Alert archive / Wisconsin / Flash Flood Warnings in 2016

Flash Flood Warning 7, NWS Milwaukee, WI

August 30, 2016Milwaukee County, Wisconsin

NWS Milwaukee, WI issued this flash flood warning at Aug 30, 2016, 2:15 PM CDT for Milwaukee County, Wisconsin. It was in force for 60 min. 16 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 30, 2016, 2:15 PM CDT (19:15 UTC)
Expired: Aug 30, 2016, 3:15 PM CDT
In force: 60 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Flood severity: None

County Milwaukee County, WI

The radar

The Milwaukee radar (KMKX), 57 km from the middle of the area, began a volume at 19:18 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 30, 2:21 PM CDT	FLASH FLOOD	5 S Milwaukee, WI	SEVERAL VEHICLES STRANDED IN WATER ON 10TH AND LAYTON. FIRE DEPARTMENT ON SCENE DOING RESCUE. REPORTED VIA SOCIAL MEDIA.
Aug 30, 2:24 PM CDT	HEAVY RAIN 1.78	1 Nnw Oak Creek, WI	MESONET STATION OAK CREEK /E5433/.
Aug 30, 2:25 PM CDT	HEAVY RAIN 2.64	3 Ese West Milwaukee, WI	UPDATED TOTAL AT 225PM. 1.8 INCHES OF RAIN RAIN FELL IN 2 HOURS. 1.6 INCHES FELL BETWEEN 12 AND 1 PM. FROM MMSD RAIN GAUGE.
Aug 30, 2:29 PM CDT	HEAVY RAIN 1.84	1 Ene Greendale, WI	MESONET STATION 1 ENE GREENDALE /D8657/.
Aug 30, 2:38 PM CDT	HEAVY RAIN 1.75	West Allis, WI	TOTAL SO FAR. 92ND AND OKLAHOMA AVE.
Aug 30, 2:45 PM CDT	HEAVY RAIN 2.04	Milwaukee International, WI	TOTAL SO FAR. HEAVY RAIN STILL FALLING.
Aug 30, 2:55 PM CDT	HEAVY RAIN 2.79	3 Ese West Milwaukee, WI	UPDATED TOTAL AT 255PM. 1.8 INCHES OF RAIN RAIN FELL IN 2 HOURS. 1.6 INCHES FELL BETWEEN 12 AND 1 PM. FROM MMSD RAIN GAUGE MIKW3.
Aug 30, 3:00 PM CDT	HEAVY RAIN 2.19	2 Sse South Milwaukee, WI	TOTAL SO FAR AT OAK CREEK MMSD SITE. STATION OKKW3.
Aug 30, 3:00 PM CDT	HEAVY RAIN 2.6	3 W Cudahy, WI	STORM TOTAL AMOUNT. MMSD STATION MIAW3.
Aug 30, 3:00 PM CDT	HEAVY RAIN 2.6	3 W Cudahy, WI	TOTAL SO FAR. MMSD STATION MIAW3.
Aug 30, 3:02 PM CDT	HEAVY RAIN 1.24	1 Se Saint Francis, WI	MESONET STATION 1 ESE SAINT FRANCIS /D8359/.
Aug 30, 3:05 PM CDT	HEAVY RAIN 1.18	2 S West Allis, WI	MESONET STATION 1 S WEST ALLIS /D5497/.
Aug 30, 3:08 PM CDT	HEAVY RAIN 1.13	1 Sse West Allis, WI	MESONET STATION WEST ALLIS /D5010/.
Aug 30, 3:09 PM CDT	HEAVY RAIN 1.88	1 Ene Greendale, WI	MESONET STATION 1 ENE GREENDALE /D8657/.
Aug 30, 3:09 PM CDT	HEAVY RAIN 2	1 Nnw Oak Creek, WI	MESONET STATION OAK CREEK /E5433/.
Aug 30, 3:13 PM CDT	HEAVY RAIN 1.36	1 Sse Milwaukee, WI	TOTAL SO FAR AT JONES ISLAND. MMSD STATION MJIW3.

