Alert archive / Missouri / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 211, NWS St. Louis, MO

July 1, 2023Franklin County, Jefferson County, Washington County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 1, 2023, 2:59 PM CDT for Franklin County, Jefferson County, Washington County, Missouri. It was in force for 46 min. 6 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: Jul 1, 2023, 2:59 PM CDT (19:59 UTC)
Expired: Jul 1, 2023, 3:45 PM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Franklin County, MO, Jefferson County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 44 km from the middle of the area, began a volume at 20:00 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
Jul 1, 3:08 PM CDT	TSTM WND DMG	Sullivan, MO	Via Facebook with picture included: Tree toppled over. Does not seem to have substantial root system.
Jul 1, 3:10 PM CDT	TSTM WND DMG	3 Nne Anthonies Mill, MO	Numerous campers, awnings, trees, and power lines damaged in the Woodland Lakes community. Time estimated.
Jul 1, 3:19 PM CDT	TSTM WND DMG	5 Sw Piney Park, MO	Via Facebook with picture included: Numerous trees down along Hwy 185, Hwy K, Hwy 30. Damage to camper in that area due to fallen tree.
Jul 1, 3:23 PM CDT	TSTM WND DMG	3 Ssw Piney Park, MO	Trees down along Highway K between St. Clair and Sullivan. Time estimated from radar.
Jul 1, 3:30 PM CDT	TSTM WND DMG	Dittmer, MO	Via Facebook with picture included: Several small to medium trees branches down in different areas of town. Damage to some outdoor structures.
Jul 1, 3:42 PM CDT	TSTM WND DMG	Hillsboro, MO	Trees down in Hillsboro.

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 6 storm reports to this severe thunderstorm warning; the first came 9 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
Jul 1, 12:04 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.0 hours before the alert went out and 280 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: 59 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1240 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

403 
WUUS53 KLSX 011959
SVRLSX
MOC071-099-221-012045-
/O.NEW.KLSX.SV.W.0211.230701T1959Z-230701T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
259 PM CDT Sat Jul 1 2023

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for...
  Northwestern Jefferson County in east central Missouri...
  Northern Washington County in east central Missouri...
  Southeastern Franklin County in east central Missouri...

* Until 345 PM CDT.

* At 259 PM CDT, severe thunderstorms were located along a line
  extending from Leasburg to near Anthonies Mill to 6 miles north of
  Courtois, moving northeast at 65 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Union, Sullivan, Pacific, St. Clair, Hillsboro, Villa Ridge, Cedar
  Hill, Anthonies Mill, Parkway, Cedar Hill Lakes, Miramiguoa Park,
  Richwoods, Dittmer, Lonedell, Scotsdale, Stanton, Morse Mill,
  Oermann, Robertsville, and Catawissa.

This includes Interstate 44 in Missouri between exits 225 and 251.
 
This also includes Sandy Creek Covered Bridge Historic Site,
Robertsville State Park, and Meramec State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3791 9109 3820 9110 3821 9120 3848 9090
      3848 9072 3847 9069 3845 9069 3845 9066
      3848 9066 3848 9063 3826 9048
TIME...MOT...LOC 1959Z 222DEG 59KT 3807 9129 3803 9115 3786 9110 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Pfahler

4 follow-up statements

154 
WWUS53 KLSX 012006
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
306 PM CDT Sat Jul 1 2023

MOC071-099-221-012045-
/O.CON.KLSX.SV.W.0211.000000T0000Z-230701T2045Z/
Jefferson MO-Washington MO-Franklin MO-
306 PM CDT Sat Jul 1 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR NORTHWESTERN JEFFERSON...NORTHERN WASHINGTON AND SOUTHEASTERN
FRANKLIN COUNTIES...

