Alert archive / Wisconsin / Flash Flood Warnings in 2017
Flash Flood Warning 5, NWS Milwaukee, WI
NWS Milwaukee, WI issued this flash flood warning at Jul 12, 2017, 1:34 AM CDT for 4 counties in Wisconsin. It was in force for 3 hr. 12 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
- Jul 12, 2017, 1:34 AM CDT (06:34 UTC)
- Expired
- Jul 12, 2017, 4:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jefferson County, WI, Racine County, WI, Walworth County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 18 km from the middle of the area, began a volume at 06:36 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 |
|---|---|---|---|
| Jul 12, 3:15 AM CDT | HEAVY RAIN 3.6 | 2 Sse Dousman, WI | |
| Jul 12, 3:20 AM CDT | HEAVY RAIN 2.45 | 3 Sse Wales, WI | TOTAL SO FAR. MESONET STATION D7830, 2 SSE WALES. |
| Jul 12, 3:20 AM CDT | HEAVY RAIN 4.11 | 3 Se Eagle, WI | STORM TOTAL SO FAR. MESONET STATION C8077, 2 SE EAGLE. |
| Jul 12, 4:00 AM CDT | FLASH FLOOD | 1 S Hartland, WI | 3 INTERSECTIONS IN THE VILLAGE OF HARTLAND WERE CLOSED EARLY THIS MORNING DUE TO FLASH FLOODING. LINDENWOOD/MAPLE. MAPLE/NORTH SHORE DR. AND COTTONWOOD AVE/LINDENWOOD AVE. |
| Jul 12, 4:00 AM CDT | FLASH FLOOD | 3 Nne Waukesha, WI | ROADS CLOSED TO FLOODING EARLIER THIS MORNING IN PEWAUKEE INCLUDING REDFORD BLVD/I94, PEWAUKEE RD/I94 AND REDFORD BLVD/WATERTOWN RD. |
| Jul 12, 4:00 AM CDT | HEAVY RAIN 6.52 | 2 Ene Muskego, WI | COCORAHS STATION WI-WK-48, 2 ENE MUSKEGO. |
| Jul 12, 4:16 AM CDT | HEAVY RAIN 4.46 | 3 W Mukwonago, WI | TOTAL SO FAR AT WHISPERING OAKS PERSONAL WEATHER STATION. |
| Jul 12, 4:16 AM CDT | HEAVY RAIN 4.46 | 4 W Mukwonago, WI | TOTAL SO FAR AT WHISPERING OAKS PERSONAL WEATHER STATION. |
| Jul 12, 4:21 AM CDT | HEAVY RAIN 3.86 | 1 Ne Wales, WI | TOTAL SO FAR AT LEGENDS PERSONAL WEATHER STATION NEAR WALES. |
| Jul 12, 4:21 AM CDT | HEAVY RAIN 3.86 | 1 Nne Wales, WI | TOTAL SO FAR AT LEGENDS PERSONAL WEATHER STATION NEAR WALES. |
| Jul 12, 4:24 AM CDT | HEAVY RAIN 3.55 | 2 Wsw Waukesha, WI | TOTAL SO FAR AT VILLAGES OF BROOKSHIRE PERSONAL WEATHER STATION SOUTHWEST OF WAUKESHA. |
| Jul 12, 4:30 AM CDT | HEAVY RAIN 3.2 | 2 Sw Palmyra, WI | COCORAHS STATION WI-JF-15, 1 SW PALMYRA. |
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, 6.6 hours before the alert went out and 164 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
- 643 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1366 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted.
