Alert archive / Idaho / Special Weather Statements in 2021

Special Weather Statement, NWS Pocatello, ID

May 25, 2021Madison County, Idaho

NWS Pocatello, ID issued this special weather statement at May 25, 2021, 5:21 PM MDT for Madison County, Idaho. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 25, 2021, 5:21 PM MDT (23:21 UTC)
Expired: May 25, 2021, 5:45 PM MDT
In force: 24 min
Issued by: NWS Pocatello, ID

County Madison County, ID

The radar

The Pocatello radar (KSFX), 98 km from the middle of the area, began a volume at 23:22 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

Riverton, WY (KRIW), launched 12:00Z, 11.4 hours before the alert went out and 277 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: 1827 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

928 
WWUS85 KPIH 252321
SPSPIH

Special Weather Statement
National Weather Service Pocatello ID
521 PM MDT Tue May 25 2021
 
IDZ053-062>065-252345-
Big Hole Mountains ID-Upper Snake River Plain ID-Teton Valley ID-
Caribou Range ID-Blackfoot Mountains ID-
521 PM MDT Tue May 25 2021

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL TETON...SOUTH
CENTRAL FREMONT...SOUTHEASTERN JEFFERSON...NORTH CENTRAL BONNEVILLE
AND MADISON COUNTIES UNTIL 545 PM MDT...

At 520 PM MDT, Doppler radar was tracking a strong thunderstorm over
Archer, or near Lorenzo, moving northeast at 70 mph.

Brief moderate rain, small hail and wind gusts to 40 mph are 
possible with this storm as it moves northeast from the Rigby area.

Locations impacted include...
Rexburg, Rigby, Ririe Reservoir, Lorenzo, Sugar City, Ucon, Menan,
Teton, Ririe, Roberts, Lewisville, Parker, Archer, Egin, St Anthony,
Plano, Green Canyon Hot Springs, Newdale, Thornton and southern Saint
Anthony Sand Dunes.

LAT...LON 4340 11171 4375 11220 4408 11180 4363 11123
TIME...MOT...LOC 2320Z 229DEG 60KT 4371 11177 

$$

TW

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 11:58 AM MDT	Special Weather Statement	PIH	Power	47 min
May 25, 12:46 PM MDT	Special Weather Statement	PIH	Bingham, Butte, Jefferson, Power	59 min
May 25, 1:40 PM MDT	Special Weather Statement	PIH	Caribou	35 min
May 25, 1:50 PM MDT	Special Weather Statement	PIH	Bonneville, Jefferson, Madison	55 min
May 25, 2:25 PM MDT	Special Weather Statement	PIH	Custer	80 min
May 25, 2:28 PM MDT	Special Weather Statement	PIH	Butte	62 min
May 25, 2:35 PM MDT	Special Weather Statement	PIH	Bingham	55 min
May 25, 3:39 PM MDT	Special Weather Statement	PIH	Fremont	51 min
May 25, 3:46 PM MDT	Special Weather Statement	PIH	Bingham	44 min
May 25, 4:05 PM MDT	Special Weather Statement	PIH	Blaine	55 min
May 25, 4:25 PM MDT	Special Weather Statement	PIH	Camas	50 min
May 25, 4:40 PM MDT	Special Weather Statement	PIH	Bingham, Jefferson	50 min
May 25, 5:12 PM MDT	Special Weather Statement	PIH	Blaine	48 min
May 25, 5:31 PM MDT	Special Weather Statement	PIH	Clark	44 min
May 25, 5:55 PM MDT	Special Weather Statement	PIH	Bonneville, Fremont, Madison, Teton	65 min

Nearby

Special Weather Statements in Idaho, 2021 Every special weather statement 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.