Alert archive / Minnesota / Flood Watches in 2024

Flood Watch 1, NWS Twin Cities, MN

May 20, 202435 counties in Minnesota; Pierce County, Polk County, Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this flood watch at May 20, 2024, 2:16 PM CDT for 35 counties in Minnesota; Pierce County, Polk County, Saint Croix County, Wisconsin. It took effect at May 21, 2024, 1:00 AM CDT. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued
May 20, 2024, 2:16 PM CDT (19:16 UTC)
In effect from
May 21, 2024, 1:00 AM CDT
Expired
May 21, 2024, 10:30 PM CDT
In force
22 hr
Issued by
NWS Twin Cities, MN
Flood severity
None
All 38 counties

Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Todd County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Pierce County, WI, Polk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 16 km from the middle of the area, began a volume at 19:18 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

Minneapolis, MN (KMPX), launched 12:00Z, 7.3 hours before the alert went out and 14 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, Minneapolis, MN at 12:00Z on 2024-05-20Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2024-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
685 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

034 
WGUS63 KMPX 201916
FFAMPX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Twin Cities/Chanhassen MN
216 PM CDT Mon May 20 2024

MNZ074>078-082>085-091>093-210330-
/O.NEW.KMPX.FA.A.0001.240521T0600Z-240522T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-Waseca-
Steele-Martin-Faribault-Freeborn-
Including the cities of New Ulm, Fairmont, Albert Lea, Faribault,
St James, Red Wing, Blue Earth, St Peter, Mankato, Owatonna,
Waseca, and Le Sueur
216 PM CDT Mon May 20 2024

...FLOOD WATCH IN EFFECT FROM 1 AM CDT TUESDAY THROUGH TUESDAY 
EVENING...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of south central and southeast Minnesota, 
  including the following counties, in south central Minnesota, Blue 
  Earth, Brown, Faribault, Freeborn, Le Sueur, Martin, Nicollet, 
  Rice, Steele, Waseca and Watonwan. In southeast Minnesota, Goodhue.

* WHEN...From 1 AM CDT Tuesday through Tuesday evening.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ043>045-049>053-058>063-066>070-WIZ014-023-024-210330-
/O.NEW.KMPX.FA.A.0001.240521T1200Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-
Chisago-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-McLeod-
Sibley-Carver-Scott-Dakota-Polk-St. Croix-Pierce-
Including the cities of Hutchinson, Hudson, Chanhassen, Little
Falls, Litchfield, Center City, Monticello, Mora, Princeton,
Blaine, Osceola, River Falls, Stillwater, Cambridge, Hastings,
Chaska, Sauk Rapids, Minneapolis, St Paul, Shakopee, Elk River,
Gaylord, Victoria, and St Cloud
216 PM CDT Mon May 20 2024

...FLOOD WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY 
NIGHT...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of Minnesota, including the following areas, 
  Anoka, Benton, Carver, Chisago, Dakota, Hennepin, Isanti, Kanabec, 
  McLeod, Meeker, Mille Lacs, Morrison, Ramsey, Scott, Sherburne, 
  Sibley, Stearns, Washington and Wright and Wisconsin, including 
  the following areas, Pierce, Polk and St. Croix.

* WHEN...From Tuesday morning through late Tuesday night.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CTG
7 follow-up statements
214 
WGUS63 KMPX 202008
FFAMPX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Twin Cities/Chanhassen MN
308 PM CDT Mon May 20 2024

MNZ073-210415-
/O.EXA.KMPX.FA.A.0001.240521T0600Z-240522T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Redwood-
Including the cities of Redwood Falls
308 PM CDT Mon May 20 2024

...FLOOD WATCH IN EFFECT FROM 1 AM CDT TUESDAY THROUGH TUESDAY 
EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...A portion of southwest Minnesota, including the following 
  county, Redwood.

