Alert archive / Wisconsin / Flash Flood Watches in 2018

Flash Flood Watch 4, NWS Milwaukee, WI

August 27, 201816 counties in Wisconsin

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.

Skew-T log-pSkew-T log-p diagram, Green Bay/Straub, WI at 12:00Z on 2018-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 193 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 12:00Z on 2018-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

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...MBK
Hazardous 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.

&&

ARB

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 26, 8:04 PM CDTTornado WarningMKXColumbia20 min
Aug 26, 8:08 PM CDTSpecial Weather StatementMKXGreen37 min
Aug 26, 8:42 PM CDTSevere Thunderstorm WarningMKXDane, Jefferson, Rock48 min
Aug 26, 8:50 PM CDTSpecial Weather StatementMKXDodge55 min
Aug 26, 9:02 PM CDTSevere Thunderstorm WarningMKXDodge31 min
Aug 26, 9:10 PM CDTSevere Thunderstorm WarningMKXJefferson35 min
Aug 26, 9:29 PM CDTSevere Thunderstorm WarningMKXJefferson, Waukesha31 min
Aug 26, 9:38 PM CDTSevere Thunderstorm WarningMKXDodge, Washington37 min
Aug 26, 9:53 PM CDTSevere Thunderstorm WarningMKXWalworth36 min
Aug 26, 10:18 PM CDTSevere Thunderstorm WarningMKXMilwaukee, Ozaukee, Waukesha16 min
Aug 26, 10:22 PM CDTSpecial Marine WarningMKX38 min
Aug 26, 11:04 PM CDTFlash Flood WarningMKXMilwaukee, Ozaukee3 hr
Aug 26, 11:06 PM CDTSevere Thunderstorm WarningMKXMilwaukee, Waukesha39 min
Aug 26, 11:10 PM CDTSpecial Marine WarningMKX65 min
Aug 26, 11:42 PM CDTSevere Thunderstorm WarningMKXRock, Walworth19 min
Aug 26, 11:48 PM CDTSpecial Marine WarningMKX57 min
Aug 27, 12:56 AM CDTSpecial Marine WarningMKX64 min
Aug 27, 1:59 AM CDTFlash Flood WarningMKXOzaukee3 hr
Aug 27, 2:14 AM CDTAreal Flood AdvisoryMKXDodge, Washington3 hr
Aug 27, 2:20 AM CDTAreal Flood AdvisoryMKXOzaukee, Sheboygan3 hr
Aug 27, 3:27 AM CDTSmall Craft AdvisoryMKX40 hr
Aug 27, 5:03 AM CDTAreal Flood WarningMKXOzaukee, Washington15 hr
Aug 27, 6:27 AM CDTMarine Dense Fog AdvisoryMKX5 hr
Aug 27, 9:12 AM CDTRiver Flood WarningMKXOzaukee72 hr
Aug 27, 9:12 AM CDTRiver Flood WarningMKXOzaukee4 days
Aug 27, 3:13 PM CDTMarine Dense Fog AdvisoryMKX10 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.