Alert archive / Idaho / Special Weather Statements in 2021
Special Weather Statement, NWS Pocatello, ID
NWS Pocatello, ID issued this special weather statement at Oct 7, 2021, 2:02 PM MDT for Bannock County, Idaho. It was in force for 28 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
- Oct 7, 2021, 2:02 PM MDT (20:02 UTC)
- Expired
- Oct 7, 2021, 2:30 PM MDT
- In force
- 28 min
- Issued by
- NWS Pocatello, ID
- Hail
- 0.50 in
- Wind
- 40
County Bannock County, ID
The radar
The Pocatello radar (KSFX), 56 km from the middle of the area, began a volume at 20:04 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, 8.0 hours before the alert went out and 222 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
- 40 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 1145 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
179
WWUS85 KPIH 072002
SPSPIH
Special Weather Statement
National Weather Service Pocatello ID
202 PM MDT Thu Oct 7 2021
IDZ058-062-072030-
Marsh and Arbon Highlands ID-Blackfoot Mountains ID-
202 PM MDT Thu Oct 7 2021
...A strong thunderstorm will impact portions of northwestern
Caribou, northeastern Bannock, east central Power and southeastern
Bingham Counties through 230 PM MDT...
At 201 PM MDT, Doppler radar was tracking a strong thunderstorm over
Inkom, or 8 miles north of McCammon, moving northeast at 20 to 25
mph.
HAZARD...Winds in excess of 35 to 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Eastern Pocatello, McCammon, Chesterfield Reservoir, Inkom, Portneuf
Gap, Fort Hall Mount Putnam, Chesterfield, Bancroft and Mink Creek
Pass.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4260 11237 4276 11249 4313 11193 4276 11167
TIME...MOT...LOC 2001Z 240DEG 49KT 4276 11225
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
$$
TWThe office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 7, 1:36 PM MDT | Special Weather Statement | PIH | Bannock | 24 min |
| Oct 7, 2:04 PM MDT | Flash Flood Watch | PIH | Bear Lake, Caribou, Cassia, Franklin, Oneida | 33 hr |
| Oct 7, 2:35 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 25 min |
| Oct 7, 2:40 PM MDT | Flash Flood Warning | PIH | Cassia | 2 hr |
| Oct 7, 3:00 PM MDT | Special Weather Statement | PIH | Cassia | 45 min |
| Oct 7, 3:54 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 51 min |
| Oct 7, 4:41 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Power | 34 min |
| Oct 7, 5:14 PM MDT | Severe Thunderstorm Warning | PIH | Cassia, Power | 31 min |
| Oct 7, 5:44 PM MDT | Special Weather Statement | PIH | Power | 31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.