Alert archive / Idaho / Wind Advisories in 2021
Wind Advisory 2, NWS Boise, ID
NWS Boise, ID issued this wind advisory at Feb 4, 2021, 2:33 PM MST for 7 counties in Idaho. It took effect at Feb 5, 2021, 9:00 AM MST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Feb 4, 2021, 2:33 PM MST (21:33 UTC)
- In effect from
- Feb 5, 2021, 9:00 AM MST
- Expired
- Feb 5, 2021, 5:00 PM MST
- In force
- 8 hr
- Issued by
- NWS Boise, ID
Counties Ada County, ID, Camas County, ID, Elmore County, ID, Gooding County, ID, Jerome County, ID, Owyhee County, ID, Twin Falls County, ID
The radar
The Boise radar (KCBX), 101 km from the middle of the area, began a volume at 21:31 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
Boise Airport, ID (KBOI), launched 12:00Z, 9.6 hours before the alert went out and 104 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
- 1029 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
947 WWUS75 KBOI 042133 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 233 PM MST Thu Feb 4 2021 IDZ015-016-029-030-051200- /O.NEW.KBOI.WI.Y.0002.210205T1600Z-210206T0000Z/ Southwest Highlands-Western Magic Valley-Owyhee Mountains- Southern Twin Falls County- 233 PM MST Thu Feb 4 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM TO 5 PM MST FRIDAY... * WHAT...West winds 25 to 35 mph with gusts of 40 to 45 mph expected. * WHERE...Portions of south central and southwest Idaho, including the Magic Valley, Owyhee County, and southern Twin Falls county. * WHEN...From 9 AM to 5 PM MST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Periods of snowfall could combine with these winds to create difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
048 WWUS75 KBOI 050754 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 1254 AM MST Fri Feb 5 2021 IDZ014-028-060000- /O.EXA.KBOI.WI.Y.0002.210205T1600Z-210206T0000Z/ Upper Treasure Valley-Camas Prairie- 1254 AM MST Fri Feb 5 2021 ...WIND ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 5 PM MST THIS AFTERNOON... * WHAT...West winds 25 to 35 mph with gusts of 40 to 45 mph expected. * WHERE...Upper Treasure Valley from Mountain Home south and east, and the Camas Prairie. * WHEN...From 9 AM to 5 PM MST today. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Periods of snowfall could combine with these winds to create difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IDZ015-016-029-030-060000- /O.CON.KBOI.WI.Y.0002.210205T1600Z-210206T0000Z/ Southwest Highlands-Western Magic Valley-Owyhee Mountains- Southern Twin Falls County- 1254 AM MST Fri Feb 5 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 5 PM MST THIS AFTERNOON... * WHAT...West winds 25 to 35 mph with gusts of 40 to 45 mph expected. * WHERE...Portions of south central and southwest Idaho, including the Magic Valley, Owyhee County, and southern Twin Falls county. * WHEN...From 9 AM to 5 PM MST Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Periods of snowfall could combine with these winds to create difficult travel. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
007 WWUS75 KBOI 052355 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 455 PM MST Fri Feb 5 2021 IDZ014>016-028>030-060100- /O.EXP.KBOI.WI.Y.0002.000000T0000Z-210206T0000Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Camas Prairie-Owyhee Mountains-Southern Twin Falls County- 455 PM MST Fri Feb 5 2021 ...WIND ADVISORY WILL EXPIRE AT 5 PM MST THIS AFTERNOON... The gusty winds will continue to subside this evening. $$
Nearby
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.