Alert archive / Idaho / Special Weather Statements in 2021

Special Weather Statement, NWS Pocatello, ID

May 10, 2021Bonneville County, Idaho

NWS Pocatello, ID issued this special weather statement at May 10, 2021, 7:41 PM MDT for Bonneville County, Idaho. It was in force for 64 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 10, 2021, 7:41 PM MDT (01:41 UTC)
Expired: May 10, 2021, 8:45 PM MDT
In force: 64 min
Issued by: NWS Pocatello, ID

County Bonneville County, ID

The radar

The Pocatello radar (KSFX), 75 km from the middle of the area, began a volume at 01:42 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

Boise Airport, ID (KBOI), launched 00:00Z, 1.7 hours before the alert went out and 340 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: 10 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 2673 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 14 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 10, 2:29 PM MDT, 5 hours 12 minutes earlier.

Area forecast discussion, May 10, 2:29 PM MDT, 5 hours 12 minutes before

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In the hours before

Special weather statement, May 10, 4:15 PM MDT, 3 hours 26 minutes before

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Special weather statement, May 10, 4:30 PM MDT, 3 hours 11 minutes before

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Special weather statement, May 10, 6:39 PM MDT, 1 hour 2 minutes before

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Special weather statement, May 10, 7:41 PM MDT, 0 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 10, 6:39 PM MDT	Special Weather Statement	PIH	Caribou	51 min
May 11, 4:09 AM MDT	Frost Advisory	PIH	Bannock, Bingham, Blaine, Bonneville, Butte, Cassia and 6 more	29 hr

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; radar from the NEXRAD Level II archive.