Alert archive / Idaho / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 50, NWS Pocatello, ID

August 26, 2022Bingham County, Bonneville County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Aug 26, 2022, 5:08 PM MDT for Bingham County, Bonneville County, Idaho. It was in force for 37 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
Aug 26, 2022, 5:08 PM MDT (23:08 UTC)
Expired
Aug 26, 2022, 5:45 PM MDT
In force
37 min
Issued by
NWS Pocatello, ID
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bingham County, ID, Bonneville County, ID

The radar

The Pocatello radar (KSFX), 59 km from the middle of the area, began a volume at 23:11 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, 11.1 hours before the alert went out and 281 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-pSkew-T log-p diagram, Salt Lake City I, UT at 12:00Z on 2022-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 74 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 12:00Z on 2022-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
74 J/kg
Mixed-layer CIN
-375 J/kg
Mixed-layer LCL
2418 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
6 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 severe thunderstorm warning 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 severe thunderstorm warning went out at Aug 26, 2:47 PM MDT, 2 hours 21 minutes earlier.

Area forecast discussion, Aug 26, 2:47 PM MDT, 2 hours 21 minutes before
Area Forecast Discussion
National Weather Service Pocatello ID
247 PM MDT Fri Aug 26 2022

.SHORT TERM...Tonight through Sun afternoon. Thunderstorm activity
continues this afternoon and early tonight, which is a
continuation of the morning convection that never really let up.
On Sat, a cold front will add to the mix of weather, with the
strongest wind seen in quite a while, after two monsoonal push
events. Gusts to 45 to 50 mph with the front and sustained wind
over 30 mph in the Arco Desert expected, a Wind Advisory has been
issued for that zone. A Lake Wind Advisory has been issued for the
American Falls Reservoir for much of the day. In addition, there
are Red Flag Warnings out for selected zones where the humidity
will combine with wind. The front will also trigger some
thunderstorm activity, but nowhere near to what has been
experienced in the previous couple of days and what is expected
tonight. Wind and thunderstorms should be over by 2100 or so, and
Sunday temperatures should be cooler, and the wind will not be as
windy, but will be in the breezy to windy category for the eastern
Magic Valley and Snake River plain. Messick

.LONG TERM...Sunday night through next Friday. Models continue to
have better consensus in the long term. Model clusters support high
pressure through the period, with ridging starting to build in
Sunday night and the ridge axis moving east of our area Thursday
into Friday. With southwest flow on Thursday, models show Thursday
as the hottest day. The NBM model is forecasting record to near
record temperatures Thursday for most of our area. The ECMWF extreme
forecast index (EFI) is showing well above normal temperatures on
Thursday and Friday. The GFS model and, to a lesser degree, the
ECMWF model continue to show a weak trough moving up from Nevada
Tuesday into Wednesday bringing a slight chance of convective
activity. Otherwise, expect very dry conditions, overall light
winds, and mostly clear skies during the rest of the period.
Temperatures look to be in the 80s in the mountains and 90s in the
valleys on Thursday and Friday. Temperatures are approaching 100
degrees for Shoshone on Thursday.
Wyatt

&&

.AVIATION...Look for vicinity showers and thunderstorms for all TAF
sites, except BYI, this afternoon into early evening. KSUN, KPIH,
and, to a lesser degree, KIDA have the best chances for convective
activity on stations. Look for gusts of around 20 kts for all TAF
sites this afternoon. Wyatt

&&

.FIRE WEATHER...Extreme low fuels, very windy conditions, and very
low humidity will bring Red Flag conditions to the Salmon-Challis
NF, the southern portion of the Sawtooth NF, and the adjoining
BLM lands. For the Sawtooth NF, the wind and low humidity develop
before noon, while it takes a while in the central Idaho
mountains. The front will also generate some limited thunderstorm
activity. In the post-frontal regime, temperatures are cooled by
around 7 deg F, which should keep most afternoon humidity above
the 15 percent threshold and end the Red Flag conditions. Wind
will still be hitting critical fire weather thresholds, so the
humidity may need another look for Sun. Messick

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Wind Advisory from 2 PM to 8 PM MDT Saturday for IDZ052.

Lake Wind Advisory from noon to 9 PM MDT Saturday for IDZ054.

Red Flag Warning from 10 AM to 8 PM MDT Saturday for IDZ427.

Red Flag Warning from 3 PM to 8 PM MDT Saturday for IDZ475-476.

&&

In the hours before

Special weather statement, Aug 26, 3:47 PM MDT, 1 hour 21 minutes before
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Special weather statement, Aug 26, 3:53 PM MDT, 1 hour 15 minutes before
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Special weather statement, Aug 26, 4:29 PM MDT, 39 minutes before
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Local storm report, Aug 26, 4:40 PM MDT, 28 minutes before
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Special weather statement, Aug 26, 4:51 PM MDT, 17 minutes before
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Special weather statement, Aug 26, 4:58 PM MDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 1:46 PM MDTRed Flag WarningPIHBingham, Blaine, Bonneville, Butte, Cassia, Clark and 13 more30 hr
Aug 26, 1:47 PM MDTLake Wind AdvisoryPIHBannock, Bingham, Power30 hr
Aug 26, 1:47 PM MDTWind AdvisoryPIHBingham, Bonneville, Butte, Custer, Fremont, Jefferson and 1 more30 hr
Aug 26, 2:14 PM MDTSpecial Weather StatementPIHBlaine31 min
Aug 26, 2:20 PM MDTSpecial Weather StatementPIHOneida25 min
Aug 26, 2:29 PM MDTSevere Thunderstorm WarningPIHBannock, Oneida, Power31 min
Aug 26, 2:42 PM MDTSpecial Weather StatementPIHCaribou48 min
Aug 26, 2:52 PM MDTSevere Thunderstorm WarningPIHBannock, Caribou23 min
Aug 26, 2:58 PM MDTSevere Thunderstorm WarningPIHBannock, Oneida32 min
Aug 26, 3:00 PM MDTSevere Thunderstorm WarningPIHBear Lake, Caribou, Franklin30 min
Aug 26, 3:11 PM MDTSpecial Weather StatementPIHBlaine34 min
Aug 26, 3:26 PM MDTSpecial Weather StatementPIHBear Lake34 min
Aug 26, 3:28 PM MDTSevere Thunderstorm WarningPIHBannock, Oneida19 min
Aug 26, 3:47 PM MDTSpecial Weather StatementPIHOneida28 min
Aug 26, 3:53 PM MDTSpecial Weather StatementPIHButte37 min
Aug 26, 4:29 PM MDTSpecial Weather StatementPIHJefferson46 min
Aug 26, 4:51 PM MDTSpecial Weather StatementPIHBear Lake24 min
Aug 26, 4:58 PM MDTSpecial Weather StatementPIHMadison32 min
Aug 26, 5:28 PM MDTSpecial Weather StatementPIHFremont32 min
Aug 26, 5:43 PM MDTSpecial Weather StatementPIHBonneville32 min
Aug 26, 5:58 PM MDTSpecial Weather StatementPIHTeton47 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2022Every severe thunderstorm warning in 2022

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.