Alert archive / Wisconsin / Flash Flood Watches in 2018
Flash Flood Watch 3, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flash flood watch at Aug 19, 2018, 1:53 PM CDT for 15 counties in Wisconsin. It took effect at Aug 20, 2018, 5:00 PM CDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Aug 19, 2018, 1:53 PM CDT (18:53 UTC)
- In effect from
- Aug 20, 2018, 5:00 PM CDT
- Expired
- Aug 21, 2018, 6:41 AM CDT
- In force
- 14 hr
- Issued by
- NWS Milwaukee, WI
- Flood severity
- None
Counties Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Green County, WI, Iowa County, WI, Jefferson County, WI, Lafayette County, WI, Milwaukee County, WI, Ozaukee County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Washington County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 38 km from the middle of the area, began a volume at 18:56 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.9 hours before the alert went out and 159 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
- 803 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
823 WGUS63 KMKX 191853 FFAMKX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Milwaukee/Sullivan WI 153 PM CDT Sun Aug 19 2018 ...HEAVY RAINFALL AND POSSIBLE FLOODING BEGINNING LATE MONDAY... .Periods of moderate to heavy rainfall is forecast over southern Wisconsin for Monday afternoon into Tuesday morning. Several inches of rain may fall over sections of east central and southeast Wisconsin during this time. Flash flooding may occur especially in urban areas or areas that received several inches of rain last week. WIZ051-052-058>060-064>066-200300- /O.NEW.KMKX.FF.A.0003.180820T2200Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha- Milwaukee- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 153 PM CDT Sun Aug 19 2018 ...FLASH FLOOD WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING... The National Weather Service in Milwaukee/Sullivan has issued a * Flash Flood Watch for portions of east central Wisconsin and southeast Wisconsin, including the following areas, in east central Wisconsin, Fond Du Lac and Sheboygan. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * From Monday afternoon through Tuesday morning * Periods of moderate to heavy rainfall from late Monday afternoon into Tuesday morning. 1.5 to 2.0 inches expected but locally 2 to 4 inches or more is possible over southeast and east central Wisconsin. * Flash flooding in urban areas will be possible if 2 to 4 inches of rain or more falls in a relatively short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$
8 follow-up statements
786 WGUS63 KMKX 200203 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 903 PM CDT Sun Aug 19 2018 ...HEAVY RAINFALL AND POSSIBLE FLOODING BEGINNING LATE MONDAY... .Periods of moderate to heavy rainfall are forecast over southern Wisconsin for Monday afternoon into Tuesday morning. Several inches of rain may fall over sections of east central and southeast Wisconsin during this time. Flash flooding may occur especially in urban areas or areas that received several inches of rain last week. WIZ051-052-058>060-064>066-201015- /O.CON.KMKX.FF.A.0003.180820T2200Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha- Milwaukee- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 903 PM CDT Sun Aug 19 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY MORNING... The Flash Flood Watch continues for * Portions of east central Wisconsin and southeast Wisconsin, including the following areas, in east central Wisconsin, Fond Du Lac and Sheboygan. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * From Monday afternoon through Tuesday morning * Periods of moderate to heavy rainfall from late Monday afternoon into Tuesday morning. 1.5 to 2.0 inches expected but locally 2 to 4 inches or more is possible over southeast and east central Wisconsin. * Flash flooding in urban areas will be possible if 2 to 4 inches of rain or more falls in a relatively short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$