* WHEN...From 1 AM CDT Tuesday through Tuesday evening.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ042-057-065-210415-
/O.EXA.KMPX.FA.A.0001.240521T1200Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Todd-Kandiyohi-Renville-
Including the cities of Willmar, Long Prairie, and Olivia
308 PM CDT Mon May 20 2024

...FLOOD WATCH IN EFFECT FROM TUESDAY MORNING THROUGH LATE TUESDAY 
NIGHT...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...A portion of central Minnesota, including the following 
  counties, Kandiyohi, Renville and Todd.

* WHEN...From Tuesday morning through late Tuesday night.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ074>078-082>085-091>093-210415-
/O.CON.KMPX.FA.A.0001.240521T0600Z-240522T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-Waseca-
Steele-Martin-Faribault-Freeborn-
Including the cities of Le Sueur, Owatonna, Fairmont, St James,
Blue Earth, Albert Lea, Faribault, Mankato, Red Wing, St Peter,
New Ulm, and Waseca
308 PM CDT Mon May 20 2024

...FLOOD WATCH REMAINS IN EFFECT FROM 1 AM CDT TUESDAY THROUGH 
TUESDAY EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of south central and southeast Minnesota, 
  including the following counties, in south central Minnesota, Blue 
  Earth, Brown, Faribault, Freeborn, Le Sueur, Martin, Nicollet, 
  Rice, Steele, Waseca and Watonwan. In southeast Minnesota, Goodhue.

* WHEN...From 1 AM CDT Tuesday through Tuesday evening.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ043>045-049>053-058>063-066>070-WIZ014-023-024-210415-
/O.CON.KMPX.FA.A.0001.240521T1200Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-
Chisago-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-McLeod-
Sibley-Carver-Scott-Dakota-Polk-St. Croix-Pierce-
Including the cities of Stillwater, St Paul, Monticello,
Hutchinson, Center City, Elk River, Gaylord, Litchfield, Little
Falls, Blaine, Chanhassen, Hudson, St Cloud, Sauk Rapids, Chaska,
River Falls, Princeton, Shakopee, Hastings, Cambridge, Osceola,
Victoria, Minneapolis, and Mora
308 PM CDT Mon May 20 2024

...FLOOD WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH LATE 
TUESDAY NIGHT...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of Minnesota, including the following areas, 
  Anoka, Benton, Carver, Chisago, Dakota, Hennepin, Isanti, Kanabec, 
  McLeod, Meeker, Mille Lacs, Morrison, Ramsey, Scott, Sherburne, 
  Sibley, Stearns, Washington and Wright and Wisconsin, including 
  the following areas, Pierce, Polk and St. Croix.

* WHEN...From Tuesday morning through late Tuesday night.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CTG
891 
WGUS63 KMPX 210521
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
1221 AM CDT Tue May 21 2024

MNZ073>078-082>085-091>093-211330-
/O.CON.KMPX.FA.A.0001.240521T0600Z-240522T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-
Including the cities of Blue Earth, Owatonna, St James, New Ulm,
St Peter, Waseca, Faribault, Fairmont, Red Wing, Le Sueur,
Redwood Falls, Albert Lea, and Mankato
1221 AM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of south central, southeast, and southwest 
  Minnesota.

* WHEN...Through this evening.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ042>045-049>053-057>063-065>070-WIZ014-023-024-211330-
/O.CON.KMPX.FA.A.0001.240521T1200Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Todd-Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-
Chisago-Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Renville-McLeod-Sibley-Carver-Scott-Dakota-Polk-St. Croix-Pierce-
Including the cities of Willmar, St Cloud, Minneapolis,
Princeton, Litchfield, River Falls, Shakopee, Chaska, Victoria,
Elk River, Little Falls, Center City, St Paul, Sauk Rapids,
Osceola, Blaine, Hutchinson, Olivia, Mora, Hudson, Cambridge,
Hastings, Chanhassen, Monticello, Stillwater, Long Prairie, and
Gaylord
1221 AM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH 
LATE TONIGHT...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of central and east central Minnesota, and west 
  central Wisconsin.

