Alert archive / Washington / Special Weather Statements in 2023

Special Weather Statement, NWS Spokane, WA

August 7, 2023Lincoln County, Washington

NWS Spokane, WA issued this special weather statement at Aug 7, 2023, 7:46 AM PDT for Lincoln County, Washington. It was in force for 29 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
Aug 7, 2023, 7:46 AM PDT (14:46 UTC)
Expired
Aug 7, 2023, 8:15 AM PDT
In force
29 min
Issued by
NWS Spokane, WA
Hail
0.50 in
Wind
40

County Lincoln County, WA

The radar

The Spokane radar (KOTX), 33 km from the middle of the area, began a volume at 14:47 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

Spokane, WA (KOTX), launched 12:00Z, 2.8 hours before the alert went out and 116 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-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2023-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 248 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2023-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
248 J/kg
Mixed-layer CIN
-125 J/kg
Mixed-layer LCL
1114 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
-1 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Spokane, WA wrote its last area forecast discussion before this special weather statement went out at Aug 7, 6:53 AM PDT, 53 minutes earlier.

Area forecast discussion, Aug 7, 6:53 AM PDT, 53 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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In the hours before

Special weather statement, Aug 7, 7:46 AM PDT, 0 minutes before
Special Weather Statement
National Weather Service Spokane WA
746 AM PDT Mon Aug 7 2023

WAZ036-037-071515-
Spokane Area WA-Northeast Mountains WA-
746 AM PDT Mon Aug 7 2023

...A strong thunderstorm will impact portions of northeastern Lincoln
and south central Stevens Counties through 815 AM PDT...

At 746 AM PDT, Doppler radar was tracking a strong thunderstorm 14
miles northwest of Suncrest, or 26 miles northwest of Spokane, moving
southwest at 10 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects is
         possible.

Locations impacted include...
Little Falls Dam, Wellpinit, and Ford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4799 11782 4793 11775 4771 11802 4790 11822
TIME...MOT...LOC 1446Z 054DEG 10KT 4792 11785

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

JCLEV

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 6, 5:45 PM PDTSpecial Weather StatementOTXDouglas45 min
Aug 6, 6:07 PM PDTSpecial Weather StatementOTXDouglas23 min
Aug 6, 6:35 PM PDTSpecial Weather StatementOTXDouglas40 min
Aug 6, 6:53 PM PDTAreal Flood AdvisoryOTXDouglas3 hr
Aug 7, 6:18 AM PDTAreal Flood AdvisoryOTXStevens117 min
Aug 7, 7:54 AM PDTAreal Flood AdvisoryOTXFerry, Stevens111 min
Aug 7, 8:03 AM PDTAreal Flood AdvisoryOTXStevens117 min
Aug 7, 11:52 AM PDTSpecial Weather StatementOTXAsotin23 min
Aug 7, 11:50 AM PDTSpecial Weather StatementOTXLewis25 min
Aug 7, 12:25 PM PDTSpecial Weather StatementOTXBonner35 min
Aug 7, 2:11 PM PDTSpecial Weather StatementOTXShoshone64 min
Aug 7, 2:20 PM PDTAreal Flood AdvisoryOTXShoshone115 min
Aug 7, 3:05 PM PDTSpecial Weather StatementOTXKootenai55 min

Nearby

Special Weather Statements in Washington, 2023Every special weather statement in 2023

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.