glen Carbon,
Shiloh, Highland, Troy, Maryville, Pontoon Beach, Centreville,
Lebanon, Caseyville, Washington Park, and Madison.

This also includes Scott Joplin Historic Site and Horseshoe Lake
State Park.
 
This includes the following highways...
 Interstate 70 in Illinois between exits 21 and 30.
 Interstate 55 in Illinois near exit 23.
 Interstate 64 in Illinois between exits 9 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3865 8971 3857 8971 3858 9021 3862 9023
      3870 9023 3873 9022 3877 9018 3880 9012
      3884 9008 3886 8983 3887 8960 3866 8959
TIME...MOT...LOC 0244Z 265DEG 27KT 3869 8996 

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

$$

Gosselin

454 
WWUS53 KLSX 010256
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
956 PM CDT Fri Jun 30 2023

ILC119-163-MOC510-010315-
/O.CON.KLSX.SV.W.0203.000000T0000Z-230701T0315Z/
Madison IL-St. Clair IL-St. Louis City MO-
956 PM CDT Fri Jun 30 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHERN MADISON...AND NORTHERN ST. CLAIR COUNTIES IN
SOUTHWESTERN ILLINOIS AND EASTERN ST. LOUIS CITY...

At 955 PM CDT, a severe thunderstorm was located over Highland,
moving east at 20 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
St. Louis, Belleville, Granite City, O'Fallon, East St. Louis,
Collinsville, Edwardsville, Fairview Heights, Cahokia, Glen Carbon,
Shiloh, Highland, Troy, Maryville, Pontoon Beach, Centreville,
Lebanon, Caseyville, Washington Park, and Madison.

This also includes Scott Joplin Historic Site and Horseshoe Lake
State Park.
 
This includes the following highways...
 Interstate 70 in Illinois between exits 21 and 30.
 Interstate 55 in Illinois near exit 23.
 Interstate 64 in Illinois between exits 9 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3865 8971 3857 8971 3858 9021 3862 9023
      3870 9023 3873 9022 3877 9018 3879 9006
      3886 8983 3887 8960 3866 8959
TIME...MOT...LOC 0255Z 263DEG 18KT 3875 8969 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gosselin

098 
WWUS53 KLSX 010305
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1005 PM CDT Fri Jun 30 2023

MOC510-010315-
/O.CAN.KLSX.SV.W.0203.000000T0000Z-230701T0315Z/
St. Louis City MO-
1005 PM CDT Fri Jun 30 2023

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ST. LOUIS CITY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central and southwestern Illinois...and east central Missouri.

LAT...LON 3865 8971 3857 8971 3858 9021 3861 9018
      3865 9018 3868 9019 3871 9021 3872 9021
      3877 9017 3879 9006 3886 8983 3887 8960
      3866 8959
TIME...MOT...LOC 0305Z 263DEG 18KT 3876 8963 

$$

ILC119-163-010315-
/O.CON.KLSX.SV.W.0203.000000T0000Z-230701T0315Z/
Madison IL-St. Clair IL-
1005 PM CDT Fri Jun 30 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR SOUTHERN MADISON AND NORTHERN ST. CLAIR COUNTIES IN SOUTHWESTERN
ILLINOIS...

At 1005 PM CDT, a severe thunderstorm was located over Highland,
moving east at 20 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
St. Louis, Belleville, Granite City, O'Fallon, East St. Louis,
Collinsville, Edwardsville, Fairview Heights, Cahokia, Glen Carbon,
Shiloh, Highland, Troy, Maryville, Pontoon Beach, Centreville,
Lebanon, Caseyville, Washington Park, and Madison.

This also includes Horseshoe Lake State Park.
 
This includes the following highways...
 Interstate 70 in Illinois between exits 21 and 30.
 Interstate 55 in Illinois near exit 23.
 Interstate 64 in Illinois between exits 9 and 14.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3865 8971 3857 8971 3858 9021 3861 9018
      3865 9018 3868 9019 3871 9021 3872 9021
      3877 9017 3879 9006 3886 8983 3887 8960
      3866 8959
TIME...MOT...LOC 0305Z 263DEG 18KT 3876 8963 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gosselin

383 
WWUS53 KLSX 010316
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
1016 PM CDT Fri Jun 30 2023

ILC119-163-010326-
/O.EXP.KLSX.SV.W.0203.000000T0000Z-230701T0315Z/
Madison IL-St. Clair IL-
1016 PM CDT Fri Jun 30 2023

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MADISON AND NORTHERN
ST. CLAIR COUNTIES IN SOUTHWESTERN ILLINOIS HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central and southwestern Illinois...and east central Missouri.