* WHEN...From 7 AM CDT this morning through late tonight.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    from early Tuesday morning through Tuesday evening. This
    activity will have a very good chance at producing heavy
    rainfall rates due to high precipitable water values and
    strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MPG
080 
WGUS63 KMPX 211350
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
850 AM CDT Tue May 21 2024

MNZ073>078-082>085-091>093-212245-
/O.CON.KMPX.FA.A.0001.000000T0000Z-240522T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-
Including the cities of Red Wing, St James, Blue Earth, Owatonna,
Mankato, Fairmont, Albert Lea, Faribault, Le Sueur, Redwood
Falls, St Peter, Waseca, and New Ulm
850 AM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of south central, southeast, and southwest 
  Minnesota, including the following counties, in south central 
  Minnesota, Blue Earth, Brown, Faribault, Freeborn, Le Sueur, 
  Martin, Nicollet, Rice, Steele, Waseca and Watonwan. In southeast 
  Minnesota, Goodhue. In southwest Minnesota, Redwood.

* WHEN...Until 7 PM CDT this evening.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    this morning through this evening. This activity will have a
    very good chance at producing heavy rainfall rates due to
    high precipitable water values and strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ042>045-049>053-057>063-065>070-WIZ014-023-024-212245-
/O.CON.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Todd-Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-
Chisago-Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Renville-McLeod-Sibley-Carver-Scott-Dakota-Polk-St. Croix-Pierce-
Including the cities of Hastings, River Falls, Willmar, Shakopee,
Sauk Rapids, Chanhassen, Princeton, Gaylord, Stillwater, Center
City, Olivia, St Cloud, Little Falls, Hutchinson, Chaska, St
Paul, Minneapolis, Monticello, Mora, Victoria, Elk River,
Cambridge, Hudson, Blaine, Litchfield, Osceola, and Long Prairie
850 AM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of Minnesota, including the following areas, 
  Anoka, Benton, Carver, Chisago, Dakota, Hennepin, Isanti, Kanabec, 
  Kandiyohi, McLeod, Meeker, Mille Lacs, Morrison, Ramsey, Renville, 
  Scott, Sherburne, Sibley, Stearns, Todd, Washington and Wright and 
  Wisconsin, including the following areas, Pierce, Polk and St. 
  Croix.

* WHEN...Through late tonight.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - Multiple rounds of showers and thunderstorms should occur
    this morning through this evening. This activity will have a
    very good chance at producing heavy rainfall rates due to
    high precipitable water values and strong lifting mechanisms.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

Dye
332 
WGUS63 KMPX 212256
FFAMPX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Twin Cities/Chanhassen MN
556 PM CDT Tue May 21 2024

.Thunderstorms with heavy rain will continue over portions of the 
area through this evening, focused more on central and eastern 
Minnesota.

MNZ042-049-057-065-220000-
/O.CAN.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Todd-Stearns-Kandiyohi-Renville-
Including the cities of Olivia, St Cloud, Willmar, and Long
Prairie
556 PM CDT Tue May 21 2024

...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch is cancelled for a portion of central 
Minnesota, including the following areas, Kandiyohi, Renville, 
Stearns and Todd.

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

$$

MNZ073-074-220000-
/O.CAN.KMPX.FA.A.0001.000000T0000Z-240522T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Redwood-Brown-
Including the cities of Redwood Falls and New Ulm
556 PM CDT Tue May 21 2024

...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch is cancelled for portions of south central and 
southwest Minnesota, including the following areas, in south central 
Minnesota, Brown. In southwest Minnesota, Redwood.

The flash flooding threat has ended. Therefore, the Flash Flood 
Watch is being cancelled.

$$

MNZ075>078-082>085-091>093-220300-
/O.EXT.KMPX.FA.A.0001.000000T0000Z-240522T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-Waseca-Steele-
Martin-Faribault-Freeborn-
Including the cities of Faribault, Waseca, Blue Earth, St James,
Le Sueur, Red Wing, St Peter, Mankato, Albert Lea, Fairmont, and
Owatonna
556 PM CDT Tue May 21 2024

...FLOOD WATCH NOW IN EFFECT UNTIL 10 PM CDT THIS EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of south central and southeast Minnesota, 
  including the following counties, in south central Minnesota, Blue 
  Earth, Faribault, Freeborn, Le Sueur, Martin, Nicollet, Rice, 
  Steele, Waseca and Watonwan. In southeast Minnesota, Goodhue.

