Alert archive / Idaho / Snow Squall Warnings in 2021
Snow Squall Warning 2, NWS Pocatello, ID
NWS Pocatello, ID issued this snow squall warning at Feb 26, 2021, 3:56 PM MST for 4 counties in Idaho. It was in force for 64 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
- Feb 26, 2021, 3:56 PM MST (22:56 UTC)
- Expired
- Feb 26, 2021, 5:00 PM MST
- In force
- 64 min
- Issued by
- NWS Pocatello, ID
- Area
- Storm-based polygon
Counties Blaine County, ID, Cassia County, ID, Oneida County, ID, Power County, ID
The radar
The Pocatello radar (KSFX), 88 km from the middle of the area, began a volume at 22:56 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, 10.9 hours before the alert went out and 191 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
- 1346 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 233 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
446
WWUS55 KPIH 262259
SQWPIH
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Pocatello ID
356 PM MST Fri Feb 26 2021
IDC013-031-071-077-270000-
/O.NEW.KPIH.SQ.W.0002.210226T2256Z-210227T0000Z/
Blaine ID-Oneida ID-Power ID-Cassia ID-
356 PM MST Fri Feb 26 2021
The National Weather Service in Pocatello has issued a
* Snow Squall Warning for...
Southeastern Blaine County in central Idaho...
Western Oneida County in southeastern Idaho...
Southwestern Power County in southeastern Idaho...
Eastern Cassia County in southeastern Idaho...
* Until 500 PM MST.
* At 356 PM MST, a dangerous snow squall was located along a line
extending from 6 miles southeast of Lake Walcott to near Elba,
moving east at 35 mph.
HAZARD...Extremely poor visibility in heavy snow and blowing snow.
Wind gusts greater than 30 mph.
SOURCE...Radar and webcams.
IMPACT...Dangerous life-threatening travel, especially along
Interstates 84 and 86.
* The combination of heavy snow and very strong winds will lead to a
rapid drop in visibility to one-quarter mile or less. Roads may
also quickly become slick.
Locations impacted include...
American Falls, Malta, Neeley, Lake Walcott, Rockland, Cold Water
Rest Area, Fort Hall Bannock Peak, Juniper, Massacre Rocks, Sweetzer
Summit, Sublett Reservoir, Roy and Bridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider avoiding or delaying travel until the snow squall passes
your location. If you must travel, use extra caution and allow extra
time. Rapid changes in visibility and slick road conditions may lead
to accidents.
Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4208 11340 4281 11336 4281 11264 4208 11266
TIME...MOT...LOC 2256Z 273DEG 31KT 4260 11330 4219 11363
$$
Valle2 follow-up statements
151
WWUS55 KPIH 262328
SQWPIH
Snow Squall Warning
National Weather Service Pocatello ID
426 PM MST Fri Feb 26 2021
IDC013-031-071-077-270000-
/O.CON.KPIH.SQ.W.0002.000000T0000Z-210227T0000Z/
Blaine ID-Oneida ID-Power ID-Cassia ID-
426 PM MST Fri Feb 26 2021
...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 500 PM MST FOR
SOUTHEASTERN BLAINE...WESTERN ONEIDA...SOUTHWESTERN POWER AND EASTERN
CASSIA COUNTIES...
At 426 PM MST, a dangerous snow squall was located along a line
extending from 6 miles west of Rockland to 9 miles south of Malta,
moving east at 35 mph.
HAZARD...Extremely poor visibility heavy snow and blowing snow. Wind
gusts greater than 30 mph.
SOURCE...Radar and webcams.
IMPACT...Dangerous life-threatening , especially along Interstates
84 and 86.
Locations impacted include...
American Falls, Malta, Neeley, Lake Walcott, Rockland, Cold Water
Rest Area, Fort Hall Bannock Peak, Juniper, Massacre Rocks, Sweetzer
Summit, Sublett Reservoir, Roy and Bridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider avoiding or delaying travel until the snow squall passes
your location. If you must travel, use extra caution and allow extra
time. Rapid changes in visibility and slick road conditions may lead
to accidents.
Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4208 11340 4281 11336 4281 11264 4208 11266
TIME...MOT...LOC 2326Z 273DEG 31KT 4259 11299 4218 11333
$$
Valle932 WWUS55 KPIH 262358 SQWPIH Snow Squall Warning National Weather Service Pocatello ID 458 PM MST Fri Feb 26 2021 IDC013-031-071-077-270008- /O.EXP.KPIH.SQ.W.0002.000000T0000Z-210227T0000Z/ Blaine ID-Oneida ID-Power ID-Cassia ID- 458 PM MST Fri Feb 26 2021 ...THE SNOW SQUALL WARNING FOR SOUTHEASTERN BLAINE...WESTERN ONEIDA...SOUTHWESTERN POWER AND EASTERN CASSIA COUNTIES WILL EXPIRE AT 500 PM MST... The snow squall which prompted the warning has exited the area. Therefore, the snow squall warning will be allowed to expire. Areas of blowing snow and snow-covered roads will continue to make travel difficult. LAT...LON 4208 11340 4281 11336 4281 11264 4208 11266 TIME...MOT...LOC 2358Z 273DEG 31KT 4258 11268 4217 11302 $$ Valle
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 26, 3:06 PM MST | Snow Squall Warning | PIH | Blaine, Cassia, Minidoka | 54 min |
Nearby
Snow Squall Warnings in Idaho, 2021Every snow squall 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.