Alert archive / Minnesota / Flash Flood Warnings in 2012
Flash Flood Warning 10, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this flash flood warning at May 6, 2012, 12:01 AM CDT for 4 counties in 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
- May 6, 2012, 12:01 AM CDT (05:01 UTC)
- Expired
- May 6, 2012, 4:00 AM CDT
- In force
- 4 hr
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lincoln County, MN, Lyon County, MN, Murray County, MN, Pipestone County, MN
The radar
The Sioux Falls radar (KFSD), 91 km from the middle of the area, began a volume at 05:01 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, 5.0 hours before the alert went out and 200 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
- 850 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
189 WGUS53 KFSD 060501 FFWFSD MNC081-083-101-117-061100- /O.NEW.KFSD.FF.W.0010.120506T0501Z-120506T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1201 AM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHERN PIPESTONE COUNTY IN SOUTHWEST MINNESOTA NORTHWESTERN MURRAY COUNTY IN SOUTHWEST MINNESOTA SOUTHERN LINCOLN COUNTY IN SOUTHWEST MINNESOTA SOUTHERN LYON COUNTY IN SOUTHWEST MINNESOTA * UNTIL 600 AM CDT SUNDAY * AT 1156 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATES RAINFALL OF 2 TO 4 INCHES HAS ALREADY FALLEN ACROSS THE WARNED AREA. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... PIPESTONE...BALATON...CAMDEN STATE PARK...CURRENT LAKE... FLORENCE...HOLLAND...LAKE BENTON...PIPESTONE NATIONAL MONUMENT... RUSSELL...RUTHTON...TRACY AND TYLER. SECONDARY ROADS NORTH OF PIPESTONE ARE BEGINNING TO SEE PONDING OF WATER. PRECAUTIONARY/PREPAREDNESS ACTIONS... ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE WARNED AREA. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. && LAT...LON 4413 9560 4394 9646 4428 9645 4442 9560 $$ JH
1 follow-up statement
356 WGUS73 KFSD 060900 FFSFSD FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 400 AM CDT SUN MAY 6 2012 MNC081-083-101-117-060915- /O.CAN.KFSD.FF.W.0010.000000T0000Z-120506T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LINCOLN MN-LYON MN-MURRAY MN-PIPESTONE MN- 400 AM CDT SUN MAY 6 2012 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN PIPESTONE...NORTHWESTERN MURRAY...SOUTHERN LYON AND SOUTHERN LINCOLN COUNTIES IS CANCELLED... THE THREAT OF HEAVY RAIN AND FLASH FLOODING HAS ENDED ACROSS THE AREA. THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 4 AM CDT. HOWEVER...FLOODING IN LOW LYING AREAS AND NEAR RIVERS AND STREAMS IS STILL POSSIBLE. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN REPLACED WITH A FLOOD WARNING WHICH IS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON. LAT...LON 4413 9560 4394 9646 4428 9645 4442 9560 $$ CJ
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 9:29 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 46 min |
| May 5, 9:42 PM CDT | Severe Thunderstorm Warning | FSD | Pipestone, Rock | 48 min |
| May 5, 10:07 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon | 38 min |
| May 5, 10:28 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon, Murray, Nobles, Pipestone, Rock | 62 min |
| May 5, 11:25 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Lyon, Murray, Pipestone | 65 min |
| May 6, 12:28 AM CDT | Severe Thunderstorm Warning | FSD | Murray, Pipestone | 47 min |
| May 6, 1:08 AM CDT | Areal Flood Warning | FSD | Lincoln, Lyon, Murray, Nobles, Pipestone, Rock | 33 hr |
| May 6, 4:08 AM CDT | River Flood Warning | FSD | Pipestone | 23 hr |
| May 6, 8:24 AM CDT | River Flood Warning | FSD | Lyon | 71 hr |
| May 6, 6:58 PM CDT | River Flood Warning | FSD | Rock | 3 days |
Nearby
Flash Flood Warnings in Minnesota, 2012Every flash flood warning in 2012
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.