Alert archive / Idaho / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 26, NWS Pocatello, ID

August 4, 2019Teton County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Aug 4, 2019, 7:47 PM MDT for Teton County, Idaho. It was in force for 13 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 4, 2019, 7:47 PM MDT (01:47 UTC)
Expired: Aug 4, 2019, 8:00 PM MDT
In force: 13 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Teton County, ID

The radar

The Pocatello radar (KSFX), 140 km from the middle of the area, began a volume at 01:46 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, 1.8 hours before the alert went out and 336 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: 316 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 3502 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 24 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 4, 1:24 PM MDT, 6 hours 23 minutes earlier.

Area forecast discussion, Aug 4, 1:24 PM MDT, 6 hours 23 minutes before

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In the hours before

Special weather statement, Aug 4, 6:04 PM MDT, 1 hour 43 minutes before

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Local storm report, Aug 4, 6:05 PM MDT, 1 hour 42 minutes before

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Special weather statement, Aug 4, 6:29 PM MDT, 1 hour 18 minutes before

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Special weather statement, Aug 4, 6:48 PM MDT, 59 minutes before

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Special weather statement, Aug 4, 6:58 PM MDT, 49 minutes before

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Special weather statement, Aug 4, 7:39 PM MDT, 8 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 4, 6:04 PM MDT	Special Weather Statement	PIH	Cassia	41 min
Aug 4, 6:29 PM MDT	Special Weather Statement	PIH	Fremont	31 min
Aug 4, 6:48 PM MDT	Special Weather Statement	PIH	Power	42 min
Aug 4, 6:58 PM MDT	Special Weather Statement	PIH	Fremont	47 min
Aug 4, 7:39 PM MDT	Special Weather Statement	PIH	Teton	36 min
Aug 5, 2:22 PM MDT	Special Weather Statement	PIH	Cassia	83 min
Aug 5, 2:41 PM MDT	Special Weather Statement	PIH	Clark	79 min
Aug 5, 3:31 PM MDT	Special Weather Statement	PIH	Oneida	59 min
Aug 5, 4:01 PM MDT	Special Weather Statement	PIH	Clark	44 min
Aug 5, 4:16 PM MDT	Special Weather Statement	PIH	Bannock	44 min
Aug 5, 4:22 PM MDT	Special Weather Statement	PIH	Power	38 min
Aug 5, 5:28 PM MDT	Special Weather Statement	PIH	Franklin	47 min
Aug 5, 5:59 PM MDT	Special Weather Statement	PIH	Bear Lake	61 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2019 Every severe thunderstorm warning in 2019

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.