Alert archive / Idaho / Wind Advisories in 2021
Wind Advisory 12, NWS Boise, ID
NWS Boise, ID issued this wind advisory at Sep 18, 2021, 5:00 AM MDT for Malheur County, Oregon; 11 counties in Idaho. It took effect at Sep 18, 2021, 4:00 PM MDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Sep 18, 2021, 5:00 AM MDT (11:00 UTC)
- In effect from
- Sep 18, 2021, 4:00 PM MDT
- Expired
- Sep 18, 2021, 8:00 PM MDT
- In force
- 4 hr
- Issued by
- NWS Boise, ID
Counties Ada County, ID, Adams County, ID, Boise County, ID, Camas County, ID, Canyon County, ID, Elmore County, ID, Gem County, ID, Owyhee County, ID, Payette County, ID, Valley County, ID, Washington County, ID, Malheur County, OR
The radar
The Boise radar (KCBX), 37 km from the middle of the area, began a volume at 11:00 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 00:00Z, 11.0 hours before the alert went out and 28 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
- 3981 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
627 WWUS75 KBOI 181100 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 500 AM MDT Sat Sep 18 2021 IDZ011>014-029-033-ORZ063-064-181900- /O.NEW.KBOI.WI.Y.0012.210918T2200Z-210919T0200Z/ West Central Mountains-Lower Treasure Valley ID-Boise Mountains- Upper Treasure Valley-Owyhee Mountains-Upper Weiser River- Malheur County-Oregon Lower Treasure Valley- 500 AM MDT Sat Sep 18 2021 /400 AM PDT Sat Sep 18 2021/ ...WIND ADVISORY IN EFFECT FROM 4 PM MDT /3 PM PDT/ THIS AFTERNOON TO 8 PM MDT /7 PM PDT/ THIS EVENING... * WHAT...West or northwest wind gusts up to 50 mph expected with passage of a cold front. * WHERE...Portions of southeast Oregon and southwest and west central Idaho. * WHEN...From 4 PM MDT /3 PM PDT/ this afternoon to 8 PM MDT /7 PM PDT/ this evening. * IMPACTS...Gusty winds could blow unsecured objects. Tree limbs could be blown down and power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
377 WWUS75 KBOI 181854 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 1254 PM MDT Sat Sep 18 2021 IDZ011>014-029-033-ORZ063-064-190200- /O.CON.KBOI.WI.Y.0012.210918T2200Z-210919T0200Z/ West Central Mountains-Lower Treasure Valley ID-Boise Mountains- Upper Treasure Valley-Owyhee Mountains-Upper Weiser River- Malheur County-Oregon Lower Treasure Valley- 1254 PM MDT Sat Sep 18 2021 /1154 AM PDT Sat Sep 18 2021/ ...WIND ADVISORY REMAINS IN EFFECT FROM 4 PM MDT /3 PM PDT/ THIS AFTERNOON TO 8 PM MDT /7 PM PDT/ THIS EVENING... * WHAT...West or northwest wind gusts up to 50 mph expected with passage of a cold front. * WHERE...Portions of southeast Oregon and southwest and west central Idaho. * WHEN...From 4 PM MDT /3 PM PDT/ this afternoon to 8 PM MDT /7 PM PDT/ this evening. * IMPACTS...Gusty winds could blow unsecured objects. Tree limbs could be blown down and power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
486 WWUS75 KBOI 190151 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 751 PM MDT Sat Sep 18 2021 IDZ011>014-029-033-ORZ063-064-190300- /O.EXP.KBOI.WI.Y.0012.000000T0000Z-210919T0200Z/ West Central Mountains-Lower Treasure Valley ID-Boise Mountains- Upper Treasure Valley-Owyhee Mountains-Upper Weiser River- Malheur County-Oregon Lower Treasure Valley- 751 PM MDT Sat Sep 18 2021 /651 PM PDT Sat Sep 18 2021/ ...WIND ADVISORY WILL EXPIRE AT 8 PM MDT /7 PM PDT/ THIS EVENING... Wind across the area has weakened this evening, allowing the Wind Advisory to expire. Widespread strong winds are no longer expected, though periods of gusty winds will remain possible tonight. $$
Nearby
Wind Advisories in Idaho, 2021Wind Advisories in Oregon, 2021Every wind advisory 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.