Alert archive / Idaho / Special Weather Statements in 2021

Special Weather Statement, NWS Pocatello, ID

August 2, 2021Franklin County, Idaho

NWS Pocatello, ID issued this special weather statement at Aug 2, 2021, 3:58 PM MDT for Franklin County, Idaho. It was in force for 47 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: Aug 2, 2021, 3:58 PM MDT (21:58 UTC)
Expired: Aug 2, 2021, 4:45 PM MDT
In force: 47 min
Issued by: NWS Pocatello, ID

County Franklin County, ID

The radar

The Salt Lake City radar (KMTX), 109 km from the middle of the area, began a volume at 22:00 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, 10.0 hours before the alert went out and 153 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: 114 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1150 m above ground
0-6 km bulk shear: 6 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

The text

As transmitted.

040 
WWUS85 KPIH 022158
SPSPIH

Special Weather Statement
National Weather Service Pocatello ID
358 PM MDT Mon Aug 2 2021
 
IDZ059-022245-
Franklin/Eastern Oneida Region ID-
358 PM MDT Mon Aug 2 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FRANKLIN COUNTY UNTIL 445
PM MDT...

At 357 PM MDT, Doppler radar was tracking a strong thunderstorm near
Preston, moving east at 15 to 20 mph.

Winds in excess of 40 mph and small hail will be possible with this 
storm.

Locations impacted include...
Riverdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways. Expect low visibilities while driving through storms.

&&

LAT...LON 4213 11195 4218 11195 4221 11181 4212 11179
TIME...MOT...LOC 2157Z 263DEG 8KT 4217 11187 

$$

TW

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 6:31 PM MDT	Areal Flood Advisory	PIH	Cassia, Oneida	119 min
Aug 1, 6:42 PM MDT	Areal Flood Advisory	PIH	Oneida, Power	2 hr
Aug 1, 7:08 PM MDT	Areal Flood Advisory	PIH	Cassia	67 min
Aug 1, 8:31 PM MDT	Areal Flood Advisory	PIH	Oneida, Power	59 min
Aug 1, 8:36 PM MDT	Areal Flood Advisory	PIH	Cassia	54 min
Aug 2, 11:39 AM MDT	Areal Flood Advisory	PIH	Bannock, Caribou	111 min
Aug 2, 11:46 AM MDT	Special Weather Statement	PIH	Bear Lake	59 min
Aug 2, 12:25 PM MDT	Areal Flood Advisory	PIH	Bingham, Bonneville	2 hr
Aug 2, 12:34 PM MDT	Areal Flood Advisory	PIH	Blaine, Butte, Custer	3 hr
Aug 2, 12:35 PM MDT	Special Weather Statement	PIH	Caribou	40 min
Aug 2, 12:37 PM MDT	Special Weather Statement	PIH	Bonneville	53 min
Aug 2, 12:58 PM MDT	Areal Flood Advisory	PIH	Butte, Custer	2 hr
Aug 2, 1:34 PM MDT	Areal Flood Advisory	PIH	Blaine, Custer	116 min
Aug 2, 1:35 PM MDT	Areal Flood Advisory	PIH	Bonneville, Madison, Teton	115 min
Aug 2, 2:05 PM MDT	Areal Flood Advisory	PIH	Custer	115 min
Aug 2, 2:05 PM MDT	Areal Flood Advisory	PIH	Bannock, Power	115 min
Aug 2, 2:12 PM MDT	Special Weather Statement	PIH	Bear Lake	48 min
Aug 2, 2:34 PM MDT	Areal Flood Advisory	PIH	Blaine	116 min
Aug 2, 2:44 PM MDT	Areal Flood Advisory	PIH	Butte, Clark	2 hr
Aug 2, 2:50 PM MDT	Areal Flood Advisory	PIH	Bannock	23 min
Aug 2, 2:58 PM MDT	Areal Flood Advisory	PIH	Blaine, Butte, Custer	2 hr
Aug 2, 3:11 PM MDT	Special Weather Statement	PIH	Butte, Clark, Jefferson	64 min
Aug 2, 3:13 PM MDT	Flash Flood Warning	PIH	Bannock	77 min
Aug 2, 3:28 PM MDT	Areal Flood Advisory	PIH	Bannock, Caribou	62 min
Aug 2, 3:33 PM MDT	Areal Flood Advisory	PIH	Bannock, Oneida	57 min
Aug 2, 3:41 PM MDT	Areal Flood Advisory	PIH	Blaine, Custer	106 min
Aug 2, 3:41 PM MDT	Special Weather Statement	PIH	Jefferson	49 min
Aug 2, 3:45 PM MDT	Special Weather Statement	PIH	Caribou	45 min
Aug 2, 3:50 PM MDT	Special Weather Statement	PIH	Caribou	40 min
Aug 2, 4:00 PM MDT	Areal Flood Advisory	PIH	Blaine	2 hr
Aug 2, 4:04 PM MDT	Special Weather Statement	PIH	Oneida	41 min
Aug 2, 4:11 PM MDT	Special Weather Statement	PIH	Oneida	49 min
Aug 2, 4:14 PM MDT	Areal Flood Advisory	PIH	Butte	68 min
Aug 2, 4:18 PM MDT	Areal Flood Advisory	PIH	Bannock, Caribou, Franklin	96 min
Aug 2, 4:21 PM MDT	Special Weather Statement	PIH	Bear Lake	39 min
Aug 2, 4:27 PM MDT	Areal Flood Advisory	PIH	Blaine	107 min
Aug 2, 4:35 PM MDT	Special Weather Statement	PIH	Jefferson	40 min
Aug 2, 4:41 PM MDT	Special Weather Statement	PIH	Fremont	49 min
Aug 2, 4:44 PM MDT	Special Weather Statement	PIH	Bear Lake	46 min
Aug 2, 4:46 PM MDT	Areal Flood Advisory	PIH	Butte, Custer	69 min
Aug 2, 4:50 PM MDT	Special Weather Statement	PIH	Butte	40 min
Aug 2, 4:58 PM MDT	Areal Flood Advisory	PIH	Bannock, Franklin	56 min
Aug 2, 5:01 PM MDT	Special Weather Statement	PIH	Franklin	44 min
Aug 2, 5:05 PM MDT	Special Weather Statement	PIH	Oneida	40 min
Aug 2, 5:20 PM MDT	Areal Flood Advisory	PIH	Blaine, Lincoln	55 min
Aug 2, 5:25 PM MDT	Special Weather Statement	PIH	Clark	50 min
Aug 2, 5:39 PM MDT	Special Weather Statement	PIH	Minidoka	51 min
Aug 2, 5:46 PM MDT	Special Weather Statement	PIH	Lincoln	59 min
Aug 2, 5:52 PM MDT	Special Weather Statement	PIH	Bingham	83 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.