Alert archive / Minnesota / Flash Flood Watches in 2021
Flash Flood Watch 2, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood watch at Aug 26, 2021, 5:44 PM CDT for 28 counties in Minnesota. It took effect at Aug 26, 2021, 6:00 PM CDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Aug 26, 2021, 5:44 PM CDT (22:44 UTC)
- In effect from
- Aug 26, 2021, 6:00 PM CDT
- Expired
- Aug 27, 2021, 7:00 AM CDT
- In force
- 13 hr
- Issued by
- NWS Twin Cities, MN
- Flood severity
- None
All 28 counties
Anoka County, MN, Benton County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Dakota County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Kandiyohi County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Pope County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN
The radar
The Minneapolis radar (KMPX), 33 km from the middle of the area, began a volume at 22:45 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 12:00Z, 10.7 hours before the alert went out and 32 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
- 1566 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
793 WGUS63 KMPX 262244 FFAMPX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Twin Cities/Chanhassen MN 544 PM CDT Thu Aug 26 2021 MNZ048>051-057>063-066>070-075>078-083>085-092-093-270645- /O.NEW.KMPX.FF.A.0002.210826T2300Z-210827T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pope-Stearns-Benton-Sherburne-Kandiyohi-Meeker-Wright-Hennepin-Anoka- Ramsey-Washington-McLeod-Sibley-Carver-Scott-Dakota-Nicollet-Le Sueur-Rice-Goodhue-Blue Earth-Waseca-Steele-Faribault-Freeborn- Including the cities of Le Sueur, St Paul, Sauk Rapids, Chanhassen, Elk River, Albert Lea, St Cloud, Gaylord, Waseca, Mankato, Shakopee, Monticello, Victoria, Faribault, Chaska, Stillwater, Willmar, Litchfield, Hutchinson, St Peter, Red Wing, Hastings, Minneapolis, Owatonna, Glenwood, Blaine, and Blue Earth 544 PM CDT Thu Aug 26 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH FRIDAY MORNING... The National Weather Service in the Twin Cities has issued a * Flash Flood Watch for portions of central Minnesota, east central Minnesota, south central Minnesota, southeast Minnesota and west central Minnesota, including the following counties, in central Minnesota, Benton, Kandiyohi, McLeod, Meeker, Sherburne, Sibley, Stearns and Wright. In east central Minnesota, Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and Washington. In south central Minnesota, Blue Earth, Faribault, Freeborn, Le Sueur, Nicollet, Rice, Steele and Waseca. In southeast Minnesota, Goodhue. In west central Minnesota, Pope. * Through Friday morning. * A band of training thunderstorms is beginning to develop just south of I-94. This activity is likely to continue or become more widespread through the evening hours and produce areas of very heavy rain. Localized totals greater than 3 inches are possible, leading to the possibility of flash flooding. * Flash flooding of creeks, streams, urban areas, and low lying areas is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Borghoff
3 follow-up statements
750 WGUS63 KMPX 270236 FFAMPX Flood Watch National Weather Service Twin Cities/Chanhassen MN 936 PM CDT Thu Aug 26 2021 MNZ048>051-057>059-066-270345- /O.CAN.KMPX.FF.A.0002.000000T0000Z-210827T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Pope-Stearns-Benton-Sherburne-Kandiyohi-Meeker-Wright-McLeod- Including the cities of St Cloud, Willmar, Sauk Rapids, Litchfield, Hutchinson, Monticello, Glenwood, and Elk River 936 PM CDT Thu Aug 26 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of central Minnesota and west central Minnesota, including the following counties, in central Minnesota, Benton, Kandiyohi, McLeod, Meeker, Sherburne, Stearns and Wright. In west central Minnesota, Pope has been cancelled. The Flash Flood Watch is cancelled. While showers and some thunderstorms are still likely overnight, the heaviest storms are now expected to remain southeast of the area. $$ MNZ060>063-067>070-075>078-083>085-092-093-271200- /O.CON.KMPX.FF.A.0002.000000T0000Z-210827T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Hennepin-Anoka-Ramsey-Washington-Sibley-Carver-Scott-Dakota-Nicollet- Le Sueur-Rice-Goodhue-Blue Earth-Waseca-Steele-Faribault-Freeborn- Including the cities of Le Sueur, Gaylord, Red Wing, Waseca, Owatonna, Mankato, Shakopee, St Peter, Minneapolis, Victoria, Chanhassen, Faribault, Blaine, St Paul, Blue Earth, Chaska, Stillwater, Albert Lea, and Hastings 936 PM CDT Thu Aug 26 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT FRIDAY... The Flash Flood Watch continues for * Portions of central Minnesota, east central Minnesota, south central Minnesota and southeast Minnesota, including the following counties, in central Minnesota, Sibley. In east central Minnesota, Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and Washington. In south central Minnesota, Blue Earth, Faribault, Freeborn, Le Sueur, Nicollet, Rice, Steele and Waseca. In southeast Minnesota, Goodhue. * Until 7 AM CDT Friday. * Showers and thunderstorms are expected to redevelop overnight across south central and southeast Minnesota. These storms will be slow moving and capable of producing very heavy rain. Localized totals greater than 3 inches are possible, leading to the possibility of flash flooding. * Flash flooding of creeks, streams, urban areas, and low lying areas is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Borghoff