774 WGUS63 KMKX 200846 FFAMKX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Milwaukee/Sullivan WI 346 AM CDT Mon Aug 20 2018 ...HEAVY RAINFALL AND POSSIBLE FLOODING BEGINNING LATE MONDAY... .Periods of moderate to heavy rainfall are forecast over southern Wisconsin for this afternoon into Tuesday morning. Several inches of rain may fall over southern Wisconsin during this time. Flash flooding may occur especially in urban areas or areas that received several inches of rain last week. WIZ056-057-062-063-067>069-201700- /O.EXA.KMKX.FF.A.0003.180820T2200Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sauk-Columbia-Iowa-Dane-Lafayette-Green-Rock- Including the cities of Baraboo, Reedsburg, Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, Brodhead, Janesville, and Beloit 346 AM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH IN EFFECT FROM THIS AFTERNOON THROUGH TUESDAY MORNING... The National Weather Service in Milwaukee/Sullivan has expanded the * Flash Flood Watch to include a portion of south central Wisconsin, including the following areas, Columbia, Dane, Green, Iowa, Lafayette, Rock, and Sauk. * From this afternoon through Tuesday morning * Periods of moderate to heavy rainfall from late Monday afternoon into Tuesday morning. 1 to 3 inches of rainfall is expected but localized amounts of 4 inches or more are possible over southern Wisconsin. * Flash flooding in urban areas will be possible if 2 to 4 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$ WIZ051-052-058>060-064>066-201700- /O.CON.KMKX.FF.A.0003.180820T2200Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha- Milwaukee- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 346 AM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH TUESDAY MORNING... The Flash Flood Watch continues for * Portions of east central Wisconsin and southeast Wisconsin, including the following areas, in east central Wisconsin, Fond Du Lac and Sheboygan. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * From this afternoon through Tuesday morning * Periods of moderate to heavy rainfall from late Monday afternoon into Tuesday morning. 1 to 3 inches of rainfall is expected but localized amounts of 4 inches or more are possible over southern Wisconsin. * Flash flooding in urban areas will be possible if 2 to 4 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$
077 WGUS63 KMKX 201646 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 1146 AM CDT Mon Aug 20 2018 ...HEAVY RAINFALL AND POSSIBLE FLOODING BEGINNING LATE MONDAY... .Periods of moderate to heavy rainfall are forecast over southern Wisconsin late this afternoon into Tuesday morning. Several inches of rain may fall over southern Wisconsin during this time. Flash flooding may occur especially in urban areas or areas that received several inches of rain last week. WIZ051-052-056>060-062>069-210100- /O.CON.KMKX.FF.A.0003.180820T2200Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge-Washington-Ozaukee-Iowa- Dane-Jefferson-Waukesha-Milwaukee-Lafayette-Green-Rock- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Baraboo, Reedsburg, Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Mequon, Cedarburg, Grafton, Dodgeville, Mineral Point, Barneveld, Madison, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, Cudahy, Darlington, Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, Brodhead, Janesville, and Beloit 1146 AM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 5 PM CDT THIS AFTERNOON THROUGH TUESDAY MORNING... The Flash Flood Watch continues for * Portions of east central Wisconsin, south central Wisconsin, and southeast Wisconsin, including the following areas, in east central Wisconsin, Fond Du Lac and Sheboygan. In south central Wisconsin, Columbia, Dane, Green, Iowa, Lafayette, Rock, and Sauk. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * From 5 PM CDT this afternoon through Tuesday morning * Periods of moderate to heavy rainfall from late this afternoon into Tuesday morning. 1 to 3 inches of rainfall is expected, but localized amounts of 4 inches or more are possible over southern Wisconsin. * Flash flooding in urban areas will be possible if 2 to 4 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$ Wood
267 WGUS63 KMKX 201833 FFAMKX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Milwaukee/Sullivan WI 133 PM CDT Mon Aug 20 2018 ...HEAVY RAINFALL AND POSSIBLE FLOODING THIS AFTERNOON INTO TUESDAY MORNING... .Showers and scattered thunderstorms will move north out of northern Illinois and into southern Wisconsin this afternoon. For this evening, periods of showers and thunderstorms with heavy rainfall are expected, and may last into Tuesday morning over southeast and east central Wisconsin. Several inches of rain may fall over southern Wisconsin during this time with the heaviest totals in eastern Wisconsin. Flash flooding may occur especially in urban areas or areas that received several inches of rain last week. WIZ056-057-062-063-067>069-210245- /O.EXT.KMKX.FF.A.0003.180820T2200Z-180821T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sauk-Columbia-Iowa-Dane-Lafayette-Green-Rock- Including the cities of Baraboo, Reedsburg, Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, Brodhead, Janesville, and Beloit 133 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH NOW IN EFFECT FROM 5 PM CDT THIS AFTERNOON THROUGH LATE TONIGHT... The Flash Flood Watch is now in effect for * A portion of south central Wisconsin, including the following areas, Columbia, Dane, Green, Iowa, Lafayette, Rock, and Sauk. * From 5 PM CDT this afternoon through late tonight * Periods of moderate to heavy rainfall this afternoon into late night. 