* WHEN...Until 10 PM CDT this evening.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ043>045-050>053-058>063-066>070-WIZ014-023-024-220600-
/O.CON.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morrison-Mille Lacs-Kanabec-Benton-Sherburne-Isanti-Chisago-
Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-McLeod-Sibley-
Carver-Scott-Dakota-Polk-St. Croix-Pierce-
Including the cities of Chaska, River Falls, Litchfield, Gaylord,
Monticello, Victoria, Minneapolis, Chanhassen, St Paul,
Cambridge, Shakopee, Osceola, Hutchinson, Center City, Elk River,
Princeton, Hastings, Sauk Rapids, Hudson, Blaine, Little Falls,
Stillwater, and Mora
556 PM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of Minnesota, including the following areas, 
  Anoka, Benton, Carver, Chisago, Dakota, Hennepin, Isanti, Kanabec, 
  McLeod, Meeker, Mille Lacs, Morrison, Ramsey, Scott, Sherburne, 
  Sibley, Washington and Wright and Wisconsin, including the 
  following areas, Pierce, Polk and St. Croix.

* WHEN...Until 1 AM CDT Wednesday.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CCS
087 
WGUS63 KMPX 220044
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
744 PM CDT Tue May 21 2024

.The western portions of the Flood Watch are expiring as rain 
continues to move eastwards over the next few hours. The areas most 
susceptible to flooding continue to be where heavy rain fell earlier 
this evening, mainly the southeastern to eastern Twin Cities metro, 
greater Mankato area, and portions of Goodhue County.

MNZ058-066-067-220145-
/O.CAN.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Meeker-McLeod-Sibley-
Including the cities of Hutchinson, Gaylord, and Litchfield
744 PM CDT Tue May 21 2024

...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch is cancelled for a portion of central 
Minnesota, including the following areas, McLeod, Meeker and Sibley.

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

$$

MNZ075-082-091>093-220145-
/O.CAN.KMPX.FA.A.0001.000000T0000Z-240522T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Nicollet-Watonwan-Martin-Faribault-Freeborn-
Including the cities of Fairmont, St Peter, Albert Lea, Blue
Earth, and St James
744 PM CDT Tue May 21 2024

...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch is cancelled for a portion of south central 
Minnesota, including the following areas, Faribault, Freeborn, 
Martin, Nicollet and Watonwan.

The flash flooding threat has ended. Therefore, the Flash Flood 
Watch is being cancelled.

$$

MNZ076>078-083>085-220300-
/O.CON.KMPX.FA.A.0001.000000T0000Z-240522T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Le Sueur-Rice-Goodhue-Blue Earth-Waseca-Steele-
Including the cities of Red Wing, Mankato, Faribault, Owatonna,
Le Sueur, and Waseca
744 PM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of south central and southeast Minnesota, 
  including the following counties, in south central Minnesota, Blue 
  Earth, Le Sueur, Rice, Steele and Waseca. In southeast Minnesota, 
  Goodhue.

* WHEN...Until 10 PM CDT this evening.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

MNZ043>045-050>053-059>063-068>070-WIZ014-023-024-220600-
/O.CON.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morrison-Mille Lacs-Kanabec-Benton-Sherburne-Isanti-Chisago-
Wright-Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota-Polk-
St. Croix-Pierce-
Including the cities of Monticello, Elk River, Chaska, Sauk
Rapids, Little Falls, Mora, Hudson, Princeton, Osceola,
Stillwater, Shakopee, Center City, River Falls, Minneapolis,
Chanhassen, Cambridge, Blaine, Victoria, St Paul, and Hastings
744 PM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of Minnesota, including the following areas, 
  Anoka, Benton, Carver, Chisago, Dakota, Hennepin, Isanti, Kanabec, 
  Mille Lacs, Morrison, Ramsey, Scott, Sherburne, Washington and 
  Wright and Wisconsin, including the following areas, Pierce, Polk 
  and St. Croix.

