Alert archive / Missouri / Flash Flood Watches in 2021

Flash Flood Watch 3, NWS St. Louis, MO

June 23, 202121 counties in Missouri; 9 counties in Illinois

NWS St. Louis, MO issued this flash flood watch at Jun 23, 2021, 2:00 PM CDT for 21 counties in Missouri; 9 counties in Illinois. It took effect at Jun 24, 2021, 4:00 PM CDT. It was in force for 52 hr.

The area

The counties it named.

The facts

Issued
Jun 23, 2021, 2:00 PM CDT (19:00 UTC)
In effect from
Jun 24, 2021, 4:00 PM CDT
Expired
Jun 26, 2021, 7:42 PM CDT
In force
52 hr
Issued by
NWS St. Louis, MO
Flood severity
None
All 30 counties

Adams County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Montgomery County, IL, Pike County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Franklin County, MO, Gasconade County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Shelby County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 69 km from the middle of the area, began a volume at 19:04 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.0 hours before the alert went out and 248 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-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2021-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2021-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1729 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
150 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

234 
WGUS63 KLSX 231900
FFALSX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service St Louis MO
200 PM CDT Wed Jun 23 2021

ILZ095-MOZ018-019-026-027-034>036-041-042-047>052-059-060-241000-
/O.NEW.KLSX.FF.A.0003.210624T2100Z-210625T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams 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-
Including the cities of Columbia, Quincy, Mexico, Bowling Green,
Jefferson City, Hannibal, and Fulton
200 PM CDT Wed Jun 23 2021

...FLASH FLOOD WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH 
FRIDAY MORNING...

The National Weather Service in St Louis has issued a

* Flash Flood Watch for Portions of west central Illinois, including 
  the following area, Adams IL. Portions of Missouri, including the 
  following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, 
  Gasconade MO, Knox MO, Lewis MO, Lincoln MO, Marion MO, Moniteau 
  MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, Ralls MO, Shelby 
  MO and Warren MO.

* From Thursday afternoon through Friday morning.

* Several rounds of thunderstorms are expected Thursday afternoon 
  through Friday morning. The heavy rainfall from these storms has 
  the potential to cause flash flooding.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.
  Low-water crossings may be flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

MRB
9 follow-up statements
537 
WGUS63 KLSX 240831
FFALSX

Flood Watch
National Weather Service St Louis MO
331 AM CDT Thu Jun 24 2021

ILZ095-MOZ018-019-026-027-034>036-041-042-047>052-059-060-242345-
/O.CON.KLSX.FF.A.0003.210624T2100Z-210625T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams 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-
Including the cities of Columbia, Quincy, Mexico, Bowling Green,
Jefferson City, Hannibal, and Fulton
331 AM CDT Thu Jun 24 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH 
FRIDAY MORNING...

The Flash Flood Watch continues for

* Portions of west central Illinois, including the following area, 
  Adams IL. Portions of Missouri, including the following areas, 
  Audrain MO, Boone MO, Callaway MO, Cole MO, Gasconade MO, Knox MO, 
  Lewis MO, Lincoln MO, Marion MO, Moniteau MO, Monroe MO, 
  Montgomery MO, Osage MO, Pike MO, Ralls MO, Shelby MO and Warren 
  MO.

* From this afternoon through Friday morning.

* Several rounds of thunderstorms are expected today through Friday 
  morning.  Flash flooding will be possible as storms producing 
  heavy rainfall move repeatedly over the same location.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.  Flooding 
  may occur in poor drainage and urban areas.  Low-water crossings 
  may be flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Britt
559 
WGUS63 KLSX 241820
FFALSX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service St Louis MO
120 PM CDT Thu Jun 24 2021

ILZ058>060-096>100-MOZ061>064-250930-
/O.EXB.KLSX.FF.A.0003.210624T2100Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Brown IL-Pike IL-Calhoun IL-
Jersey IL-Madison IL-Saint Charles MO-Franklin MO-Saint Louis MO-
Saint Louis City MO-
Including the cities of Mount Sterling, Pittsfield, Saint
Charles, Alton, Litchfield, Washington, Saint Louis, Union,
Edwardsville, and Sullivan
120 PM CDT Thu Jun 24 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH SATURDAY MORNING...