At 306 PM CDT, severe thunderstorms were located along a line
extending from near Bourbon to Anthonies Mill to 12 miles north of
Courtois, moving northeast at 70 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Union, Sullivan, Pacific, St. Clair, Hillsboro, Villa Ridge, Cedar
Hill, Anthonies Mill, Parkway, Cedar Hill Lakes, Miramiguoa Park,
Richwoods, Dittmer, Lonedell, Scotsdale, Stanton, Morse Mill,
Oermann, Robertsville, and Catawissa.

This also includes Sandy Creek Covered Bridge Historic Site,
Robertsville State Park, and Meramec State Park.
 
This includes Interstate 44 in Missouri between exits 225 and 251.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3791 9109 3820 9110 3821 9120 3848 9090
      3848 9072 3847 9069 3845 9069 3845 9066
      3848 9066 3848 9063 3826 9048
TIME...MOT...LOC 2006Z 222DEG 61KT 3815 9121 3811 9106 3794 9101 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Pfahler

104 
WWUS53 KLSX 012018
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
318 PM CDT Sat Jul 1 2023

MOC071-099-221-012045-
/O.CON.KLSX.SV.W.0211.000000T0000Z-230701T2045Z/
Jefferson MO-Washington MO-Franklin MO-
318 PM CDT Sat Jul 1 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR NORTHWESTERN JEFFERSON...NORTHERN WASHINGTON AND SOUTHEASTERN
FRANKLIN COUNTIES...

At 318 PM CDT, severe thunderstorms were located along a line
extending from near Miramiguoa Park to 6 miles southwest of Lonedell
to 7 miles west of Old Mines, moving northeast at 60 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Union, Sullivan, Pacific, St. Clair, Hillsboro, Villa Ridge, Cedar
Hill, Parkway, Cedar Hill Lakes, Miramiguoa Park, Richwoods, Dittmer,
Lonedell, Scotsdale, Stanton, Morse Mill, Oermann, Robertsville,
Catawissa, and Fletcher.

This also includes Sandy Creek Covered Bridge Historic Site and
Robertsville State Park.
 
This includes Interstate 44 in Missouri between exits 230 and 251.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3796 9101 3817 9102 3824 9117 3848 9090
      3848 9072 3847 9069 3845 9069 3845 9066
      3848 9066 3848 9063 3826 9048
TIME...MOT...LOC 2018Z 226DEG 52KT 3829 9107 3825 9092 3804 9090 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Pfahler

818 
WWUS53 KLSX 012034
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
334 PM CDT Sat Jul 1 2023

MOC221-012044-
/O.CAN.KLSX.SV.W.0211.000000T0000Z-230701T2045Z/
Washington MO-
334 PM CDT Sat Jul 1 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WASHINGTON COUNTY IS
CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
east central Missouri.

LAT...LON 3820 9079 3831 9082 3838 9101 3848 9090
      3847 9073 3848 9072 3847 9071 3847 9069
      3845 9069 3845 9066 3848 9066 3848 9063
      3832 9052 3818 9076
TIME...MOT...LOC 2034Z 230DEG 46KT 3843 9089 3839 9074 3818 9072 

$$

MOC071-099-012045-
/O.CON.KLSX.SV.W.0211.000000T0000Z-230701T2045Z/
Jefferson MO-Franklin MO-
334 PM CDT Sat Jul 1 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM CDT
FOR NORTHWESTERN JEFFERSON AND SOUTHEASTERN FRANKLIN COUNTIES...

At 334 PM CDT, severe thunderstorms were located along a line
extending from near Villa Ridge to near Dittmer to 6 miles east of
Richwoods, moving northeast at 55 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Union, Pacific, St. Clair, Villa Ridge, Cedar Hill, Cedar Hill Lakes,
Dittmer, Scotsdale, Morse Mill, Oermann, Robertsville, Catawissa,
Moselle, and Grubville.

This also includes Robertsville State Park.
 
