Alert archive / Idaho / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 3, NWS Pocatello, ID
NWS Pocatello, ID issued this severe thunderstorm warning at Jun 4, 2021, 3:59 PM MDT for Clark County, Idaho. It was in force for 46 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
- Jun 4, 2021, 3:59 PM MDT (21:59 UTC)
- Expired
- Jun 4, 2021, 4:45 PM MDT
- In force
- 46 min
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Clark County, ID
The radar
The Pocatello radar (KSFX), 142 km from the middle of the area, began a volume at 21:59 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 |
|---|---|---|---|
| Jun 4, 4:29 PM MDT | HAIL 0.25 | 9 Nw Small, ID | |
| Jun 4, 4:37 PM MDT | HAIL 0.7 | 6 Nnw Small, ID | CORRECTS PREVIOUS HAIL REPORT FROM 6 NNW SMALL. DIME-SIZED HAIL. 45-50 MPH WIND GUSTS. VERY HEAVY RAIN FOR 5 MINUTES. |
| Jun 4, 4:37 PM MDT | HAIL 7 | 6 Nnw Small, ID | DIME-SIZED HAIL. 45-50 MPH WIND GUSTS. VERY HEAVY RAIN FOR 5 MINUTES. |
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 12:00Z, 10.0 hours before the alert went out and 318 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2869 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
327
WUUS55 KPIH 042159
SVRPIH
IDC033-042245-
/O.NEW.KPIH.SV.W.0003.210604T2159Z-210604T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Pocatello ID
359 PM MDT Fri Jun 4 2021
The National Weather Service in Pocatello has issued a
* Severe Thunderstorm Warning for...
Central Clark County in southeastern Idaho...
* Until 445 PM MDT.
* At 359 PM MDT, a severe thunderstorm was located 20 miles northwest
of Dubois, moving east at 25 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...
Spencer, Edie School, Small and Humphrey.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4423 11206 4416 11276 4436 11279 4446 11241
4445 11239 4447 11237 4452 11216
TIME...MOT...LOC 2159Z 253DEG 20KT 4430 11261
HAIL...1.00IN
WIND...60MPH
$$
Huston2 follow-up statements
445
WWUS55 KPIH 042226
SVSPIH
Severe Weather Statement
National Weather Service Pocatello ID
426 PM MDT Fri Jun 4 2021
IDC033-042245-
/O.CON.KPIH.SV.W.0003.000000T0000Z-210604T2245Z/
Clark ID-
426 PM MDT Fri Jun 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM MDT
FOR CENTRAL CLARK COUNTY...
At 425 PM MDT, a severe thunderstorm was located 11 miles west of
Spencer, or 14 miles northwest of Dubois, moving east at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Spencer, Edie School, Small and Humphrey.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4423 11206 4418 11259 4440 11263 4446 11241
4445 11239 4447 11237 4452 11216
TIME...MOT...LOC 2225Z 253DEG 20KT 4434 11241
HAIL...1.00IN
WIND...60MPH
$$
Huston636
WWUS55 KPIH 042246
SVSPIH
Severe Weather Statement
National Weather Service Pocatello ID
446 PM MDT Fri Jun 4 2021
IDC033-042255-
/O.EXP.KPIH.SV.W.0003.000000T0000Z-210604T2245Z/
Clark ID-
446 PM MDT Fri Jun 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CLARK COUNTY HAS
EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire. However small
hail and heavy rain are still possible with this thunderstorm.
Spotters in the path of this storm reported dime-sized hail and
brief heavy rain along with wind gusts of 45-50 mph.
LAT...LON 4423 11206 4418 11259 4440 11263 4446 11241
4445 11239 4447 11237 4452 11216
TIME...MOT...LOC 2245Z 253DEG 20KT 4436 11233
$$
HustonThe office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 1:25 PM MDT | Lake Wind Advisory | PIH | Bannock, Bingham, Power | 32 hr |
| Jun 4, 2:39 PM MDT | Special Weather Statement | PIH | Clark | 51 min |
| Jun 4, 3:11 PM MDT | Special Weather Statement | PIH | Cassia | 49 min |
| Jun 4, 3:40 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 22 min |
| Jun 4, 3:51 PM MDT | Special Weather Statement | PIH | Clark | 39 min |
| Jun 4, 4:10 PM MDT | Special Weather Statement | PIH | Cassia | 50 min |
| Jun 4, 4:25 PM MDT | Special Weather Statement | PIH | Cassia | 50 min |
| Jun 4, 4:38 PM MDT | Severe Thunderstorm Warning | PIH | Cassia | 52 min |
| Jun 4, 4:54 PM MDT | Special Weather Statement | PIH | Clark | 51 min |
| Jun 4, 5:16 PM MDT | Special Weather Statement | PIH | Fremont | 59 min |
| Jun 4, 5:25 PM MDT | Special Weather Statement | PIH | Oneida | 65 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.