Alert archive / Washington / Special Weather Statements in 2012

Special Weather Statement, NWS Spokane, WA

July 12, 2012Garfield County, Washington

NWS Spokane, WA issued this special weather statement at Jul 12, 2012, 10:25 PM PDT for Garfield County, Washington. It was in force for 50 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: Jul 12, 2012, 10:25 PM PDT (05:25 UTC)
Expired: Jul 12, 2012, 11:15 PM PDT
In force: 50 min
Issued by: NWS Spokane, WA

County Garfield County, WA

The radar

The Pendleton radar (KPDT), 124 km from the middle of the area, began a volume at 05:27 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, 5.4 hours before the alert went out and 169 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: 3637 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Jul 12, 5:29 PM PDT, 4 hours 56 minutes earlier.

Area forecast discussion, Jul 12, 5:29 PM PDT, 4 hours 56 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.
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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, Jul 12, 5:03 AM PDT, 17 hours 22 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPOKANE WA
503 AM PDT THU JUL 12 2012

IDZ001>004-026-027-WAZ031>033-036>038-041>043-131215-
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-
SPOKANE AREA-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS-
WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY-
503 AM PDT THU JUL 12 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO...
NORTH CENTRAL IDAHO...NORTH CENTRAL WASHINGTON...NORTHEAST
WASHINGTON AND SOUTHEAST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE THREAT FOR THUNDERSTORMS WILL INCREASE FRIDAY INTO THE
WEEKEND. SOME OF THE THUNDERSTORMS ON SATURDAY MAY BE CAPABLE OF
PRODUCING LOCALLY HEAVY RAIN OVER THE NORTHERN CASCADES...EASTERN
WASHINGTON AND NORTHERN IDAHO. MORE WET...SLOW MOVING THUNDERSTORMS
WILL BE POSSIBLE ON SUNDAY...NAMELY OVER THE IDAHO PANHANDLE AND
NORTHEAST WASHINGTON. SLOW MOVING THUNDERSTORMS THIS WEEKEND MAY
HAVE THE POTENTIAL TO PRODUCE LOCALIZED FLASH FLOODING.
THUNDERSTORMS OVER STEEP TERRAIN MAY PRODUCE DEBRIS FLOWS OR ROCK
SLIDES.

WAZ034-035-044-131215-
MOSES LAKE AREA-UPPER COLUMBIA BASIN-WATERVILLE PLATEAU-
503 AM PDT THU JUL 12 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
WASHINGTON AND EAST CENTRAL WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 12, 10:25 PM PDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
1025 PM PDT THU JUL 12 2012

WAZ031>033-130615-
WHITMAN WA-GARFIELD WA-
1025 PM PDT THU JUL 12 2012

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTH CENTRAL WHITMAN COUNTY IN EASTERN WASHINGTON
  NORTHERN GARFIELD COUNTY IN SOUTHEAST WASHINGTON

UNTIL 1115 PM PDT

AT 1020 PM PDT...STORM SPOTTERS REPORTED A STRONG THUNDERSTORM NEAR
DAYTON..MOVING NORTHEAST AT 30 MPH. HALF INCH HAIL WAS REPORTED IN
DAYTON WITH THIS STORM...AND IT IS POSSIBLE THAT HAIL UP TO AN INCH
IN DIAMETER COULD OCCUR WITH THIS THUNDERSTORM. IF THIS THUNDERSTORM
HOLDS TOGETHER...IT WILL REACH THE POMEROY AND DODGE AREAS AROUND 11
PM.

LAT...LON 4634 11768 4637 11768 4640 11772 4646 11775
      4646 11786 4648 11787 4652 11787 4679 11770
      4658 11725 4632 11761
TIME...MOT...LOC 0523Z 216DEG 23KT 4637 11781

KOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 12:43 AM PDT	Special Weather Statement	OTX	Grant	47 min
Jul 13, 1:56 AM PDT	Special Weather Statement	OTX	Grant	49 min
Jul 13, 2:45 PM PDT	Red Flag Warning	OTX		43 hr

Nearby

Special Weather Statements in Washington, 2012 Every special weather statement in 2012

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.