This includes Interstate 44 in Missouri between exits 242 and 247.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3820 9079 3831 9082 3838 9101 3848 9090
      3847 9073 3848 9072 3847 9071 3847 9069
      3845 9069 3845 9066 3848 9066 3848 9063
      3832 9052 3818 9076
TIME...MOT...LOC 2034Z 230DEG 46KT 3843 9089 3839 9074 3818 9072 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Pfahler

883 
WWUS53 KLSX 012043
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
343 PM CDT Sat Jul 1 2023

MOC071-099-012053-
/O.EXP.KLSX.SV.W.0211.000000T0000Z-230701T2045Z/
Jefferson MO-Franklin MO-
343 PM CDT Sat Jul 1 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN JEFFERSON AND
SOUTHEASTERN FRANKLIN COUNTIES WILL EXPIRE AT 345 PM CDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
east central Missouri.

LAT...LON 3820 9079 3831 9082 3838 9101 3848 9090
      3847 9073 3848 9072 3847 9071 3847 9069
      3845 9069 3845 9066 3848 9066 3848 9063
      3832 9052 3818 9076
TIME...MOT...LOC 2043Z 222DEG 59KT 3851 9080 3847 9065 3826 9063 

$$

Pfahler

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 Jul 1, 2:23 PM CDT, 36 minutes earlier.

Area forecast discussion, Jul 1, 2:23 PM CDT, 36 minutes before

Area Forecast Discussion
National Weather Service Saint Louis MO
223 PM CDT Sat Jul 1 2023

.SHORT TERM...  (Through Late Sunday Night)
Issued at 222 PM CDT Sat Jul 1 2023

Last nights thunderstorms that went over northern and central
Missouri and central Illinois produced an outflow boundary that at
16Z was located across southeast Missouri and the far southern
portions of Illinois. The outflow boundary has since dissipated,
allowing 75+ dew points to surge north along the Mississippi River,
keeping hot and humid conditions today along and south of the I-70
corridor.

Clouds this morning covered much of the CWA and limited late morning
destabilization. However, clearing has allowed for the atmosphere to
quickly destabilize. Along the clearing boundary, there is a surface-
based CAPE gradient with values in excess of 3000 J/kg, 40kts of 0-
6km bulk shear, and CIN quickly diminishing. An 18:30Z ACARS
sounding at STL are showing surface based CAPE values nearing 3000
J/kg.

To the west of us, ahead of a shortwave trough there is an area of
increased vorticity advection along with an area of surface
convergence that is traversing eastward. As this moves eastward, the
area of surface convergence will interact with the instability and
strong 0-6km bulk shear and will be more than enough to support
strong and severe thunderstorms this afternoon into the evening. The
main threats will be strong and damaging winds and large hail,
however a few brief tornados cannot be ruled out. The location of
the strong to severe thunderstorms will be along and south of the I-
70 corridor, including the St. Louis Metropolitan area where a
CAPE gradient is located. Because of this increased chance for
severe thunderstorms, a Severe Thunderstorm Watch is in effect
until 9PM this evening.

Overnight tonight, the shortwave trough and an upper low will make
its way into the Mid-Mississippi River Valley. This will help
finally push a surface low pressure system and its associated cold
front through the area by the overnight hours. With sufficient lift
from the cold front and increased upward vertical motion, there is
another chance of showers and thunderstorms overnight into tomorrow
morning. Instability overnight will be greatest in the southern
portions of the CWA with guidance indicating over 1500 J/kg. With
this instability and decent mid-level lapse rates, thunderstorms
will have the potential to become strong to severe.

Showers and thunderstorms are forecast to be out of the area by
Sunday afternoon, leaving dry and cooler temperatures to close out
the holiday weekend.

