Alert archive / Wisconsin / Flash Flood Watches in 2018
Flash Flood Watch 4, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flash flood watch at Aug 27, 2018, 11:45 AM CDT for 16 counties in Wisconsin. It took effect at Aug 28, 2018, 1:00 AM CDT. It was in force for 22 hr.
The area
The counties it named.
The facts
- Issued
- Aug 27, 2018, 11:45 AM CDT (16:45 UTC)
- In effect from
- Aug 28, 2018, 1:00 AM CDT
- Expired
- Aug 28, 2018, 10:47 PM CDT
- In force
- 22 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, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Sauk County, WI, Sheboygan County, WI, Washington County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 48 km from the middle of the area, began a volume at 16:48 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, 4.8 hours before the alert went out and 148 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
- 193 J/kg
- Mixed-layer CIN
- -140 J/kg
- Mixed-layer LCL
- 922 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted.
522 WGUS63 KMKX 271645 FFAMKX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Milwaukee/Sullivan WI 1145 AM CDT Mon Aug 27 2018 ...FLASH FLOOD WATCH FOR LATE TONIGHT THROUGH WEDNESDAY MORNING... WIZ046-047-051-052-056>060-063>066-280045- /O.NEW.KMKX.FF.A.0004.180828T0600Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Dane-Jefferson-Waukesha-Milwaukee- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, 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, Madison, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 1145 AM CDT Mon Aug 27 2018 ...FLASH FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... The National Weather Service in Milwaukee/Sullivan has issued a * Flash Flood Watch 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 Lake, Marquette, and Sauk. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * From late tonight through Wednesday morning * Periods of heavy rain are possible tonight and Tuesday night. Total rainfall amounts of 1 to 3 inches are expected, but localized amounts of 4 inches or more are possible toward 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 this past 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. && $$ Cronce
6 follow-up statements
137 WGUS63 KMKX 272101 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 401 PM CDT Mon Aug 27 2018 ...FLASH FLOOD WATCH FOR LATE TONIGHT THROUGH WEDNESDAY MORNING... WIZ046-047-051-052-056>060-063>066-280515- /O.CON.KMKX.FF.A.0004.180828T0600Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Dane-Jefferson-Waukesha-Milwaukee- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, 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, Madison, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 401 PM CDT Mon Aug 27 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 1 AM CDT TUESDAY THROUGH WEDNESDAY 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 Lake, Marquette, and Sauk. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * From 1 AM CDT Tuesday through Wednesday morning * Periods of heavy rain are possible tonight and again Tuesday afternoon and night. Total rainfall amounts of 1 to 3 inches are expected, but localized amounts of 4 inches or more are possible. * 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 this past 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. && $$ Cronce
870 WGUS63 KMKX 280849 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 349 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH FOR TODAY THROUGH WEDNESDAY MORNING... WIZ046-047-051-052-056>060-063>066-281700- /O.CON.KMKX.FF.A.0004.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Dane-Jefferson-Waukesha-Milwaukee- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, 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, Madison, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 349 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY 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 Lake, Marquette, and Sauk. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * Through Wednesday morning * Periods of heavy rain will come to an end this morning. But strong to severe thunderstorms will bring periods of heavy rain from middle to late afternoon through the night. Total rainfall amounts of 1 to 3 inches are expected, but localized amounts of 4 inches or more are possible. * 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 this past 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. && $$
392 WGUS63 KMKX 281026 FFAMKX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Milwaukee/Sullivan WI 526 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH FOR TODAY THROUGH WEDNESDAY MORNING... WIZ062-067-281830- /O.EXA.KMKX.FF.A.0004.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Iowa-Lafayette- Including the cities of Dodgeville, Mineral Point, Barneveld, Darlington, Shullsburg, Benton, Belmont, Argyle, and Blanchardville 526 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING... The National Weather Service in Milwaukee/Sullivan has expanded the * Flash Flood Watch to include a portion of south central Wisconsin, including the following areas, Iowa and Lafayette. * Through Wednesday morning * Strong to severe thunderstorms will bring periods of heavy rain from middle to late afternoon through the night. Total rainfall amounts of 1 to 3 inches are expected, but localized amounts of 4 inches or more are possible. * Flash flooding in urban areas and in hilly rural areas will be possible if 2 to 3 inches of rain or more falls in a short period of time. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ WIZ046-047-051-052-056>060-063>066-281830- /O.CON.KMKX.FF.A.0004.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Dane-Jefferson-Waukesha-Milwaukee- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, 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, Madison, Watertown, Fort Atkinson, Jefferson, Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego, West Allis, Wauwatosa, Greenfield, Franklin, Oak Creek, South Milwaukee, and Cudahy 526 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY 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 Lake, Marquette, and Sauk. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * Through Wednesday morning * Periods of heavy rain will come to an end this morning. But strong to severe thunderstorms will bring periods of heavy rain from middle to late afternoon through the night. Total rainfall amounts of 1 to 3 inches are expected, but localized amounts of 4 inches or more are possible. * 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 this past 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. && $$
