Alert archive / Minnesota / Flash Flood Warnings in 2010
Flash Flood Warning 12, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Jul 23, 2010, 11:41 PM CDT for 5 counties in Minnesota. It was in force for 99 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 23, 2010, 11:41 PM CDT (04:41 UTC)
- Expired
- Jul 24, 2010, 1:20 AM CDT
- In force
- 99 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Brown County, MN, Nicollet County, MN, Redwood County, MN, Renville County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 95 km from the middle of the area, began a volume at 04:44 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, 4.7 hours before the alert went out and 93 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
- 1422 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
319 WGUS53 KMPX 240441 FFWMPX MNC015-103-127-129-143-240730- /O.NEW.KMPX.FF.W.0012.100724T0441Z-100724T0730Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1141 PM CDT FRI JUL 23 2010 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * FLASH FLOOD WARNING FOR... EASTERN REDWOOD COUNTY IN SOUTHWEST MINNESOTA... NORTH CENTRAL BROWN COUNTY IN SOUTH CENTRAL MINNESOTA... NORTHWESTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA... SOUTH CENTRAL RENVILLE COUNTY IN CENTRAL MINNESOTA... SOUTHWESTERN SIBLEY COUNTY IN CENTRAL MINNESOTA... * UNTIL 230 AM CDT * AT 1139 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. PARTS OF WESTERN REDWOOD COUNTY HAVE RECIEVED NEARLY 2 INCHES OF RAIN SINCE 11 PM. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...NEW ULM...REDWOOD FALLS...CLEMENTS...EVAN...FAIRFAX...FRANKLIN... GIBBON...KLOSSNER...LAFAYETTE...MORGAN...MORTON...NORTH REDWOOD... SLEEPY EYE...ST GEORGE AND WINTHROP. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY... COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. 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 4456 9426 4429 9426 4428 9519 4460 9519 $$
1 follow-up statement
520 WGUS73 KMPX 240620 FFSMPX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 120 AM CDT SAT JUL 24 2010 MNC015-103-127-129-143-240633- /O.CAN.KMPX.FF.W.0012.000000T0000Z-100724T0730Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RENVILLE MN-SIBLEY MN-REDWOOD MN-BROWN MN-NICOLLET MN- 120 AM CDT SAT JUL 24 2010 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN NICOLLET...NORTHEASTERN BROWN...EASTERN REDWOOD...SOUTHWESTERN SIBLEY AND SOUTH CENTRAL RENVILLE COUNTIES IS CANCELLED... HEAVY RAINS HAVE MOVED OUT OF THE AREA...AND NO ADDITIONAL THUNDERSTORM DEVELOPMENT IS EXPECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF FLOODING WAS OBSERVED PLEASE RELAY YOUR REPORT TO LOCAL LAW ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES. && LAT...LON 4456 9426 4429 9426 4428 9519 4460 9519 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 10:46 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 44 min |
| Jul 23, 11:13 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Martin, Redwood, Watonwan | 62 min |
| Jul 23, 11:45 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Le Sueur, Nicollet | 46 min |
| Jul 24, 12:20 AM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Rice, Waseca | 25 min |
| Jul 24, 12:30 AM CDT | Special Weather Statement | MPX | Carver, Scott | 45 min |
| Jul 24, 12:41 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Rice, Steele | 34 min |
| Jul 24, 12:49 AM CDT | Areal Flood Advisory | MPX | Carver, Dakota, Goodhue, Le Sueur, McLeod, Rice and 2 more | 3 hr |
| Jul 24, 12:58 AM CDT | Severe Thunderstorm Warning | MPX | Dakota, Goodhue, Rice | 22 min |
| Jul 24, 1:28 AM CDT | Special Weather Statement | MPX | Dakota | 47 min |
Nearby
Flash Flood Warnings in Minnesota, 2010Every flash flood warning in 2010
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.