MMG/Carney

.LONG TERM...  (Monday through Next Saturday)
Issued at 222 PM CDT Sat Jul 1 2023

Briefly, in the medium range...Monday continues to look like it will
have the least chance for precip out of the next 7 days. Short wave
ridging builds over the Midwest ahead of another upstream short wave
trough, and this should suppress convection across our forecast
area.  The aforementioned trough drifts east across the Mid
Mississippi Valley on Tuesday, and though there isn't any obvious
surface boundary/trigger, there will probably be enough lift to
produce widely scattered showers and thunderstorms.  Currently,
CAPE/shear values are such that any storms that form will likely not
be particularly strong/organized, but they could certainly rain on a
few Independence Day Parades.  Deterministic guidance is now showing
a stronger/more robust short wave trough moving through the Midwest
Wednesday/Thursday which forces a stronger and better defined cold
front through our area during that time frame.  However LREF cluster
analysis still shows variance in timing and amplitude of the trough,
and while the Wednesday/Thursday period still looks most likely for
rain/thunderstorms confidence remains somewhat low on exactly when
the rain will occur, and how strong storms will be/how much rain
will fall.  PoPs fall off to chance/slight chance behind the front
on Friday/Saturday.

Carney

&&

.AVIATION...  (For the 18z TAFs through 18z Sunday Afternoon)
Issued at 1247 PM CDT Sat Jul 1 2023

Thunderstorms remain the primary aviation concern at least through
tonight. Scattered storms have already developed over southern
Missouri and these storms will move northeast through the
afternoon into east central Missouri and southwest Illinois. Wind
gusts in excess of 50kts and 1 inch diameter or greater hail will
be possible with these storms. Another area of scattered storms
is expected to develop over western Missouri during the evening
and move into central Missouri between 02-04Z. These storms are
expected to move east through the late evening into the overnight
hours across east central Missouri and southwest Illinois. Hail
will be the primary threat from this second area of storms.
Outside of the thunderstorms, an area of low MVFR ceilings is
expected to overspread much of the area late tonight into Sunday
morning as an upper level disturbance moves east across the
Mississippi Valley. Ceilings should gradually rise from late
Sunday morning into the afternoon.

Carney

&&

.PRELIMINARY POINT TEMPS/POPS...
Saint Louis     71  87  71  92 /  50  20   0  10
Quincy          68  83  66  89 /  30  40   5  10
Columbia        67  86  68  92 /  50  10   0  10
Jefferson City  68  89  68  94 /  50  10   0  10
Salem           70  85  66  90 /  60  40   5  10
Farmington      68  89  65  92 /  50  20   5  10

&&

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

WFO LSX

Hazardous weather outlook, Jul 1, 3:54 AM CDT, 11 hours 5 minutes before

Hazardous Weather Outlook
National Weather Service St Louis MO
354 AM CDT Sat Jul 1 2023

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-020900-
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-
354 AM CDT Sat Jul 1 2023

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.

Scattered thunderstorms will persist through mid-morning today, with
localized gusty winds, large hail, and minor flooding possible.

More significant thunderstorms are likely to redevelop during the
afternoon today, with damaging straight line winds and large hail as
the primary threats.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Scattered weak thunderstorms will be possible in a few areas Sunday.
While Monday is expected to be largely dry, chances for
thunderstorms return Tuesday through Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

19

In the hours before

Local storm report, Jul 1, 9:15 AM CDT, 5 hours 44 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
915 AM CDT Sat Jul 1 2023

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

0931 PM     Hail             Ferguson                38.74N 90.30W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

&&

MRB

Local storm report, Jul 1, 9:16 AM CDT, 5 hours 43 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
916 AM CDT Sat Jul 1 2023

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

0910 PM     Hail             1 NE Saint John         38.72N 90.34W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

&&

MRB

Local storm report, Jul 1, 9:17 AM CDT, 5 hours 42 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
917 AM CDT Sat Jul 1 2023

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

0305 AM     Tstm Wnd Dmg     2 SSE Quincy            39.91N 91.38W
07/01/2023                   Adams              IL   Public

            Report from mPING: 3-inch tree limbs broken;
            Power poles broken.