281 WGUS63 KMKX 281335 FFAMKX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Milwaukee/Sullivan WI 835 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH FOR TODAY THROUGH WEDNESDAY MORNING... WIZ068-282145- /O.EXA.KMKX.FF.A.0004.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Green- Including the cities of Monroe and Brodhead 835 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH IN EFFECT THROUGH WEDNESDAY MORNING... The National Weather Service in Milwaukee/Sullivan has expanded the * Flash Flood Watch to include a portion of south central Wisconsin, including the following area, Green. * Through Wednesday morning * More rounds of thunderstorms will bring periods of heavy rain from middle to late afternoon through the night. Total rainfall amounts of 1 to 3 inches are expected, but localized amounts of 4 inches or more are possible. * Flash flooding in urban areas will be possible if 1 to 3 inches of rain or more falls in a short period of time. Flash flooding will be possible in rural areas that have already received several inches of rain this past week. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flash Flood Watch means that conditions may develop that lead to flash flooding. Flash flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ WIZ046-047-051-052-056>060-062>067-282145- /O.CON.KMKX.FF.A.0004.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, 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, and Blanchardville 835 AM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY 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 Lake, Iowa, Lafayette, Marquette, and Sauk. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * Through Wednesday morning * More rounds of thunderstorms will bring periods of heavy rain from middle to late afternoon through the night. Total rainfall amounts of 1 to 3 inches are expected, but localized amounts of 4 inches or more are possible. * 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 this past 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. && $$ Cronce
739 WGUS63 KMKX 290207 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 907 PM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH CONTINUES THROUGH WEDNESDAY MORNING... WIZ046-047-051-052-056>060-062>068-291015- /O.CON.KMKX.FF.A.0004.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, 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, and Brodhead 907 PM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT WEDNESDAY... 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, Green Lake, Iowa, Lafayette, Marquette, and Sauk. In southeast Wisconsin, Dodge, Jefferson, Milwaukee, Ozaukee, Washington, and Waukesha. * Until 7 AM CDT Wednesday * Steady rains will continue across the area into a few hours after midnight or so. Areas that have received heavy rains and major flooding of late are not expected to see additional appreciable rains this evening, however another 0.25 to 0.75 is plausible to occur overnight with this rain area and some isolated thunder. And this may be enough to complicate the flooding situation, so will continue to keep this watch in place. 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. && $$
613 WGUS63 KMKX 290347 FFAMKX Flood Watch National Weather Service Milwaukee/Sullivan WI 1047 PM CDT Tue Aug 28 2018 WIZ046-047-051-052-056>060-062>068-290500- /O.CAN.KMKX.FF.A.0004.000000T0000Z-180829T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green- Including the cities of Montello, Westfield, Oxford, Neshkoro, Endeavor, Berlin, Princeton, Markesan, 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, and Brodhead 1047 PM CDT Tue Aug 28 2018 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of east central Wisconsin, south central Wisconsin, and southeast Wisconsin has been cancelled. Although we will continue to see some steady light rain over the next few hours, the threat for any new flash flooding has ended. $$
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 27, 6:20 AM CDT, 5 hours 25 minutes earlier.
Area forecast discussion, Aug 27, 6:20 AM CDT, 5 hours 25 minutes before
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
620 AM CDT Mon Aug 27 2018
.UPDATE...Expect scattered showers and a few storms to spread back
into south central WI next several hours associated with upstream
short wave over central IA. Will need to watch those temperatures
closely in the far south. May get into the lower 90s, increasing
the liklihood of Heat Index values higher than 100 for several
hours.
&&
.AVIATION(12Z TAFS)...Mainly VFR conditions with scattered showers
and a few storms redeveloping this morning. Briefly lower
ceilings and visibilities with any showers and storms.
&&
.PREV DISCUSSION... (Issued 332 AM CDT Mon Aug 27 2018)
SHORT TERM...
TODAY AND TONIGHT - Confidence...Medium.
Expect deeper convection over northeast CWA to continue to diminish
as strongest push of moisture convergence associated with low level
jet pivots to the northeast. However upstream short wave over IA
and weaker warm air and moisture convection along with lingering
MUCape above 2K joules, should continue to generate scattered
convection across the area through the morning. See below hydrology
section for heavy rainfall discussion. Warm front over central CWA
is expected to shift northward this morning, resulting in a warm and
humid day. The majority of the precipitation is expected to end
later this morning with dry conditions expected most of the
afternoon. Low level jet re-energizes late this afternoon and
tonight over WI with the strongest low level convergence well north
of the area. All the short term guidance focuses the heavy
rainfall across central WI tonight, but NAM is showing stronger
frontogenetical forcing and Q-vector convergence spreading south
into southern WI during the night. Also, Corfidi Vectors and MBE
Velocity/track would carry activity into southern WI overnight. As
mentioned below, due to considerable uncertainty of heavy rainfall
location, held off on Flash Flood Watch in CWA. Did keep likely
pops and higher across northern CWA for tonight.
LONG TERM...
Tuesday and Wednesday...Forecast confidence is medium to high:
A warm, unstable, and very moist airmass will remain in place
across southern Wisconsin through Tuesday. Precipitable water
values are forecast to be around 2 inches, which is twice the
average for late August.
High confidence for widespread storms later Tuesday into Tuesday
night as the trough and associated cold front move through.
Severe thunderstorms and heavy rainfall will be possible once
again.
Could see a wave move through early Wednesday, with a few more
showers/storms possible before high pressure moves into the area.
There should be some sunshine by afternoon. It will be
considerably cooler Wednesday, with highs struggling to around 70
degrees.
