Alert archive / Minnesota / Flash Flood Watches in 2011
Flash Flood Watch 2, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood watch at Jul 27, 2011, 12:04 AM CDT for 26 counties in Minnesota. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Jul 27, 2011, 12:04 AM CDT (05:04 UTC)
- Expired
- Jul 27, 2011, 9:00 AM CDT
- In force
- 9 hr
- Issued by
- NWS Twin Cities, MN
- Flood severity
- None
All 26 counties
Anoka County, MN, Benton County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Ramsey County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Swift County, MN, Todd County, MN, Washington County, MN, Wright County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 62 km from the middle of the area, began a volume at 05:05 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, 5.1 hours before the alert went out and 60 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
- 1713 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
573 WGUS63 KMPX 270504 FFAMPX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1204 AM CDT WED JUL 27 2011 ...HEAVY RAIN DEVELOPING OVERNIGHT... .CLUSTERS OF STRONG THUNDERSTORMS WILL BE MOVING ACROSS PORTIONS OF CENTRAL MINNESOTA OVERNIGHT...WHICH COULD LEAD TO FLOODING. RAINFALL OF 1 TO 2 INCHES IN A SHORT TIME OVER URBAN AREAS...ESPECIALLY IN AND AROUND ST CLOUD...AND PARTS OF THE TWIN CITIES COULD CAUSE LOCALIZED FLASH FLOODING OF LOW LYING AREAS...STREETS AND UNDERPASSES. A FLASH FLOOD WATCH HAS BEEN ISSUED FOR AREAS GENERALLY NORTH OF A LINE FROM AROUND GRANITE FALLS...TO GLENCOE...TO THE TWIN CITIES. IT APPEARS THAT THE HEAVIEST RAINS WILL MOVE OUT OF THE AREA BY ABOUT 8 AM. HOWEVER...IT IS POSSIBLE THAT AREAS FARTHER SOUTH OVER SOUTH CENTRAL MINNESOTA MAY BE UNDER A THREAT OF HEAVY RAIN LATE IN THE MORNING INTO THE AFTERNOON. MNZ042>045-049>070-271315- /O.NEW.KMPX.FF.A.0002.110727T0504Z-110727T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ TODD-MORRISON-MILLE LACS-KANABEC-STEARNS-BENTON-SHERBURNE-ISANTI- CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-KANDIYOHI-MEEKER-WRIGHT- HENNEPIN-ANOKA-RAMSEY-WASHINGTON-YELLOW MEDICINE-RENVILLE-MCLEOD- SIBLEY-CARVER-SCOTT-DAKOTA- INCLUDING THE CITIES OF...LONG PRAIRIE...LITTLE FALLS... PRINCETON...MORA...ST. CLOUD...FOLEY...ELK RIVER...CAMBRIDGE... CENTER CITY...MADISON...BENSON...MONTEVIDEO...WILLMAR... LITCHFIELD...MONTICELLO...MINNEAPOLIS...BLAINE...ST. PAUL... STILLWATER...GRANITE FALLS...OLIVIA...HUTCHINSON...GAYLORD... CHASKA...SHAKOPEE...BURNSVILLE 1204 AM CDT WED JUL 27 2011 ...FLASH FLOOD WATCH IN EFFECT UNTIL 10 AM CDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL MINNESOTA...EAST CENTRAL MINNESOTA AND WEST CENTRAL MINNESOTA...INCLUDING THE FOLLOWING AREAS...IN CENTRAL MINNESOTA...BENTON...KANDIYOHI... MCLEOD...MEEKER...MORRISON...RENVILLE...SHERBURNE...SIBLEY... STEARNS...TODD AND WRIGHT. IN EAST CENTRAL MINNESOTA...ANOKA... CARVER...CHISAGO...DAKOTA...HENNEPIN...ISANTI...KANABEC... MILLE LACS...RAMSEY...SCOTT AND WASHINGTON. IN WEST CENTRAL MINNESOTA...CHIPPEWA...LAC QUI PARLE...SWIFT AND YELLOW MEDICINE. * UNTIL 10 AM CDT WEDNESDAY * VERY HEAVY RAIN WITH THUNDERSTORMS COULD PRODUCE RAINFALL RATES OF 1 TO 2 INCHES IN AN HOUR. RAINFALL TOTALS COULD EXCEED 3 INCHES IN A FEW SPOTS. * FLASH FLOODING OF LOW LYING AND URBAN AREAS...INCLUDING HIGHWAYS AND UNDERPASSES...AS WELL AS ALONG SMALL CREEKS AND STREAMS...IS POSSIBLE OVERNIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
2 follow-up statements
603 WGUS63 KMPX 270938 FFAMPX FLOOD WATCH NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 438 AM CDT WED JUL 27 2011 ...PERIODS OF HEAVY RAINFALL EARLY THIS MORNING... .THE FLASH FLOOD WATCH REMAINS IN EFFECT FOR PORTIONS OF THE CENTRAL AND SOUTHERN TWIN CITIES METRO AREA AND FOR MCLEOD...RENVILLE...AND SIBLEY COUNTIES. THE WATCH HAS BEEN CANCELLED FOR THE REMAINDER OF CENTRAL MINNESOTA. ACROSS THE CURRENT WATCH AREA...OVERNIGHT THUNDERSTORMS PRODUCED RAINFALL OF ONE HALF TO ONE INCH IN A SHORT AMOUNT OF TIME. THIS AREA IS ALREADY WET FROM RECENT RAINFALLS. WITH A CONTINUED THREAT FOR HEAVY RAINFALL RATES WITH ANY STORMS EARLY THIS MORNING...THERE MAY BE SOME COMMUNITIES TO HAVE SOME FLASH FLOODING ISSUES. AREAS FARTHER SOUTH OVER SOUTH CENTRAL MINNESOTA