Alert archive / Idaho / Special Weather Statements in 2013

Special Weather Statement, NWS Spokane, WA

August 9, 2013Latah County, Idaho

NWS Spokane, WA issued this special weather statement at Aug 9, 2013, 8:13 PM PDT for Latah County, Idaho. It was in force for 62 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 9, 2013, 8:13 PM PDT (03:13 UTC)
Expired
Aug 9, 2013, 9:15 PM PDT
In force
62 min
Issued by
NWS Spokane, WA

County Latah County, ID

The radar

The Spokane radar (KOTX), 133 km from the middle of the area, began a volume at 03:12 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, 3.2 hours before the alert went out and 115 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 00:00Z on 2013-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 899 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 00:00Z on 2013-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -26 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
899 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
2684 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-26 m²/s²
0-3 km storm-relative helicity
7 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 Aug 9, 4:58 PM PDT, 3 hours 15 minutes earlier.

Area forecast discussion, Aug 9, 4:58 PM PDT, 3 hours 15 minutes before
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</head>
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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Aug 9, 6:30 AM PDT, 13 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE SPOKANE WA
630 AM PDT FRI AUG 9 2013

IDZ003-026-027-WAZ031>036-043-044-101330-
IDAHO PALOUSE-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-OKANOGAN VALLEY-WATERVILLE PLATEAU-
630 AM PDT FRI AUG 9 2013

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

.DAY ONE...TODAY AND TONIGHT

THERE WILL BE THE POTENTIAL FOR THUNDERSTORMS TODAY AND TONIGHT OVER
EASTERN WASHINGTON AND NORTH CENTRAL IDAHO. SOME STORMS MAY
PRODUCE STRONG GUSTY WINDS. IN GENERAL...THUNDERSTORMS MAY START
OUT QUITE DRY THIS AFTERNOON BUT AS THE LIGHTNING ACTIVITY
INCREASES THEY ARE EXPECTED TO BECOME PROGRESSIVELY WETTER. THE
LIGHTNING ACTIVITY COULD HEIGHTEN POTENTIAL FOR NEW WILDFIRE
STARTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SCATTERED THUNDERSTORMS WILL CONTINUE THROUGH MONDAY...BECOMING
PROGRESSIVELY WETTER SATURDAY AND SUNDAY. SOME STORMS MAY PRODUCE
STRONG GUSTY WINDS. THE CONTINUED LIGHTNING ACTIVITY COULD
HEIGHTEN THE POTENTIAL FOR SOME NEW WILDFIRE STARTS.

IDZ001-002-004-WAZ037-038-101330-
NORTHERN PANHANDLE-COEUR D'ALENE AREA-CENTRAL PANHANDLE MOUNTAINS-
NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS-
630 AM PDT FRI AUG 9 2013

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

.DAY ONE...TODAY AND TONIGHT

THERE WILL BE THE POTENTIAL FOR THUNDERSTORMS TODAY AND TONIGHT OVER
EASTERN WASHINGTON AND NORTHERN IDAHO. SOME STORMS MAY PRODUCE
STRONG GUSTY WINDS. IN GENERAL...THUNDERSTORMS WILL BE WET...BUT
THE INCREASE IN LIGHTNING ACTIVITY COULD HEIGHTEN THE POTENTIAL
FOR SOME NEW WILDFIRE STARTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THUNDERSTORMS WILL CONTINUE SATURDAY THROUGH MONDAY OVER EASTERN
WASHINGTON AND NORTHERN IDAHO. SOME STORMS MAY PRODUCE STRONG
GUSTY WINDS. IN GENERAL...THUNDERSTORMS WILL BE WET...BUT THE
INCREASE IN LIGHTNING ACTIVITY COULD HEIGHTEN THE POTENTIAL FOR
SOME NEW WILDFIRE STARTS.

WAZ041-042-101330-
WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-
630 AM PDT FRI AUG 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

THERE WILL BE THE POTENTIAL FOR THUNDERSTORMS TODAY AND TONIGHT OVER
NORTH CENTRAL WASHINGTON. SOME THUNDERSTORMS MAY PRODUCE STRONG
GUSTY WINDS. IN GENERAL...THUNDERSTORMS MAY START OUT QUITE DRY
THIS AFTERNOON BUT AS THE LIGHTNING ACTIVITY INCREASES THEY ARE
EXPECTED TO BECOME PROGRESSIVELY WETTER. THE LIGHTNING ACTIVITY
COULD HEIGHTEN POTENTIAL FOR NEW WILDFIRE STARTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SCATTERED THUNDERSTORMS WILL CONTINUE THROUGH MONDAY...BECOMING
PROGRESSIVELY WETTER SATURDAY AND SUNDAY. THUNDERSTORMS MAY
PRODUCE STRONG GUSTY WINDS. FLASH FLOODING WITH MUDSLIDES AND
DEBRIS FLOWS WILL BE POSSIBLE OVER RECENT BURN SCARS.

In the hours before

Special weather statement, Aug 9, 8:13 PM PDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE WA
813 PM PDT FRI AUG 9 2013

IDZ003-004-100415-
LATAH ID-
813 PM PDT FRI AUG 9 2013

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  EASTERN LATAH COUNTY IN THE PANHANDLE OF IDAHO

UNTIL 915 PM PDT

AT 808 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES NORTH OF KENDRICK..MOVING NORTHWEST AT 5
MPH.

HAIL UP TO THE SIZE OF PENNIES IS EXPECTED WITH THIS STORM...ALONG
WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. WATCH FOR REDUCTIONS
IN VISIBILITY AS WELL AS POSSIBLE PONDING OF WATER ON ROADS FROM
THE HEAVY RAIN.

LOCATIONS IMPACTED INCLUDE...
   DEARY...
   TROY...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 4661 11670 4667 11676 4683 11688 4700 11659
      4665 11644 4663 11659 4663 11662 4659 11668
      4659 11670
TIME...MOT...LOC 0312Z 145DEG 5KT 4670 11665

JCOTE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 9:57 PM PDTSpecial Weather StatementOTXGarfield33 min
Aug 9, 11:45 PM PDTFlash Flood WarningOTXChelan2 hr
Aug 9, 8:57 PM PDTSpecial Weather StatementOTXBenewah63 min
Aug 9, 9:13 PM PDTAreal Flood AdvisoryOTXLatah, Nez Perce107 min

Nearby

Special Weather Statements in Idaho, 2013Every special weather statement in 2013

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.