Thursday through Sunday...Forecast confidence is medium to
high:
High pressure is expected to be in place for Thursday into Friday,
bringing dry weather, lower humidity, plenty of sunshine, and
pleasant temperatures in the 70s.
Moisture is expected to return later Friday into Saturday as
southerly low level flow develops on the back side of departing
high pressure. This will allow for a return of shower/storm
chances for this period.
High pressure will then return for Sunday, with plenty of sunshine
and near normal temperatures likely.
AVIATION (09Z TAFS)...Mostly VFR conditions are expected, but may
be patchy lower clouds around for a time this morning associated
with scattered convection. Mixiness in boundary layer winds should
prevent fog development.
MARINE...Warm front over southern Lake Michigan extending into
southern WI is expected to lift northward into northern Lake MI this
morning as scattered convection diminishes. This will result in
surface winds becoming more southerly. A low level temperature
inversion should continue to prevent strongest winds from mixing
down to the lake surface away from the shore. However gusty
southwest winds over the shore areas will affect western parts of
the near shore waters. Gusts up to 25 knots are expected, so wl be
posting a Small Craft Advisory in effect from mid-morning through
Tuesday. Early morning convection may yet produce strong winds up
to 40 kts at the lake surface, especially closer to shore. Areas of
fog will continue in the northern zone for a time this morning until
winds turn to the south to southwest.
HYDROLOGY...Heaviest rainfall since Sunday afternoon has been
focused over Columbia County east to northern Milwaukee and Ozaukee
county including Washington and Dodge counties. Radar estimated,
confirmed by surface observations show 2 to 4 inches has fallen so
far, as of 08Z. Areas of flooding recently reported in parts of
Ozaukee county. The convection is waning over this area as low
level jet pivots to the southwest, pushing better convergence over
Lake Michigan. However upstream mid-level short wave and weaker
moisture convergence will keep scattered activity around this
morning. Differences in short term guidance in potential for heavy
rainfall location across central and southern WI tonight. GFS/ECMWF
focuses north of CWA. NAM also shows QPF axis to the north, but yet
has stronger synoptic lift spreading into northern CWA tonight. Due
to differences, will hold off on issuing Flash Flood Watch for
tonight into Tuesday.
BEACHES...Gusty southwest surface winds are expected to
develop this morning along the shore, while more south winds are
expected offshore. Wind gusts up to 25 knots will be possible,
however due to the offshore component, the swim risk will remain low
to moderate with 1 to 4 foot waves at the beach today.
&&
.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Small Craft Advisory from 10 AM this morning to 7 PM CDT Tuesday
for LMZ643>646.
&&
Update...MBK
Today/Tonight and Aviation/Marine...MBK
Tuesday THROUGH Sunday...MBKHazardous weather outlook, Aug 27, 6:32 AM CDT, 5 hours 13 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Milwaukee/Sullivan WI 632 AM CDT Mon Aug 27 2018 WIZ046-047-051-052-056>060-062>072-281145- Marquette-Green Lake-Fond Du Lac-Sheboygan-Sauk-Columbia-Dodge- Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee- Lafayette-Green-Rock-Walworth-Racine-Kenosha- 632 AM CDT Mon Aug 27 2018 This Hazardous Weather Outlook is for portions of east central Wisconsin, south central Wisconsin and southeast Wisconsin. .DAY ONE...Today and Tonight Scattered thunderstorms are expected this morning over south central Wisconsin. No severe weather is expected. Thunderstorms will develop in the area again later today into tonight. There remains some uncertainty if these storms will effect southern Wisconsin. If they do, severe storms and heavy rainfall will be possible tonight. Heat index values will reach the middle to upper 90s today, possibly hitting 100 in southeast Wisconsin. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Additional rounds of thunderstorms are likely later Tuesday into Wednesday morning. There will be a threat for severe thunderstorms and heavy rainfall once again. The possible heavy rain will result in a risk for flooding, especially for areas that have seen very heavy rain over the last week. Heat index values may reach the middle 90s on Tuesday. A chance for thunderstorms will return for Friday night and Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed tonight. LMZ643>646-281145- 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- 632 AM CDT Mon Aug 27 2018 This Hazardous Weather Outlook is for portions of Lake Michigan. .DAY ONE...Today and Tonight Areas of dense fog will reduce the visibility to one mile or less for a time this morning from Port Washington to Sheboygan. A Dense Fog Advisory is in effect until 10 am this morning for this area. A Small Craft Advisory goes into effect at 10 am for gusty southwest winds. Thunderstorms are likely through early morning. Storms will then develop in the area again later today into tonight. There remains some uncertainty if these storms will effect the nearshore waters of southern Wisconsin. If they do, severe thunderstorms will be possible tonight. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday The Small Craft Advisory will be in effect through early Tuesday evening due to persistent gusty southwest winds. Additional rounds of thunderstorms are likely later Tuesday into Wednesday morning. There will be a threat for severe thunderstorms once again. A chance for thunderstorms will return for Friday night and Saturday. www.weather.gov/mkx MBK
In the hours before
Local storm report, Aug 27, 8:32 AM CDT, 3 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
832 AM CDT MON AUG 27 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0732 AM HEAVY RAIN 1 W ALLENTON 43.42N 88.35W
08/27/2018 M5.52 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
&&Local storm report, Aug 27, 8:33 AM CDT, 3 hours 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
833 AM CDT MON AUG 27 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY RAIN 1 E BEAVER DAM 43.46N 88.81W
08/27/2018 M3.60 INCH DODGE WI CO-OP OBSERVER
WWTP.