594 WGUS53 KMKX 120634 FFWMKX WIC055-101-127-133-120930- /O.NEW.KMKX.FF.W.0005.170712T0634Z-170712T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Milwaukee/Sullivan WI 134 AM CDT WED JUL 12 2017 The National Weather Service in Milwaukee/Sullivan has issued a * Flash Flood Warning for... Northeastern Walworth County in southeastern Wisconsin... Northwestern Racine County in southeastern Wisconsin... Waukesha County in southeastern Wisconsin... Eastern Jefferson County in southeastern Wisconsin... * Until 430 AM CDT * At 133 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to one inch of rain has already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Waukesha, New Berlin, Brookfield, Menomonee Falls, Muskego, Whitewater, Pewaukee, Sussex, Hartland, Mukwonago, Delafield, Elm Grove, East Troy, Wales, Okauchee Lake, Wind Lake, Oconomowoc, Merton, Dousman and North Prairie. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 4319 8807 4273 8807 4283 8874 4316 8876 $$ DAVIS
3 follow-up statements
992 WGUS73 KMKX 120656 FFSMKX Flash Flood Statement National Weather Service Milwaukee/Sullivan WI 156 AM CDT WED JUL 12 2017 WIC055-101-127-133-120930- /O.CON.KMKX.FF.W.0005.000000T0000Z-170712T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Walworth WI-Racine WI-Waukesha WI-Jefferson WI- 156 AM CDT WED JUL 12 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 AM CDT FOR NORTHEASTERN WALWORTH...NORTHWESTERN RACINE...WAUKESHA AND EASTERN JEFFERSON COUNTIES... At 153 AM CDT, Doppler radar continued to show thunderstorms producing heavy rain across the warned area. One to 1 1/2 inches of rain has already fallen, especially in the Palmyra, Eagle and Dousman areas. Flash flooding is expected. Some locations that will experience flooding include... Waukesha, New Berlin, Brookfield, Menomonee Falls, Muskego, Whitewater, Pewaukee, Sussex, Hartland, Mukwonago, Delafield, Elm Grove, East Troy, Wales, Okauchee Lake, Wind Lake, Oconomowoc, Merton, Dousman and North Prairie. Additional rainfall amounts of around 1 inch are possible in the warned area. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 4319 8807 4273 8807 4283 8874 4316 8876 $$ DAVIS
672 WGUS73 KMKX 120803 FFSMKX Flash Flood Statement National Weather Service Milwaukee/Sullivan WI 303 AM CDT WED JUL 12 2017 WIC055-101-127-133-120930- /O.CON.KMKX.FF.W.0005.000000T0000Z-170712T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Walworth WI-Racine WI-Waukesha WI-Jefferson WI- 303 AM CDT WED JUL 12 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 AM CDT FOR NORTHEASTERN WALWORTH...NORTHWESTERN RACINE...WAUKESHA AND EASTERN JEFFERSON COUNTIES... At 300 AM CDT, Doppler radar and spotter reports indicate 2 to 3 inches of rain has fallen across the warned area. An additional inch of rain is possible. The heaviest rain has fallen in the Palmyra/Eagle area north toward Hartland, Pewaukee and Merton. Some locations that will experience flooding include... Waukesha, New Berlin, Brookfield, Menomonee Falls, Muskego, Whitewater, Pewaukee, Sussex, Hartland, Mukwonago, Delafield, Elm Grove, East Troy, Wales, Okauchee Lake, Wind Lake, Oconomowoc, Merton, Dousman and North Prairie. 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. && LAT...LON 4319 8807 4273 8807 4283 8874 4316 8876 $$ DAVIS
075 WGUS73 KMKX 120907 FFSMKX Flash Flood Statement National Weather Service Milwaukee/Sullivan WI 407 AM CDT WED JUL 12 2017 WIC055-101-127-133-120930- /O.CON.KMKX.FF.W.0005.000000T0000Z-170712T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Walworth WI-Racine WI-Waukesha WI-Jefferson WI- 407 AM CDT WED JUL 12 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 AM CDT FOR NORTHEASTERN WALWORTH...NORTHWESTERN RACINE...WAUKESHA AND EASTERN JEFFERSON COUNTIES... At 403 AM CDT, Doppler radar does show the rain has mostly moved out of the warning area. Many locations received 