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 12:00Z, 7.3 hours before the alert went out and 176 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1156 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 789 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

575 
WGUS53 KMKX 301915
FFWMKX
WIC079-302015-
/O.NEW.KMKX.FF.W.0007.160830T1915Z-160830T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
215 PM CDT TUE AUG 30 2016

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MILWAUKEE COUNTY IN SOUTHEASTERN WISCONSIN...

* UNTIL 315 PM CDT

* AT 212 PM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. OVER
  TWO INCHES OF RAIN HAVE ALREADY FALLEN IN PARTS OF THE MILWAUKEE
  METRO AREA. ANOTHER ONE TO TWO INCHES ARE EXPECTED THROUGH 330 PM.
  FLASH FLOODING IS ONGOING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MILWAUKEE...WEST ALLIS...WAUWATOSA...GREENFIELD...OAK CREEK...
  SOUTH MILWAUKEE...CUDAHY...GREENDALE...ST. FRANCIS...
  HALES CORNERS...ELM GROVE...WEST MILWAUKEE...
  MILWAUKEE HOAN BRIDGE...MARQUETTE UNIVERSITY...
  MAIER FESTIVAL PARK...MILWAUKEE BRADFORD BEACH...
  MILWAUKEE SOUTH SHORE PARK...MILWAUKEE CO ZOO...
  STATE FAIR PARK AND MILLER PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4281 8778 4284 8782 4284 8807 4308 8807
      4306 8787 4305 8787 4302 8789 4297 8783
      4292 8782 4288 8783 4286 8782 4281 8776
      4279 8775

$$

MRC

2 follow-up statements

840 
WGUS73 KMKX 301938
FFSMKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
238 PM CDT TUE AUG 30 2016

WIC079-302015-
/O.CON.KMKX.FF.W.0007.000000T0000Z-160830T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MILWAUKEE WI-
238 PM CDT TUE AUG 30 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
SOUTHERN MILWAUKEE COUNTY...

AT 237 PM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN OVER THE WARNED AREA. UP TO TWO
INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS ONGOING IN
THE MILWAUKEE METRO AREA.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MILWAUKEE...WEST ALLIS...GREENFIELD...OAK CREEK...SOUTH MILWAUKEE...
CUDAHY...GREENDALE...ST. FRANCIS...HALES CORNERS...WEST MILWAUKEE...
MILWAUKEE HOAN BRIDGE...MAIER FESTIVAL PARK...MILWAUKEE SOUTH SHORE
PARK AND MITCHELL PARK DOMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. DO
NOT DRIVE THROUGH FLOODED AREAS.

&&

LAT...LON 4284 8782 4284 8807 4300 8807 4304 8789
      4303 8788 4302 8789 4297 8783 4292 8782
      4289 8783 4286 8782 4282 8777 4279 8775

$$

MRC

261 
WGUS73 KMKX 302011
FFSMKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
311 PM CDT TUE AUG 30 2016

WIC079-302018-
/O.EXP.KMKX.FF.W.0007.000000T0000Z-160830T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MILWAUKEE WI-
311 PM CDT TUE AUG 30 2016

...THE FLASH FLOOD WARNING FOR SOUTHERN MILWAUKEE COUNTY WILL EXPIRE
AT 315 PM CDT...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT...THOUGH SOME ROADS MAY STILL HAVE STANDING WATER. PLEASE
CONTINUE TO HEED ANY ROAD CLOSURES.

LAT...LON 4284 8782 4284 8807 4300 8807 4304 8789
      4303 8788 4302 8789 4297 8783 4292 8782
      4289 8783 4286 8782 4282 8777 4279 8775

$$

DDV

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 30, 1:06 PM CDT	Special Weather Statement	MKX	Milwaukee	54 min
Aug 30, 1:45 PM CDT	Areal Flood Advisory	MKX	Milwaukee	60 min
Aug 30, 2:02 PM CDT	Special Weather Statement	MKX	Kenosha, Milwaukee, Racine, Walworth	88 min

Nearby

Flash Flood Warnings in Wisconsin, 2016 Every flash flood warning in 2016

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.