Alert archive / Minnesota / Flash Flood Watches in 2015
Flash Flood Watch 4, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood watch at Aug 18, 2015, 3:08 AM CDT for 10 counties in Minnesota. It took effect at Aug 18, 2015, 10:00 AM CDT. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2015, 3:08 AM CDT (08:08 UTC)
- In effect from
- Aug 18, 2015, 10:00 AM CDT
- Expired
- Aug 18, 2015, 12:46 PM CDT
- In force
- 3 hr
- Issued by
- NWS Twin Cities, MN
- Flood severity
- None
Counties Blue Earth County, MN, Brown County, MN, Faribault County, MN, Le Sueur County, MN, Martin County, MN, Nicollet County, MN, Redwood County, MN, Sibley County, MN, Waseca County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 98 km from the middle of the area, began a volume at 08:09 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, 8.1 hours before the alert went out and 97 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
- 3 J/kg
- Mixed-layer CIN
- -381 J/kg
- Mixed-layer LCL
- 940 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -78 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
381 WGUS63 KMPX 180808 FFAMPX URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 308 AM CDT TUE AUG 18 2015 ...HEAVY RAIN EXPECTED WITH FLASH FLOODING POSSIBLE ACROSS SOUTHERN MINNESOTA TODAY... .A STRONG STORM SYSTEM WILL BRING CHANCES FOR HEAVY RAIN ACROSS SOUTHERN MINNESOTA TODAY. THIS AREA HAS RECEIVED OVER 2 INCHES OF RAIN THE LAST FEW DAYS. ADDITIONAL HEAVY RAIN COULD LEAD TO FLASH FLOODING. MNZ067-073>076-082>084-091-092-181615- /O.NEW.KMPX.FF.A.0004.150818T1500Z-150819T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SIBLEY-REDWOOD-BROWN-NICOLLET-LE SUEUR-WATONWAN-BLUE EARTH-WASECA- MARTIN-FARIBAULT- INCLUDING THE CITIES OF...GAYLORD...REDWOOD FALLS...NEW ULM... ST. PETER...LE SUEUR...ST. JAMES...MANKATO...WASECA...FAIRMONT... BLUE EARTH 308 AM CDT TUE AUG 18 2015 ...FLASH FLOOD WATCH IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH THIS EVENING... THE NATIONAL WEATHER SERVICE IN TWIN CITIES/CHANHASSEN HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL MINNESOTA...SOUTH CENTRAL MINNESOTA AND SOUTHWEST MINNESOTA...INCLUDING THE FOLLOWING AREAS...IN CENTRAL MINNESOTA...SIBLEY. IN SOUTH CENTRAL MINNESOTA...BLUE EARTH...BROWN...FARIBAULT...LE SUEUR...MARTIN...NICOLLET...WASECA AND WATONWAN. IN SOUTHWEST MINNESOTA...REDWOOD. * FROM 10 AM CDT THIS MORNING THROUGH THIS EVENING. * ADDITIONAL HEAVY RAIN ON SATURDATED SOILS. 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. && $$ JRB
2 follow-up statements
249 WGUS63 KMPX 181602 FFAMPX FLOOD WATCH NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1102 AM CDT TUE AUG 18 2015 ...HEAVY RAIN EXPECTED WITH FLASH FLOODING POSSIBLE ACROSS SOUTHERN MINNESOTA THIS AFTEROON... .A STRONG STORM SYSTEM WILL BRING CHANCES FOR HEAVY RAIN ACROSS SOUTHERN MINNESOTA TODAY. THIS AREA HAS RECEIVED OVER 2 INCHES OF RAIN THE LAST FEW DAYS AND UP TO AN INCH NEAR THE IOWA BORDER THIS MORNING. ADDITIONAL HEAVY RAIN COULD LEAD TO FLASH FLOODING. MNZ067-073>076-082>084-091-092-190000- /O.CON.KMPX.FF.A.0004.000000T0000Z-150819T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SIBLEY-REDWOOD-BROWN-NICOLLET-LE SUEUR-WATONWAN-BLUE EARTH-WASECA- MARTIN-FARIBAULT- INCLUDING THE CITIES OF...GAYLORD...REDWOOD FALLS...NEW ULM... ST. PETER...LE SUEUR...ST. JAMES...MANKATO...WASECA...FAIRMONT... BLUE EARTH 1102 AM CDT TUE AUG 18 2015 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF CENTRAL MINNESOTA...SOUTH CENTRAL MINNESOTA AND SOUTHWEST MINNESOTA...INCLUDING THE FOLLOWING AREAS...IN CENTRAL MINNESOTA...SIBLEY. IN SOUTH CENTRAL MINNESOTA...BLUE EARTH...BROWN...FARIBAULT...LE SUEUR...MARTIN...NICOLLET... WASECA AND WATONWAN. IN SOUTHWEST MINNESOTA...REDWOOD. * UNTIL 7 PM CDT THIS EVENING * ADDITIONAL HEAVY RAIN ON SATURDATED SOILS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED. && $$
516 WGUS63 KMPX 181746 FFAMPX FLOOD WATCH NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1246 PM CDT TUE AUG 18 2015 ...THE SHOWER AND THUNDERSTORM ACTIVITY HAS WEAKENED AND EVEN ENDED ACROSS MUCH OF THE AREA... .THE THREAT FOR FLASH FLOODING IS MINIMAL AT THIS TIME. ADDITIONAL ISOLATED TO SCATTERED STORMS COULD INITIATE LATER THIS AFTERNOON...BUT THE THREAT FOR FLASH FLOODING IS LOW. MNZ067-073>076-082>084-091-092-181900- /O.CAN.KMPX.FF.A.0004.000000T0000Z-150819T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SIBLEY-REDWOOD-BROWN-NICOLLET-LE SUEUR-WATONWAN-BLUE EARTH-WASECA- MARTIN-FARIBAULT- INCLUDING THE CITIES OF...GAYLORD...REDWOOD FALLS...NEW ULM... ST. PETER...LE SUEUR...ST. JAMES...MANKATO...WASECA...FAIRMONT... BLUE EARTH 1246 PM CDT TUE AUG 18 2015 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL MINNESOTA...SOUTH CENTRAL MINNESOTA AND SOUTHWEST MINNESOTA HAS BEEN CANCELLED. DRY SOUTHWESTERLY FLOW IN THE LOW LEVELS OF THE ATMOSPHERE HAS CUT OFF THE MOISTURE FEED AND ENDED OR WEAKENED THE PRECIPITATION SIGNIFICANTLY ACROSS SOUTHERN MN. $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 12:14 PM CDT | Special Weather Statement | MPX | Martin, Watonwan | 61 min |
Nearby
Flash Flood Watches in Minnesota, 2015Every flash flood watch in 2015
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.