&&

MRB

Local storm report, Jul 1, 9:19 AM CDT, 5 hours 40 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
919 AM CDT Sat Jul 1 2023

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

0917 PM     Hail             1 NE Saint John         38.72N 90.34W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

&&

MRB

Local storm report, Jul 1, 9:20 AM CDT, 5 hours 39 minutes before

Preliminary Local Storm Report...Summary
National Weather Service St Louis MO
920 AM CDT Sat Jul 1 2023

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

0435 PM     Hail             1 WNW Kimmswick         38.37N 90.38W
06/30/2023  M0.75 inch       Jefferson          MO   Trained Spotter

            Emailed picture indicated the stone was
            slightly less than nickel-sized.

0447 PM     Hail             Mokane                  38.67N 91.87W
06/30/2023  M1.00 inch       Callaway           MO   Public

0503 PM     Hail             3 SW Chamois            38.65N 91.81W
06/30/2023  M1.50 inch       Osage              MO   NWS Employee

0506 PM     Hail             Chamois                 38.68N 91.77W
06/30/2023  E2.00 inch       Osage              MO   NWS Employee

0508 PM     Hail             Chamois                 38.68N 91.77W
06/30/2023  E1.50 inch       Osage              MO   Public

            Chamois resident observed hail between peas
            up to ping pong balls.

0515 PM     Hail             1 ENE Chamois           38.68N 91.75W
06/30/2023  E1.00 inch       Osage              MO   CO-OP Observer

            Quarter-sized hail at Mark Lieneke farm.

0532 PM     Hail             Gasconade               38.67N 91.55W
06/30/2023  E1.50 inch       Gasconade          MO   Public

0550 PM     Hail             1 NNE Oakville          38.46N 90.31W
06/30/2023  M1.00 inch       St. Louis          MO   Public

0600 PM     Hail             1 ESE Wildwood          38.58N 90.64W
06/30/2023  E1.75 inch       St. Louis          MO   Public

0601 PM     Hail             1 ESE Mehlville         38.50N 90.30W
06/30/2023  M1.00 inch       St. Louis          MO   Public

0602 PM     Hail             2 NNE Oakville          38.47N 90.30W
06/30/2023  E1.25 inch       St. Louis          MO   Trained Spotter

            At the intersection of Telegraph Road and
            Cliff Cave Road.

0605 PM     Hail             2 NNE Eureka            38.52N 90.63W
06/30/2023  M1.50 inch       St. Louis          MO   Public

0606 PM     Hail             1 WSW Eureka            38.50N 90.66W
06/30/2023  E1.75 inch       St. Louis          MO   Public

            Half dollar size and larger hail in Eureka,
            Legends area.

0608 PM     Hail             1 E Eureka              38.50N 90.63W
06/30/2023  M1.00 inch       St. Louis          MO   Trained Spotter

0610 PM     Hail             1 ENE Eureka            38.51N 90.62W
06/30/2023  M1.00 inch       St. Louis          MO   Public

0612 PM     Hail             2 NE Pacific            38.50N 90.72W
06/30/2023  E1.75 inch       St. Louis          MO   Public

            Report from mPING: Golf Ball (1.75 in.).

0616 PM     Tstm Wnd Dmg     3 NW Parkdale           38.51N 90.56W
06/30/2023                   St. Louis          MO   Public

            Large tree blow over.

0628 PM     Tstm Wnd Dmg     High Ridge              38.46N 90.54W
06/30/2023                   Jefferson          MO   Public

            5 trees the size of power poles blown down
            in High Ridge, MO.

0629 PM     Hail             2 SSW Ballwin           38.57N 90.56W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

0639 PM     Tstm Wnd Dmg     1 NE Oakville           38.46N 90.31W
06/30/2023                   St. Louis          MO   Public

            Corrects previous tstm wnd dmg report from 1
            NE Oakville. 3 limbs down and flagpole bent
            over.

0639 PM     Tstm Wnd Dmg     1 ENE Oakville          38.45N 90.30W
06/30/2023                   St. Louis          MO   Public

            Corrects previous tstm wnd dmg report from 1
            ENE Oakville. Report from mPING: Trees
            uprooted or snapped; Roof blown off. Time
            estimated from radar.

