Alert archive / Idaho / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 60, NWS Pocatello, ID

July 15, 2015Butte County, Custer County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Jul 15, 2015, 12:59 PM MDT for Butte County, Custer County, Idaho. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 15, 2015, 12:59 PM MDT (18:59 UTC)
Expired: Jul 15, 2015, 1:45 PM MDT
In force: 46 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon

Counties Butte County, ID, Custer County, ID

The radar

The Pocatello radar (KSFX), 129 km from the middle of the area, began a volume at 19:01 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, 7.0 hours before the alert went out and 386 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: 95 J/kg
Mixed-layer CIN: -252 J/kg
Mixed-layer LCL: 2487 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 15, 9:18 AM MDT, 3 hours 41 minutes earlier.

Area forecast discussion, Jul 15, 9:18 AM MDT, 3 hours 41 minutes before

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In the hours before

Special weather statement, Jul 15, 12:32 PM MDT, 27 minutes before

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</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.
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      <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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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 12:32 PM MDT	Special Weather Statement	PIH	Butte	43 min
Jul 15, 1:40 PM MDT	Severe Thunderstorm Warning	PIH	Butte, Custer	50 min
Jul 15, 2:32 PM MDT	Special Weather Statement	PIH	Butte	58 min
Jul 15, 2:51 PM MDT	Special Weather Statement	PIH	Clark	39 min
Jul 15, 3:01 PM MDT	Special Weather Statement	PIH	Fremont	44 min
Jul 15, 3:31 PM MDT	Special Weather Statement	PIH	Jefferson, Madison	44 min
Jul 15, 3:42 PM MDT	Special Weather Statement	PIH	Clark, Fremont	48 min
Jul 15, 3:54 PM MDT	Tornado Warning	PIH	Fremont, Jefferson, Madison	51 min
Jul 15, 4:02 PM MDT	Special Weather Statement	PIH	Bear Lake, Franklin	58 min
Jul 15, 4:32 PM MDT	Special Weather Statement	PIH	Power	58 min
Jul 15, 4:38 PM MDT	Special Weather Statement	PIH	Cassia	67 min
Jul 15, 4:41 PM MDT	Severe Thunderstorm Warning	PIH	Cassia, Oneida, Power	49 min
Jul 15, 4:51 PM MDT	Special Weather Statement	PIH	Fremont	39 min
Jul 15, 4:56 PM MDT	Special Weather Statement	PIH	Bingham	49 min
Jul 15, 5:28 PM MDT	Severe Thunderstorm Warning	PIH	Bingham	30 min
Jul 15, 5:35 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Oneida, Power	55 min
Jul 15, 5:43 PM MDT	Severe Thunderstorm Warning	PIH	Caribou	32 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2015 Every severe thunderstorm warning in 2015

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.