Alert archive / Idaho / Special Weather Statements in 2021

Special Weather Statement, NWS Pocatello, ID

May 16, 2021Cassia County, Idaho

NWS Pocatello, ID issued this special weather statement at May 16, 2021, 6:29 PM MDT for Cassia County, Idaho. It was in force for 91 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: May 16, 2021, 6:29 PM MDT (00:29 UTC)
Expired: May 16, 2021, 8:00 PM MDT
In force: 91 min
Issued by: NWS Pocatello, ID

County Cassia County, ID

The nearest sounding before it

Elko, NV (KLKN), launched 00:00Z, 0.5 hours before the alert went out and 178 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: 1451 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 232 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 May 16, 1:26 PM MDT, 5 hours 3 minutes earlier.

Area forecast discussion, May 16, 1:26 PM MDT, 5 hours 3 minutes before

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In the hours before

Special weather statement, May 16, 3:07 PM MDT, 3 hours 22 minutes before

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Special weather statement, May 16, 3:37 PM MDT, 2 hours 52 minutes before

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Special weather statement, May 16, 4:58 PM MDT, 1 hour 31 minutes before

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Special weather statement, May 16, 5:06 PM MDT, 1 hour 23 minutes before

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Local storm report, May 16, 5:44 PM MDT, 45 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 16, 6:31 PM MDT	Special Weather Statement	PIH	Power	89 min
May 16, 6:54 PM MDT	Severe Thunderstorm Warning	PIH	Bannock, Bingham, Blaine, Cassia, Lincoln, Minidoka and 1 more	66 min
May 17, 2:02 PM MDT	Lake Wind Advisory	PIH	Bannock, Bingham, Power	30 hr
May 17, 5:37 PM MDT	Special Weather Statement	PIH	Bear Lake	38 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.