Alert archive / Minnesota / Areal Flood Warnings in 2011
Areal Flood Warning 2, NWS Twin Cities, MN
NWS Twin Cities, MN issued this areal flood warning at Mar 20, 2011, 11:26 PM CDT for Le Sueur County, Scott County, Sibley County, Minnesota. It was in force for 24 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Mar 20, 2011, 11:26 PM CDT (04:26 UTC)
- Expired
- Mar 21, 2011, 11:30 PM CDT
- In force
- 24 hr
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Le Sueur County, MN, Scott County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 42 km from the middle of the area, began a volume at 04:29 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 21, 7:26 AM CDT | FLOOD | Henderson, MN | WATER STILL RISING FROM ICE JAM ON MINNESOTA RIVER. WATER NOW COVERS HIGHWAY 19. ROAD REMAINS CLOSED. LOCAL OFFICIALS ALSO WATCHING HIGHWAY 93 FOR POSSIBLE CLOSURE LATER IF WATER CONTINUES TO RISE. |
| Mar 21, 5:23 PM CDT | FLOOD | Henderson, MN | ICE JAM ON THE RUSH RIVER THAT EXTENDS FROM THE MINNESOTA RIVER UP THE RUSH RIVER TO THE WEST. WATER AND ICE HAS FLOODED COUNTY ROAD 93. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 4.4 hours before the alert went out and 41 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
- 481 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
750 WGUS43 KMPX 210426 FLWMPX BULLETIN - IMMEDIATE BROADCAST REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1126 PM CDT SUN MAR 20 2011 MNC079-139-143-220430- /O.NEW.KMPX.FA.W.0002.110321T0426Z-110322T0430Z/ /00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SCOTT MN-SIBLEY MN-LE SUEUR MN- 1126 PM CDT SUN MAR 20 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * FLOOD WARNING FOR ICE JAM FLOODING IN... EAST CENTRAL SIBLEY COUNTY IN CENTRAL MINNESOTA... EXTREME SOUTHWESTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA... NORTHWESTERN LE SUEUR COUNTY IN SOUTH CENTRAL MINNESOTA... * UNTIL 1130 PM CDT MONDAY * AT 1123 PM CDT...EMERGENCY MANAGEMENT REPORTED AN ICE JAM FORMING ALONG THE HIGHWAY 19 BRIDGE NEAR HENDERSON. DUE TO THIS ICE JAM...THE HIGHWAY 19 BRIDGE IS CLOSED AT HENDERSON. IF CONDITIONS WARRANT...AND IF THE ICE JAM CONTINUES...PARTS OF HIGHWAY 93 NEAR HENDERSON WILL FLOOD. UNTIL THE ICE JAM IS CLEARED OR BREAKS UP...THE AREAL FLOOD WARNING WILL CONTINUE. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...HENDERSON. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. TURN AROUND... DONT DROWN! && LAT...LON 4459 9387 4449 9387 4449 9392 4458 9393 $$ JLT
4 follow-up statements
328 WGUS83 KMPX 210513 FLSMPX FLOOD STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1213 AM CDT MON MAR 21 2011 MNC079-139-143-220430- /O.CON.KMPX.FA.W.0002.000000T0000Z-110322T0430Z/ /00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SCOTT MN-SIBLEY MN-LE SUEUR MN- 1213 AM CDT MON MAR 21 2011 ...FLOOD WARNING FOR ICE JAM FLOODING REMAINS IN EFFECT FOR EXTREME NORTHWESTERN LE SUEUR...EAST CENTRAL SIBLEY AND EXTREME SOUTHWESTERN SCOTT COUNTIES UNTIL 1130 PM CDT MONDAY... AT 1209 AM CDT...EMERGENCY MANAGEMENT REPORTED THAT AN ICE JAM HAS CAUSED THE MINNESOTA RIVER TO RISE SIGNIFICANTLY...AND TO FLOOD HIGHWAY 19 EAST OF THE HIGHWAY 19 BRIDGE AT HENDERSON. IN ADDITION...IF THE ICE JAM CAUSES MORE FLOOD WATERS TO BACKUP SOUTH OF THE BRIDGE...PORTIONS OF HIGHWAY 93...APPROXIMATELY TWO MILES SOUTH OF HENDERSON WILL CLOSE. UNTIL THE ICE JAM IS CLEARED OR BREAKS UP...THE AREAL FLOOD WARNING WILL CONTINUE. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...HENDERSON. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. && LAT...LON 4459 9387 4449 9387 4449 9392 4458 9393 $$ JLT