&&Local storm report, Aug 27, 8:51 AM CDT, 2 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
851 AM CDT MON AUG 27 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0720 AM HEAVY RAIN 4 W RICHFIELD 43.23N 88.32W
08/27/2018 M5.00 INCH WASHINGTON WI PUBLIC
&&Local storm report, Aug 27, 9:32 AM CDT, 2 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
932 AM CDT MON AUG 27 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0802 AM HEAVY RAIN 1 E GRAFTON 43.32N 87.94W
08/27/2018 M5.43 INCH OZAUKEE WI PUBLIC
0800 AM HEAVY RAIN 1 E BEAVER DAM 43.46N 88.81W
08/27/2018 M3.60 INCH DODGE WI CO-OP OBSERVER
WWTP.
0742 AM HEAVY RAIN 2 WSW GERMANTOWN 43.23N 88.15W
08/27/2018 M3.02 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0741 AM HEAVY RAIN 1 WNW RICHFIELD 43.24N 88.26W
08/27/2018 M3.06 INCH WASHINGTON WI CO-OP OBSERVER
0741 AM HEAVY RAIN SLINGER 43.33N 88.28W
08/27/2018 M4.28 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0734 AM HEAVY RAIN 2 WNW HOWARDS GROVE 43.84N 87.86W
08/27/2018 M5.20 INCH SHEBOYGAN WI PUBLIC
0732 AM HEAVY RAIN 1 W ALLENTON 43.42N 88.35W
08/27/2018 M5.52 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0730 AM HEAVY RAIN 1 ESE HARTFORD 43.32N 88.38W
08/27/2018 M4.60 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0720 AM HEAVY RAIN 4 W RICHFIELD 43.23N 88.32W
08/27/2018 M5.00 INCH WASHINGTON WI PUBLIC
0715 AM HEAVY RAIN 1 ENE SAUKVILLE 43.39N 87.93W
08/27/2018 M6.90 INCH OZAUKEE WI CO-OP OBSERVER
WWTP.
0715 AM HEAVY RAIN 1 SSW WEST BEND 43.41N 88.19W
08/27/2018 M5.46 INCH WASHINGTON WI PUBLIC
0715 AM HEAVY RAIN 1 ENE OOSTBURG 43.63N 87.78W
08/27/2018 M3.25 INCH SHEBOYGAN WI CO-OP OBSERVER
WWTP.
0715 AM HEAVY RAIN 1 SSE GERMANTOWN 43.23N 88.11W
08/27/2018 E2.85 INCH WASHINGTON WI PUBLIC
0700 AM HEAVY RAIN 1 NE KEWASKUM 43.53N 88.22W
08/27/2018 M7.50 INCH WASHINGTON WI PUBLIC
RELAYED FROM BROADCAST MEDIA.
0600 AM HEAVY RAIN 3 E ALLENTON 43.42N 88.28W
08/27/2018 M4.75 INCH WASHINGTON WI TRAINED SPOTTER
0400 AM HEAVY RAIN 1 S PORT WASHINGTON 43.38N 87.88W
08/27/2018 M9.18 INCH OZAUKEE WI TRAINED SPOTTER
0330 AM HEAVY RAIN 2 W WEST BEND 43.42N 88.22W
08/27/2018 M7.25 INCH WASHINGTON WI PUBLIC
RELAYED VIA BROADCAST MEDIA.
0300 AM HEAVY RAIN PORT WASHINGTON 43.39N 87.87W
08/27/2018 M8.50 INCH OZAUKEE WI TRAINED SPOTTER
0300 AM HEAVY RAIN 1 SE THIENSVILLE 43.23N 87.96W
08/27/2018 M4.00 INCH OZAUKEE WI BROADCAST MEDIA
0230 AM FLASH FLOOD WEST BEND 43.42N 88.18W
08/27/2018 WASHINGTON WI LAW ENFORCEMENT
MANY STREETS FLOODED WITH 12 TO 18 INCHES OF
WATER.
0230 AM FLASH FLOOD JACKSON 43.33N 88.16W
08/27/2018 WASHINGTON WI LAW ENFORCEMENT
FLASH FLOODING OF SOME STREETS IN THE
JACKSON AREA.
0230 AM FLASH FLOOD GRAFTON 43.32N 87.95W
08/27/2018 OZAUKEE WI LAW ENFORCEMENT
STREET FLOODING IN GRAFTON, SAUKVILLE AND
PORT WASHINGTON.
