Alert archive / Idaho / Flash Flood Watches in 2009

Flash Flood Watch 4, NWS Spokane, WA

June 14, 2009Pend Oreille County, Spokane County, Stevens County, Washington; 6 counties in Idaho

NWS Spokane, WA issued this flash flood watch at Jun 14, 2009, 8:51 AM PDT for Pend Oreille County, Spokane County, Stevens County, Washington; 6 counties in Idaho. It took effect at Jun 14, 2009, 11:00 AM PDT. It was in force for 33 hr.

The area

The counties it named.

The facts

Issued: Jun 14, 2009, 8:51 AM PDT (15:51 UTC)
In effect from: Jun 14, 2009, 11:00 AM PDT
Expired: Jun 15, 2009, 8:00 PM PDT
In force: 33 hr
Issued by: NWS Spokane, WA
Flood severity: None

Counties Benewah County, ID, Bonner County, ID, Boundary County, ID, Kootenai County, ID, Latah County, ID, Shoshone County, ID, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA

The radar

The Spokane radar (KOTX), 62 km from the middle of the area, began a volume at 15:53 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

Boise Airport, ID (KBOI), launched 12:00Z, 3.9 hours before the alert went out and 479 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: 194 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 702 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 57 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 flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Spokane, WA wrote its last area forecast discussion before this flash flood watch went out at Jun 14, 4:57 AM PDT, 3 hours 54 minutes earlier.

Area forecast discussion, Jun 14, 4:57 AM PDT, 3 hours 54 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>

Hazardous weather outlook, Jun 14, 5:54 AM PDT, 2 hours 57 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 Spokane, WA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 13, 8:03 PM PDT	Areal Flood Advisory	OTX	Lincoln	113 min
Jun 14, 3:16 PM PDT	Areal Flood Advisory	OTX	Ferry, Okanogan	4 hr
Jun 13, 5:45 PM PDT	Special Weather Statement	OTX	Bonner	45 min
Jun 13, 11:07 PM PDT	Areal Flood Advisory	OTX	Latah	4 hr
Jun 13, 11:49 PM PDT	Areal Flood Advisory	OTX	Benewah	4 hr

Nearby

Flash Flood Watches in Idaho, 2009 Flash Flood Watches in Washington, 2009 Every flash flood watch in 2009

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.