Alert archive / Idaho / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 24, NWS Pocatello, ID
NWS Pocatello, ID issued this severe thunderstorm warning at Oct 7, 2021, 4:41 PM MDT for Cassia County, Power County, Idaho. It was in force for 34 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, 4:41 PM MDT (22:41 UTC)
- Expired
- Oct 7, 2021, 5:15 PM MDT
- In force
- 34 min
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cassia County, ID, Power County, ID
The radar
The Pocatello radar (KSFX), 87 km from the middle of the area, began a volume at 22:45 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
Elko, NV (KLKN), launched 12:00Z, 10.7 hours before the alert went out and 192 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
- 3 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 927 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 134 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
732
WUUS55 KPIH 072241
SVRPIH
IDC031-077-072315-
/O.NEW.KPIH.SV.W.0024.211007T2241Z-211007T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pocatello ID
441 PM MDT Thu Oct 7 2021
The National Weather Service in Pocatello has issued a
* Severe Thunderstorm Warning for...
South central Power County in southeastern Idaho...
East central Cassia County in southeastern Idaho...
* Until 515 PM MDT.
* At 441 PM MDT, a severe thunderstorm was located 8 miles north of
Malta, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Idahome.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4235 11340 4249 11341 4259 11293 4234 11287
TIME...MOT...LOC 2241Z 261DEG 17KT 4242 11332
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JKeyes2 follow-up statements
557
WWUS55 KPIH 072257
SVSPIH
Severe Weather Statement
National Weather Service Pocatello ID
457 PM MDT Thu Oct 7 2021
IDC031-077-072315-
/O.CON.KPIH.SV.W.0024.000000T0000Z-211007T2315Z/
Power ID-Cassia ID-
457 PM MDT Thu Oct 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM MDT
FOR SOUTH CENTRAL POWER AND EAST CENTRAL CASSIA COUNTIES...
At 457 PM MDT, a severe thunderstorm was located 12 miles northeast
of Malta, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe thunderstorm will remain over mainly rural areas of south
central Power and east central Cassia Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4238 11330 4251 11333 4259 11293 4240 11288
TIME...MOT...LOC 2257Z 246DEG 19KT 4245 11323
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
JKeyes878
WWUS55 KPIH 072316
SVSPIH
Severe Weather Statement
National Weather Service Pocatello ID
516 PM MDT Thu Oct 7 2021
IDC031-077-072325-
/O.EXP.KPIH.SV.W.0024.000000T0000Z-211007T2315Z/
Power ID-Cassia ID-
516 PM MDT Thu Oct 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL POWER AND EAST
CENTRAL CASSIA COUNTIES HAS EXPIRED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.
Remember, a New Severe Thunderstorm Warning in effect for
Southwestern Power and East Central Cassia Counties until 545 PM MDT.
LAT...LON 4238 11330 4251 11333 4259 11293 4240 11288
TIME...MOT...LOC 2315Z 261DEG 17KT 4246 11313
$$
JKeyesThe 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, 2:02 PM MDT | Special Weather Statement | PIH | Bannock | 28 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, 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
Severe Thunderstorm Warnings in Idaho, 2021Every severe thunderstorm warning 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.