Alert archive / Indiana / Areal Flood Advisories in 2021

Areal Flood Advisory 9, NWS Northern Indiana

June 19, 2021LaPorte County, Saint Joseph County, Starke County, Indiana

NWS Northern Indiana issued this areal flood advisory at Jun 19, 2021, 8:14 PM CDT for LaPorte County, Saint Joseph County, Starke County, Indiana. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Jun 19, 2021, 8:14 PM CDT (01:14 UTC)
Expired
Jun 19, 2021, 11:15 PM CDT
In force
3 hr
Issued by
NWS Northern Indiana
Area
Storm-based polygon

Counties LaPorte County, IN, Saint Joseph County, IN, Starke County, IN

The radar

The Northern Indiana radar (KIWX), 73 km from the middle of the area, began a volume at 01:14 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

Detroit, MI (KDTX), launched 00:00Z, 1.2 hours before the alert went out and 293 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, Detroit, MI at 00:00Z on 2021-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 36 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, Detroit, MI at 00:00Z on 2021-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.19395878Sfc1 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
36 J/kg
Mixed-layer CIN
-214 J/kg
Mixed-layer LCL
969 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Northern Indiana wrote its last area forecast discussion before this areal flood advisory went out at Jun 19, 8:03 PM CDT, 11 minutes earlier.

Area forecast discussion, Jun 19, 8:03 PM CDT, 11 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, Jun 19, 1:50 PM CDT, 6 hours 24 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Northern Indiana
250 PM EDT Sat Jun 19 2021

LMZ043-046-201900-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
250 PM EDT Sat Jun 19 2021

This Hazardous Weather Outlook is for the nearshore waters of
southeastern Lake Michigan.

.DAY ONE...This afternoon and tonight.

There is a slight chance for thunderstorms this afternoon.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There are chances for strong to severe thunderstorms late Sunday
afternoon into Sunday night.

INZ004>009-012>018-020-022>027-032>034-MIZ078>081-OHZ001-002-004-005-
015-016-024-025-201900-
St. Joseph IN-Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-Pulaski-
Marshall-Fulton IN-Kosciusko-Whitley-Allen IN-White-Cass IN-Miami-
Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-Cass MI-
St. Joseph MI-Branch-Hillsdale-Williams-Fulton OH-Defiance-Henry-
Paulding-Putnam-Van Wert-Allen OH-
250 PM EDT Sat Jun 19 2021 /150 PM CDT Sat Jun 19 2021/

This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.

.DAY ONE...This afternoon and tonight.

There are low chances for thunderstorms this afternoon into this
evening. Isolated strong to severe storms are possible, with heavy
rain, damaging winds, and hail up to 1 inch in diameter possible.
Confidence is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is risk for severe thunderstorms late Sunday afternoon into
Sunday night. Large hail, damaging winds, and heavy rain are the
main threats. Isolated tornadoes are also possible. Confidence is
medium.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

INZ003-MIZ077-201900-
La Porte-Berrien-
250 PM EDT Sat Jun 19 2021 /150 PM CDT Sat Jun 19 2021/

This Hazardous Weather Outlook is for northern Indiana and
southwest Michigan.

.DAY ONE...This afternoon and tonight.

There are low chances for thunderstorms this afternoon into this
evening. Isolated strong to severe storms are possible, with heavy
rain, damaging winds, and hail up to 1 inch in diameter possible.
Confidence is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

There is risk for severe thunderstorms late Sunday afternoon into
Sunday night. Large hail, damaging winds, and heavy rain are the
main threats. Isolated tornadoes are also possible. Confidence is
medium.

Dangerous swimming conditions are expected on Lake Michigan beaches
Monday and Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

In the hours before

Special weather statement, Jun 19, 6:26 PM CDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service Northern Indiana
726 PM EDT Sat Jun 19 2021

INZ003-004-MIZ077-200000-
La Porte-St. Joseph-Berrien-
726 PM EDT Sat Jun 19 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN ST. JOSEPH...
NORTHEASTERN LA PORTE AND SOUTHERN BERRIEN COUNTIES...

At 725 PM EDT/625 PM CDT/, a strong thunderstorm was located near New
Buffalo, or 7 miles northeast of Michigan City, moving east at 35
mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
South Bend, Michigan City, Buchanan, New Buffalo, New Carlisle, Three
Oaks, Long Beach, Pottawattamie Park, Shorewood-Tower Hill,
Shorewood-Tower Hills-Harbert, Dayton, Galien, Michiana Shores, Grand
Beach, Michiana, Union Pier, New Troy, Harbert, Chain-o-lakes and
Crumstown.

