Alert archive / Nevada / Winter Weather Advisories in 2021

Winter Weather Advisory 25, NWS Reno, NV

December 26, 20214 counties in Nevada; Modoc County, California

NWS Reno, NV issued this winter weather advisory at Dec 26, 2021, 2:07 PM PST for 4 counties in Nevada; Modoc County, California. It took effect at Dec 26, 2021, 10:00 PM PST. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Dec 26, 2021, 2:07 PM PST (22:07 UTC)
In effect from: Dec 26, 2021, 10:00 PM PST
Expired: Dec 27, 2021, 7:00 PM PST
In force: 21 hr
Issued by: NWS Reno, NV

Counties Modoc County, CA, Douglas County, NV, Lyon County, NV, Storey County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 31 km from the middle of the area, began a volume at 22:04 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 nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 10.1 hours before the alert went out and 373 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 227 m²/s²
0-3 km storm-relative helicity: 333 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Reno, NV wrote its last area forecast discussion before this winter weather advisory went out at Dec 26, 2:22 AM PST, 11 hours 45 minutes earlier.

Area forecast discussion, Dec 26, 2:22 AM PST, 11 hours 45 minutes before

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In the hours before

Local storm report, Dec 26, 9:33 AM PST, 4 hours 34 minutes 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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The office that day

Everything else NWS Reno, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 25, 10:50 PM PST	Winter Weather Advisory	REV	Douglas, Lyon, Storey, Washoe	5 hr
Dec 26, 1:26 AM PST	Snow Squall Warning	REV	Washoe	94 min
Dec 26, 3:56 AM PST	Special Weather Statement	REV	Pershing, Storey	79 min

Nearby

Winter Weather Advisories in Nevada, 2021 Winter Weather Advisories in California, 2021 Every winter weather advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.