Alert archive / Idaho / Special Weather Statements in 2021
Special Weather Statement, NWS Pocatello, ID
NWS Pocatello, ID issued this special weather statement at Aug 5, 2021, 7:13 PM MDT for Jefferson County, Idaho. It was in force for 47 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 5, 2021, 7:13 PM MDT (01:13 UTC)
- Expired
- Aug 5, 2021, 8:00 PM MDT
- In force
- 47 min
- Issued by
- NWS Pocatello, ID
- Hail
- 0.00 in
- Wind
- 50
County Jefferson County, ID
The radar
The Pocatello radar (KSFX), 105 km from the middle of the area, began a volume at 01:12 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 5, 7:30 PM MDT | TSTM WND GST 58 | 1 N Roberts, ID | MESONET STATION ROB - ROBERTS. THUNDERSTORM OUTFLOW WINDS. |
| Aug 5, 7:35 PM MDT | TSTM WND GST 57 | 11 W Osgood, ID | MESONET STATION KET - KETTLE BUTTE. THUNDERSTORM OUTFLOW WINDS. |
| Aug 5, 7:40 PM MDT | TSTM WND GST 55 | 9 Ssw Mud Lake, ID | MESONET STATION ROV - ROVER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Boise Airport, ID (KBOI), launched 00:00Z, 1.2 hours before the alert went out and 294 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.
- Mixed-layer CAPE
- 484 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 3441 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted.
837
WWUS85 KPIH 060113
SPSPIH
Special Weather Statement
National Weather Service Pocatello ID
713 PM MDT Thu Aug 5 2021
IDZ052-053-067>069-060200-
Arco/Mud Lake Desert ID-Upper Snake River Plain ID-
Lost River Range ID-Beaverhead/Lemhi Highlands ID-
Lost River Valleys ID-
713 PM MDT Thu Aug 5 2021
...STRONG THUNDERSTORMS AND THUNDERSTORM OUTFLOW WINDS MOVING
NORTHEAST INTO THE MUD LAKE AND DUBOIS REGION THROUGH 800 PM MDT...
At 711 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 21 miles northeast of Darlington to near
Northwest Idaho National Laboratory to 9 miles west of Roberts.
Movement was northeast at 40 MPH.
HAZARD...Wind gusts up to 50 MPH, pea size hail, and frequent
lightning. This line of storms has a history of producing
damaging winds in excess of 60 MPH.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Dubois, Terreton, Roberts, Mud Lake, Hamer, Egin, Northwest Inl,
Monteview, Plano, Small, Sage Junction, Kettle Butte, Edie School,
Lone Pine and southern Saint Anthony Sand Dunes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4424 11217 4393 11175 4349 11242 4374 11279
4393 11336 4424 11313 4423 11281 4439 11281
TIME...MOT...LOC 0111Z 229DEG 36KT 4406 11316 4392 11268 4368 11232
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
$$
KSmithThe office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 6:01 PM MDT | Special Weather Statement | PIH | Bingham | 44 min |
| Aug 5, 6:03 PM MDT | Special Weather Statement | PIH | Twin Falls | 27 min |
| Aug 5, 6:13 PM MDT | Special Weather Statement | PIH | Custer | 47 min |
| Aug 5, 6:19 PM MDT | Special Weather Statement | PIH | Butte | 41 min |
| Aug 5, 6:38 PM MDT | Severe Thunderstorm Warning | PIH | Bannock, Bingham, Bonneville, Butte, Clark, Custer and 1 more | 37 min |
| Aug 5, 7:52 PM MDT | Special Weather Statement | PIH | Clark, Fremont | 38 min |
| Aug 5, 8:47 PM MDT | Special Weather Statement | PIH | Jefferson | 28 min |
| Aug 6, 2:09 AM MDT | Special Weather Statement | PIH | Power | 51 min |
| Aug 6, 7:33 AM MDT | Special Weather Statement | PIH | Bingham | 27 min |
| Aug 6, 8:11 AM MDT | Special Weather Statement | PIH | Bear Lake, Franklin | 49 min |
| Aug 6, 10:16 AM MDT | Special Weather Statement | PIH | Camas | 44 min |
| Aug 6, 11:27 AM MDT | Special Weather Statement | PIH | Custer | 48 min |
| Aug 6, 12:24 PM MDT | Special Weather Statement | PIH | Blaine | 66 min |
| Aug 6, 2:17 PM MDT | Special Weather Statement | PIH | Butte | 43 min |
| Aug 6, 2:20 PM MDT | Special Weather Statement | PIH | Bonneville, Jefferson, Madison, Teton | 40 min |
Nearby
Special Weather Statements in Idaho, 2021Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.