Alert archive / Minnesota / Flash Flood Warnings in 2024
Flash Flood Warning 8, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Jun 24, 2024, 10:34 AM CDT for Blue Earth County, Minnesota. It was in force for 24 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2024, 10:34 AM CDT (15:34 UTC)
- Expired
- Jun 25, 2024, 10:30 AM CDT
- In force
- 24 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- Unknown
County Blue Earth County, MN
The radar
The Minneapolis radar (KMPX), 92 km from the middle of the area, began a volume at 15:37 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, 3.6 hours before the alert went out and 91 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1455 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 305 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
133
WGUS53 KMPX 241534
FFWMPX
MNC013-242130-
/O.NEW.KMPX.FF.W.0008.240624T1534Z-240624T2130Z/
/00000.U.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
1034 AM CDT Mon Jun 24 2024
The National Weather Service in the Twin Cities has issued a
* Flash Flood Warning for...
A Dam Break on the Blue Earth River below Rapidan Dam in...
Central Blue Earth County in south central Minnesota...
* Until 430 PM CDT.
* At 1034 AM CDT, dam operators reported the river has eroded earth
around the dam and is uncontrolled. This may result in flash
flooding downstream along the Blue Earth River.
HAZARD...Flash flooding from the failure of Rapidan Dam.
SOURCE...Dam operator.
IMPACT...Flooding of areas downstream from the Rapidan Dam
along the Blue Earth.
This includes the following streams and drainages...
Minneopa Creek, Blue Earth River and Le Sueur River.
Flooding is occurring along the Blue Earth.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you are in low lying areas below the Rapidan Dam you should move
to higher ground immediately.
&&
LAT...LON 4412 9413 4414 9411 4414 9409 4414 9407
4413 9405 4412 9404 4412 9405 4412 9406
4412 9407 4412 9408 4411 9410 4410 9411
4409 9410 4409 9412 4409 9413 4410 9414
FLASH FLOOD...OBSERVED
DAM FAILURE...OCCURRING
$$
Borghoff1 follow-up statement
938
WGUS53 KMPX 242120
FFWMPX
MNC013-251530-
/O.EXT.KMPX.FF.W.0008.000000T0000Z-240625T1530Z/
/00000.U.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
420 PM CDT Mon Jun 24 2024
The National Weather Service in the Twin Cities has extended the
* Flash Flood Warning for...
A Dam Breach on the Blue Earth River below Rapidan Dam in...
Central Blue Earth County in south central Minnesota...
* Until 1030 AM CDT Tuesday.
* At 420 PM CDT, water continues to erode one bank of the Rapidan
Dam causing the Blue Earth River to bypass the dam uncontrolled.
HAZARD...Flash flooding from the breach of Rapidan Dam.
SOURCE...Dam operator.
IMPACT...Flooding of areas downstream from the Rapidan Dam
along the Blue Earth River.
This includes the following streams and drainages...
Blue Earth River, Le Sueur River and Minneopa Creek.
Flooding is occurring along the Blue Earth River.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you are in low lying areas below the Rapidan Dam you should move
to higher ground immediately.
&&
LAT...LON 4412 9413 4414 9411 4414 9409 4414 9407
4413 9405 4412 9404 4412 9405 4412 9406
4412 9407 4412 9408 4411 9410 4410 9411
4409 9410 4409 9412 4409 9413 4410 9414
FLASH FLOOD...OBSERVED
DAM FAILURE...OCCURRING
$$
BorghoffThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 2:24 AM CDT | Heat Advisory | MPX | Blue Earth, Brown, Chippewa, Faribault, Lac qui Parle, Martin and 5 more | 18 hr |
| Jun 24, 12:07 PM CDT | Flood Watch | MPX | Anoka, Carver, Chisago, Dakota, Freeborn, Goodhue and 11 more | 13 hr |
Nearby
Flash Flood Warnings in Minnesota, 2024Every flash flood warning 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.