0641 PM     Tstm Wnd Dmg     Arnold                  38.42N 90.38W
06/30/2023                   Jefferson          MO   Trained Spotter

            Numerous tree branches up to 4 inches in
            diameter littered the ground.

0645 PM     Tstm Wnd Dmg     1 NW Arnold             38.44N 90.38W
06/30/2023                   Jefferson          MO   Public

            An eighteen-wheeler fell on its side in the
            Walmart parking lot in Arnold, Missouri,
            next to a heavily damaged fireworks tent.

0646 PM     Tstm Wnd Dmg     1 SE Columbia           38.44N 90.20W
06/30/2023                   Monroe             IL   Public

            Corrects previous tstm wnd dmg report from 1
            SE Columbia. Trees and power lines down at
            the intersection of St. Paul Street and
            Gardner Street.

0649 PM     Tstm Wnd Dmg     2 SE Columbia           38.44N 90.19W
06/30/2023                   Monroe             IL   Public

            Corrects previous tstm wnd dmg report from 2
            SE Columbia. Large tree blown over. Limbs
            blocking Illinois Route 3.

0650 PM     Tstm Wnd Dmg     1 S Mehlville           38.48N 90.32W
06/30/2023                   St. Louis          MO   Public

            12-inch diameter trees limbs were thrown 40
            ft.

0653 PM     Rain             1 NW Murphy             38.51N 90.50W
06/30/2023  M1.05 inch       St. Louis          MO   Public

            1.05 inches storm total and some pea sized
            hail. 2 miles SW of Fenton.

0655 PM     Tstm Wnd Dmg     1 NW Barr               38.42N 90.11W
06/30/2023                   St. Clair          IL   Public

            Lots of mature trees blown down onto
            Bohleysville Road south southwest of
            Millstadt. Via Facebook.

0656 PM     Tstm Wnd Gst     3 ENE New Handover      38.41N 90.17W
06/30/2023  E60 MPH          Monroe             IL   Trained Spotter

            Estimated 60 mph winds and nickel sized
            hail.

0705 PM     Tstm Wnd Dmg     Smithton                38.41N 89.99W
06/30/2023                   St. Clair          IL   Public

            Tree down in Smithton, IL. Picture via
            Twitter.

0711 PM     Tstm Wnd Dmg     Freeburg                38.42N 89.91W
06/30/2023                   St. Clair          IL   Emergency Mngr

            Damage city wide. Power poles blown down and
            top of silo blown off. Various size limbs
            all over roads.

0716 PM     Tstm Wnd Gst     1 S Freeburg            38.42N 89.91W
06/30/2023  M69 MPH          St. Clair          IL   Emergency Mngr

            EM at the Freeburg EMA office reported wind
            gust and power outage.

0718 PM     Hail             3 SW Middletown         39.10N 91.46W
06/30/2023  M1.50 inch       Montgomery         MO   Trained Spotter

0718 PM     Hail             2 SW Middletown         39.11N 91.44W
06/30/2023  E1.50 inch       Montgomery         MO   Public

0720 PM     Tstm Wnd Dmg     4 SSE Mascoutah         38.46N 89.77W
06/30/2023                   St. Clair          IL   Public

            8 ft diameter tree blown over.

0720 PM     Hail             Middletown              39.13N 91.41W
06/30/2023  M1.50 inch       Montgomery         MO   Public

0731 PM     Tstm Wnd Dmg     Saint Libory            38.36N 89.72W
06/30/2023                   St. Clair          IL   Trained Spotter

            Significant tree damage in St. Libory. Home
            sustained damage to the roof and several
            limbs snapped.

0734 PM     Tstm Wnd Dmg     Venedy                  38.40N 89.65W
06/30/2023                   Washington         IL   Public

            Corrects previous tstm wnd dmg report from
            Venedy. Widespread tree damage around town.
            Numerous large trees blown down as well as
            tree limbs and power lines. Via pictures on
            Facebook.

