Alert archive / Idaho / Special Weather Statements in 2016

Special Weather Statement, NWS Pocatello, ID

August 6, 2016Custer County, Idaho

NWS Pocatello, ID issued this special weather statement at Aug 6, 2016, 12:18 PM MDT for Custer County, Idaho. It was in force for 42 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 6, 2016, 12:18 PM MDT (18:18 UTC)
Expired: Aug 6, 2016, 1:00 PM MDT
In force: 42 min
Issued by: NWS Pocatello, ID

County Custer County, ID

The radar

The Boise radar (KCBX), 117 km from the middle of the area, began a volume at 18:21 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, 6.3 hours before the alert went out and 111 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: 67 J/kg
Mixed-layer CIN: -487 J/kg
Mixed-layer LCL: 2605 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 164 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 Pocatello, ID wrote its last area forecast discussion before this special weather statement went out at Aug 6, 8:53 AM MDT, 3 hours 25 minutes earlier.

Area forecast discussion, Aug 6, 8:53 AM MDT, 3 hours 25 minutes before

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<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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In the hours before

Special weather statement, Aug 6, 11:41 AM MDT, 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
1141 AM MDT SAT AUG 6 2016

IDZ018-031-032-062045-
SAWTOOTH MOUNTAINS ID-BIG AND LITTLE WOOD RIVER REGION ID-
LOST RIVER/PASHIMEROI ID-
1141 AM MDT SAT AUG 6 2016

...WINDS IN EXCESS OF 40 MPH FOR NORTHERN CUSTER AND NORTHWESTERN
BLAINE COUNTIES UNTIL 245 PM MDT...

AT 1140 AM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 37 MILES NORTH OF STANLEY
TO 14 MILES SOUTHEAST OF SUNBEAM...AND MOVING NORTHEAST AT 35 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
CHALLIS...STANLEY...SUNBEAM...CLAYTON...MORGAN CREEK SUMMIT...
MEADOW PEAK...REDFISH LAKE...BAYHORSE LAKE...BONANZA...
BIG CREEK CAMPGROUND...BANNER SUMMIT...TWIN PEAKS SUMMIT...
SEAFOAM RANGER STATION AND MIDDLE FORK LODGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 4475 11421 4476 11409 4449 11381 4444 11358
      4438 11361 4396 11495 4405 11505 4416 11503
      4433 11529 4447 11522 4458 11531 4477 11509
      4472 11495 4481 11482 4465 11474 4465 11463
      4458 11457 4459 11448 4475 11440 4488 11422
TIME...MOT...LOC 1740Z 211DEG 29KT 4474 11512 4411 11453

JKEYES

Special weather statement, Aug 6, 12:18 PM MDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
1218 PM MDT SAT AUG 6 2016

IDZ018-031-061900-
SAWTOOTH MOUNTAINS ID-BIG AND LITTLE WOOD RIVER REGION ID-
1218 PM MDT SAT AUG 6 2016

...HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH AFFECTING WEST
CENTRAL CUSTER AND NORTHWESTERN BLAINE COUNTIES UNTIL 100 PM MDT...

AT 1217 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 9
MILES NORTHEAST OF ATLANTA...MOVING NORTHEAST AT 25 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GALENA LODGE...GALENA SUMMIT AND SMILEY CREEK AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4394 11497 4396 11499 4397 11497 4399 11499
      4425 11472 4399 11438 4379 11483 4379 11485
      4382 11485 4383 11491 4385 11495 4385 11497
      4386 11499 4387 11497 4389 11499 4392 11500
TIME...MOT...LOC 1817Z 227DEG 23KT 4387 11495

NP/KEYES

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 5, 9:09 PM MDT	Red Flag Warning	PIH	Bingham, Bonneville, Butte, Clark, Custer, Fremont and 7 more	24 hr
Aug 6, 11:41 AM MDT	Special Weather Statement	PIH	Custer	3 hr
Aug 6, 2:53 PM MDT	Special Weather Statement	PIH	Bingham, Power	37 min
Aug 6, 3:06 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Power	26 min
Aug 6, 3:47 PM MDT	Special Weather Statement	PIH	Power	58 min

Nearby

Special Weather Statements in Idaho, 2016 Every special weather statement in 2016

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.