LAT...LON 3865 8971 3857 8971 3858 9021 3861 9018
      3865 9018 3868 9019 3871 9021 3872 9021
      3877 9017 3879 9006 3886 8983 3887 8960
      3866 8959
TIME...MOT...LOC 0316Z 265DEG 27KT 3877 8953 

$$

Gosselin

What 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 Jun 30, 9:17 PM CDT, 13 minutes earlier.

Area forecast discussion, Jun 30, 9:17 PM CDT, 13 minutes before

Area Forecast Discussion...Updated
National Weather Service Saint Louis MO
917 PM CDT Fri Jun 30 2023

.MESOSCALE DISCUSSION...
Issued at 917 PM CDT Fri Jun 30 2023

Technical Discussion...

A stationary frontal boundary currently extends from Moniteau/Boone
Counties southeast through Ste. Genevieve County, MO. Thunderstorms
have initiated along and north of the front this afternoon and
continue to initiate at the time of writing. Some of these
thunderstorms have had histories of producing large hail and
damaging winds. The atmosphere is still primed for severe weather
as of 02z, with MUCAPE values of 3000 to 4000 J/kg, effective
bulk shear of 25 to 35 kts, and dewpoints in the low 70s. For this
reason, the severe thunderstorm watch remains valid until 04z
when severe parameters begin to give way to the diurnal curve. As
this occurs, the severe threat will gradually become more
isolated.

Thunderstorms are expected to redevelop later tonight as a series of
mid-level vorticity maxima interact with an intensifying low level
jet, stationary surface boundary, and abundant low-level moisture.
This round of thunderstorms is expected to be more widespread
and generally weaker than this afternoon's and evening's
convection.

Jaja

&&

.SHORT TERM...  (Through Late Saturday Night)
Issued at 234 PM CDT Fri Jun 30 2023

Earlier today, an MCS made its way across southern Iowa and northern
Missouri into north-central Illinois. As that MCS moved eastward,
an outflow boundary moved south and is interacting with a surface
boundary stretching across central Missouri. Along that boundary
there is a strong gradient of surface based CAPE. Convective
initiation is expected between now and 23Z and along and south of
the Missouri River as the outflow continues to interact with that
frontal boundary. Thunderstorms are expected to follow that CAPE
gradient and frontal boundary and travel southeast across central
Missouri into south-central Illinois. As of 19:20Z, current ACARS
soundings at STL are showing over surface base CAPE values nearing
4000 J/kg. With sufficient instability and 35 knots of 0-6km
shear, these storms could become strong to severe with the main
threat being strong winds and large hail. The storm threat looks
to be out of the area by the evening hours.

Hot and humid conditions will continue through the evening as dew
points from central Missouri through south-central Illinois are in
the mid to upper 70s. Temperatures are continuing to climb and are
expected to hit the upper 90s and low 100s by peak heating with heat
indexes between 105-110 degrees. The outflow boundary did keep
temperatures cooler across northern Missouri and west-central
Illinois where temperatures will struggle to reach 90 degrees. The
heat advisory continues near and south of the I-70 corridor and is
in effect through 8PM tonight.

Overnight the low level jet will ramp up and surge moisture into the
area just as a mid-level disturbance moves across the Mid-
Mississippi River Valley, providing another chance for showers and
thunderstorms through Saturday morning along and near the stalled
frontal boundary. The boundary is forecast to stall somewhere across
the northern 3rd of Missouri. With most unstable CAPE values around
2000 J/kg and strong moisture convergence, overnight rainfall looks
promising with some locations could receive an inch or more of
rain.

By Saturday afternoon, the surface low pressure system that is
associated with the stalled surface boundary will begin to move
eastward into western Missouri. The surface boundary will slowly
shift north, leaving much of the CWA in the warm sector. With the
area being in the warm sector, instability will ramp up throughout
the day. It is important to note that if the overnight showers
linger further into the morning, instability across northern
Missouri may be limited. However, in southeast Missouri and south-
central Illinois, current guidance has most unstable CAPE values
in excess of 2500 J/kg with 1-6km shear greater than 30kts. This
environment will be more than enough to support strong to severe
storms Saturday afternoon through the early evening. The greatest
threats are expected to be strong and damaging winds and large
hail. It looks as if LCL heights will remain rather high, limiting
the tornado potential.

