Alert archive / Idaho / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 27, NWS Pocatello, ID

May 30, 2018Cassia County, Minidoka County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at May 30, 2018, 5:46 PM MDT for Cassia County, Minidoka County, Idaho. It was in force for 29 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: May 30, 2018, 5:46 PM MDT (23:46 UTC)
Expired: May 30, 2018, 6:15 PM MDT
In force: 29 min
Issued by: NWS Pocatello, ID
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cassia County, ID, Minidoka County, ID

The radar

The Pocatello radar (KSFX), 97 km from the middle of the area, began a volume at 23:48 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

Elko, NV (KLKN), launched 12:00Z, 11.8 hours before the alert went out and 195 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1950 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 100 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 May 30, 1:42 PM MDT, 4 hours 4 minutes earlier.

Area forecast discussion, May 30, 1:42 PM MDT, 4 hours 4 minutes before

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In the hours before

Special weather statement, May 30, 3:01 PM MDT, 2 hours 45 minutes before

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Special weather statement, May 30, 3:12 PM MDT, 2 hours 34 minutes before

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Local storm report, May 30, 3:19 PM MDT, 2 hours 27 minutes before

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Special weather statement, May 30, 4:08 PM MDT, 1 hour 38 minutes before

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Special weather statement, May 30, 4:40 PM MDT, 1 hour 6 minutes before

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Special weather statement, May 30, 5:28 PM MDT, 18 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
May 29, 6:31 PM MDT	Special Weather Statement	PIH	Caribou	89 min
May 29, 7:13 PM MDT	Special Weather Statement	PIH	Fremont	62 min
May 29, 7:52 PM MDT	Special Weather Statement	PIH	Caribou	53 min
May 30, 7:25 AM MDT	River Flood Advisory	PIH	Custer	3 days
May 30, 10:54 AM MDT	River Flood Warning	PIH	Blaine	50 hr
May 30, 1:34 PM MDT	Special Weather Statement	PIH	Bonneville	26 min
May 30, 1:37 PM MDT	Special Weather Statement	PIH	Cassia	23 min
May 30, 1:49 PM MDT	Severe Thunderstorm Warning	PIH	Fremont, Madison, Teton	26 min
May 30, 2:01 PM MDT	Severe Thunderstorm Warning	PIH	Cassia	44 min
May 30, 2:19 PM MDT	Special Weather Statement	PIH	Bannock	41 min
May 30, 2:32 PM MDT	Special Weather Statement	PIH	Bannock	28 min
May 30, 2:39 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Caribou, Oneida, Power	51 min
May 30, 2:43 PM MDT	Special Weather Statement	PIH	Power	32 min
May 30, 3:01 PM MDT	Special Weather Statement	PIH	Power	74 min
May 30, 3:12 PM MDT	Special Weather Statement	PIH	Bonneville	33 min
May 30, 3:12 PM MDT	Severe Thunderstorm Warning	PIH	Caribou	48 min
May 30, 4:08 PM MDT	Special Weather Statement	PIH	Caribou	37 min
May 30, 4:40 PM MDT	Special Weather Statement	PIH	Cassia	50 min
May 30, 5:28 PM MDT	Special Weather Statement	PIH	Cassia	47 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2018 Every severe thunderstorm warning in 2018

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.