* WHEN...Until 1 AM CDT Wednesday.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

TDH
841 
WGUS63 KMPX 220257
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
957 PM CDT Tue May 21 2024

.The last of the rain for tonight is rotating through now, and will 
exit the area within the next couple hours. Any lingering localized 
flooding should begin to recede rapidly once rainfall ends.

MNZ043>045-050-051-059-060-068-069-220400-
/O.CAN.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morrison-Mille Lacs-Kanabec-Benton-Sherburne-Wright-Hennepin-
Carver-Scott-
Including the cities of Minneapolis, Chanhassen, Victoria,
Monticello, Elk River, Shakopee, Chaska, Sauk Rapids, Little
Falls, Mora, and Princeton
957 PM CDT Tue May 21 2024

...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch is cancelled for portions of central and east 
central Minnesota, including the following areas, in central 
Minnesota, Benton, Morrison, Sherburne and Wright. In east central 
Minnesota, Carver, Hennepin, Kanabec, Mille Lacs and Scott.

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

$$

MNZ076>078-083>085-220400-
/O.EXP.KMPX.FA.A.0001.000000T0000Z-240522T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Le Sueur-Rice-Goodhue-Blue Earth-Waseca-Steele-
Including the cities of Red Wing, Mankato, Faribault, Owatonna,
Le Sueur, and Waseca
957 PM CDT Tue May 21 2024

...FLOOD WATCH WILL EXPIRE AT 10 PM CDT THIS EVENING...

The Flash Flood Watch will expire for portions of south central and 
southeast Minnesota, including the following areas, in south central 
Minnesota, Blue Earth, Le Sueur, Rice, Steele and Waseca. In 
southeast Minnesota, Goodhue.

The flash flooding threat has ended. Therefore, the Flash Flood 
Watch will expire at 10 PM CDT this evening.

$$

MNZ052-053-061>063-070-WIZ014-023-024-220600-
/O.CON.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Isanti-Chisago-Anoka-Ramsey-Washington-Dakota-Polk-St. Croix-
Pierce-
Including the cities of Center City, River Falls, St Paul,
Cambridge, Hudson, Blaine, Osceola, Hastings, and Stillwater
957 PM CDT Tue May 21 2024

...FLOOD WATCH REMAINS IN EFFECT UNTIL 1 AM CDT WEDNESDAY...

* WHAT...Flash flooding caused by excessive rainfall continues to be 
  possible.

* WHERE...Portions of east central Minnesota, including the 
  following areas, Anoka, Chisago, Dakota, Isanti, Ramsey and 
  Washington and Wisconsin, including the following areas, Pierce, 
  Polk and St. Croix.

* WHEN...Until 1 AM CDT Wednesday.

* IMPACTS...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.

* ADDITIONAL DETAILS...
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

TDH
138 
WGUS63 KMPX 220330
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
1030 PM CDT Tue May 21 2024

MNZ052-053-061>063-070-WIZ014-023-024-220430-
/O.CAN.KMPX.FA.A.0001.000000T0000Z-240522T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Isanti-Chisago-Anoka-Ramsey-Washington-Dakota-Polk-St. Croix-
Pierce-
Including the cities of Center City, River Falls, St Paul,
Cambridge, Hudson, Blaine, Osceola, Hastings, and Stillwater
1030 PM CDT Tue May 21 2024

...FLOOD WATCH IS CANCELLED...

The Flash Flood Watch is cancelled for portions of east central 
Minnesota, including the following areas, Anoka, Chisago, Dakota, 
Isanti, Ramsey and Washington and Wisconsin, including the following 
areas, Pierce, Polk and St. Croix.