ARE UNDER A THREAT OF HEAVY RAIN LATE IN THE MORNING. IF THIS THREAT LOOKS TO LAST LONGER INTO THE AFTERNOON...A FLASH FLOOD WATCH MAY BE NEEDED. MNZ042>045-049>059-061-064-271045- /O.CAN.KMPX.FF.A.0002.000000T0000Z-110727T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ TODD-MORRISON-MILLE LACS-KANABEC-STEARNS-BENTON-SHERBURNE-ISANTI- CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-KANDIYOHI-MEEKER-WRIGHT- ANOKA-YELLOW MEDICINE- INCLUDING THE CITIES OF...LONG PRAIRIE...LITTLE FALLS... PRINCETON...MORA...ST. CLOUD...FOLEY...ELK RIVER...CAMBRIDGE... CENTER CITY...MADISON...BENSON...MONTEVIDEO...WILLMAR... LITCHFIELD...MONTICELLO...BLAINE...GRANITE FALLS 438 AM CDT WED JUL 27 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL MINNESOTA...EAST CENTRAL MINNESOTA AND WEST CENTRAL MINNESOTA HAS BEEN CANCELLED. RAINFALL HAS EXITED MUCH OF CENTRAL MINNESOTA. WHILE THERE STILL MAY BE A FEW SHOWERS AND STORMS TO REDEVELOP ACROSS THIS AREA DURING THIS MORNING...THEY SHOULD BE ISOLATED IN NATURE. THUS THE FLASH FLOOD WATCH HAS BEEN CANCELLED. $$ MNZ060-062-063-065>070-271500- /O.CON.KMPX.FF.A.0002.000000T0000Z-110727T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HENNEPIN-RAMSEY-WASHINGTON-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT- DAKOTA- INCLUDING THE CITIES OF...MINNEAPOLIS...ST. PAUL...STILLWATER... OLIVIA...HUTCHINSON...GAYLORD...CHASKA...SHAKOPEE...BURNSVILLE 438 AM CDT WED JUL 27 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT THIS MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF CENTRAL MINNESOTA AND EAST CENTRAL MINNESOTA... INCLUDING THE FOLLOWING AREAS...IN CENTRAL MINNESOTA... MCLEOD...RENVILLE AND SIBLEY. IN EAST CENTRAL MINNESOTA... CARVER...DAKOTA...HENNEPIN...RAMSEY...SCOTT AND WASHINGTON. * UNTIL 10 AM CDT THIS MORNING. * HEAVY RAINFALL RATES OF ONE TO ONE AND A HALF INCHES IN AN HOUR WITH THUNDERSTORMS. * FLASH FLOODING OF LOW LYING AND URBAN AREAS...INCLUDING HIGHWAYS AND UNDERPASSES...AS WELL AS ALONG SMALL CREEKS AND STREAMS...IS POSSIBLE OVERNIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
642 WGUS63 KMPX 271400 FFAMPX FLOOD WATCH NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 900 AM CDT WED JUL 27 2011 ...HEAVY RAINS ARE NOT EXPECTED THE REST OF TODAY ACROSS CENTRAL MINNESOTA AND THE TWIN CITIES METRO... .THUNDERSTORMS HAVE MOVED EAST OF THE WATCH AREA...WITH ANY ADDITIONAL DEVELOPMENT EXPECTED TO BE ACROSS SOUTHEAST MINNESOTA INTO SOUTHWEST WISCONSIN. WITH NO ADDITIONAL EXCESSIVE RAINFALL EXPECTED THROUGH THE MORNING...THE FLASH FLOOD WATCH HAS BEEN CANCELED. MNZ060-062-063-065>070-271500- /O.CAN.KMPX.FF.A.0002.000000T0000Z-110727T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ HENNEPIN-RAMSEY-WASHINGTON-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT- DAKOTA- INCLUDING THE CITIES OF...MINNEAPOLIS...ST. PAUL...STILLWATER... OLIVIA...HUTCHINSON...GAYLORD...CHASKA...SHAKOPEE...BURNSVILLE 900 AM CDT WED JUL 27 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL MINNESOTA AND EAST CENTRAL MINNESOTA HAS BEEN CANCELLED. THUNDERSTORMS HAVE MOVED EAST OF THE WATCH AREA...WITH ANY ADDITIONAL DEVELOPMENT LATER TODAY EXPECTED TO BE ACROSS SOUTHEAST MINNESOTA INTO SOUTHWEST WISCONSIN. WITH NO ADDITIONAL EXCESSIVE RAINFALL EXPECTED THROUGH THE MORNING...THE FLASH FLOOD WATCH HAS BEEN CANCELED. $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 8:56 PM CDT | Special Weather Statement | MPX | Douglas, Stevens | 64 min |
| Jul 26, 9:36 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Pope, Stevens, Swift | 54 min |
| Jul 26, 10:26 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Douglas, Lac qui Parle, Pope, Stevens, Swift | 79 min |
| Jul 26, 11:59 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Pope, Stearns, Swift | 61 min |
| Jul 27, 2:22 AM CDT | Special Weather Statement | MPX | Chisago, Isanti, Kanabec | 23 min |
| Jul 27, 3:16 AM CDT | Special Weather Statement | MPX | Brown | 59 min |
| Jul 27, 3:49 AM CDT | Special Weather Statement | MPX | Brown, McLeod, Nicollet, Sibley | 56 min |
| Jul 27, 5:24 AM CDT | Areal Flood Advisory | MPX | Blue Earth, Faribault, Martin, Watonwan | 4 hr |
Nearby
Flash Flood Watches in Minnesota, 2011Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.