Alert archive / Idaho / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 13, NWS Boise, ID

May 31, 2023Elmore County, Owyhee County, Idaho

NWS Boise, ID issued this severe thunderstorm warning at May 31, 2023, 4:24 PM MDT for Elmore County, Owyhee County, Idaho. It was in force for 36 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 31, 2023, 4:24 PM MDT (22:24 UTC)
Expired: May 31, 2023, 5:00 PM MDT
In force: 36 min
Issued by: NWS Boise, ID
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Elmore County, ID, Owyhee County, ID

The radar

The Boise radar (KCBX), 67 km from the middle of the area, began a volume at 22:28 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, 10.4 hours before the alert went out and 269 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: 7 J/kg
Mixed-layer CIN: -260 J/kg
Mixed-layer LCL: 1690 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 3:15 PM MDT	Special Weather Statement	BOI		45 min
May 31, 3:34 PM MDT	Special Weather Statement	BOI	Owyhee	26 min
May 31, 3:56 PM MDT	Special Weather Statement	BOI	Twin Falls	49 min
May 31, 4:13 PM MDT	Special Weather Statement	BOI	Gooding	32 min
May 31, 4:45 PM MDT	Areal Flood Advisory	BOI	Owyhee	2 hr
May 31, 4:45 PM MDT	Special Weather Statement	BOI	Gooding	45 min
May 31, 4:55 PM MDT	Severe Thunderstorm Warning	BOI	Elmore, Gooding, Owyhee, Twin Falls	50 min
May 31, 5:11 PM MDT	Areal Flood Advisory	BOI	Elmore, Gooding, Owyhee, Twin Falls	2 hr
May 31, 5:34 PM MDT	Special Weather Statement	BOI	Gooding	41 min
May 31, 5:58 PM MDT	Special Weather Statement	BOI	Camas	47 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2023 Every severe thunderstorm 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.