Alert archive / Minnesota / Flash Flood Warnings in 2021
Flash Flood Warning 2, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 27, 2021, 2:06 AM CDT for Freeborn County, Minnesota. It was in force for 5 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
- Aug 27, 2021, 2:06 AM CDT (07:06 UTC)
- Expired
- Aug 27, 2021, 7:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
County Freeborn County, MN
The radar
The Minneapolis radar (KMPX), 147 km from the middle of the area, began a volume at 07:10 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, 7.1 hours before the alert went out and 148 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
- 792 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 393 m²/s²
- 0-3 km storm-relative helicity
- 392 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
704
WGUS53 KMPX 270706
FFWMPX
MNC047-271200-
/O.NEW.KMPX.FF.W.0002.210827T0706Z-210827T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
206 AM CDT Fri Aug 27 2021
The National Weather Service in the Twin Cities has issued a
* Flash Flood Warning for...
Southeastern Freeborn County in south central Minnesota...
* Until 700 AM CDT.
* At 206 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. The expected rainfall rate is 1 to 2 inches in 1
hour. Additional rainfall amounts of 2 to 3 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.
* Some locations that will experience flash flooding include...
Glenville, Emmons, London and Myrtle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4350 9361 4361 9306 4360 9305 4350 9305
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
Borghoff1 follow-up statement
116 WGUS73 KMPX 271202 FFSMPX Flash Flood Statement National Weather Service Twin Cities/Chanhassen MN 702 AM CDT Fri Aug 27 2021 MNC047-271212- /O.EXP.KMPX.FF.W.0002.000000T0000Z-210827T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Freeborn MN- 702 AM CDT Fri Aug 27 2021 ...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHEASTERN FREEBORN COUNTY... Flood waters have receded. The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. LAT...LON 4350 9361 4361 9306 4360 9305 4350 9305 $$ @NWSTwinCities
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 12:56 AM CDT | Special Weather Statement | MPX | Martin | 34 min |
| Aug 27, 2:59 AM CDT | Special Weather Statement | MPX | Brown, Faribault, Martin, Redwood, Watonwan | 3 hr |
| Aug 27, 4:09 AM CDT | Flash Flood Warning | MPX | Faribault, Freeborn | 3 hr |
| Aug 27, 6:12 AM CDT | Special Weather Statement | MPX | Ramsey | 2 hr |
Nearby
Flash Flood Warnings in Minnesota, 2021Every flash flood warning 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.