Alert archive / Minnesota / Flash Flood Warnings in 2017
Flash Flood Warning 6, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 18, 2017, 6:00 PM CDT for Redwood County, Yellow Medicine County, Minnesota. It was in force for 4 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 18, 2017, 6:00 PM CDT (23:00 UTC)
- Expired
- Aug 18, 2017, 10:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Redwood County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 131 km from the middle of the area, began a volume at 23:00 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, 11.0 hours before the alert went out and 128 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
- 23 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 1090 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -47 m²/s²
- 0-3 km storm-relative helicity
- -32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
170
WGUS53 KMPX 182300
FFWMPX
MNC127-173-190300-
/O.NEW.KMPX.FF.W.0006.170818T2300Z-170819T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Twin Cities/Chanhassen MN
600 PM CDT FRI AUG 18 2017
The National Weather Service in The Twin Cities has issued a
* Flash Flood Warning for...
North central Redwood County in southwestern Minnesota...
Southeastern Yellow Medicine County in west central Minnesota...
* Until 1000 PM CDT
* At 559 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to three inches of rain have
already fallen. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Redwood Falls, Echo, Belview, Delhi, North Redwood and Redwood
Falls Airport.
Additional rainfall amounts of one to two inches are possible in the
warned area. Given the recent heavy rains, the area is very
susceptible to ponding of water and flash flooding.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4464 9519 4460 9512 4457 9509 4457 9507
4456 9505 4447 9506 4454 9540 4469 9541
$$
SPDThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 3:54 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 51 min |
| Aug 18, 4:18 PM CDT | Special Weather Statement | MPX | Lac qui Parle | 27 min |
| Aug 18, 4:44 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 31 min |
| Aug 18, 4:55 PM CDT | Special Weather Statement | MPX | Redwood | 35 min |
| Aug 18, 5:07 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Yellow Medicine | 38 min |
| Aug 18, 5:09 PM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 25 min |
| Aug 18, 5:30 PM CDT | Special Weather Statement | MPX | Redwood | 30 min |
| Aug 18, 5:53 PM CDT | Severe Thunderstorm Warning | MPX | Redwood, Renville | 37 min |
| Aug 18, 6:15 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 30 min |
| Aug 18, 6:37 PM CDT | Severe Thunderstorm Warning | MPX | Brown | 23 min |
Nearby
Flash Flood Warnings in Minnesota, 2017Every flash flood warning in 2017
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.