The National Weather Service in St Louis has expanded the

* Flash Flood Watch to include Portions of Illinois, including the 
  following areas, Brown IL, Calhoun IL, Greene IL, Jersey IL, 
  Macoupin IL, Madison IL, Montgomery IL and Pike IL. Portions of 
  east central Missouri, including the following areas, Franklin MO, 
  Saint Charles MO, Saint Louis City MO and Saint Louis MO.

* Through Saturday morning.

* Several rounds of thunderstorms are expected today through Friday 
  morning.  Flash flooding will be possible as storms producing 
  heavy rainfall move repeatedly over the same location.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

ILZ095-MOZ018-019-026-027-034>036-041-042-047>052-059-060-250930-
/O.EXT.KLSX.FF.A.0003.210624T2100Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Adams 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-
Including the cities of Columbia, Quincy, Mexico, Bowling Green,
Jefferson City, Hannibal, and Fulton
120 PM CDT Thu Jun 24 2021

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH SATURDAY MORNING...

The Flash Flood Watch is now in effect for

* Portions of west central Illinois, including the following area, 
  Adams IL. Portions of Missouri, including the following areas, 
  Audrain MO, Boone MO, Callaway MO, Cole MO, Gasconade MO, Knox MO, 
  Lewis MO, Lincoln MO, Marion MO, Moniteau MO, Monroe MO, 
  Montgomery MO, Osage MO, Pike MO, Ralls MO, Shelby MO and Warren 
  MO.

* Through Saturday morning.

* Several rounds of thunderstorms are expected today through Friday 
  morning.  Flash flooding will be possible as storms producing 
  heavy rainfall move repeatedly over the same location.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.
  Low-water crossings may be flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Gosselin
157 
WGUS63 KLSX 250215
FFALSX

Flood Watch
National Weather Service St Louis MO
915 PM CDT Thu Jun 24 2021

ILZ058>060-095>100-MOZ018-019-026-027-034>036-041-042-047>052-
059>064-251200-
/O.CON.KLSX.FF.A.0003.000000T0000Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison 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-
Including the cities of Mount Sterling, Columbia, Quincy,
Pittsfield, Alton, Litchfield, Washington, Mexico, Bowling Green,
Saint Louis, Jefferson City, Edwardsville, Union, Saint Charles,
Sullivan, Hannibal, and Fulton
915 PM CDT Thu Jun 24 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of Illinois, including the following areas, Adams IL, 
  Brown IL, Calhoun IL, Greene IL, Jersey IL, Macoupin IL, Madison 
  IL, Montgomery IL and Pike IL. Portions of Missouri, including the 
  following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, 
  Franklin MO, Gasconade MO, Knox MO, Lewis MO, Lincoln MO, Marion 
  MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, 
  Ralls MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, 
  Shelby MO and Warren MO.

* Through Saturday morning.

* Several rounds of thunderstorms are expected today through Friday 
  morning.  Flash flooding will be possible as storms producing 
  heavy rainfall move repeatedly over the same location.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.  Flooding 
  may occur in poor drainage and urban areas.  Low-water crossings 
  may be flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Carney
722 
WGUS63 KLSX 250923
FFALSX

Flood Watch
National Weather Service St Louis MO
423 AM CDT Fri Jun 25 2021

ILZ058>060-095>100-MOZ018-019-026-027-034>036-041-042-047>052-
059>064-260030-
/O.CON.KLSX.FF.A.0003.000000T0000Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison 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-
Including the cities of Mount Sterling, Columbia, Quincy,
Pittsfield, Alton, Litchfield, Washington, Mexico, Bowling Green,
Saint Louis, Jefferson City, Edwardsville, Union, Saint Charles,
Sullivan, Hannibal, and Fulton
423 AM CDT Fri Jun 25 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of Illinois, including the following areas, Adams IL, 
  Brown IL, Calhoun IL, Greene IL, Jersey IL, Macoupin IL, Madison 
  IL, Montgomery IL and Pike IL. Portions of Missouri, including the 
  following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, 
  Franklin MO, Gasconade MO, Knox MO, Lewis MO, Lincoln MO, Marion 
  MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, 
  Ralls MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, 
  Shelby MO and Warren MO.

