Alert archive / Washington / Special Weather Statements in 2021

Special Weather Statement, NWS Spokane, WA

June 15, 2021Whitman County, Washington

NWS Spokane, WA issued this special weather statement at Jun 15, 2021, 12:43 AM PDT for Whitman County, Washington. It was in force for 32 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: Jun 15, 2021, 12:43 AM PDT (07:43 UTC)
Expired: Jun 15, 2021, 1:15 AM PDT
In force: 32 min
Issued by: NWS Spokane, WA

County Whitman County, WA

The radar

The Spokane radar (KOTX), 126 km from the middle of the area, began a volume at 07:43 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 00:00Z, 7.7 hours before the alert went out and 161 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: 2457 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Jun 14, 9:54 PM PDT, 2 hours 49 minutes earlier.

Area forecast discussion, Jun 14, 9:54 PM PDT, 2 hours 49 minutes before

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<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Hazardous weather outlook, Jun 14, 4:36 AM PDT, 20 hours 7 minutes before

Hazardous Weather Outlook
National Weather Service Spokane WA
436 AM PDT Mon Jun 14 2021

IDZ001>004-026-027-WAZ031>038-041>044-151200-
Northern Panhandle-Coeur d'Alene Area-Idaho Palouse-
Central Panhandle Mountains-Lewiston Area-
Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-
Lower Garfield and Asotin Counties-Washington Palouse-
Moses Lake Area-Upper Columbia Basin-Spokane Area-
Northeast Mountains-Okanogan Highlands-Wenatchee Area-
East Slopes Northern Cascades-Okanogan Valley-Waterville Plateau-
436 AM PDT Mon Jun 14 2021

This Hazardous Weather Outlook is for portions of North Idaho...
North Central Idaho...Central Washington...East Central
Washington...North Central Washington...Northeast Washington and
Southeast Washington.

.DAY ONE...TODAY AND TONIGHT

Scattered thunderstorms are expected over Eastern Washington and
North Idaho Monday night. Some storms may become strong producing
frequent lightning, gusty winds, brief heavy rain, and possible
hail.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

A chance of thunderstorms will to linger into Tuesday over
most of Eastern Washington and North Idaho.

In the hours before

Special weather statement, Jun 15, 12:43 AM PDT, 0 minutes before

Special Weather Statement
National Weather Service Spokane WA
1243 AM PDT Tue Jun 15 2021

WAZ031>033-150815-
Northeast Blue Mountains WA-Washington Palouse WA-
Lower Garfield and Asotin Counties WA-
1243 AM PDT Tue Jun 15 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN GARFIELD AND CENTRAL
WHITMAN COUNTIES UNTIL 115 AM PDT...

At 1242 AM PDT, Doppler radar was tracking a strong thunderstorm near
Pomeroy, moving north at 60 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Pomeroy, Endicott, Dusty, Dodge, Diamond, Almota and Mayview.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 4642 11772 4644 11772 4644 11774 4647 11774
      4647 11785 4652 11786 4703 11775 4687 11719
      4640 11764
TIME...MOT...LOC 0742Z 199DEG 52KT 4652 11772

GKOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 12:43 AM PDT	Severe Thunderstorm Warning	OTX	Lincoln, Stevens	47 min
Jun 15, 3:00 AM PDT	Severe Thunderstorm Warning	OTX	Pend Oreille, Spokane	30 min
Jun 15, 3:29 AM PDT	Special Weather Statement	OTX	Whitman	46 min
Jun 15, 2:10 PM PDT	Special Weather Statement	OTX	Spokane	50 min
Jun 15, 3:11 PM PDT	Special Weather Statement	OTX	Spokane	49 min
Jun 15, 2:52 AM PDT	Special Weather Statement	OTX	Boundary	38 min
Jun 15, 5:23 AM PDT	Special Weather Statement	OTX	Benewah	52 min

Nearby

Special Weather Statements in Washington, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.