Alert archive / Montana / Special Weather Statements in 2021

Special Weather Statement, NWS Great Falls, MT

January 17, 2021Judith Basin County, Montana

NWS Great Falls, MT issued this special weather statement at Jan 17, 2021, 9:48 PM MST for Judith Basin County, Montana. It was in force for 117 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 17, 2021, 9:48 PM MST (04:48 UTC)
Expired: Jan 17, 2021, 11:45 PM MST
In force: 117 min
Issued by: NWS Great Falls, MT

County Judith Basin County, MT

The radar

The Great Falls radar (KTFX), 60 km from the middle of the area, began a volume at 04:48 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 text

As transmitted.

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What forecasters said that day

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

NWS Great Falls, MT wrote its last area forecast discussion before this special weather statement went out at Jan 17, 8:47 PM MST, 1 hour 1 minute earlier.

Area forecast discussion, Jan 17, 8:47 PM MST, 1 hour 1 minute before

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<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.
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In the hours before

Special weather statement, Jan 17, 9:48 PM MST, 0 minutes before

Special Weather Statement
National Weather Service Great Falls MT
948 PM MST Sun Jan 17 2021

MTZ012-013-050-051-054-180645-
Chouteau-Cascade-Fergus-Judith Basin-Meagher-
948 PM MST Sun Jan 17 2021

...AN AREA OF HEAVY SNOW WILL AFFECT NORTH CENTRAL MONTANA
THROUGH MIDNIGHT...

At 945 PM MST, an area of heavy snow was located from near
Belt, eastward to Stanford, moving southeast at 15 mph.

Winds in excess of 30 mph are possible with this area of heavy snow.

This includes the following portions of Highway 200 from east of
Great Falls to Lewistown...and Highway 89 from Belt to White Sulphur
Springs.

Snowfall rates near 1 inch per hour along with visibility below one
half mile is expected in this region through Midnight.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time when traveling.

LAT...LON 4734 11128 4742 11047 4686 10966 4675 11103
TIME...MOT...LOC 0445Z 315DEG 11KT 4724 11059

Brusda

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 18, 1:23 AM MST	High Wind Watch	TFX		26 hr
Jan 18, 1:23 AM MST	High Wind Warning	TFX		55 hr
Jan 18, 2:12 AM MST	Special Weather Statement	TFX	Judith Basin	2 hr
Jan 18, 5:23 AM MST	Winter Storm Warning	TFX		16 hr

Nearby

Special Weather Statements in Montana, 2021 Every special weather statement 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; radar from the NEXRAD Level II archive.