2 to 3 inches of rain, especially from Palmyra to Oconomowoc to New Berlin and Wind Lake. Some lingering flooding is likely occurring. More showers and storms west of the warning area may move through by 6 am, but there is uncertain as to the trends of those storms. We will likely allow this warning to expire at 430 am. Some locations that will experience flooding include... Waukesha, New Berlin, Brookfield, Menomonee Falls, Muskego, Whitewater, Pewaukee, Sussex, Hartland, Mukwonago, Delafield, Elm Grove, East Troy, Wales, Okauchee Lake, Wind Lake, Oconomowoc, Merton, Dousman and North Prairie. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 4319 8807 4273 8807 4283 8874 4316 8876 $$ DAVIS
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 8:42 PM CDT | Special Weather Statement | MKX | Lafayette | 63 min |
| Jul 11, 9:03 PM CDT | River Flood Watch | MKX | Kenosha | 6 days |
| Jul 11, 9:20 PM CDT | Special Weather Statement | MKX | Iowa | 40 min |
| Jul 11, 9:50 PM CDT | Special Weather Statement | MKX | Iowa | 55 min |
| Jul 11, 10:01 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green | 29 min |
| Jul 11, 10:20 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Rock | 40 min |
| Jul 12, 12:02 AM CDT | Special Weather Statement | MKX | Kenosha, Racine, Walworth | 58 min |
| Jul 12, 12:20 AM CDT | Flash Flood Warning | MKX | Kenosha, Racine, Walworth | 10 hr |
| Jul 12, 12:55 AM CDT | Special Weather Statement | MKX | Lafayette | 50 min |
| Jul 12, 1:14 AM CDT | Special Weather Statement | MKX | Walworth | 31 min |
| Jul 12, 1:33 AM CDT | Severe Thunderstorm Warning | MKX | Kenosha | 27 min |
| Jul 12, 3:26 AM CDT | River Flood Warning | MKX | Kenosha | 15 days |
| Jul 12, 4:25 AM CDT | River Flood Warning | MKX | Racine | 6 days |
| Jul 12, 4:41 AM CDT | River Flood Warning | MKX | Waukesha | 24 hr |
| Jul 12, 4:43 AM CDT | Special Weather Statement | MKX | Iowa | 32 min |
| Jul 12, 5:13 AM CDT | Special Weather Statement | MKX | Iowa | 32 min |
| Jul 12, 5:32 AM CDT | Special Weather Statement | MKX | Rock | 28 min |
| Jul 12, 5:55 AM CDT | Special Weather Statement | MKX | Columbia, Marquette, Sauk | 35 min |
| Jul 12, 5:59 AM CDT | Special Weather Statement | MKX | Racine | 46 min |
| Jul 12, 6:07 AM CDT | Special Weather Statement | MKX | Walworth | 23 min |
| Jul 12, 6:36 AM CDT | Special Weather Statement | MKX | Columbia, Sauk | 54 min |
| Jul 12, 7:01 AM CDT | Special Weather Statement | MKX | Columbia, Dane, Iowa, Sauk | 44 min |
| Jul 12, 7:06 AM CDT | Special Weather Statement | MKX | Kenosha, Racine | 54 min |
| Jul 12, 7:18 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Jefferson, Rock | 27 min |
| Jul 12, 7:32 AM CDT | Special Marine Warning | MKX | 88 min | |
| Jul 12, 7:40 AM CDT | Special Weather Statement | MKX | Green, Jefferson, Rock, Walworth | 35 min |
| Jul 12, 7:49 AM CDT | Areal Flood Advisory | MKX | Dane | 3 hr |
| Jul 12, 8:06 AM CDT | Special Weather Statement | MKX | Milwaukee, Waukesha | 39 min |
| Jul 12, 8:16 AM CDT | Areal Flood Advisory | MKX | Rock | 3 hr |
| Jul 12, 8:36 AM CDT | Special Weather Statement | MKX | Kenosha, Racine | 24 min |
| Jul 12, 10:07 AM CDT | Areal Flood Warning | MKX | Kenosha, Racine, Walworth | 6 hr |
| Jul 12, 10:21 AM CDT | River Flood Warning | MKX | Waukesha | 24 hr |
| Jul 12, 11:25 AM CDT | River Flood Warning | MKX | Rock | 17 hr |
| Jul 12, 1:02 PM CDT | Special Weather Statement | MKX | Lafayette | 28 min |
| Jul 12, 4:18 PM CDT | River Flood Warning | MKX | Lafayette | 51 hr |
| Jul 12, 4:18 PM CDT | River Flood Warning | MKX | Rock | 51 hr |
| Jul 12, 4:22 PM CDT | River Flood Watch | MKX | Jefferson | 48 hr |
| Jul 12, 5:55 PM CDT | Areal Flood Warning | MKX | Kenosha, Racine, Walworth | 24 hr |
Nearby
Flash Flood Warnings in Wisconsin, 2017Every flash flood warning in 2017
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.