Alert archive / Missouri / Flash Flood Watches in 2010

Flash Flood Watch 16, NWS St. Louis, MO

September 21, 20104 counties in Missouri; Adams County, Brown County, Illinois

NWS St. Louis, MO issued this flash flood watch at Sep 21, 2010, 3:41 AM CDT for 4 counties in Missouri; Adams County, Brown County, Illinois. It took effect at Sep 21, 2010, 7:00 PM CDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Sep 21, 2010, 3:41 AM CDT (08:41 UTC)
In effect from
Sep 21, 2010, 7:00 PM CDT
Expired
Sep 22, 2010, 3:31 AM CDT
In force
9 hr
Issued by
NWS St. Louis, MO
Flood severity
None

Counties Adams County, IL, Brown County, IL, Knox County, MO, Lewis County, MO, Marion County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 161 km from the middle of the area, began a volume at 08:43 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 flash flood watch 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 flash flood watch went out at Sep 21, 3:33 AM CDT, 8 minutes earlier.

Area forecast discussion, Sep 21, 3:33 AM CDT, 8 minutes before
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Hazardous weather outlook, Sep 20, 3:16 PM CDT, 12 hours 25 minutes before
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<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>
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 21, 11:17 AM CDTRiver Flood WarningLSXCallaway, Osage8 days
Sep 21, 11:17 AM CDTRiver Flood WarningLSXGasconade, Montgomery9 days
Sep 21, 11:17 AM CDTRiver Flood WarningLSXGasconade, Montgomery8 days

Nearby

Flash Flood Watches in Missouri, 2010Flash Flood Watches in Illinois, 2010Every flash flood watch in 2010

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.