Alert archive / Iowa / Winter Storm Watches in 2018

Winter Storm Watch 3, NWS Des Moines, IA

February 18, 201823 counties in Iowa

NWS Des Moines, IA issued this winter storm watch at Feb 18, 2018, 3:45 AM CST for 23 counties in Iowa. It took effect at Feb 19, 2018, 6:00 PM CST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 18, 2018, 3:45 AM CST (09:45 UTC)
In effect from: Feb 19, 2018, 6:00 PM CST
Expired: Feb 19, 2018, 3:38 AM CST
In force
Issued by: NWS Des Moines, IA

All 23 counties

Adair County, IA, Adams County, IA, Black Hawk County, IA, Bremer County, IA, Butler County, IA, Clarke County, IA, Dallas County, IA, Decatur County, IA, Grundy County, IA, Hardin County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Marion County, IA, Marshall County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Warren County, IA

The radar

The Des Moines radar (KDMX), 25 km from the middle of the area, began a volume at 09:49 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 winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this winter storm watch went out at Feb 17, 11:42 PM CST, 4 hours 3 minutes earlier.

Area forecast discussion, Feb 17, 11:42 PM CST, 4 hours 3 minutes before

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Hazardous weather outlook, Feb 17, 3:51 PM CST, 11 hours 54 minutes before

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<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.
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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 18, 3:27 AM CST	Wind Advisory	DMX	Adair, Adams, Audubon, Black Hawk, Boone, Bremer and 35 more	11 hr
Feb 18, 3:45 AM CST	Winter Weather Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 42 more	56 hr
Feb 18, 4:02 PM CST	Winter Weather Advisory	DMX	Cass	44 hr

Nearby

Winter Storm Watches in Iowa, 2018 Every winter storm watch 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.