0225 AM HEAVY RAIN JACKSON 43.32N 88.16W
08/27/2018 M2.76 INCH WASHINGTON WI CO-OP OBSERVER
0225 AM HEAVY RAIN 1 ESE WEST BEND 43.42N 88.17W
08/27/2018 M2.94 INCH WASHINGTON WI PUBLIC
0225 AM HEAVY RAIN BROWN DEER 43.18N 87.97W
08/27/2018 M2.74 INCH MILWAUKEE WI PUBLIC
0225 AM HEAVY RAIN 3 E LOMIRA 43.59N 88.38W
08/27/2018 M2.08 INCH FOND DU LAC WI PUBLIC
0225 AM HEAVY RAIN 3 W CEDARBURG 43.30N 88.05W
08/27/2018 M3.76 INCH OZAUKEE WI PUBLIC
0225 AM HEAVY RAIN 4 WNW WEST BEND 43.45N 88.26W
08/27/2018 M2.46 INCH WASHINGTON WI PUBLIC
1200 AM HEAVY RAIN GERMANTOWN 43.24N 88.12W
08/27/2018 M3.95 INCH WASHINGTON WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 3 W BROWN DEER 43.17N 88.04W
08/27/2018 M2.95 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 2 NNE MENOMONEE FALLS 43.18N 88.10W
08/27/2018 M2.29 INCH WAUKESHA WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 2 ESE CEDARBURG 43.28N 87.94W
08/27/2018 M3.14 INCH OZAUKEE WI PUBLIC
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN PORT WASHINGTON 43.39N 87.88W
08/27/2018 M2.20 INCH OZAUKEE WI BROADCAST MEDIA
1200 AM HEAVY RAIN MEQUON 43.23N 87.99W
08/27/2018 M3.40 INCH OZAUKEE WI BROADCAST MEDIA
1200 AM HEAVY RAIN 1 N GLENDALE 43.14N 87.93W
08/27/2018 M3.56 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 1 SSE MILWAUKEE 43.02N 87.90W
08/27/2018 M2.26 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 4 NW MILWAUKEE 43.08N 87.96W
08/27/2018 M2.41 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 3 ENE BUTLER 43.13N 88.01W
08/27/2018 M3.34 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 3 S MILWAUKEE 43.00N 87.91W
08/27/2018 M2.22 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 2 SW GLENDALE 43.12N 87.95W
08/27/2018 M3.19 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1145 PM FLASH FLOOD 1 S MEQUON 43.23N 87.98W
08/26/2018 OZAUKEE WI LAW ENFORCEMENT
INTERSECTION OF CEDARBURG ROAD AND DIVISION
STREET CLOSED DUE TO FLOODING. A FEW OTHER
INTERSECTIONS IN MEQUON ALSO ARE FLOODED.
1125 PM FLASH FLOOD 2 SW WHITEFISH BAY 43.09N 87.94W
08/26/2018 MILWAUKEE WI BROADCAST MEDIA
STALLED VEHICLES IN FLOODED INTERSECTION OF
TEUTONIA AVENUE AND CAPITOL DRIVE. MORE
FLOODING AT INTERSECTION OF 20TH STREET AND
CAPITOL DRIVE.
1045 PM TSTM WND DMG 1 S OCONOMOWOC 43.08N 88.50W
08/26/2018 WAUKESHA WI LAW ENFORCEMENT
NUMEROUS TREES DOWN COVERING THE ROAD ON
VALLEY ROAD ON SOUTH SIDE OF OCONOMOWOC.
TIME ESTIMATED FROM RADAR.
1045 PM TSTM WND DMG 3 SSW OCONOMOWOC LAKE 43.06N 88.48W
08/26/2018 WAUKESHA WI LAW ENFORCEMENT
TREES DOWN ON DOUSMAN ROAD IN TOWN OF
SUMMIT. TIME ESTIMATED FROM RADAR.
0936 PM TSTM WND DMG 1 SW LAC LA BELLE 43.14N 88.54W
08/26/2018 WAUKESHA WI LAW ENFORCEMENT
TWO POWER LINES AND SEVERAL TREES DOWN ON
WEST SIDE OF LAC LA BELLE. TIME ESTIMATED
FROM RADAR.
0918 PM TSTM WND DMG JEFFERSON 43.01N 88.81W
08/26/2018 JEFFERSON WI LAW ENFORCEMENT
NUMEROUS TREES DOWN IN JEFFERSON. TIME
ESTIMATED FROM RADAR.
0640 PM TSTM WND GST 1 ESE SHEBOYGAN 43.75N 87.69W
08/26/2018 M44 MPH LMZ643 WI C-MAN STATION
C-MAN STATION SGNW3. SHEBOYGAN LAKESHORE.
0606 PM TSTM WND DMG 1 WNW JACKSON 43.33N 88.18W
08/26/2018 WASHINGTON WI TRAINED SPOTTER
MULTIPLE 4 TO 6 INCH DIAMETER TREE BRANCHES
DOWN AT KERRY INGREDIENTS ON HIGHWAY 60.
SIMILAR SIZE BRANCHES DOWN 4 BLOCKS TO THE
EAST. PARKING SIGN WITH CONCRETE BASE
KNOCKED OVER. TIME ESTIMATED FROM RADAR.
0605 PM TSTM WND GST 3 W JACKSON 43.32N 88.22W
08/26/2018 M51 MPH WASHINGTON WI CO-OP OBSERVER
OBSERVER JACW3. RELAYED VIA SOCIAL MEDIA.
0530 PM TSTM WND DMG 1 E HUSTISFORD 43.35N 88.59W
08/26/2018 DODGE WI PUBLIC
9 INCH DIAMETER TREE BRANCH DOWN.
0439 PM TSTM WND GST 1 SSE PRINCETON 43.84N 89.12W
08/26/2018 M50 MPH GREEN LAKE WI TRAINED SPOTTER
0435 PM TSTM WND GST 2 WNW MIDDLETON 43.11N 89.53W
08/26/2018 M50 MPH DANE WI AWOS
CORRECTS PREVIOUS TSTM WND GST REPORT FROM 2
WNW MIDDLETON. KC29 MIDDLETON AIRPORT AWOS.
