Alert archive / Minnesota / Flash Flood Warnings in 2024
Flash Flood Warning 1, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at May 21, 2024, 4:41 PM CDT for 4 counties in Minnesota. It was in force for 3 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
- May 21, 2024, 4:41 PM CDT (21:41 UTC)
- Expired
- May 21, 2024, 7:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Blue Earth County, MN, Martin County, MN, Nicollet County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 112 km from the middle of the area, began a volume at 21:45 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, 9.7 hours before the alert went out and 111 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
- 67 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 840 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
461
WGUS53 KMPX 212141
FFWMPX
MNC013-091-103-165-220045-
/O.NEW.KMPX.FF.W.0001.240521T2141Z-240522T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
441 PM CDT Tue May 21 2024
The National Weather Service in the Twin Cities has issued a
* Flash Flood Warning for...
Western Blue Earth County in south central Minnesota...
Northeastern Martin County in south central Minnesota...
Southeastern Nicollet County in south central Minnesota...
Southeastern Watonwan County in south central Minnesota...
* Until 745 PM CDT.
* At 441 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 1.5 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.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4403 9438 4414 9418 4420 9416 4424 9402
4416 9396 4407 9391 4398 9397 4385 9418
4385 9419 4385 9421 4385 9425 4383 9425
4380 9425 4373 9435 4374 9461 4391 9454
FLASH FLOOD...RADAR INDICATED
$$
TDH1 follow-up statement
248
WGUS73 KMPX 220037
FFSMPX
Flash Flood Statement
National Weather Service Twin Cities/Chanhassen MN
737 PM CDT Tue May 21 2024
MNC013-091-103-165-220047-
/O.EXP.KMPX.FF.W.0001.000000T0000Z-240522T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Blue Earth MN-Martin MN-Nicollet MN-Watonwan MN-
737 PM CDT Tue May 21 2024
...FLASH FLOOD WARNING WILL EXPIRE AT 745 PM CDT THIS EVENING FOR
WESTERN BLUE EARTH, NORTHEASTERN MARTIN, SOUTHEASTERN NICOLLET AND
SOUTHEASTERN WATONWAN COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 1000 PM CDT for portions of
south central and southeast Minnesota.
&&
LAT...LON 4403 9438 4414 9418 4420 9416 4424 9402
4416 9396 4407 9391 4398 9397 4385 9418
4385 9419 4385 9421 4385 9425 4383 9425
4380 9425 4373 9435 4374 9461 4391 9454
$$
TDHThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 8:01 PM CDT | Special Weather Statement | MPX | Goodhue | 29 min |
| May 20, 8:30 PM CDT | Special Weather Statement | MPX | Goodhue | 30 min |
| May 20, 9:08 PM CDT | River Flood Warning | MPX | Redwood, Renville | 25 hr |
| May 20, 9:37 PM CDT | Special Weather Statement | MPX | Freeborn | 23 min |
| May 20, 10:45 PM CDT | Special Weather Statement | MPX | Sibley | 45 min |
| May 20, 11:08 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 37 min |
| May 20, 11:24 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood, Renville, Sibley | 36 min |
| May 20, 11:27 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 33 min |
| May 20, 11:50 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville, Sibley | 25 min |
| May 21, 12:18 AM CDT | Severe Thunderstorm Warning | MPX | Rice | 27 min |
| May 21, 12:34 AM CDT | Special Weather Statement | MPX | McLeod | 26 min |
| May 21, 1:27 AM CDT | Special Weather Statement | MPX | Chisago | 33 min |
| May 21, 1:54 AM CDT | Severe Thunderstorm Warning | MPX | Chisago | 36 min |
| May 21, 3:59 PM CDT | Tornado Warning | MPX | Blue Earth, Faribault, Martin | 46 min |
| May 21, 4:17 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn, Steele, Waseca | 43 min |
| May 21, 4:26 PM CDT | Tornado Warning | MPX | Blue Earth | 34 min |
| May 21, 4:31 PM CDT | Tornado Warning | MPX | Le Sueur, Waseca | 33 min |
| May 21, 4:46 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 44 min |
| May 21, 4:50 PM CDT | Tornado Warning | MPX | Goodhue, Rice, Steele | 40 min |
| May 21, 4:53 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn, Steele | 46 min |
| May 21, 5:20 PM CDT | Tornado Warning | MPX | Dakota, Goodhue | 22 min |
| May 21, 5:21 PM CDT | Special Weather Statement | MPX | Hennepin, Ramsey, Washington | 54 min |
| May 21, 6:34 PM CDT | Special Weather Statement | MPX | Ramsey | 56 min |
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.