1 to 3 inches of rainfall is expected. * Flash flooding in urban areas will be possible if 1 to 3 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$ WIZ051-052-058>060-064>066-210245- /O.CON.KMKX.FF.A.0003.180820T2200Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha- Milwaukee- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 133 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 5 PM CDT THIS AFTERNOON THROUGH TUESDAY MORNING... The Flash Flood Watch continues for * Portions of east central Wisconsin and southeast Wisconsin, including the following areas, in east central Wisconsin, Fond Du Lac and Sheboygan. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * From 5 PM CDT this afternoon through Tuesday morning * Periods of moderate to heavy rainfall from late this afternoon into Tuesday morning. 1 to 3 inches of rainfall is expected, but localized amounts of 4 inches or more are possible over southeast and east central Wisconsin. * Flash flooding in urban areas will be possible if 1 to 3 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$
322 WGUS63 KMKX 202346 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 646 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT TONIGHT INTO TUESDAY... .Showers and thunderstorms will continue to deposit heavy rainfall over parts of southern Wisconsin tonight. Parts of west Madison has received between 2 and 5 inches of rainfall so far. A Flash Flood Warning remains in effect this evening for this area. Elsewhere, a Flash Flood Watch remains in effect for tonight. Occasional showers and thunderstorms will produce heavy rainfall tonight, possibly lasting into into Tuesday morning over southeast and east central Wisconsin. Several inches of additional rain may fall over southern Wisconsin during this time. Flash flooding may occur especially in urban areas or areas that received several inches of rain last week. WIZ051-052-058>060-064>066-210800- /O.CON.KMKX.FF.A.0003.000000T0000Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha- Milwaukee- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 646 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY MORNING... The Flash Flood Watch continues for * Portions of east central Wisconsin and southeast Wisconsin, including the following areas, in east central Wisconsin, Fond Du Lac and Sheboygan. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * Through Tuesday morning * Periods of moderate to heavy rainfall tonight into Tuesday morning. 1 to 3 inches of rainfall is expected, but localized amounts of 4 inches or more are possible over southeast and east central Wisconsin. * Flash flooding in urban areas will be possible if 1 to 3 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$ WIZ056-057-062-063-067>069-210800- /O.CON.KMKX.FF.A.0003.000000T0000Z-180821T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sauk-Columbia-Iowa-Dane-Lafayette-Green-Rock- Including the cities of Baraboo, Reedsburg, Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, Brodhead, Janesville, and Beloit 646 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... The Flash Flood Watch continues for * A portion of south central Wisconsin, including the following areas, Columbia, Dane, Green, Iowa, Lafayette, Rock, and Sauk. * Until 4 AM CDT Tuesday * Periods of moderate to heavy rainfall tonight. 2 to 4 inches of rainfall is expected with locally higher amounts. * Flash flooding in urban areas will be possible if 1 to 3 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$ MBK
770 WGUS63 KMKX 210240 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 940 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT TONIGHT INTO TUESDAY... .Showers and thunderstorms will continue to deposit heavy rainfall over parts of southern Wisconsin through late tonight. Parts of western Dane County including parts of Middleton and Cross Plains have received between 4 and 9 inches of heavy rainfall since the late afternoon. A Flash Flood Watch remains in effect tonight. Periods of showers and thunderstorms will continue to produce heavy rainfall tonight, possibly lasting into Tuesday morning over southeast and east central Wisconsin. Several inches of additional rain may fall over southern Wisconsin during this time. Flash flooding may occur especially in urban areas or areas that received several inches of rain last week. WIZ051-052-058>060-064>066-211045- /O.CON.KMKX.FF.A.0003.000000T0000Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Dodge-Washington-Ozaukee-Jefferson-Waukesha- Milwaukee- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Mequon, Cedarburg, Grafton, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 940 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 9 AM CDT TUESDAY... The Flash Flood Watch continues for * Portions of east central Wisconsin and southeast Wisconsin, including the following areas, in east central Wisconsin, Fond Du Lac and Sheboygan. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * Until 9 AM CDT Tuesday * Periods of moderate to heavy rainfall tonight into Tuesday morning. 1 to 3 inches of rainfall is expected, but localized amounts of 4 inches or more are possible over southeast and east central Wisconsin. * Flash flooding in urban areas will be possible if 1 to 3 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$ WIZ056-057-062-063-067>069-210900- /O.CON.KMKX.FF.A.0003.000000T0000Z-180821T0900Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sauk-Columbia-Iowa-Dane-Lafayette-Green-Rock- Including the cities of Baraboo, Reedsburg, Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin, Lodi, Dodgeville, Mineral Point, Barneveld, Madison, Darlington, Shullsburg, Benton, Belmont, Argyle, Blanchardville, Monroe, Brodhead, Janesville, and Beloit 940 PM CDT Mon Aug 20 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 4 AM CDT TUESDAY... The Flash Flood Watch continues for * A portion of south central Wisconsin, including the following areas, Columbia, Dane, Green, Iowa, Lafayette, Rock, and Sauk. * Until 4 AM CDT Tuesday * Periods of moderate to heavy rainfall tonight. 2 to 4 inches of rainfall is expected with locally higher amounts of 4 to 9 inches, especially in western Dane County. * Flash flooding in urban areas will be possible if 1 to 3 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain last week. 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. && $$ MBK
159 WGUS63 KMKX 210940 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 440 AM CDT Tue Aug 21 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT FOR MILWAUKEE AND OZAUKEE COUNTIES... .The threat for flash flooding is diminishing across parts of southeast Wisconsin. The flash flood warning will continue for Ozaukee and Milwaukee counties due to some persistent rain lingering in that area. That rain is just off shore over Lake Michigan, but could back up to the west into those counties for a few hours. Look for the rain to then gradually diminish from west to east across southern Wisconsin this morning. WIZ051-052-058-059-064-065-211045- /O.CAN.KMKX.FF.A.0003.000000T0000Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Fond Du Lac-Sheboygan-Dodge-Washington-Jefferson-Waukesha- Including the cities of Fond Du Lac, Plymouth, Sheboygan Falls, Howards Grove, Oostburg, Beaver Dam, Waupun, Mayville, West Bend, Germantown, Hartford, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, and Muskego 440 AM CDT Tue Aug 21 2018 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of east central Wisconsin and southeast Wisconsin has been cancelled. $$ WIZ060-066-211400- /O.CON.KMKX.FF.A.0003.000000T0000Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ozaukee-Milwaukee- Including the cities of Mequon, Cedarburg, Grafton, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 440 AM CDT Tue Aug 21 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... The Flash Flood Watch continues for * A portion of southeast Wisconsin, including the following areas, Milwaukee and Ozaukee. * Until 9 AM CDT this morning * Occasional moderate to heavy rainfall is possible into the mid morning hours. Very localized 1 inch amounts are possible. This would occur on top of 1 to 2 inches of rain that fell yesterday and overnight. * Flash flooding in urban areas will be possible if an addition 1 inch of rain or more falls in a short period of time. 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. && $$
229 WGUS63 KMKX 211141 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 641 AM CDT Tue Aug 21 2018 WIZ060-066-211245- /O.CAN.KMKX.FF.A.0003.000000T0000Z-180821T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Ozaukee-Milwaukee- Including the cities of Mequon, Cedarburg, Grafton, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 641 AM CDT Tue Aug 21 2018 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for a portion of southeast Wisconsin has been cancelled. The heavy rain threat has ended across Ozaukee and Milwaukee counties. $$
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Milwaukee, WI wrote its last area forecast discussion before this flash flood watch went out at Aug 19, 12:51 PM CDT, 1 hour 2 minutes earlier.