Another round of showers and thunderstorms is forecast late Saturday
night into Sunday as the surface low pressure system finally makes
its way east and brings a cold front through the area.

MMG/Carney

.LONG TERM...  (Sunday through Next Friday)
Issued at 234 PM CDT Fri Jun 30 2023

Deterministic guidance remains in good agreement with respect to the
late weekend-early week forecast.  The short wave should be passing
overhead in the wake of the cold front on Sunday which is likely to
continue to produce enough synoptic-scale lift for more convection.
Current indications are that lower instability and shear values than
today and Saturday should really cut down on the chances for severe
weather, but MUCAPE values in excess of 1000 J/Kg still support the
inclusion of thunderstorms in the forecast.  Weak ridging builds
across the Mid Mississippi Valley on Monday, so we should stay
largely dry on Monday, though an isolated thunderstorm isn't out of
the question.  With somewhat cooler air moving in and the potential
for clouds/convection on Sunday, highs will likely stay in the
80s...and could be suppressed into the 70s in west central and south
central Illinois where there is more likely to occur.  With fewer
clouds and showers around on Monday, strong July sunshine should let
highs rebound back into the upper 80s to mid 90s.

The forecast becomes less certain for Tuesday through Friday as at
least two short wave troughs, and possibly an MCV two, move across
the Midwest.  LREF cluster analysis implies decreasing certainty in
the forecasts as the number of clusters increases from 2 or 3
solutions for Sunday/Monday, to 3-4 solutions for the rest of the
week.  Additionally, the differences in the clusters are minor for
Sunday/Monday and are primarily with the amplitude of the ridge
upstream of Sunday's short wave.  The number of clusters increases
to 3-4 for Tuesday-Friday, and the differences between clusters
becomes more pronounced.  EOF patterns suggest both timing and
amplitude differences in the weather pattern, particularly with
respect to a deepening long wave trough over the eastern U.S. toward
the end of the period.  Temperature spreads on the box and whisker
plots increase correspondingly toward the end of the week as well.
However, the pattern does favor warmer temperatures
Tuesday/Wednesday ahead of the long wave trough, trending cooler
Thursday/Friday with more clouds and precip associated with the
trough.

Carney

&&

.AVIATION...  (For the 00z TAFs through 00z Saturday Evening)
Issued at 623 PM CDT Fri Jun 30 2023

Currently, a stalled front is sitting in a line extending
roughly from Boone County, MO through Ste. Genevieve County,
MO/Randolph County, IL. This has provided a focus for thunderstorm
development this afternoon primarily along the I-70 corridor in
central and east central Missouri. Some of these thunderstorms have
had histories of producing large hail and damaging winds.
Thunderstorms are expected to move east this evening ahead of
additional thunderstorm development overnight. These thunderstorms
will likely be broader in coverage, but weaker in strength,
impacting mainly northeast Missouri and west central Illinois.
Confidence is high in strong to severe thunderstorms returning
Saturday afternoon. Otherwise, VFR conditions are expected through
the TAF period.

Jaja

&&

.PRELIMINARY POINT TEMPS/POPS...
Saint Louis     76  94  71  86 /  70  70  70  60
Quincy          71  86  68  83 /  70  80  80  60
Columbia        73  89  67  87 /  50  70  70  40
Jefferson City  73  92  68  89 /  50  70  60  40
Salem           73  93  69  86 /  70  60  70  70
Farmington      73  97  68  89 /  30  60  60  50

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...None.
IL...None.
&&

WFO LSX

Hazardous weather outlook, Jun 30, 2:59 PM CDT, 6 hours 31 minutes before

Hazardous Weather Outlook
National Weather Service St Louis MO
259 PM CDT Fri Jun 30 2023

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-012000-
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-
259 PM CDT Fri Jun 30 2023

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Tonight.

Scattered thunderstorms are expected tonight. Some of the storms
could be severe...primarily this evening. Wind gusts up to 70 mph and
2 inch diameter hail are the primary threats with storms this
evening. More storms are likely overnight tonight. Large hail will
be a continuing threat with the overnight storms.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Thunderstorms are likely again on Saturday, mainly in the afternoon.
Some storms on Saturday could produce large hail and damaging winds.
The chance for storms continues on Sunday, and again Tuesday through
Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed this evening.