* Through Saturday morning.

* Several rounds of thunderstorms containing heavy rainfall are 
  expected today and tonight.  Flash flooding will be possible as 
  storms producing heavy rainfall move repeatedly over the same 
  location.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.  Flooding 
  may occur in poor drainage and urban areas.  Low-water crossings 
  may be flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

GKS
755 
WGUS63 KLSX 251927
FFALSX

Flood Watch
National Weather Service St Louis MO
227 PM CDT Fri Jun 25 2021

ILZ058>060-095>100-MOZ018-019-026-027-034>036-041-042-047>052-
059>064-261130-
/O.CON.KLSX.FF.A.0003.000000T0000Z-210626T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison 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-
Including the cities of Mount Sterling, Columbia, Quincy,
Pittsfield, Alton, Litchfield, Washington, Mexico, Bowling Green,
Saint Louis, Jefferson City, Edwardsville, Union, Saint Charles,
Sullivan, Hannibal, and Fulton
227 PM CDT Fri Jun 25 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SATURDAY MORNING...

The Flash Flood Watch continues for

* Portions of Illinois, including the following areas, Adams IL, 
  Brown IL, Calhoun IL, Greene IL, Jersey IL, Macoupin IL, Madison 
  IL, Montgomery IL and Pike IL. Portions of Missouri, including the 
  following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, 
  Franklin MO, Gasconade MO, Knox MO, Lewis MO, Lincoln MO, Marion 
  MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, 
  Ralls MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, 
  Shelby MO and Warren MO.

* Through Saturday morning.

* Additional thunderstorms containing heavy rainfall are expected 
  through tonight.  Flash flooding will be possible as storms 
  producing heavy rainfall move repeatedly over the same location.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.
  Low-water crossings may be flooded.
  Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.
  Low-water crossings may be flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Gosselin
024 
WGUS63 KLSX 260312
FFALSX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Saint Louis MO
1012 PM CDT Fri Jun 25 2021


ILZ058>060-095>100-MOZ018-019-026-027-034>036-041-042-047>052-
059>064-261515-
/O.EXT.KLSX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison 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-
Including the cities of Litchfield, Quincy, Mount Sterling, 
Pittsfield, Alton, Edwardsville, Hannibal, Bowling Green, 
Columbia, Mexico, Jefferson City, Fulton, Saint Charles, 
Washington, Union, Sullivan, and Saint Louis
1012 PM CDT Fri Jun 25 2021

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH SUNDAY MORNING...

The Flash Flood Watch is now in effect for

* portions of Illinois and Missouri...including the following 
  counties...in Illinois...Adams IL...Brown IL...Calhoun IL... 
  Greene IL...Jersey IL...Macoupin IL...Madison IL...Montgomery 
  IL and Pike IL. In Missouri...Audrain MO...Boone MO...Callaway 
  MO...Cole MO...Franklin MO...Gasconade MO...Knox MO...Lewis 
  MO...Lincoln MO...Marion MO...Moniteau MO...Monroe MO... 
  Montgomery MO...Osage MO...Pike MO...Ralls MO...Saint Charles 
  MO...Saint Louis City MO...Saint Louis MO...Shelby MO and 
  Warren MO. 

* through Sunday morning

* Additional thunderstorms containing heavy rainfall are expected
  through Sunday morning. Flash flooding will be possible as
  storms producing heavy rainfall move repeatedly over the same
  location. 

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations. 
  Flooding may occur in poor drainage and urban areas. Low- 
  water crossings may be flooded. Excessive runoff may result in 
  flooding of rivers, creeks, streams, and other low-lying and 
  flood-prone locations. Flooding may occur in poor drainage and 
  urban areas. Low-water crossings may be flooded. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

Byrd
731 
WGUS63 KLSX 260828
FFALSX

Flood Watch
National Weather Service St Louis MO
328 AM CDT Sat Jun 26 2021

ILZ058>060-095>100-MOZ018-019-026-027-034>036-041-042-047>052-
059>064-262330-
/O.CON.KLSX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison 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-
Including the cities of Mount Sterling, Columbia, Quincy,
Pittsfield, Alton, Litchfield, Washington, Mexico, Bowling Green,
Saint Louis, Jefferson City, Edwardsville, Union, Saint Charles,
Sullivan, Hannibal, and Fulton
328 AM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY MORNING...