This includes the following highways...
 Interstate 80 in Indiana between mile markers 53 and 72.
 Interstate 94 in Indiana between mile markers 41 and 45.
 Interstate 94 in Michigan between mile markers 0 and 11.

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4176 8691 4183 8678 4189 8669 4187 8630
      4161 8636 4172 8691 4173 8691 4174 8692
TIME...MOT...LOC 2325Z 278DEG 32KT 4180 8680

HAIL...0.25IN
WIND...40MPH

NWS
Special weather statement, Jun 19, 6:39 PM CDT, 1 hour 35 minutes before
Special Weather Statement
National Weather Service Northern Indiana
739 PM EDT Sat Jun 19 2021

MIZ077-078-200030-
Berrien-Cass-
739 PM EDT Sat Jun 19 2021

...A STRONG THUNDERSTORM WILL AFFECT CASS AND EAST CENTRAL BERRIEN
COUNTIES...

At 739 PM EDT, a strong thunderstorm was located near Dowagiac,
moving east at 30 mph.

Wind gusts up to 50 mph and penny size hail are possible with this
storm.

Locations impacted include...
Niles, Dowagiac, Cassopolis, Marcellus, Pokagon, Penn, Vandalia,
Dewey Lake, Dailey, La Grange, Paradise Lake, Calvin Center,
Sumnerville, Indian Lake, Donnell Lake, Sandy Beach, Jones, Diamond
Lake, Shavehead Lake and Wakelee.

Seek shelter until this storm passes.

&&

LAT...LON 4189 8628 4206 8626 4206 8577 4181 8578
TIME...MOT...LOC 2339Z 273DEG 25KT 4197 8618

HAIL...0.75IN
WIND...50MPH

MARSILI

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 19, 7:16 PM CDTSevere Thunderstorm WarningIWXLaPorte, Saint Joseph44 min
Jun 19, 7:20 PM CDTSevere Thunderstorm WarningIWXElkhart, LaGrange, Saint Joseph40 min
Jun 19, 7:51 PM CDTAreal Flood AdvisoryIWXElkhart, LaGrange, Saint Joseph3 hr
Jun 19, 7:53 PM CDTSevere Thunderstorm WarningIWXLaPorte, Marshall, Saint Joseph, Starke52 min
Jun 19, 8:21 PM CDTSevere Thunderstorm WarningIWXSteuben39 min
Jun 19, 8:43 PM CDTSevere Thunderstorm WarningIWXMarshall, Starke47 min
Jun 19, 9:30 PM CDTSevere Thunderstorm WarningIWXPulaski, Starke60 min
Jun 20, 3:49 AM CDTSmall Craft AdvisoryIWX45 hr
Jun 20, 4:12 AM CDTBeach Hazards StatementIWX49 hr
Jun 20, 4:52 PM CDTSevere Thunderstorm WarningIWXLaPorte, Marshall, Saint Joseph, Starke38 min
Jun 20, 4:57 PM CDTSevere Thunderstorm WarningIWXLaPorte, Starke33 min
Jun 20, 5:39 PM CDTSevere Thunderstorm WarningIWXElkhart, Fulton, Kosciusko, Marshall51 min
Jun 20, 5:42 PM CDTSevere Thunderstorm WarningIWXElkhart, Kosciusko, Marshall, Saint Joseph26 min
Jun 20, 5:53 PM CDTSevere Thunderstorm WarningIWXMarshall, Starke22 min
Jun 20, 6:07 PM CDTSevere Thunderstorm WarningIWXElkhart, Kosciusko, Marshall, Saint Joseph23 min
Jun 20, 6:19 PM CDTSevere Thunderstorm WarningIWXElkhart, LaGrange, Noble41 min
Jun 20, 6:47 PM CDTSpecial Marine WarningIWX28 min
Jun 20, 6:49 PM CDTSevere Thunderstorm WarningIWXAllen, DeKalb10 min
Jun 20, 6:29 PM CDTSevere Thunderstorm WarningIWXFulton, Williams31 min
Jun 19, 8:59 PM CDTSevere Thunderstorm WarningIWXHillsdale17 min
Jun 20, 5:58 PM CDTSevere Thunderstorm WarningIWXBerrien, Cass28 min
Jun 20, 6:49 PM CDTSevere Thunderstorm WarningIWXHillsdale26 min
Jun 20, 6:58 PM CDTSevere Thunderstorm WarningIWXBranch, Saint Joseph32 min

Nearby

Areal Flood Advisories in Indiana, 2021Every areal flood advisory in 2021

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.