Alert archive / Idaho / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 22, NWS Pocatello, ID

August 13, 2024Caribou County, Idaho

NWS Pocatello, ID issued this severe thunderstorm warning at Aug 13, 2024, 12:51 PM MDT for Caribou County, Idaho. It was in force for 39 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 13, 2024, 12:51 PM MDT (18:51 UTC)
Expired
Aug 13, 2024, 1:30 PM MDT
In force
39 min
Issued by
NWS Pocatello, ID
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Caribou County, ID

The radar

The Pocatello radar (KSFX), 99 km from the middle of the area, began a volume at 18:55 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, 6.9 hours before the alert went out and 223 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 2024-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 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 2024-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
33 J/kg
Mixed-layer CIN
-277 J/kg
Mixed-layer LCL
1583 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
8 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 13, 3:38 AM MDT, 9 hours 13 minutes earlier.

Area forecast discussion, Aug 13, 3:38 AM MDT, 9 hours 13 minutes before
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In the hours before

Special weather statement, Aug 13, 11:47 AM MDT, 1 hour 4 minutes before
Special Weather Statement
National Weather Service Pocatello ID
1147 AM MDT Tue Aug 13 2024

IDZ055>057-131830-
Eastern Magic Valley ID-Raft River Region ID-
Southern Hills/Albion Mountains ID-
1147 AM MDT Tue Aug 13 2024

...A STRONG THUNDERSTORM WILL IMPACT EASTERN CASSIA COUNTY THROUGH
1230 PM MDT...

At 1144 AM MDT, Doppler radar was tracking a strong thunderstorm over
Elba, or 9 miles southwest of Malta, moving northeast at 15 mph.

HAZARD...Wind gusts in excess of 45 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects is
         possible.

Locations impacted include...
Malta, Elba, Yale Rest Area, and Idahome.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4213 11352 4220 11364 4254 11344 4232 11317
TIME...MOT...LOC 1744Z 212DEG 11KT 4223 11352

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...45 MPH

TAX
Special weather statement, Aug 13, 12:22 PM MDT, 29 minutes before
Special Weather Statement
National Weather Service Pocatello ID
1222 PM MDT Tue Aug 13 2024

IDZ058-062-131915-
Marsh and Arbon Highlands ID-Blackfoot Mountains ID-
1222 PM MDT Tue Aug 13 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN CARIBOU AND EASTERN
BANNOCK COUNTIES THROUGH 115 PM MDT...

At 1221 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Lava Hot Springs, moving northeast at 15 mph.

HAZARD...Wind gusts in excess of 45 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects is
         possible.

Locations impacted include...
Blackfoot Reservoir, Chesterfield, and Bancroft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

If on or near Blackfoot Reservoir, get out of the water and move
indoors or inside a vehicle. Strong winds will create rough chop.
Remember, lightning can strike out to 10 miles from the parent
thunderstorm. If you can hear thunder, you are close enough to be
struck by lightning. Move to safe shelter now! Do not be caught on
the water in a thunderstorm.

&&

LAT...LON 4265 11197 4272 11206 4302 11172 4292 11154
      4281 11150
TIME...MOT...LOC 1821Z 238DEG 14KT 4272 11197

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...45 MPH

TAX
Special weather statement, Aug 13, 12:42 PM MDT, 9 minutes before
Special Weather Statement
National Weather Service Pocatello ID
1242 PM MDT Tue Aug 13 2024

IDZ056-057-131915-
Raft River Region ID-Southern Hills/Albion Mountains ID-
1242 PM MDT Tue Aug 13 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN CASSIA COUNTY
THROUGH 115 PM MDT...

At 1242 PM MDT, Doppler radar was tracking a strong thunderstorm near
Elba, or 10 miles southwest of Malta, moving northeast at 25 mph.

HAZARD...Wind gusts in excess of 45 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to outdoor objects is
         possible.

Locations impacted include...
Malta.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4213 11355 4221 11361 4240 11333 4221 11311
TIME...MOT...LOC 1842Z 245DEG 23KT 4220 11350

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...45 MPH

TAX

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 11:47 AM MDTSpecial Weather StatementPIHCassia43 min
Aug 13, 12:17 PM MDTSevere Thunderstorm WarningPIHCassia, Power43 min
Aug 13, 12:22 PM MDTSpecial Weather StatementPIHCaribou53 min
Aug 13, 12:42 PM MDTSpecial Weather StatementPIHCassia33 min
Aug 13, 12:55 PM MDTSevere Thunderstorm WarningPIHCassia, Power50 min
Aug 13, 12:56 PM MDTSpecial Weather StatementPIHButte64 min
Aug 13, 1:31 PM MDTSpecial Weather StatementPIHCaribou29 min
Aug 13, 1:33 PM MDTSevere Thunderstorm WarningPIHBingham, Butte, Jefferson27 min
Aug 13, 1:39 PM MDTSevere Thunderstorm WarningPIHBannock, Oneida, Power51 min
Aug 13, 2:01 PM MDTTornado WarningPIHBingham, Bonneville, Butte, Jefferson59 min
Aug 13, 2:30 PM MDTSpecial Weather StatementPIHOneida30 min
Aug 13, 2:40 PM MDTSevere Thunderstorm Warning Considerable damage threatPIHBannock, Oneida, Power26 min
Aug 13, 2:56 PM MDTSevere Thunderstorm WarningPIHBingham, Bonneville, Fremont, Jefferson, Madison64 min
Aug 13, 3:17 PM MDTSpecial Weather StatementPIHOneida28 min
Aug 13, 3:31 PM MDTSevere Thunderstorm WarningPIHOneida, Power29 min
Aug 13, 3:40 PM MDTSpecial Weather StatementPIHCaribou35 min
Aug 13, 3:58 PM MDTSpecial Weather StatementPIHMadison47 min
Aug 13, 4:01 PM MDTSpecial Weather StatementPIHOneida29 min
Aug 13, 4:30 PM MDTSpecial Weather StatementPIHFranklin45 min
Aug 13, 4:35 PM MDTSpecial Weather StatementPIHBear Lake55 min
Aug 13, 4:54 PM MDTSpecial Weather StatementPIHBear Lake, Franklin51 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2024Every severe thunderstorm warning in 2024

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.