Area forecast discussion, Aug 19, 12:51 PM CDT, 1 hour 2 minutes before
Area Forecast Discussion...UPDATED National Weather Service Milwaukee/Sullivan WI 1251 PM CDT Sun Aug 19 2018 .UPDATE... The forecast looks on track for this afternoon and tonight. && .AVIATION(18Z TAFS)... Scattered to broken diurnal cumulus clouds are expected to linger this afternoon, with any ceilings gradually lifting above 3000 feet by later this afternoon. These clouds should dissipate early this evening. Light winds are expected, with an east southeast lake breeze near Lake Michigan. Middle to high clouds will gradually push eastward into the area tonight into Monday morning. East southeast winds tonight will gradually increase Monday. Any fog will be limited to the river valleys and low lying areas, as the clouds and winds should limit the extent of the fog. First band of showers and some thunderstorms should push northeast into the area Monday afternoon, reaching Madison by 19Z Monday, and the eastern terminals by 22Z Monday. Ceilings and visibility values will drop to IFR category or lower in any thunderstorms. Heavy rainfall is possible as well. The showers/storms and possible heavy rainfall should linger Monday evening, before slowly ending from west to east later Monday night into Tuesday morning. Winds should back to the north by later Monday night, before becoming gusty Tuesday. && .PREV DISCUSSION... (Issued 1029 AM CDT Sun Aug 19 2018) UPDATE... Allowed the Dense Fog Advisory to end at 9 AM CDT across portions of the area. There may still be patchy dense fog toward the Reedsburg and Wisconsin Dells areas for another hour or two. Otherwise, any lingering fog will mix out with daytime heating by early this afternoon. Diurnal cumulus clouds should be scattered to broken into this afternoon, as daytime heating increases. Winds will east to southeast into the afternoon near Lake Michigan. Highs should reach the lower 80s inland, with slightly cooler values near the lake. May see patchy fog later tonight, though it should not be as widespread as this morning, with middle to high clouds moving into the region. Still looks like there will be a good shot at heavy rainfall across portions of the area Monday afternoon into Monday night. Latest CAMs suggest that convection will pivot across southern and eastern parts of the area during this period. High precipitable water values, with moist adiabatic and saturated forecast soundings, will bring a favorable heavy rainfall and possible flooding/flash flooding setup. Some of this may occur over parts of the area that already has seen flooding and heavy rainfall from last Thursday and Friday. Will consider parts of the area for a Flood Watch for Monday afternoon/night. MARINE... Light east to southeast winds are expected into this afternoon across the nearshore waters of Lake Michigan. Waves will be light, generally 1 foot or less. Onshore winds will increase later tonight into Monday night, before backing north early Tuesday morning. Gusty north to northwest winds are then expected Tuesday into Tuesday night, before weakening, with low pressure passing by to the south. This period will see increasing waves, into the 2 to 4 foot range Monday, and 3 to 5 feet Monday night. Waves should remain in the 3 to 6 foot range Tuesday into Tuesday night, highest toward the open waters of Lake Michigan. A Small Craft Advisory will likely be needed for Monday night into Tuesday night. PREV DISCUSSION... (Issued 628 AM CDT Sun Aug 19 2018) UPDATE... Fog continues across the central portion of the forecast area. This should dissipate quite rapidly between 8 and 9 AM. AVIATION(12Z TAFS)... Dense fog will remain a concern for another hour or two at the terminals, with the exception of KMKE, where fog has stayed to the west. Fog is expected to dissipate rather quickly between 8 and 9 AM, with VFR then expected for the rest of the day. Winds will increase from the east and southeast this evening into the overnight hours, as low pressure approaches from the west. A few gusts will be possible at MKE, with a steady breeze elsewhere. Precipitation will begin to move toward the area tomorrow morning, but the terminals should remain dry until after 12Z. PREV DISCUSSION... (Issued 246 AM CDT Sun Aug 19 2018) DISCUSSION... Early this Morning through Tonight...Forecast Confidence is High... Fog is again a concern this morning across the area. Fog is fairly widespread as of 2 AM, but visibilities have been somewhat variable, ranging from 1 to 2 miles to a 1/4 mile. Will continue to keep an eye on vis trends and potential need for a Dense Fog Advisory at some point. Fog will lift within a few hours of sunrise, with today likely to be quite similar to yesterday, with highs around 80. Southeast winds will start to increase this evening, continuing through the overnight hours as low pressure deepens to our west. Precipitation will start to move into the far southwestern edge of the forecast area around sunrise Monday morning. Monday through Tuesday - Confidence...Medium Closed 500 millibar low vicinity of Omaha or just south is proggd to open into a more progressive wave as it heads east/northeast this period passing east of the area early Tuesday. Considerable moisture will advect north/northwestward ahead of the low in the amplifying thermal ridge area/warm conveyor belt region ahead f the advancing low. This in combo with increasing dcva with the advancing mid level trough will lead to widespread rain and thunderstorms. A modest upper jet is proggd ahead of the low