179 WGUS83 KMPX 211536 FLSMPX FLOOD STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1036 AM CDT MON MAR 21 2011 MNC079-139-143-220430- /O.CON.KMPX.FA.W.0002.000000T0000Z-110322T0430Z/ /00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SCOTT MN-SIBLEY MN-LE SUEUR MN- 1036 AM CDT MON MAR 21 2011 ...FLOOD WARNING FOR ICE JAM FLOODING REMAINS IN EFFECT FOR EXTREME NORTHWESTERN LE SUEUR...EAST CENTRAL SIBLEY AND EXTREME SOUTHWESTERN SCOTT COUNTIES UNTIL 1130 PM CDT MONDAY... AT 726 AM CDT...FIRE DEPARTMENT OFFICIALS IN HENDERSON REPORTED THAT WATER LEVELS ON THE MINNESOTA RIVER WERE CONTINUING TO RISE AT HENDERSON...DUE TO AN ICE JAM. WATER WAS FLOWING OVER HIGHWAY 19 EAST OF THE HIGHWAY 19 BRIDGE AT HENDERSON. THE ROAD REMAINS CLOSED. LOCAL OFFICIALS ALSO ADVISED THAT IF THE ICE JAM CAUSES ADDITIONAL WATER TO BACKUP SOUTH OF THE BRIDGE...PORTIONS OF HIGHWAY 93 APPROXIMATELY TWO MILES SOUTH OF HENDERSON WILL CLOSE. UNTIL THE ICE JAM IS CLEARED OR BREAKS UP...THE AREAL FLOOD WARNING WILL CONTINUE. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES. && LAT...LON 4459 9387 4449 9387 4449 9392 4458 9393 $$ MARGRAF
553 WGUS83 KMPX 212257 FLSMPX FLOOD STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 557 PM CDT MON MAR 21 2011 MNC079-139-143-220430- /O.CON.KMPX.FA.W.0002.000000T0000Z-110322T0430Z/ /00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SCOTT MN-SIBLEY MN-LE SUEUR MN- 557 PM CDT MON MAR 21 2011 ...FLOOD WARNING FOR ICE JAM FLOODING REMAINS IN EFFECT FOR EXTREME NORTHWESTERN LE SUEUR...EAST CENTRAL SIBLEY AND EXTREME SOUTHWESTERN SCOTT COUNTIES UNTIL 1130 PM CDT... AT 530 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT AN ADDITIONAL ICE JAM HAD FORMED ON THE RUSH RIVER SOUTH OF HENDERSON... UPSTREAM FROM THE MINNESOTA RIVER. IT IS LIKELY THAT ICE HAS BACKED UP ALONG THE RUSH RIVER...FROM THE MINNESOTA RIVER. THIS HAS CAUSED HIGHWAY 93 TO BE CLOSED...NORTH OF LE SUEUR TO HENDERSON. THE ICE JAM ALONG THE MINNESOTA RIVER NEAR HENDERSON HAS BROKEN UP. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES. && LAT...LON 4459 9387 4449 9387 4449 9392 4458 9393 $$ JPR/DFC
302 WGUS83 KMPX 220425 FLSMPX FLOOD STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1125 PM CDT MON MAR 21 2011 MNC079-139-143-220439- /O.EXP.KMPX.FA.W.0002.000000T0000Z-110322T0430Z/ /00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SCOTT MN-SIBLEY MN-LE SUEUR MN- 1125 PM CDT MON MAR 21 2011 ...THE FLOOD WARNING THAT WAS IN EFFECT FOR EXTREME NORTHWESTERN LE SUEUR...EAST CENTRAL SIBLEY AND EXTREME SOUTHWESTERN SCOTT COUNTIES WILL BE ALLOWED TO EXPIRE AT 1130 PM CDT... PLEASE REFER TO THE MINNESOTA DEPARTMENT OF TRANSPORTATION ROAD CONDITION SITE FOR INFORMATION RELATED TO COUNTY AND STATE HIGHWAYS THAT ARE CLOSED DUE TO FLOODING. ALTHOUGH ICE JAMS CAN QUICKLY FORM ACROSS THE WARNED AREA...THE SPECIFIC ICE JAM NEAR HENDERSON THAT CAUSED HIGHWAY 19 BETWEEN HENDERSON AND HIGHWAY 169 TO CLOSE...HAS BROKEN UP. LAT...LON 4459 9387 4449 9387 4449 9392 4458 9393 $$ JLT
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 3:20 PM CDT | Winter Storm Warning | MPX | Anoka, Benton, Carver, Chippewa, Chisago, Douglas and 22 more | 52 hr |
| Mar 21, 3:30 PM CDT | Flood Watch | MPX | Anoka, Carver, Dakota, Hennepin, McLeod, Ramsey and 4 more | 31 hr |
| Mar 21, 3:38 PM CDT | Areal Flood Warning | MPX | Blue Earth, Brown, Faribault, Freeborn, Goodhue, Le Sueur and 8 more | 7 days |
| Mar 21, 5:01 PM CDT | River Flood Warning | MPX | Goodhue | 54 hr |
Nearby
Areal Flood Warnings in Minnesota, 2011Every areal flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.