Alert archive / Wisconsin / Special Weather Statements in 2016

Special Weather Statement, NWS Milwaukee, WI

September 21, 2016Sauk County, Wisconsin

NWS Milwaukee, WI issued this special weather statement at Sep 21, 2016, 7:13 PM CDT for Sauk County, Wisconsin. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 21, 2016, 7:13 PM CDT (00:13 UTC)
Expired
Sep 21, 2016, 7:45 PM CDT
In force
32 min
Issued by
NWS Milwaukee, WI

County Sauk County, WI

The radar

The La Crosse radar (KARX), 95 km from the middle of the area, began a volume at 00:13 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 00:00Z, 0.2 hours before the alert went out and 188 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 00:00Z on 2016-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2016-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2148 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
-43 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Sep 21, 3:17 PM CDT, 3 hours 56 minutes earlier.

Area forecast discussion, Sep 21, 3:17 PM CDT, 3 hours 56 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Sep 21, 3:24 PM CDT, 3 hours 49 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
324 PM CDT WED SEP 21 2016

WIZ046-047-051-052-056>060-062>072-222030-
MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE-
WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE-
LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA-
324 PM CDT WED SEP 21 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN.

.DAY ONE...TONIGHT

MORE SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN ARE EXPECTED. A
FLASH FLOOD WATCH HAS BEEN POSTED MAINLY NORTH OF A LINE
STRETCHING FROM SHEBOYGAN TO JUNEAU TO MADISON TO MINERAL POINT
THROUGH THURSDAY. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES
WILL BE COMMON WITH LOCALLY 3 TO 4 INCHES POSSIBLE.

THERE IS A MARGINAL RISK FOR SEVERE THUNDERSTORMS WEST OF A
FOND DU LAC TO LAKE GENEVA LINE. THE PRIMARY THREAT IS LARGE HAIL
AND DAMAGING WIND.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

MORE SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN ARE EXPECTED
INTO THURSDAY EVENING...MAINLY FOR THE SAME AREA HIGHLIGHTED FOR
TODAY AND TONIGHT. THE FLASH FLOOD WATCH CONTINUES THROUGH 7 PM
THURSDAY.

CHANCES OF THUNDERSTORMS ARE FORECAST AGAIN FOR SUNDAY AND INTO
EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING. ANY RAINFALL
REPORTS OF SIGNIFICANT ACCUMULATION ARE APPRECIATED.

LMZ643>646-222030-
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-
324 PM CDT WED SEP 21 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN.

.DAY ONE...TONIGHT

THUNDERSTORMS ARE LIKELY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY

NORTHEAST WINDS AND WAVES MAY APPROACH SMALL CRAFT ADVISORY LEVELS
THURSDAY NIGHT AND FRIDAY.

THE CHANCE FOR THUNDERSTORMS WILL CONTINUE THROUGH THURSDAY
NIGHT...THEN AGAIN SUNDAY INTO EARLY NEXT WEEK.

HENTZ

WWW.WEATHER.GOV/MKX

In the hours before

Local storm report, Sep 21, 5:03 PM CDT, 2 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
503 PM CDT WED SEP 21 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0440 PM     HEAVY RAIN       MADISON                 43.08N 89.38W
09/21/2016  U0.00 INCH       DANE               WI   PUBLIC

            STREET FLOODING ALONG NORTHPORT DRIVE. RELAYED VIA
            TWITTER.

&&

JTS
Special weather statement, Sep 21, 5:08 PM CDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
508 PM CDT WED SEP 21 2016

WIZ057-058-063-064-069-070-212300-
JEFFERSON-ROCK-COLUMBIA-DODGE-DANE-WALWORTH-
508 PM CDT WED SEP 21 2016

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN
COLUMBIA...WESTERN JEFFERSON...SOUTHWESTERN DODGE AND EASTERN DANE
COUNTIES...

AT 507 PM CDT...STRONG THUNDERSTORMS WERE CLUSTERED NEAR SUN
PRAIRIE... MOVING EAST AT 25 MPH.

