Alert archive / California / Red Flag Warnings in 2010

Red Flag Warning 12, NWS Reno, NV

August 25, 2010Washoe County, Nevada; 7 counties in California

NWS Reno, NV issued this red flag warning at Aug 25, 2010, 10:36 AM PDT for Washoe County, Nevada; 7 counties in California. It took effect at Aug 26, 2010, 11:00 AM PDT. It was in force for 13 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 25, 2010, 10:36 AM PDT (17:36 UTC)
In effect from: Aug 26, 2010, 11:00 AM PDT
Expired: Aug 27, 2010, 12:00 AM PDT
In force: 13 hr
Issued by: NWS Reno, NV

Counties El Dorado County, CA, Lassen County, CA, Modoc County, CA, Nevada County, CA, Placer County, CA, Plumas County, CA, Sierra County, CA, Washoe County, NV

The nearest sounding before it

Medford/Jackson, OR (KMFR), launched 12:00Z, 5.6 hours before the alert went out and 328 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: 2897 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 74 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 red flag warning 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 red flag warning went out at Aug 25, 3:22 AM PDT, 7 hours 14 minutes earlier.

Area forecast discussion, Aug 25, 3:22 AM PDT, 7 hours 14 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 Reno, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 25, 3:38 PM PDT	Lake Wind Advisory	REV	Churchill, Douglas, Lyon, Pershing, Washoe	29 hr

Nearby

Red Flag Warnings in California, 2010 Red Flag Warnings in Nevada, 2010 Every red flag warning 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; the sounding from the Mesonet's radiosonde archive.