Alert archive / Idaho / High Wind Watches in 2021

High Wind Watch 3, NWS Pocatello, ID

April 12, 20214 counties in Idaho

NWS Pocatello, ID issued this high wind watch at Apr 12, 2021, 7:53 PM MDT for 4 counties in Idaho. It took effect at Apr 13, 2021, 12:00 PM MDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 12, 2021, 7:53 PM MDT (01:53 UTC)
In effect from
Apr 13, 2021, 12:00 PM MDT
Expired
Apr 13, 2021, 2:33 AM MDT
In force
Issued by
NWS Pocatello, ID

Counties Bear Lake County, ID, Caribou County, ID, Franklin County, ID, Oneida County, ID

The radar

The Pocatello radar (KSFX), 110 km from the middle of the area, began a volume at 01:50 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 00:00Z, 1.9 hours before the alert went out and 176 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.

Skew-T log-pSkew-T log-p diagram, Salt Lake City I, UT at 00:00Z on 2021-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 00:00Z on 2021-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3040 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

398 
WWUS75 KPIH 130153
NPWPIH

URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
753 PM MDT Mon Apr 12 2021

IDZ054-131200-
/O.EXP.KPIH.LW.Y.0001.000000T0000Z-210413T0200Z/
/O.CON.KPIH.LW.Y.0002.210413T1300Z-210414T0200Z/
Lower Snake River Plain-
Including the cities of Pocatello, Blackfoot, American Falls, 
Shelley, and Fort Hall
753 PM MDT Mon Apr 12 2021

...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 7 AM TO 8 PM MDT
TUESDAY...
...LAKE WIND ADVISORY WILL EXPIRE AT 8 PM MDT THIS EVENING...

* WHAT...Northeast winds 15 to 25 mph with gusts up to 35 mph 
  expected.

* WHERE...American Falls Reservoir.

* WHEN...7 AM to 8 PM MDT Tuesday.

* IMPACTS...Strong winds and rough waves on area lakes will 
  create hazardous conditions for small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters on area lakes should use extra caution since strong winds
and rough waves can overturn small craft.

&&

$$

IDZ051-052-055-131200-
/O.CON.KPIH.WI.Y.0013.210413T1500Z-210414T0900Z/
Shoshone/Lava Beds-Arco/Mud Lake Desert-Eastern Magic Valley-
Including the cities of Shoshone, Richfield, Carey, Mud Lake, 
INL, Craters of the Moon NM, Burley, Rupert, Heyburn, and Oakley
753 PM MDT Mon Apr 12 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM TUESDAY TO 3 AM MDT
WEDNESDAY...

* WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph 
  expected.

* WHERE...Eastern Magic Valley, Arco Desert and INL including 
  Shoshone, Richfield, Carey, Mud Lake, Craters of the Moon, 
  Burley area and Oakley.

* WHEN...From 9 AM Tuesday to 3 AM MDT Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Crosswinds on north-south routes will create difficult driving 
  conditions for high profile vehicles and vehicles with 
  trailers.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

IDZ059-060-131200-
/O.NEW.KPIH.HW.A.0003.210413T1800Z-210414T1800Z/
Franklin/Eastern Oneida Region-Bear River Range-
Including the cities of Malad, Preston, Thatcher, 
and Emigration Summit
753 PM MDT Mon Apr 12 2021

...HIGH WIND WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY MORNING...

* WHAT...East winds 15 to 30 mph with gusts in excess of 50 mph 
  possible.

* WHERE...Cache Valley including Preston and along the Idaho 
  Wasatch.

* WHEN...From Tuesday afternoon through Wednesday morning.