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

$$

TDH

What forecasters said that day

The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this flood watch went out at May 20, 12:46 PM CDT, 1 hour 30 minutes earlier. Its key messages:

  • Slight potential for strong to severe storms across southern Minnesota this afternoon.
  • Increasing likelihood of strong to severe thunderstorms Tuesday PM across southern Minnesota and western Wisconsin. SPC day 2 SWO brings an Enhanced Risk (3 out of 5) into SE MN.
  • Heavy rainfall is likely and totals may exceed 3 inches through mid-week. This will likely lead to rises on rivers and their tributaries into the holiday weekend.
Area forecast discussion, May 20, 12:46 PM CDT, 1 hour 30 minutes before
Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
1246 PM CDT Mon May 20 2024

.KEY MESSAGES...

- Slight potential for strong to severe storms across southern
Minnesota this afternoon.

- Increasing likelihood of strong to severe thunderstorms Tuesday PM
across southern Minnesota and western Wisconsin. SPC day 2 SWO
brings an Enhanced Risk (3 out of 5) into SE MN.

- Heavy rainfall is likely and totals may exceed 3 inches through
mid-week. This will likely lead to rises on rivers and their
tributaries into the holiday weekend.

&&

.DISCUSSION...
Issued at 322 AM CDT Mon May 20 2024

Currently a mid-level low spins over the Dakotas and is forecast to
prog east over MN/WI today. Convection has already begun initiating
ahead of a warm front that extends from west-central MN over to Eau
Claire, WI. Severe weather is not expected with this initial band of
storms however, some of the stronger storms could produce pea size
hail and brief gusty winds. Broader forcing associated with a cold
front currently resides over Western MN where mainly showers and
embedded thunder exists. This band of precip will spread over
central and southern MN early this morning and begin to clear from
west to east just after sunrise. There will be a few hours and some
partial clearing to the skies later this morning into the early
afternoon with highs into the mid-70s. The aforementioned boundary
that brought the early morning precip, will become stationary as a
trough over the inter-mountain west begins to become negatively
tilted. This will force a potential MCS to develop over SE Nebraska,
and SW Iowa. Its expected that system will lose its support and
become disorganized. With that said however, another afternoon of
convection does look possible. Forecast soundings showing an
environment that features 0-6km shear nearing 30kts and elevated
1500 J/kg of MUCAPE thus allowing for the potential for gusty winds
and large hail which aligns with the SPC's slight risk (level 2 of
5) across southern MN. Although given the questionable forcing
mechanisms, kept only slight mention of PoPs in the grids for now.
Rainfall amounts through today will range between a tenth to a half
inch, with locally higher amounts associated with stronger cells.

By Tuesday into Wednesday, the trough over the intermountain west
will eject a Colorado low towards the northern plains and
intensifies by the time it reaches MN/WI. Like with previous
discussions, the MSLP for this low pressure is forecast to reach
climatological minimums per the ensemble situational awareness table
and the return interval for a system of this caliber for late May
comes about once per decade. A defined gradient in temperatures will
exist from Duluth, MN down to Sioux Falls, SD. Areas north and west
of this gradient will struggle to reach 60 degrees whereas mid 60s
to low 70s to the south and east. As this low pressure progs
through, widespread rain and thunderstorms will occur. The
kinematics for convection do look favorable for more severe storms
Tuesday afternoon which is highlighted in the SPC Day 2 Outlook for
southeastern MN under an enhanced risk (level 3 of 5). A slight risk
for severe storms is forecasted north and west including the Twin
Cities as there are uncertainties with northward progress of the
system's warm sector. Primary hazards will be a few tornadoes based
on forecasted hodographs, gusty winds, and large hail. NBM QPF
totals still holding high confidence that much MN and western WI
could see at least 1 to potentially 3 inches of rainfall through
Wednesday night. Wednesday also looks to be the coolest day of the
week with highs in the mid 60s and lows in the 40s.

