Alert archive / Idaho / High Wind Warnings in 2023

High Wind Warning 3, NWS Boise, ID

August 20, 2023Owyhee County, Twin Falls County, Idaho

NWS Boise, ID issued this high wind warning at Aug 20, 2023, 1:34 AM MDT for Owyhee County, Twin Falls County, Idaho. It took effect at Aug 21, 2023, 9:00 AM MDT. It was in force for 5 hr. 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 20, 2023, 1:34 AM MDT (07:34 UTC)
In effect from: Aug 21, 2023, 9:00 AM MDT
Expired: Aug 21, 2023, 1:49 PM MDT
In force: 5 hr
Issued by: NWS Boise, ID

Counties Owyhee County, ID, Twin Falls County, ID

The radar

The Boise radar (KCBX), 132 km from the middle of the area, began a volume at 07:36 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, 7.6 hours before the alert went out and 348 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: 106 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 2443 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 150 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this high wind warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boise, ID wrote its last area forecast discussion before this high wind warning went out at Aug 19, 9:43 PM MDT, 3 hours 51 minutes earlier.

Area forecast discussion, Aug 19, 9:43 PM MDT, 3 hours 51 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 1:34 AM MDT	Wind Advisory	BOI	Ada, Boise, Camas, Elmore, Gooding, Jerome and 2 more	36 hr
Aug 20, 4:21 PM MDT	Special Weather Statement	BOI	Owyhee	39 min

Nearby

High Wind Warnings in Idaho, 2023 Every high wind warning in 2023

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.