0736 PM     Hail             1 WNW Fayetteville      38.38N 89.81W
06/30/2023  E1.00 inch       St. Clair          IL   Public

            Report from mPING: Quarter (1.00 in.).

0737 PM     Tstm Wnd Dmg     2 SW Okawville          38.41N 89.57W
06/30/2023                   Washington         IL   Public

            Multiple large treetops blown off.

0737 PM     Tstm Wnd Dmg     1 S Okawville           38.41N 89.55W
06/30/2023                   Washington         IL   Public

            4 tree limbs down.

0745 PM     Tstm Wnd Dmg     Addieville              38.39N 89.49W
06/30/2023                   Washington         IL   Public

            Report from mPING: 3-inch tree limbs broken;
            Power poles broken.

0747 PM     Tstm Wnd Dmg     3 W Nashville           38.35N 89.43W
06/30/2023                   Washington         IL   Public

            Report from mPING: Trees uprooted or
            snapped; Roof blown off.

0753 PM     Tstm Wnd Dmg     Nashville               38.35N 89.38W
06/30/2023                   Washington         IL   Emergency Mngr

            Wind damage reported throughout the town of
            Nashville, IL by the county emergency
            manager.

0754 PM     Tstm Wnd Dmg     2 SW Okawville          38.41N 89.57W
06/30/2023                   Washington         IL   Public

            Barn and machine shed destroyed.

0757 PM     Tstm Wnd Dmg     Nashville               38.34N 89.38W
06/30/2023                   Washington         IL   Public

            Large tree down.

0801 PM     Hail             2 WNW Olivette          38.68N 90.40W
06/30/2023  M1.25 inch       St. Louis          MO   Public

0805 PM     Hail             Hawk Point              38.97N 91.13W
06/30/2023  E1.25 inch       Lincoln            MO   Public

0807 PM     Hail             Hawk Point              38.97N 91.13W
06/30/2023  E1.50 inch       Lincoln            MO   Broadcast Media

0810 PM     Tstm Wnd Dmg     Ashley                  38.33N 89.19W
06/30/2023                   Washington         IL   Trained Spotter

            Widespread wind damage around town. Numerous
            large trees blown down, one fell onto a
            house. Also, a number of trees blown down
            onto Illinois Route 15. Lots of tree limbs
            and power lines down as well.

0810 PM     Hail             1 ENE Overland          38.70N 90.36W
06/30/2023  E1.25 inch       St. Louis          MO   Public

0830 PM     Hail             4 SE Troy               38.69N 89.85W
06/30/2023  E1.25 inch       Madison            IL   Amateur Radio

0848 PM     Hail             3 SE Troy               38.71N 89.85W
06/30/2023  E1.00 inch       Madison            IL   Public

            Report from mPING: Quarter (1.00 in.).

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.

0904 PM     Tstm Wnd Dmg     1 SSE Olivette          38.65N 90.37W
06/30/2023                   St. Louis          MO   Law Enforcement

            Multiple trees on roadways.

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.

0910 PM     Tstm Wnd Dmg     1 ENE Frontenac         38.63N 90.41W
06/30/2023                   St. Louis          MO   Public

            Report from mPING: 3-inch tree limbs broken;
            Power poles broken.

0910 PM     Hail             1 NE Saint John         38.72N 90.34W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

0912 PM     Hail             1 SE Woodson Terrace    38.72N 90.35W
06/30/2023  M1.00 inch       St. Louis          MO   Trained Spotter

0912 PM     Hail             Saint John              38.71N 90.35W
06/30/2023  E1.00 inch       St. Louis          MO   Public

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

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

0917 PM     Hail             1 NE Saint John         38.72N 90.34W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

0918 PM     Hail             1 NE Saint John         38.72N 90.34W
06/30/2023  E1.25 inch       St. Louis          MO   Public

            Report from mPING: Half Dollar (1.25 in.).