0433 PM HAIL MIDDLETON 43.10N 89.51W
08/26/2018 M0.75 INCH DANE WI PUBLIC
MPING REPORT.
0418 PM TSTM WND DMG LODI 43.32N 89.53W
08/26/2018 COLUMBIA WI LAW ENFORCEMENT
TREES DOWN AND POWER LINE DOWN DUE TO
LIGHTNING STRIKE IN LODI. TIME ESTIMATED
FROM RADAR.
0415 PM TSTM WND DMG PORTAGE 43.55N 89.47W
08/26/2018 COLUMBIA WI LAW ENFORCEMENT
TREES DOWN AND POWER LINE DOWN DUE TO
FALLING TREE IN PORTAGE. TIME ESTIMATED FROM
RADAR.
0406 PM TSTM WND DMG 5 S ENDEAVOR 43.64N 89.47W
08/26/2018 COLUMBIA WI LAW ENFORCEMENT
TREE DOWN ON POWER LINE.
0345 PM TSTM WND DMG NORTH FREEDOM 43.46N 89.86W
08/26/2018 SAUK WI LAW ENFORCEMENT
SIX REPORTS OF TREES DOWN ON ROADS.
&&Local storm report, Aug 27, 9:34 AM CDT, 2 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
934 AM CDT MON AUG 27 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0802 AM HEAVY RAIN 1 E GRAFTON 43.32N 87.94W
08/27/2018 M5.43 INCH OZAUKEE WI PUBLIC
0800 AM HEAVY RAIN 1 E BEAVER DAM 43.46N 88.81W
08/27/2018 M3.60 INCH DODGE WI CO-OP OBSERVER
WWTP.
0742 AM HEAVY RAIN 2 WSW GERMANTOWN 43.23N 88.15W
08/27/2018 M3.02 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0741 AM HEAVY RAIN SLINGER 43.33N 88.28W
08/27/2018 M4.28 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0741 AM HEAVY RAIN 1 WNW RICHFIELD 43.24N 88.26W
08/27/2018 M3.06 INCH WASHINGTON WI CO-OP OBSERVER
0734 AM HEAVY RAIN 2 WNW HOWARDS GROVE 43.84N 87.86W
08/27/2018 M5.20 INCH SHEBOYGAN WI PUBLIC
0732 AM HEAVY RAIN 1 W ALLENTON 43.42N 88.35W
08/27/2018 M5.52 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0730 AM HEAVY RAIN 1 ESE HARTFORD 43.32N 88.38W
08/27/2018 M4.60 INCH WASHINGTON WI CO-OP OBSERVER
WWTP.
0720 AM HEAVY RAIN 4 W RICHFIELD 43.23N 88.32W
08/27/2018 M5.00 INCH WASHINGTON WI PUBLIC
0715 AM HEAVY RAIN 1 ENE OOSTBURG 43.63N 87.78W
08/27/2018 M3.25 INCH SHEBOYGAN WI CO-OP OBSERVER
WWTP.
0715 AM HEAVY RAIN 1 SSE GERMANTOWN 43.23N 88.11W
08/27/2018 E2.85 INCH WASHINGTON WI PUBLIC
0715 AM HEAVY RAIN 1 SSW WEST BEND 43.41N 88.19W
08/27/2018 M5.46 INCH WASHINGTON WI PUBLIC
0715 AM HEAVY RAIN 1 ENE SAUKVILLE 43.39N 87.93W
08/27/2018 M6.90 INCH OZAUKEE WI CO-OP OBSERVER
WWTP.
0700 AM HEAVY RAIN 1 NE KEWASKUM 43.53N 88.22W
08/27/2018 M7.50 INCH WASHINGTON WI PUBLIC
RELAYED FROM BROADCAST MEDIA.
0600 AM HEAVY RAIN 3 E ALLENTON 43.42N 88.28W
08/27/2018 M4.75 INCH WASHINGTON WI TRAINED SPOTTER
0400 AM HEAVY RAIN 1 S PORT WASHINGTON 43.38N 87.88W
08/27/2018 M9.18 INCH OZAUKEE WI TRAINED SPOTTER
0330 AM HEAVY RAIN 2 W WEST BEND 43.42N 88.22W
08/27/2018 M7.25 INCH WASHINGTON WI PUBLIC
RELAYED VIA BROADCAST MEDIA.
0300 AM HEAVY RAIN 1 SE THIENSVILLE 43.23N 87.96W
08/27/2018 M4.00 INCH OZAUKEE WI BROADCAST MEDIA
0300 AM HEAVY RAIN PORT WASHINGTON 43.39N 87.87W
08/27/2018 M8.50 INCH OZAUKEE WI TRAINED SPOTTER
0230 AM FLASH FLOOD JACKSON 43.33N 88.16W
08/27/2018 WASHINGTON WI LAW ENFORCEMENT
FLASH FLOODING OF SOME STREETS IN THE
JACKSON AREA.
0230 AM FLASH FLOOD GRAFTON 43.32N 87.95W
08/27/2018 OZAUKEE WI LAW ENFORCEMENT
STREET FLOODING IN GRAFTON, SAUKVILLE AND
PORT WASHINGTON.
0230 AM FLASH FLOOD WEST BEND 43.42N 88.18W
08/27/2018 WASHINGTON WI LAW ENFORCEMENT
MANY STREETS FLOODED WITH 12 TO 18 INCHES OF
WATER.
