Alert archive / Illinois / Areal Flood Warnings in 2019

Areal Flood Warning 41, NWS St. Louis, MO

August 12, 20196 counties in Illinois

NWS St. Louis, MO issued this areal flood warning at Aug 12, 2019, 4:48 PM CDT for 6 counties in Illinois. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 12, 2019, 4:48 PM CDT (21:48 UTC)
Expired: Aug 13, 2019, 1:45 AM CDT
In force: 9 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

Counties Bond County, IL, Clinton County, IL, Fayette County, IL, Macoupin County, IL, Marion County, IL, Montgomery County, IL

The radar

The St Louis radar (KLSX), 117 km from the middle of the area, began a volume at 21:52 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 forecasters said that day

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

NWS St. Louis, MO wrote its last area forecast discussion before this areal flood warning went out at Aug 12, 3:28 PM CDT, 1 hour 20 minutes earlier.

Area forecast discussion, Aug 12, 3:28 PM CDT, 1 hour 20 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, Aug 12, 3:43 PM CDT, 1 hour 5 minutes before

Hazardous Weather Outlook
National Weather Service Saint Louis MO
343 PM CDT Mon Aug 12 2019

ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-131200-
Adams IL-Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO-
Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO-Gasconade MO-
Greene IL-Iron MO-Jefferson MO-Jersey IL-Knox MO-Lewis MO-Lincoln MO-
Macoupin IL-Madison IL-Madison MO-Marion IL-Marion MO-Moniteau MO-
Monroe IL-Monroe MO-Montgomery IL-Montgomery MO-Osage MO-Pike IL-
Pike MO-Ralls MO-Randolph IL-Reynolds MO-Saint Charles MO-
Saint Clair IL-Saint Francois MO-Saint Louis City MO-Saint Louis MO-
Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO-
343 PM CDT Mon Aug 12 2019

This Hazardous Weather Outlook is for portions of eastern and
central Missouri as well as west central and southwest Illinois.

.DAY ONE...Tonight.

A combination of dangerous heat and humidity is expected into this
evening. Heat index values will reach 105 to 110 degrees across most
of the area. Please refer to the Heat Advisory for additional
information.

Thunderstorms are likely, mainly this evening, with a chance
lingering through tonight. Some severe storms are possible,
especially north of Interstate 70, with damaging winds the primary
threat.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

There is a chance for thunderstorms across southeast Missouri and
southern Illinois Tuesday morning. The chance for thunderstorms
returns to the region Thursday night through Sunday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this evening.

Tilly

In the hours before

Local storm report, Aug 12, 2:00 PM CDT, 2 hours 48 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>

Local storm report, Aug 12, 2:06 PM CDT, 2 hours 42 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>

Local storm report, Aug 12, 3:39 PM CDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
339 PM CDT MON AUG 12 2019

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

0333 PM     HEAVY RAIN       1 NNW DELLWOOD          38.77N 90.29W
08/12/2019  M5.25 INCH       ST. LOUIS          MO   TRAINED SPOTTER

            MEASURED ADJACENT TO THE ST. LOUIS COMMUNITY
            COLLEGE FLORISSANT VALLEY CAMPUS.

&&

KANOFSKY

Local storm report, Aug 12, 3:47 PM CDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
347 PM CDT MON AUG 12 2019

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

1118 AM     HEAVY RAIN       1 S ALMA                38.71N 88.91W
08/12/2019  M5.59 INCH       MARION             IL   PUBLIC

            RAINFALL FROM MIDNIGHT TO 1120AM.

&&

KANOFSKY

Local storm report, Aug 12, 3:49 PM CDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
349 PM CDT MON AUG 12 2019

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

0200 PM     HEAVY RAIN       GRANITE CITY            38.72N 90.13W
08/12/2019  M9.02 INCH       MADISON            IL   PUBLIC

            STORM TOTAL.

&&

CARNEY

Local storm report, Aug 12, 4:40 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
440 PM CDT MON AUG 12 2019

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

0439 PM     HEAVY RAIN       FLORISSANT              38.80N 90.32W
08/12/2019  M6.53 INCH       ST. LOUIS          MO   TRAINED SPOTTER

            STORM TOTAL.

&&

CARNEY

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 11, 9:17 PM CDT	Flash Flood Watch	LSX	Audrain, Boone, Callaway, Franklin, Gasconade, Jefferson and 13 more	13 hr
Aug 12, 3:15 AM CDT	Flash Flood Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	6 hr
Aug 12, 4:09 AM CDT	Flash Flood Warning	LSX	Audrain, Boone	6 hr
Aug 12, 5:17 AM CDT	Flash Flood Warning	LSX	Callaway, Lincoln, Montgomery, Pike, Warren	5 hr
Aug 12, 9:10 AM CDT	Areal Flood Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	6 hr
Aug 12, 2:38 AM CDT	Flash Flood Warning	LSX	Bond, Clinton, Fayette, Macoupin, Marion, Montgomery	8 hr
Aug 12, 5:11 AM CDT	Flash Flood Warning	LSX	Clinton, Saint Clair, Washington	5 hr
Aug 12, 10:31 AM CDT	Areal Flood Warning	LSX	Bond, Clinton, Fayette, Macoupin, Marion, Montgomery	3 hr
Aug 12, 10:40 AM CDT	Areal Flood Warning	LSX	Bond, Clinton, Fayette, Macoupin, Marion, Montgomery	17 min
Aug 12, 1:28 PM CDT	Areal Flood Warning	LSX	Bond, Clinton, Fayette, Macoupin, Marion, Montgomery	3 hr
Aug 12, 3:01 PM CDT	Areal Flood Warning	LSX	Madison	9 hr

Nearby

Areal Flood Warnings in Illinois, 2019 Every areal flood warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.