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

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

0921 PM     Hail             1 E Clayton             38.65N 90.31W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

0930 PM     Tstm Wnd Dmg     2 ENE Granite City      38.73N 90.11W
06/30/2023                   Madison            IL   Public

            Report from mPING: 3-inch tree limbs broken;
            Power poles broken.

0931 PM     Hail             Ferguson                38.74N 90.30W
06/30/2023  E1.00 inch       St. Louis          MO   Public

            Report from mPING: Quarter (1.00 in.).

0940 PM     Tstm Wnd Dmg     1 ENE Edwardsville      38.81N 89.95W
06/30/2023                   Madison            IL   Trained Spotter

            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.

0949 PM     Hail             2 ENE Glen Carbon       38.77N 89.93W
06/30/2023  E1.00 inch       Madison            IL   Public

            Report from mPING: Quarter (1.00 in.).

0954 PM     Hail             1 NE Glen Carbon        38.77N 89.96W
06/30/2023  E1.00 inch       Madison            IL   Public

            Report from mPING: Quarter (1.00 in.).

0956 PM     Tstm Wnd Dmg     1 E Granite City        38.71N 90.11W
06/30/2023                   Madison            IL   Public

            Report from mPING: 3-inch tree limbs broken;
            Power poles broken.

1006 PM     Tstm Wnd Dmg     2 E East Carondelet     38.54N 90.21W
06/30/2023                   St. Clair          IL   Public

            Report from mPING: Trees uprooted or
            snapped; Roof blown off.

1030 PM     Hail             4 N O'Fallon            38.65N 89.91W
06/30/2023  E0.70 inch       St. Clair          IL   Trained Spotter

0230 AM     Tstm Wnd Dmg     1 SSE Quincy            39.92N 91.38W
07/01/2023                   Adams              IL   Broadcast Media

            Multiple reports of trees and limbs down
            around Quincy. Time estimated from radar.

0300 AM     Tstm Wnd Gst     Paloma                  40.02N 91.20W
07/01/2023  E60 MPH          Adams              IL   Public

            Public estimated 60 mph winds.

0305 AM     Tstm Wnd Dmg     2 SSE Quincy            39.91N 91.38W
07/01/2023                   Adams              IL   Public

            Report from mPING: 3-inch tree limbs broken;
            Power poles broken.

0325 AM     Flash Flood      2 SSE Quincy            39.91N 91.38W
07/01/2023                   Adams              IL   Broadcast Media

            Parking Lot flooded at Harrison and 24th
            streets. Time estimated.

0338 AM     Tstm Wnd Dmg     1 SSE Quincy            39.92N 91.38W
07/01/2023                   Adams              IL   Public

            Report from mPING: 3-inch tree limbs broken;
            Power poles broken.

0530 AM     Rain             1 SW Quincy             39.93N 91.40W
07/01/2023  M1.96 inch       Adams              IL   Public

&&

Local storm report, Jul 1, 10:12 AM CDT, 4 hours 47 minutes before

Preliminary Local Storm Report
National Weather Service St Louis MO
1012 AM CDT Sat Jul 1 2023

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

0742 PM     Tstm Wnd Dmg     2 SW Johannisburg       38.36N 89.68W
06/30/2023                   Washington         IL   Public

            Heavily-damaged outbuildings and barns.

&&

MRB

The office that day

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

Issued	Product	Office	Counties	Lasted
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, 9:30 PM CDT	Severe Thunderstorm Warning	LSX	City of Saint Louis	45 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, 3:20 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	40 min
Jul 1, 3:32 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	43 min
Jul 1, 3:36 PM CDT	Areal Flood Advisory	LSX	Saint Charles, Saint Louis	3 hr
Jul 1, 3:54 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Sainte Genevieve, Saint Francois	51 min
Jul 1, 4:00 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve	38 min
Jul 1, 4:06 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	39 min
Jul 1, 5:16 PM CDT	Areal Flood Advisory	LSX	Saint Charles, Warren	3 hr

Nearby

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.