The Flash Flood Watch continues for

* Portions of Illinois, including the following areas, Adams IL, 
  Brown IL, Calhoun IL, Greene IL, Jersey IL, Macoupin IL, Madison 
  IL, Montgomery IL and Pike IL. Portions of Missouri, including the 
  following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, 
  Franklin MO, Gasconade MO, Knox MO, Lewis MO, Lincoln MO, Marion 
  MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, 
  Ralls MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, 
  Shelby MO and Warren MO.

* Through Sunday morning.

* Additional thunderstorms containing heavy rainfall are expected 
  today and tonight.  Flash flooding will be possible as storms 
  producing heavy rainfall move repeatedly over the same location.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.
  Low-water crossings may be flooded.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

GKS
403 
WGUS63 KLSX 262031
FFALSX

Flood Watch
National Weather Service St Louis MO
331 PM CDT Sat Jun 26 2021

ILZ058>060-095>100-MOZ018-019-026-027-034>036-041-042-047>052-
059>064-271200-
/O.CON.KLSX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison 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-
Including the cities of Mount Sterling, Columbia, Quincy,
Pittsfield, Alton, Litchfield, Washington, Mexico, Bowling Green,
Saint Louis, Jefferson City, Edwardsville, Union, Saint Charles,
Sullivan, Hannibal, and Fulton
331 PM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY MORNING...

The Flash Flood Watch continues for

* Portions of Illinois, including the following areas, Adams IL, 
  Brown IL, Calhoun IL, Greene IL, Jersey IL, Macoupin IL, Madison 
  IL, Montgomery IL and Pike IL. Portions of Missouri, including the 
  following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, 
  Franklin MO, Gasconade MO, Knox MO, Lewis MO, Lincoln MO, Marion 
  MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, 
  Ralls MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, 
  Shelby MO and Warren MO.

* Through Sunday morning.

* Additional thunderstorms producing heavy rainfall are expected 
  through tonight. Localized flash flooding will be most likely 
  where thunderstorms occur over similar locations and over already 
  saturated soils.

* Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.
  Low-water crossings may be flooded.
  Excessive runoff may result in flooding of rivers, creeks, 
  streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.
  Low-water crossings may be flooded.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Pfahler
693 
WGUS63 KLSX 270042
FFALSX

Flood Watch
National Weather Service St Louis MO
742 PM CDT Sat Jun 26 2021

ILZ058>060-095>100-MOZ018-019-026-027-034>036-041-042-047>052-
059>064-270145-
/O.CAN.KLSX.FF.A.0003.000000T0000Z-210627T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Greene IL-Macoupin IL-Montgomery IL-Adams IL-Brown IL-Pike IL-
Calhoun IL-Jersey IL-Madison 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-
Including the cities of Mount Sterling, Columbia, Quincy,
Pittsfield, Alton, Litchfield, Washington, Mexico, Bowling Green,
Saint Louis, Jefferson City, Edwardsville, Union, Saint Charles,
Sullivan, Hannibal, and Fulton
742 PM CDT Sat Jun 26 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for Portions of Illinois, including the 
following areas, Adams IL, Brown IL, Calhoun IL, Greene IL, Jersey 
IL, Macoupin IL, Madison IL, Montgomery IL and Pike IL. Portions of 
Missouri, including the following areas, Audrain MO, Boone MO, 
Callaway MO, Cole MO, Franklin MO, Gasconade MO, Knox MO, Lewis MO, 
Lincoln MO, Marion MO, Moniteau MO, Monroe MO, Montgomery MO, Osage 
MO, Pike MO, Ralls MO, Saint Charles MO, Saint Louis City MO, Saint 
Louis MO, Shelby MO and Warren MO. has been cancelled.

The Flood Watch is cancelled. Flash flooding is no longer expected 
to pose a threat tonight. Please continue to heed remaining road 
closures.

$$

CVKING

Nearby

Flash Flood Watches in Missouri, 2021Flash Flood Watches in Illinois, 2021Every flash flood watch in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.