Alert archive / Minnesota / Flash Flood Warnings in 2025

Flash Flood Warning 4, NWS Twin Cities, MN

July 18, 2025Redwood County, Minnesota

NWS Twin Cities, MN issued this flash flood warning at Jul 18, 2025, 10:48 PM CDT for Redwood County, Minnesota. It was in force for 87 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 18, 2025, 10:48 PM CDT (03:48 UTC)
Expired
Jul 19, 2025, 12:15 AM CDT
In force
87 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Flood severity
None

County Redwood County, MN

The radar

The Sioux Falls radar (KFSD), 127 km from the middle of the area, began a volume at 03:49 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 00:00Z, 3.8 hours before the alert went out and 163 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 00:00Z on 2025-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLLFCEL10008507005003002001001 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, Minneapolis, MN at 00:00Z on 2025-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 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
12 J/kg
Mixed-layer CIN
-337 J/kg
Mixed-layer LCL
936 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
192 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

296 
WGUS53 KMPX 190348
FFWMPX
MNC127-190515-
/O.NEW.KMPX.FF.W.0004.250719T0348Z-250719T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
1048 PM CDT Fri Jul 18 2025

The National Weather Service in the Twin Cities has issued a

* Flash Flood Warning for...
  Southwestern Redwood County in southwestern Minnesota...

* Until 1215 AM CDT.

* At 1048 PM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain across the warned area. Between 
  2 and 3.5 inches of rain have fallen. Additional rainfall amounts 
  of 1 to 2 inches are possible in the warned area. Flash flooding 
  is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Mainly rural areas of Southwestern Redwood County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4435 9558 4431 9559 4425 9544 4428 9540
      4431 9544 4435 9550 4436 9556 4435 9557

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

TDH
1 follow-up statement
734 
WGUS73 KMPX 190516
FFSMPX

Flash Flood Statement
National Weather Service Twin Cities/Chanhassen MN
1216 AM CDT Sat Jul 19 2025

MNC127-190526-
/O.EXP.KMPX.FF.W.0004.000000T0000Z-250719T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Redwood MN-
1216 AM CDT Sat Jul 19 2025

...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHWESTERN REDWOOD COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

&&

LAT...LON 4435 9558 4431 9559 4425 9544 4428 9540
      4431 9544 4435 9550 4436 9556 4435 9557

$$

TDH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 7:28 PM CDTSevere Thunderstorm WarningMPXChippewa, Renville, Yellow Medicine30 min
Jul 18, 7:43 PM CDTTornado WarningMPXRedwood, Renville, Yellow Medicine35 min
Jul 18, 7:51 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi25 min
Jul 18, 8:12 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville33 min
Jul 18, 9:01 PM CDTSevere Thunderstorm WarningMPXSherburne, Stearns10 min
Jul 18, 9:11 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns, Wright34 min
Jul 18, 9:50 PM CDTSpecial Weather StatementMPXRedwood55 min
Jul 18, 10:03 PM CDTSevere Thunderstorm WarningMPXRedwood42 min
Jul 18, 10:34 PM CDTTornado WarningMPXRedwood11 min
Jul 18, 11:55 PM CDTSpecial Weather StatementMPXMartin, Watonwan65 min
Jul 19, 12:18 AM CDTSpecial Weather StatementMPXBlue Earth57 min
Jul 19, 1:00 AM CDTSpecial Weather StatementMPXWatonwan60 min
Jul 19, 1:25 AM CDTSevere Thunderstorm WarningMPXFaribault, Martin35 min
Jul 19, 2:00 AM CDTSpecial Weather StatementMPXFaribault30 min

Nearby

Flash Flood Warnings in Minnesota, 2025Every flash flood warning in 2025

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.