Alert archive / Idaho / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 41, NWS Pocatello, ID

August 26, 20204 counties in Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Aug 26, 2020, 6:37 PM MDT for 4 counties in Idaho. It was in force for 38 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: Aug 26, 2020, 6:37 PM MDT (00:37 UTC)
Expired: Aug 26, 2020, 7:15 PM MDT
In force: 38 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Blaine County, ID, Butte County, ID, Lincoln County, ID, Minidoka County, ID

The radar

The Pocatello radar (KSFX), 86 km from the middle of the area, began a volume at 00:38 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 00:00Z, 0.6 hours before the alert went out and 313 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: 102 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 3605 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 110 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 Aug 26, 2:26 PM MDT, 4 hours 11 minutes earlier.

Area forecast discussion, Aug 26, 2:26 PM MDT, 4 hours 11 minutes before

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In the hours before

Local storm report, Aug 26, 2:48 PM MDT, 3 hours 49 minutes before

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Local storm report, Aug 26, 2:54 PM MDT, 3 hours 43 minutes before

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Local storm report, Aug 26, 4:11 PM MDT, 2 hours 26 minutes before

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Special weather statement, Aug 26, 5:39 PM MDT, 58 minutes before

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Special weather statement, Aug 26, 6:11 PM MDT, 26 minutes before

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Special weather statement, Aug 26, 6:26 PM MDT, 11 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 6:11 PM MDT	Special Weather Statement	PIH	Minidoka	49 min
Aug 26, 6:26 PM MDT	Special Weather Statement	PIH	Lincoln	64 min
Aug 26, 7:16 PM MDT	Special Weather Statement	PIH	Blaine	44 min
Aug 26, 7:58 PM MDT	Special Weather Statement	PIH	Butte	62 min
Aug 26, 8:03 PM MDT	Special Weather Statement	PIH	Blaine	57 min
Aug 26, 8:35 PM MDT	Special Weather Statement	PIH	Jefferson	40 min
Aug 26, 8:38 PM MDT	Special Weather Statement	PIH	Blaine	52 min
Aug 26, 8:43 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville, Butte, Jefferson	47 min
Aug 26, 9:26 PM MDT	Severe Thunderstorm Warning	PIH	Bingham, Bonneville, Jefferson	49 min
Aug 26, 10:02 PM MDT	Special Weather Statement	PIH	Madison	43 min
Aug 27, 3:07 PM MDT	Special Weather Statement	PIH	Fremont	38 min
Aug 27, 3:13 PM MDT	Special Weather Statement	PIH	Fremont, Jefferson	62 min
Aug 27, 3:16 PM MDT	Special Weather Statement	PIH	Madison	44 min
Aug 27, 3:18 PM MDT	Special Weather Statement	PIH	Cassia	57 min
Aug 27, 3:22 PM MDT	Special Weather Statement	PIH	Custer	53 min
Aug 27, 3:59 PM MDT	Special Weather Statement	PIH	Teton	16 min
Aug 27, 4:03 PM MDT	Special Weather Statement	PIH	Custer	87 min
Aug 27, 4:23 PM MDT	Special Weather Statement	PIH	Cassia	52 min
Aug 27, 4:36 PM MDT	Special Weather Statement	PIH	Butte	54 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2020 Every severe thunderstorm warning in 2020

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.