NICKEL SIZE HAIL IS POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
EASTERN MADISON...SUN PRAIRIE...STOUGHTON...FORT ATKINSON...
JEFFERSON...MCFARLAND...MONONA...WINDSOR...LAKE MILLS...EDGERTON...
COLUMBUS...MARSHALL...WATERLOO...DEFOREST...COTTAGE GROVE...
DEERFIELD...CAMBRIDGE...LAKE KOSHKONONG...LAKE RIPLEY AND ALBION.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THISE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4285 8931 4334 8939 4338 8884 4284 8877
TIME...MOT...LOC 2207Z 268DEG 24KT 4322 8919

MRC
Local storm report, Sep 21, 5:37 PM CDT, 1 hour 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
537 PM CDT WED SEP 21 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0507 PM     HAIL             DE FOREST               43.25N 89.35W
09/21/2016  E0.75 INCH       DANE               WI   BROADCAST MEDIA

            TIME ESTIMATED FROM RADAR. RELAYED VIA TWITTER.

0510 PM     HAIL             DE FOREST               43.25N 89.35W
09/21/2016  E1.00 INCH       DANE               WI   PUBLIC

            RELAYED VIA TWITTER.

&&

JTS
Local storm report, Sep 21, 5:42 PM CDT, 1 hour 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
542 PM CDT WED SEP 21 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0507 PM     HAIL             DE FOREST               43.25N 89.35W
09/21/2016  E0.88 INCH       DANE               WI   TRAINED SPOTTER

            RELAYED VIA FACEBOOK.

&&

JTS
Special weather statement, Sep 21, 6:40 PM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
640 PM CDT WED SEP 21 2016

WIZ056>058-063>065-220030-
JEFFERSON-WAUKESHA-SAUK-COLUMBIA-DODGE-DANE-
640 PM CDT WED SEP 21 2016

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN SAUK...
COLUMBIA...NORTHERN JEFFERSON...SOUTHWESTERN DODGE AND NORTHEASTERN
DANE COUNTIES...

AT 638 PM CDT...STRONG THUNDERSTORMS WERE CLUSTERED NEAR
POYNETTE...OR 7 MILES EAST OF LAKE WISCONSIN...MOVING EAST AT 25 MPH.

DIME SIZE HAIL IS POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
WATERTOWN...BARABOO...PORTAGE...COLUMBUS...WATERLOO...
WISCONSIN DELLS...LAKE WISCONSIN...LODI...LAKE DELTON...POYNETTE...
PARDEEVILLE...FALL RIVER...RIO...CAMBRIA...LEBANON...
ARLINGTON AND WYOCENA.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4335 8965 4364 8985 4363 8917 4322 8853
      4304 8851
TIME...MOT...LOC 2338Z 264DEG 23KT 4338 8942

MRC
Special weather statement, Sep 21, 7:13 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
713 PM CDT WED SEP 21 2016

WIZ056-220045-
SAUK-
713 PM CDT WED SEP 21 2016

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN SAUK COUNTY...

AT 713 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR REEDSBURG...
MOVING EAST AT 25 MPH.

NICKEL SIZE HAIL IS POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
REEDSBURG...NORTH FREEDOM...LA VALLE...ROCK SPRINGS...LOGANVILLE...
IRONTON AND LIME RIDGE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4361 9021 4364 8990 4364 8985 4342 8978
      4344 9019 4355 9019 4356 9020
TIME...MOT...LOC 0013Z 264DEG 22KT 4353 9012

MRC

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 8:14 PM CDTAreal Flood WarningMKXColumbia, Marquette, Sauk12 hr
Sep 21, 9:10 PM CDTRiver Flood WarningMKXSauk7 days
Sep 21, 9:10 PM CDTRiver Flood WarningMKXSauk9 days
Sep 21, 9:11 PM CDTRiver Flood WatchMKXJefferson25 hr
Sep 21, 9:11 PM CDTRiver Flood WatchMKXColumbia5 days
Sep 21, 10:06 PM CDTSpecial Weather StatementMKXIowa, Sauk39 min
Sep 22, 2:35 AM CDTSpecial Weather StatementMKXSauk55 min
Sep 22, 5:53 AM CDTRiver Flood WatchMKXSauk3 days
Sep 22, 3:14 PM CDTRiver Flood WarningMKXColumbia5 days

Nearby

Special Weather Statements in Wisconsin, 2016Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.