0225 AM HEAVY RAIN BROWN DEER 43.18N 87.97W
08/27/2018 M2.74 INCH MILWAUKEE WI PUBLIC
0225 AM HEAVY RAIN 1 ESE WEST BEND 43.42N 88.17W
08/27/2018 M2.94 INCH WASHINGTON WI PUBLIC
0225 AM HEAVY RAIN 3 E LOMIRA 43.59N 88.38W
08/27/2018 M2.08 INCH FOND DU LAC WI PUBLIC
0225 AM HEAVY RAIN 4 WNW WEST BEND 43.45N 88.26W
08/27/2018 M2.46 INCH WASHINGTON WI PUBLIC
0225 AM HEAVY RAIN JACKSON 43.32N 88.16W
08/27/2018 M2.76 INCH WASHINGTON WI CO-OP OBSERVER
0225 AM HEAVY RAIN 3 W CEDARBURG 43.30N 88.05W
08/27/2018 M3.76 INCH OZAUKEE WI PUBLIC
1200 AM HEAVY RAIN GERMANTOWN 43.24N 88.12W
08/27/2018 M3.95 INCH WASHINGTON WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 1 N GLENDALE 43.14N 87.93W
08/27/2018 M3.56 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 4 NW MILWAUKEE 43.08N 87.96W
08/27/2018 M2.41 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN MEQUON 43.23N 87.99W
08/27/2018 M3.40 INCH OZAUKEE WI BROADCAST MEDIA
1200 AM HEAVY RAIN 2 SW GLENDALE 43.12N 87.95W
08/27/2018 M3.19 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 2 NNE MENOMONEE FALLS 43.18N 88.10W
08/27/2018 M2.29 INCH WAUKESHA WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 3 W BROWN DEER 43.17N 88.04W
08/27/2018 M2.95 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 3 ENE BUTLER 43.13N 88.01W
08/27/2018 M3.34 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 1 SSE MILWAUKEE 43.02N 87.90W
08/27/2018 M2.26 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 2 ESE CEDARBURG 43.28N 87.94W
08/27/2018 M3.14 INCH OZAUKEE WI PUBLIC
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN 3 S MILWAUKEE 43.00N 87.91W
08/27/2018 M2.22 INCH MILWAUKEE WI MESONET
MMSD RAIN GAUGE.
1200 AM HEAVY RAIN PORT WASHINGTON 43.39N 87.88W
08/27/2018 M2.20 INCH OZAUKEE WI BROADCAST MEDIA
1145 PM FLASH FLOOD 1 S MEQUON 43.23N 87.98W
08/26/2018 OZAUKEE WI LAW ENFORCEMENT
INTERSECTION OF CEDARBURG ROAD AND DIVISION
STREET CLOSED DUE TO FLOODING. A FEW OTHER
INTERSECTIONS IN MEQUON ALSO ARE FLOODED.
1125 PM FLASH FLOOD 2 SW WHITEFISH BAY 43.09N 87.94W
08/26/2018 MILWAUKEE WI BROADCAST MEDIA
STALLED VEHICLES IN FLOODED INTERSECTION OF
TEUTONIA AVENUE AND CAPITOL DRIVE. MORE
FLOODING AT INTERSECTION OF 20TH STREET AND
CAPITOL DRIVE.
1045 PM TSTM WND DMG 1 S OCONOMOWOC 43.08N 88.50W
08/26/2018 WAUKESHA WI LAW ENFORCEMENT
NUMEROUS TREES DOWN COVERING THE ROAD ON
VALLEY ROAD ON SOUTH SIDE OF OCONOMOWOC.
TIME ESTIMATED FROM RADAR.
1045 PM TSTM WND DMG 3 SSW OCONOMOWOC LAKE 43.06N 88.48W
08/26/2018 WAUKESHA WI LAW ENFORCEMENT
TREES DOWN ON DOUSMAN ROAD IN TOWN OF
SUMMIT. TIME ESTIMATED FROM RADAR.
0936 PM TSTM WND DMG 1 SW LAC LA BELLE 43.14N 88.54W
08/26/2018 WAUKESHA WI LAW ENFORCEMENT
TWO POWER LINES AND SEVERAL TREES DOWN ON
WEST SIDE OF LAC LA BELLE. TIME ESTIMATED
FROM RADAR.
0918 PM TSTM WND DMG JEFFERSON 43.01N 88.81W
08/26/2018 JEFFERSON WI LAW ENFORCEMENT
NUMEROUS TREES DOWN IN JEFFERSON. TIME
ESTIMATED FROM RADAR.
0640 PM TSTM WND GST 1 ESE SHEBOYGAN 43.75N 87.69W
08/26/2018 M44 MPH LMZ643 WI C-MAN STATION
C-MAN STATION SGNW3. SHEBOYGAN LAKESHORE.
0606 PM TSTM WND DMG 1 WNW JACKSON 43.33N 88.18W
08/26/2018 WASHINGTON WI TRAINED SPOTTER
MULTIPLE 4 TO 6 INCH DIAMETER TREE BRANCHES
DOWN AT KERRY INGREDIENTS ON HIGHWAY 60.
SIMILAR SIZE BRANCHES DOWN 4 BLOCKS TO THE
EAST. PARKING SIGN WITH CONCRETE BASE
KNOCKED OVER. TIME ESTIMATED FROM RADAR.
