Alert archive / Texas / River Flood Warnings in 2018

River Flood Warning 101, NWS Houston/Galveston, TX

December 9, 2018Harris County, Texas

NWS Houston/Galveston, TX issued this river flood warning at Dec 9, 2018, 3:00 AM CST for Harris County, Texas. It took effect at Dec 10, 2018, 6:00 PM CST. It was in force for 36 hr.

The area

The counties it named.

The facts

Issued: Dec 9, 2018, 3:00 AM CST (09:00 UTC)
In effect from: Dec 10, 2018, 6:00 PM CST
Expired: Dec 12, 2018, 6:00 AM CST
In force: 36 hr
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Flood severity: Minor

County Harris County, TX

The radar

The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 08:58 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 river

Written for the forecast point San Jacinto River near Sheldon (SHLT2). The gauge peaked at 7.20 ft at Dec 9, 2018, 7:00 AM CST.

Action stage: 8 ft
Minor stage: 10 ft
Moderate stage: 13 ft
Major stage: 15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 08072050, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

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

NWS Houston/Galveston, TX wrote its last area forecast discussion before this river flood warning went out at Dec 8, 2:52 PM CST, 12 hours 8 minutes earlier.

Area forecast discussion, Dec 8, 2:52 PM CST, 12 hours 8 minutes before

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Hazardous weather outlook, Dec 8, 3:37 PM CST, 11 hours 23 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>

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 8, 9:36 PM CST	River Flood Warning	HGX	Montgomery	46 hr
Dec 8, 10:04 PM CST	River Flood Warning	HGX	Waller	24 hr
Dec 9, 4:06 AM CST	Low Water Advisory	HGX		15 hr

Nearby

River Flood Warnings in Texas, 2018 Every river flood warning in 2018

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; the gauge from the NWS water service and the USGS.