Alert archive / Wisconsin / Flash Flood Warnings in 2018
Flash Flood Warning 7, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flash flood warning at Aug 26, 2018, 11:04 PM CDT for Milwaukee County, Ozaukee County, Wisconsin. It was in force for 3 hr. 10 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 26, 2018, 11:04 PM CDT (04:04 UTC)
- Expired
- Aug 27, 2018, 2:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Milwaukee County, WI, Ozaukee County, WI
The radar
The Milwaukee radar (KMKX), 56 km from the middle of the area, began a volume at 04:06 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 26, 11:25 PM CDT | FLASH FLOOD | 2 Sw Whitefish Bay, WI | STALLED VEHICLES IN FLOODED INTERSECTION OF TEUTONIA AVENUE AND CAPITOL DRIVE. MORE FLOODING AT INTERSECTION OF 20TH STREET AND CAPITOL DRIVE. |
| Aug 26, 11:45 PM CDT | FLASH FLOOD | 1 S Mequon, WI | INTERSECTION OF CEDARBURG ROAD AND DIVISION STREET CLOSED DUE TO FLOODING. A FEW OTHER INTERSECTIONS IN MEQUON ALSO ARE FLOODED. |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 2.26 | 1 Sse Milwaukee, WI | MMSD RAIN GAUGE. |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 2.41 | 4 Nw Milwaukee, WI | MMSD RAIN GAUGE. |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 2.95 | 3 W Brown Deer, WI | MMSD RAIN GAUGE. |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 3.14 | 2 Ese Cedarburg, WI | MMSD RAIN GAUGE. |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 3.19 | 2 Sw Glendale, WI | MMSD RAIN GAUGE. |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 3.34 | 3 Ene Butler, WI | MMSD RAIN GAUGE. |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 3.4 | Mequon, WI | |
| Aug 27, 12:00 AM CDT | HEAVY RAIN 3.56 | 1 N Glendale, WI | MMSD RAIN GAUGE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.1 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
- 103 J/kg
- Mixed-layer CIN
- -176 J/kg
- Mixed-layer LCL
- 894 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
656
WGUS53 KMKX 270404
FFWMKX
WIC079-089-270700-
/O.NEW.KMKX.FF.W.0007.180827T0404Z-180827T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Milwaukee/Sullivan WI
1104 PM CDT SUN AUG 26 2018
The National Weather Service in Milwaukee/Sullivan has issued a
* Flash Flood Warning for...
Southern Ozaukee County in southeastern Wisconsin...
Northern Milwaukee County in southeastern Wisconsin...
* Until 200 AM CDT.
* At 1102 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 2.50 inches of rain have
already fallen in the past few hours in some areas. Flash flooding
is expected to begin shortly.
* Some locations that will experience flooding include...
Milwaukee, West Allis, Wauwatosa, Mequon, Whitefish Bay, Brown
Deer, Grafton, Cedarburg, Port Washington, Fox Point, Bayside, West
Milwaukee, Thiensville, Butler, River Hills, Milwaukee Hoan Bridge,
Shorewood, Marquette University, UW-
Milwaukee and Milwaukee Bradford Beach.
Additional rainfall amounts of one to two inches are possible in the
warned area in the next hour or two.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4303 8788 4301 8788 4301 8807 4336 8806
4338 8786 4326 8789 4324 8789 4318 8787
4312 8788 4307 8785
$$
WOOD2 follow-up statements
730
WGUS73 KMKX 270459
FFSMKX
Flash Flood Statement
National Weather Service Milwaukee/Sullivan WI
1159 PM CDT SUN AUG 26 2018
WIC079-089-270700-
/O.CON.KMKX.FF.W.0007.000000T0000Z-180827T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ozaukee WI-Milwaukee WI-
1159 PM CDT SUN AUG 26 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHWESTERN OZAUKEE AND NORTHERN MILWAUKEE COUNTIES...
At 1152 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2.00 to 3.50 inches of
rain have already fallen. Flash flooding is expected to begin
shortly, or is already occurring.
Some locations that will experience flooding include...
Milwaukee, West Allis, Wauwatosa, Mequon, Whitefish Bay, Brown Deer,
Grafton, Cedarburg, Port Washington, Fox Point, Bayside, West
Milwaukee, Thiensville, Butler, River Hills, Milwaukee Hoan Bridge,
Shorewood, Marquette University, UW-
Milwaukee and Milwaukee Bradford Beach.
Additional rainfall amounts of up to 0.50 inches are possible in
southern Ozaukee County over the next hour. Most of the thunderstorm
activity has moved out of Milwaukee County.
However, runoff from the heavy rainfall will cause flash flooding
for the next few hours across low lying areas, especially small
creeks and streams, and streets and intersections at the bottom of
hills and in low spots. Do not drive into flooded roads!
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4303 8788 4301 8788 4301 8807 4336 8806
4338 8786 4326 8789 4324 8789 4318 8787
4312 8788 4307 8785
$$
WOOD373
WGUS73 KMKX 270550
FFSMKX
Flash Flood Statement
National Weather Service Milwaukee/Sullivan WI
1250 AM CDT MON AUG 27 2018
WIC079-089-270700-
/O.CON.KMKX.FF.W.0007.000000T0000Z-180827T0700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Ozaukee WI-Milwaukee WI-
1250 AM CDT MON AUG 27 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHWESTERN OZAUKEE AND NORTHERN MILWAUKEE COUNTIES...
At 1245 AM CDT, Doppler radar indicated additional thunderstorms
developing over or moving into the warned area. 2.00 to 3.50 inches
of rain have already fallen in the warned area. Flash flooding is
expected to begin shortly, or is already occurring.
Some locations that will experience flooding include...
Milwaukee, West Allis, Wauwatosa, Mequon, Whitefish Bay, Brown Deer,
Grafton, Cedarburg, Port Washington, Fox Point, Bayside, West
Milwaukee, Thiensville, Butler, River Hills, Milwaukee Hoan Bridge,
Shorewood, Marquette University, UW-
Milwaukee and Milwaukee Bradford Beach.
Additional rainfall amounts of up to 0.50 inches are in the warned
areas, with the scattered thunderstorms developing over or moving
into the warned area.
Runoff from the previous heavy rainfall will cause flash flooding
for the next hour or two across low lying areas, especially small
creeks and streams, and streets and intersections at the bottom of
hills and in low spots. Do not drive into flooded roads!
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.
&&
LAT...LON 4303 8788 4301 8788 4301 8807 4336 8806
4338 8786 4326 8789 4324 8789 4318 8787
4312 8788 4307 8785
$$
WOODThe 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, 11:06 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, 11:45 AM CDT | Flash Flood Watch | MKX | Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 10 more | 35 hr |
| Aug 27, 3:13 PM CDT | Marine Dense Fog Advisory | MKX | 10 hr |
Nearby
Flash Flood Warnings in Wisconsin, 2018Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.