Thursday features a lull in the precipitation as a brief ridge of
high pressure progresses overhead. Temperatures will return to the
70s and lows in the 50s. Some more rainfall tries to sneak back in
on Friday and again on late Sunday as another series of shortwaves
develop and make their way east across the Northern CONUS.

&&

.AVIATION /18Z TAFS THROUGH 18Z TUESDAY/...
Issued at 1224 PM CDT Mon May 20 2024

A busy stretch of weather is expected through this forecast
period. MVFR/IFR cigs have been slow to move out through early
this afternoon, despite guidance saying otherwise. Decided to
keep things on the pessimistic side because of this. MVFR/IFR
conditions are expected through the majority of the period once
showers and thunderstorms move through late this evening into
Tuesday afternoon and beyond. Timing still remains the tricky
part of the forecast with hi-res guidance all over the place for
a round of showers and storms before 06z for our southern sites.
Most agree that all will see rain with embedded storms from 12z
through the end of the period. Wind gusts may be underdone by
Tuesday morning, but will wait until later forecasts to adjust.

KMSP...The TAF is long and ugly to say the least. Based on ob
trends, kept MVFR cigs through mid afternoon. While we have
plenty of instability building this afternoon, we are lacking
any sort of lift to initiate thunderstorms until the LLJ kicks
in later tonight. Thinking there will be a break between the
first and second round of storms overnight with chances once
again increasing just before sunrise. A lot of uncertainty
surrounds the midday Tuesday timeframe, but yet another round of
storms is expected during the afternoon. These storms may be
strong to severe with heavy rain and possible LIFR conditions
into the evening. However, confidence is too low to include that
in the TAF at this point.

/OUTLOOK FOR KMSP/
WED...MVFR bcmg VFR. Chc -SHRA. Wind W 15G25kts.
THU...VFR. Wind W 10 kts.
FRI...VFR/MVFR chc -SHRA. Wind SE 10-15kts.

&&

.HYDROLOGY...
Issued at 655 AM CDT Sun May 19 2024

A heavy rain event remains on track for Tuesday, with a large
footprint of 1 to 3 inches of rain, with some locations pushing
4 inches. The greatest rainfall totals are expected across
southwest, west central, and central MN. Exactly where and how
much rainfall we see will determine where a threat for river
flooding will exist going into Memorial Day weekend, but given
current rainfall forecasts, flooding during the holiday weekend
may be possible in the Cottonwood, Redwood, Minnesota (upstream
of Mankato), and Crow river basins.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...None.
WI...None.

&&

DISCUSSION...Dunleavy
AVIATION...Dye
HYDROLOGY...MPG
Hazardous weather outlook, May 20, 5:23 AM CDT, 8 hours 53 minutes before
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
523 AM CDT Mon May 20 2024

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
211030-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
523 AM CDT Mon May 20 2024

This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.

.DAY ONE...Today and Tonight.

Scattered severe thunderstorms capable of producing large hail and
damaging wind gusts will be possible the evening and overnight.
The greatest risk for severe weather will be in south central
Minnesota.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

A powerful storm system will bring another round of thunderstorms
Tuesday afternoon and evening. There is an Enhanced Risk of
severe thunderstorms (level 3 of 5) across southeastern Minnesota
into west central Wisconsin, and a Slight Risk (level 2 of 5)
extending across south central and east central Minnesota into
western Wisconsin. Large hail and damaging winds are the main
threats, but a few tornadoes are also possible.

Heavy rainfall is likely Tuesday afternoon and evening and totals
may exceed 2 or 3 inches. This will lead to rises on rivers and
their tributaries through the end of the week.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed this evening in southern
Minnesota.

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 20, 2:00 PM CDTWind AdvisoryMPXChippewa, Douglas, Lac qui Parle, Pope, Redwood, Stevens and 2 more33 hr
May 20, 6:53 PM CDTSpecial Weather StatementMPXFreeborn37 min

Nearby

Flood Watches in Minnesota, 2024Flood Watches in Wisconsin, 2024Every flood watch in 2024

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.