Alert archive / Idaho / Heat Advisories in 2021

Heat Advisory 1, NWS Boise, ID

June 1, 2021Gooding County, Jerome County, Twin Falls County, Idaho

NWS Boise, ID issued this heat advisory at Jun 1, 2021, 2:10 PM MDT for Gooding County, Jerome County, Twin Falls County, Idaho. It took effect at Jun 3, 2021, 10:00 AM MDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Jun 1, 2021, 2:10 PM MDT (20:10 UTC)
In effect from: Jun 3, 2021, 10:00 AM MDT
Expired: Jun 3, 2021, 9:00 PM MDT
In force: 11 hr
Issued by: NWS Boise, ID

Counties Gooding County, ID, Jerome County, ID, Twin Falls County, ID

The radar

The Pocatello radar (KSFX), 162 km from the middle of the area, began a volume at 20:14 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 12:00Z, 8.2 hours before the alert went out and 306 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: 3126 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 44 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 heat advisory 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 heat advisory went out at Jun 1, 9:23 AM MDT, 4 hours 47 minutes earlier.

Area forecast discussion, Jun 1, 9:23 AM MDT, 4 hours 47 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
Jun 1, 2:10 PM MDT	Excessive Heat Warning	BOI	Ada, Canyon, Elmore, Gem, Owyhee, Payette and 1 more	55 hr

Nearby

Heat Advisories in Idaho, 2021 Every heat advisory 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.