Carney

In the hours before

Local storm report, Jun 30, 9:14 PM CDT, 16 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
914 PM CDT Fri Jun 30 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0914 PM     Hail             1 SSW Saint John        38.70N 90.35W
06/30/2023  E1.00 inch       St. Louis          MO   Public

&&

PW

Local storm report, Jun 30, 9:17 PM CDT, 13 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
917 PM CDT Fri Jun 30 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0916 PM     Hail             Woodson Terrace         38.73N 90.37W
06/30/2023  E1.50 inch       St. Louis          MO   Trained Spotter

&&

KD

Local storm report, Jun 30, 9:18 PM CDT, 12 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
918 PM CDT Fri Jun 30 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0918 PM     Hail             Ferguson                38.75N 90.30W
06/30/2023  M1.00 inch       St. Louis          MO   Public

&&

PW

Local storm report, Jun 30, 9:20 PM CDT, 10 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
920 PM CDT Fri Jun 30 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0919 PM     Hail             Cool Valley             38.73N 90.31W
06/30/2023  E1.00 inch       St. Louis          MO   Trained Spotter

&&

KD

Local storm report, Jun 30, 9:21 PM CDT, 9 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
921 PM CDT Fri Jun 30 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0909 PM     Tstm Wnd Dmg     1 W Ladue               38.64N 90.40W
06/30/2023                   St. Louis          MO   Law Enforcement

            Large tree down blocking road.

&&

PW

Local storm report, Jun 30, 9:22 PM CDT, 8 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
922 PM CDT Fri Jun 30 2023

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0901 PM     Tstm Wnd Dmg     1 SSW Creve Coeur       38.65N 90.44W
06/30/2023                   St. Louis          MO   Law Enforcement

            Large limbs down on roadway.

&&

PW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 7:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Saint Clair, Washington	49 min
Jun 30, 7:45 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Washington	30 min
Jun 30, 8:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Washington	31 min
Jun 30, 8:38 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison	23 min
Jul 1, 1:23 AM CDT	Severe Thunderstorm Warning	LSX	Macoupin, Montgomery	37 min
Jul 1, 2:39 AM CDT	Areal Flood Advisory	LSX	Adams, Brown	17 min
Jul 1, 2:53 AM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	39 min
Jul 1, 2:56 AM CDT	Flash Flood Warning	LSX	Adams, Brown	2 hr
Jul 1, 3:10 PM CDT	Severe Thunderstorm Warning	LSX	Washington	38 min
Jul 1, 3:20 PM CDT	Severe Thunderstorm Warning	LSX	Madison	40 min
Jul 1, 3:32 PM CDT	Severe Thunderstorm Warning	LSX	Madison	43 min
Jul 1, 3:39 PM CDT	Severe Thunderstorm Warning	LSX	Saint Clair	21 min
Jul 1, 3:54 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	51 min
Jul 1, 3:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Madison, Saint Clair	47 min
Jul 1, 4:00 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	38 min
Jul 1, 4:06 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey	39 min
Jul 1, 4:08 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Fayette, Marion	37 min
Jul 1, 4:16 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Washington	14 min
Jul 1, 4:21 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Montgomery	39 min
Jul 1, 4:34 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Randolph, Saint Clair, Washington	41 min
Jul 1, 4:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Calhoun, Greene, Pike	18 min
Jul 1, 4:54 PM CDT	Tornado Warning	LSX	Washington	20 min
Jul 1, 5:04 PM CDT	Areal Flood Advisory	LSX	Washington	3 hr
Jul 1, 5:13 PM CDT	Severe Thunderstorm Warning	LSX	Marion	47 min
Jun 30, 7:14 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike	46 min
Jun 30, 7:53 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Warren	33 min
Jun 30, 8:56 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	34 min
Jun 30, 9:09 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	23 min
Jun 30, 9:35 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, Warren	19 min
Jun 30, 9:41 PM CDT	Areal Flood Advisory	LSX	Saint Louis, City of Saint Louis	3 hr
Jul 1, 1:49 AM CDT	Areal Flood Advisory	LSX	Monroe, Shelby	110 min
Jul 1, 3:06 AM CDT	Severe Thunderstorm Warning	LSX	Callaway	39 min
Jul 1, 3:18 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Warren	42 min
Jul 1, 2:34 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	41 min
Jul 1, 2:48 PM CDT	Severe Thunderstorm Warning	LSX	Washington	32 min
Jul 1, 2:59 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Washington	46 min
Jul 1, 3:36 PM CDT	Areal Flood Advisory	LSX	Saint Charles, Saint Louis	3 hr
Jul 1, 5:16 PM CDT	Areal Flood Advisory	LSX	Saint Charles, Warren	3 hr

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.