0605 PM TSTM WND GST 3 W JACKSON 43.32N 88.22W
08/26/2018 M51 MPH WASHINGTON WI CO-OP OBSERVER
OBSERVER JACW3. RELAYED VIA SOCIAL MEDIA.
0530 PM TSTM WND DMG 1 E HUSTISFORD 43.35N 88.59W
08/26/2018 DODGE WI PUBLIC
9 INCH DIAMETER TREE BRANCH DOWN.
0439 PM TSTM WND GST 1 SSE PRINCETON 43.84N 89.12W
08/26/2018 M50 MPH GREEN LAKE WI TRAINED SPOTTER
0435 PM TSTM WND GST 2 WNW MIDDLETON 43.11N 89.53W
08/26/2018 M50 MPH DANE WI AWOS
CORRECTS PREVIOUS TSTM WND GST REPORT FROM 2
WNW MIDDLETON. KC29 MIDDLETON AIRPORT AWOS.
0433 PM HAIL MIDDLETON 43.10N 89.51W
08/26/2018 M0.75 INCH DANE WI PUBLIC
MPING REPORT.
0418 PM TSTM WND DMG LODI 43.32N 89.53W
08/26/2018 COLUMBIA WI LAW ENFORCEMENT
TREES DOWN AND POWER LINE DOWN DUE TO
LIGHTNING STRIKE IN LODI. TIME ESTIMATED
FROM RADAR.
0415 PM TSTM WND DMG PORTAGE 43.55N 89.47W
08/26/2018 COLUMBIA WI LAW ENFORCEMENT
TREES DOWN AND POWER LINE DOWN DUE TO
FALLING TREE IN PORTAGE. TIME ESTIMATED FROM
RADAR.
0406 PM TSTM WND DMG 5 S ENDEAVOR 43.64N 89.47W
08/26/2018 COLUMBIA WI LAW ENFORCEMENT
TREE DOWN ON POWER LINE.
0345 PM TSTM WND DMG NORTH FREEDOM 43.46N 89.86W
08/26/2018 SAUK WI LAW ENFORCEMENT
SIX REPORTS OF TREES DOWN ON ROADS.
&&Local storm report, Aug 27, 11:21 AM CDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1121 AM CDT MON AUG 27 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0610 PM TSTM WND DMG JACKSON 43.32N 88.16W
08/26/2018 WASHINGTON WI NWS STORM SURVEY
A NATIONAL WEATHER SERVICE STORM SURVEY
FOUND SPORADIC WIND DAMAGE ACROSS WASHINGTON
COUNTY, CONCENTRATED NEAR THE TOWN OF
JACKSON. NO EVIDENCE WAS FOUND OF A TORNADO.
DAMAGE WAS THE RESULT OF APPROXIMATELY 70
MPH THUNDERSTORM WINDS.
&&
ARBThe office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 8:04 PM CDT | Tornado Warning | MKX | Columbia | 20 min |
| Aug 26, 8:08 PM CDT | Special Weather Statement | MKX | Green | 37 min |
| Aug 26, 8:42 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson, Rock | 48 min |
| Aug 26, 8:50 PM CDT | Special Weather Statement | MKX | Dodge | 55 min |
| Aug 26, 9:02 PM CDT | Severe Thunderstorm Warning | MKX | Dodge | 31 min |
| Aug 26, 9:10 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 35 min |
| Aug 26, 9:29 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Waukesha | 31 min |
| Aug 26, 9:38 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Washington | 37 min |
| Aug 26, 9:53 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 36 min |
| Aug 26, 10:18 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Ozaukee, Waukesha | 16 min |
| Aug 26, 10:22 PM CDT | Special Marine Warning | MKX | 38 min | |
| Aug 26, 11:04 PM CDT | Flash Flood Warning | MKX | Milwaukee, Ozaukee | 3 hr |
| Aug 26, 11:06 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Waukesha | 39 min |
| Aug 26, 11:10 PM CDT | Special Marine Warning | MKX | 65 min | |
| Aug 26, 11:42 PM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 19 min |
| Aug 26, 11:48 PM CDT | Special Marine Warning | MKX | 57 min | |
| Aug 27, 12:56 AM CDT | Special Marine Warning | MKX | 64 min | |
| Aug 27, 1:59 AM CDT | Flash Flood Warning | MKX | Ozaukee | 3 hr |
| Aug 27, 2:14 AM CDT | Areal Flood Advisory | MKX | Dodge, Washington | 3 hr |
| Aug 27, 2:20 AM CDT | Areal Flood Advisory | MKX | Ozaukee, Sheboygan | 3 hr |
| Aug 27, 3:27 AM CDT | Small Craft Advisory | MKX | 40 hr | |
| Aug 27, 5:03 AM CDT | Areal Flood Warning | MKX | Ozaukee, Washington | 15 hr |
| Aug 27, 6:27 AM CDT | Marine Dense Fog Advisory | MKX | 5 hr | |
| Aug 27, 9:12 AM CDT | River Flood Warning | MKX | Ozaukee | 72 hr |
| Aug 27, 9:12 AM CDT | River Flood Warning | MKX | Ozaukee | 4 days |
| Aug 27, 3:13 PM CDT | Marine Dense Fog Advisory | MKX | 10 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.