* IMPACTS...Damaging winds could blow down trees and power 
  lines. Widespread power outages are possible. Travel could be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts and warnings for updates on this
situation. Fasten loose objects or shelter objects in a safe
location prior to the onset of winds.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello
1 follow-up statement
452 
WWUS75 KPIH 130833
NPWPIH

URGENT - WEATHER MESSAGE
National Weather Service Pocatello ID
233 AM MDT Tue Apr 13 2021

IDZ059-060-132100-
/O.UPG.KPIH.HW.A.0003.210413T1800Z-210414T1800Z/
/O.NEW.KPIH.HW.W.0004.210414T0000Z-210414T1800Z/
Franklin/Eastern Oneida Region-Bear River Range-
Including the cities of Malad, Preston, Thatcher, 
and Emigration Summit
233 AM MDT Tue Apr 13 2021

...HIGH WIND WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT
WEDNESDAY...

* WHAT...East winds 25 to 35 mph with gusts up to 60 mph expected.
  Localized gusts up to 70 mph possible. Winds will be strongest
  along and downwind of east to west oriented canyons and exposed 
  higher terrain areas.

* WHERE...Bear River Range and wind prone areas of the
  Franklin/Eastern Oneida Region.

* WHEN...From 6 PM this evening to noon MDT Wednesday.

* IMPACTS...Damaging winds may blow down trees and power lines.
  Travel will be difficult, especially for high profile vehicles
  traveling north or south, such as along Highway 91 in the 
  Franklin area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

IDZ061-132100-
/O.NEW.KPIH.HW.W.0004.210414T0000Z-210414T1800Z/
Bear Lake Valley-
Including the cities of St. Charles, Montpelier, and Georgetown
233 AM MDT Tue Apr 13 2021

...HIGH WIND WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT
WEDNESDAY...

* WHAT...Southeast winds 25 to 35 mph with gusts up to 60 mph
  possible.

* WHERE...Strongest winds will be observed along and downwind of
  east to west oriented canyons and exposed higher terrain areas.
  Expect rough, choppy conditions on Bear Lake.

* WHEN...From 6 PM this evening to noon MDT Wednesday.

* IMPACTS...Damaging winds may blow down trees and power lines.
  Travel will be difficult, especially for high profile vehicles
  traveling north or south. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

IDZ051-052-055-132100-
/O.CON.KPIH.WI.Y.0013.210413T1500Z-210414T0900Z/
Shoshone/Lava Beds-Arco/Mud Lake Desert-Eastern Magic Valley-
Including the cities of Shoshone, Richfield, Carey, Mud Lake, 
INL, Craters of the Moon NM, Burley, Rupert, Heyburn, and Oakley
233 AM MDT Tue Apr 13 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 3 AM
MDT WEDNESDAY...

* WHAT...Northeast winds 20 to 30 mph with gusts up to 45 mph 
  expected.

* WHERE...Eastern Magic Valley, Arco Desert and INL including 
  Shoshone, Richfield, Carey, Mud Lake, Craters of the Moon, 
  Burley area and Oakley.

* WHEN...From 9 AM Tuesday to 3 AM MDT Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Crosswinds on north-south routes will create difficult driving 
  conditions for high profile vehicles and vehicles with 
  trailers.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

IDZ054-132100-
/O.CON.KPIH.LW.Y.0002.210413T1300Z-210414T0200Z/
Lower Snake River Plain-
Including the cities of Pocatello, Blackfoot, American Falls, 
Shelley, and Fort Hall
233 AM MDT Tue Apr 13 2021

...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 7 AM THIS MORNING TO
8 PM MDT THIS EVENING...

* WHAT...Northeast winds 15 to 25 mph with gusts up to 35 mph 
  expected.

* WHERE...American Falls Reservoir.

* WHEN...7 AM to 8 PM MDT Tuesday.

* IMPACTS...Strong winds and rough waves on area lakes will 
  create hazardous conditions for small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Boaters on area lakes should use extra caution since strong winds
and rough waves can overturn small craft.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/pocatello

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 2:33 AM MDTHigh Wind WarningPIHBear Lake, Caribou, Franklin, Oneida24 hr

Nearby

High Wind Watches in Idaho, 2021Every high wind watch 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.