843 WGUS63 KMPX 270739 FFAMPX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Twin Cities/Chanhassen MN 239 AM CDT Fri Aug 27 2021 MNZ074-082-091-271200- /O.EXB.KMPX.FF.A.0002.210827T0800Z-210827T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Brown-Watonwan-Martin- Including the cities of Fairmont, New Ulm, and St James 239 AM CDT Fri Aug 27 2021 ...FLASH FLOOD WATCH IN EFFECT UNTIL 7 AM CDT THIS MORNING... The National Weather Service in the Twin Cities has expanded the * Flash Flood Watch to include a portion of south central Minnesota, including the following counties, Brown, Martin and Watonwan. * Until 7 AM CDT this morning. * Showers and thunderstorms are expected to continue overnight across south central and southeast Minnesota. These storms will be slow moving and capable of producing very heavy rain. Localized totals greater than 5 inches are possible across southern Minnesota, leading to the possibility of flash flooding. * Flash flooding of creeks, streams, urban areas, and low lying areas is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ MNZ060>063-067>070-075>078-083>085-092-093-271200- /O.CON.KMPX.FF.A.0002.000000T0000Z-210827T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Hennepin-Anoka-Ramsey-Washington-Sibley-Carver-Scott-Dakota-Nicollet- Le Sueur-Rice-Goodhue-Blue Earth-Waseca-Steele-Faribault-Freeborn- Including the cities of Le Sueur, Gaylord, Red Wing, Waseca, Owatonna, Mankato, Shakopee, St Peter, Minneapolis, Victoria, Chanhassen, Faribault, Blaine, St Paul, Blue Earth, Chaska, Stillwater, Albert Lea, and Hastings 239 AM CDT Fri Aug 27 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT THIS MORNING... The Flash Flood Watch continues for * Portions of central Minnesota, east central Minnesota, south central Minnesota and southeast Minnesota, including the following counties, in central Minnesota, Sibley. In east central Minnesota, Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and Washington. In south central Minnesota, Blue Earth, Faribault, Freeborn, Le Sueur, Nicollet, Rice, Steele and Waseca. In southeast Minnesota, Goodhue. * Until 7 AM CDT this morning. * Showers and thunderstorms are expected to continue overnight across south central and southeast Minnesota. These storms will be slow moving and capable of producing very heavy rain. Localized totals greater than 5 inches are possible across southern Minnesota, leading to the possibility of flash flooding. * Flash flooding of creeks, streams, urban areas, and low lying areas is possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Borghoff
843 WGUS63 KMPX 271202 FFAMPX Flood Watch National Weather Service Twin Cities/Chanhassen MN 702 AM CDT Fri Aug 27 2021 MNZ060>063-067>070-074>078-082>085-091>093-271315- /O.EXP.KMPX.FF.A.0002.000000T0000Z-210827T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Hennepin-Anoka-Ramsey-Washington-Sibley-Carver-Scott-Dakota-Brown- Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-Waseca-Steele- Martin-Faribault-Freeborn- Including the cities of Le Sueur, St Paul, Waseca, Chanhassen, Albert Lea, Gaylord, Faribault, Mankato, Shakopee, Victoria, St James, Chaska, Stillwater, St Peter, Red Wing, Hastings, Minneapolis, Fairmont, Owatonna, Blaine, New Ulm, and Blue Earth 702 AM CDT Fri Aug 27 2021 ...FLASH FLOOD WATCH HAS EXPIRED... The Flash Flood Watch for portions of central Minnesota, east central Minnesota, south central Minnesota and southeast Minnesota, including the following counties, in central Minnesota, Sibley. In east central Minnesota, Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and Washington. In south central Minnesota, Blue Earth, Brown, Faribault, Freeborn, Le Sueur, Martin, Nicollet, Rice, Steele, Waseca and Watonwan. In southeast Minnesota, Goodhue has expired. The Flood Watch has expired. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ @NWSTwinCities
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 10:39 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle, Yellow Medicine | 51 min |
| Aug 26, 10:54 AM CDT | Special Weather Statement | MPX | Stevens | 36 min |
| Aug 26, 11:05 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Swift | 40 min |
| Aug 26, 11:32 AM CDT | Special Weather Statement | MPX | Chippewa | 28 min |
| Aug 26, 11:37 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Kandiyohi, Swift | 23 min |
| Aug 26, 12:08 PM CDT | Special Weather Statement | MPX | Kandiyohi, Meeker | 22 min |
| Aug 26, 12:22 PM CDT | Special Weather Statement | MPX | Renville | 23 min |
| Aug 26, 12:25 PM CDT | Wind Advisory | MPX | Benton, Chippewa, Douglas, Kandiyohi, Lac qui Parle, Meeker and 9 more | 3 hr |
| Aug 26, 12:52 PM CDT | Special Weather Statement | MPX | McLeod | 23 min |
| Aug 26, 1:15 PM CDT | Special Weather Statement | MPX | Carver | 30 min |
| Aug 26, 1:44 PM CDT | Special Weather Statement | MPX | Carver, Hennepin | 31 min |
| Aug 26, 1:47 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 28 min |
| Aug 26, 2:05 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin, Ramsey, Scott, Washington | 40 min |
| Aug 26, 2:14 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Ramsey | 46 min |
| Aug 26, 2:44 PM CDT | Severe Thunderstorm Warning | MPX | Washington | 46 min |
| Aug 26, 2:51 PM CDT | Special Weather Statement | MPX | Washington | 24 min |
Nearby
Flash Flood Watches in Minnesota, 2021Every flash flood watch in 2021
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.