Alert archive / Idaho / Special Weather Statements in 2021

Special Weather Statement, NWS Pocatello, ID

June 25, 2021Teton County, Idaho

NWS Pocatello, ID issued this special weather statement at Jun 25, 2021, 1:56 PM MDT for Teton County, Idaho. It was in force for 49 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 25, 2021, 1:56 PM MDT (19:56 UTC)
Expired: Jun 25, 2021, 2:45 PM MDT
In force: 49 min
Issued by: NWS Pocatello, ID

County Teton County, ID

The radar

The Pocatello radar (KSFX), 162 km from the middle of the area, began a volume at 19:59 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

Salt Lake City I, UT (KSLC), launched 12:00Z, 7.9 hours before the alert went out and 367 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: 78 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1494 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 78 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 Jun 25, 3:09 AM MDT, 10 hours 47 minutes earlier.

Area forecast discussion, Jun 25, 3:09 AM MDT, 10 hours 47 minutes before

<!doctype html>
<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, Jun 25, 12:04 PM MDT, 1 hour 52 minutes before

Special Weather Statement
National Weather Service Pocatello ID
1204 PM MDT Fri Jun 25 2021

IDZ060-061-063-251900-
Bear Lake Valley ID-Bear River Range ID-Caribou Range ID-
1204 PM MDT Fri Jun 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN FRANKLIN AND
SOUTHWESTERN BEAR LAKE COUNTIES INCLUDING BEAR LAKE UNTIL 100 PM
MDT...

At 1200 PM MDT, Doppler radar was tracking a thunderstorm 8 miles
southwest of Georgetown, or 9 miles northwest of Montpelier, moving
southeast at 5 mph.

Winds in excess of 40 mph and cloud to ground lightning will be
possible with this storm.

Boaters can expect a sudden increase in waves and very choppy waters
which will result in hazardous boating conditions. Boaters are urged
to seek safe harbor if possible.

LAT...LON 4200 11143 4200 11146 4240 11161 4248 11139
      4213 11104 4210 11105
TIME...MOT...LOC 1800Z 333DEG 5KT 4238 11146

McKaughan

Special weather statement, Jun 25, 1:56 PM MDT, 0 minutes before

Special Weather Statement
National Weather Service Pocatello ID
156 PM MDT Fri Jun 25 2021

IDZ065-066-252045-
Centennial Mountains/Island Park ID-Teton Valley ID-
156 PM MDT Fri Jun 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN TETON AND
SOUTHEASTERN FREMONT COUNTIES UNTIL 245 PM MDT...

At 155 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles west of Gibson Meadows, or 12 miles east of Marysville, moving
southeast at 15 mph.

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

Locations impacted include...
Felt and Warm River.

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 4380 11121 4413 11133 4422 11111 4420 11109
      4413 11109 4413 11105 4387 11105
TIME...MOT...LOC 1955Z 328DEG 12KT 4411 11117

McKaughan

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 2:15 AM MDT	Red Flag Warning	PIH	Bannock, Bear Lake, Bonneville, Caribou, Franklin, Oneida and 1 more	19 hr
Jun 25, 12:04 PM MDT	Special Weather Statement	PIH	Bear Lake	56 min
Jun 25, 1:59 PM MDT	Lake Wind Advisory	PIH	Bannock, Bingham, Power	31 hr
Jun 25, 2:47 PM MDT	Special Weather Statement	PIH	Power	43 min

Nearby

Special Weather Statements in Idaho, 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.