with enhanced divergence within this left exit region later Monday into Monday evening. Still looks like a decent amount of rain with this system as appreciable cyclogenesis tracks across or just south of se WI. The GFS which had been a much weaker and further south solution has really joined forces with the earlier advertised track/strength of the GEM/ECMWF with the consensus pointing to this low tracking through the extreme southeast WI/extreme northeast Illinois vicinity. Progs still keying on Monday afternoon into at least parts of Monday night for the heaviest precip potential. This system has the look of a classic low scenario with the initial waa/most advection surge with the laying out of a def zone band of rain, potentially heavy, on the nw side, which could set up across parts of the cwa and potentially add to the woes of areas already hit by heavier rains this past Friday. A little early to zero in on exactly where that band sets up but could see where eventually a surgical type FFA could come into play focusing on portions of the interior of the cwa that got hit hard Friday. As the low heads east Tuesday would expect any lingering rain to gradually wind down. Overall a cloudy, damp and breezy period is shaping up with some hefty rain totals looking likely for parts of the cwa. Tuesday night through Thursday night - Confidence...Medium Expecting a prolonged quiet period as ridging builds in. We'll get back to some warming temps again as the high clears to the east by about Thursday and a return flow sets up. Pattern is suggesting any precip with next system will stay to our west or northwest. Friday through Saturday - Confidence...Low to Medium Models are showing a shortwave trough that would move through Friday afternoon or Friday night. This is faster than the prior run. An ssw 850 jet is proggd to increase moisture ahead of this trough and there would be appreciable upper dynamics in play to support a potential round of shra/tsra Friday or Friday night. Models may still bounce around on the details of this so for now will just ride with the blended guidance. Looks like some pretty warm air is poised to return late in this period and beyond. AVIATION(09Z TAFS)...IFR ceilings and visibility will be the main concern this morning, with areas of fog and stratus across the region. Conditions should improve within a few hours of sunrise. VFR is expected today, with east to southeast winds. Winds will start to increase this evening, as low pressure deepens to the west. Some gustiness will be possible, especially at KMKE, where winds will be coming right off of Lake Michigan. MARINE...Quiet conditions are expected through the daytime hours today. Southeast to east winds will increase later this evening into tonight, as low pressure develops and approaches from the west. 15 to 20 knot gusts are expected overnight into Monday, with waves building to 2-3 feet by Monday morning. North winds then increase early Tuesday as the surface low pulls east of the area. 20-25 knot gusts are expected for much of the day Tuesday, with waves increasing to 3-5 feet, especially near open waters. A Small Craft Advisory will likely be needed for this timeframe. BEACHES...Onshore flow will increase later tonight, with 2-3 foot waves along the Wisconsin shoreline Monday night. Elevated winds and waves will then continue through the day Tuesday, as winds become gusty from the north. Increased winds and waves will result in a risk for rip currents and strong structural currents. && .MKX WATCHES/WARNINGS/ADVISORIES... WI...None. LM...None. && Update...Wood Today/Tonight and Aviation/Marine...Boxell Monday THROUGH Saturday...Collar
Hazardous weather outlook, Aug 19, 10:08 AM CDT, 3 hours 45 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Milwaukee/Sullivan WI 1008 AM CDT Sun Aug 19 2018 WIZ046-047-051-052-056>060-062>072-201515- Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green-Rock-Walworth-Racine-Kenosha- 1008 AM CDT Sun Aug 19 2018 This Hazardous Weather Outlook is for portions of east central Wisconsin, south central Wisconsin and southeast Wisconsin. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday More heavy rainfall and thunderstorms are possible from Monday into Tuesday, as another low pressure area moves through the region. There is a potential for flash flooding in urban areas, and rural areas that have received several inches of rain the past few days. There is a chance of thunderstorms Friday and Friday night. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed, but rainfall and flooding reports are appreciated. LMZ643>646-201515- Sheboygan to Port Washington WI- Port Washington to North Point Light WI- North Point Light to Wind Point WI- Wind Point WI to Winthrop Harbor IL- 1008 AM CDT Sun Aug 19 2018 This Hazardous Weather Outlook is for portions of Lake Michigan. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday There are chances of thunderstorms Monday afternoon into Tuesday morning. A Small Craft Advisory will likely be needed later Monday into Tuesday, as a low pressure system moves through the area. Wood www.weather.gov/mkx
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 4:22 AM CDT | Dense Fog Advisory | MKX | Columbia, Dane, Dodge, Fond du Lac, Iowa, Jefferson and 5 more | 5 hr |
| Aug 19, 4:16 PM CDT | Beach Hazards Statement | MKX | Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan | 59 hr |
Nearby
Flash Flood Watches in Wisconsin, 2018Every flash flood watch in 2018
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.