Alert archive / Idaho / Wind Advisories in 2021
Wind Advisory 11, NWS Boise, ID
NWS Boise, ID issued this wind advisory at Aug 5, 2021, 2:41 AM MDT for 12 counties in Idaho; Baker County, Harney County, Malheur County, Oregon. It took effect at Aug 5, 2021, 6:00 PM MDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Aug 5, 2021, 2:41 AM MDT (08:41 UTC)
- In effect from
- Aug 5, 2021, 6:00 PM MDT
- Expired
- Aug 6, 2021, 5:27 AM MDT
- In force
- 11 hr
- Issued by
- NWS Boise, ID
Counties Ada County, ID, Adams County, ID, Camas County, ID, Canyon County, ID, Elmore County, ID, Gem County, ID, Gooding County, ID, Jerome County, ID, Owyhee County, ID, Payette County, ID, Twin Falls County, ID, Washington County, ID, Baker County, OR, Harney County, OR, Malheur County, OR
The radar
The Boise radar (KCBX), 4 km from the middle of the area, began a volume at 08:43 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, 8.7 hours before the alert went out and 7 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
- 1128 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 3663 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted.
409 WWUS75 KBOI 050841 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 241 AM MDT Thu Aug 5 2021 ORZ061>063-052100- /O.NEW.KBOI.WI.Y.0011.210806T0000Z-210806T1200Z/ Harney County-Baker County-Malheur County- 241 AM MDT Thu Aug 5 2021 /141 AM PDT Thu Aug 5 2021/ ...WIND ADVISORY IN EFFECT FROM 6 PM MDT /5 PM PDT/ THIS EVENING TO 6 AM MDT /5 AM PDT/ FRIDAY... * WHAT...West winds 15 to 25 mph with gusts up to 55 mph expected. * WHERE...Harney County, Baker County and Malheur County. * WHEN...From 6 PM MDT /5 PM PDT/ this evening to 6 AM MDT /5 AM PDT/ Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IDZ012-029-033-ORZ064-052100- /O.NEW.KBOI.WI.Y.0011.210806T0400Z-210806T1200Z/ Lower Treasure Valley ID-Owyhee Mountains-Upper Weiser River- Oregon Lower Treasure Valley- 241 AM MDT Thu Aug 5 2021 /141 AM PDT Thu Aug 5 2021/ ...WIND ADVISORY IN EFFECT FROM 10 PM MDT /9 PM PDT/ THIS EVENING TO 6 AM MDT /5 AM PDT/ FRIDAY... * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Portions of southeast Oregon and southwest and west central Idaho. * WHEN...From 10 PM MDT /9 PM PDT/ this evening to 6 AM MDT /5 AM PDT/ Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IDZ014>016-028-030-052100- /O.NEW.KBOI.WI.Y.0011.210806T0600Z-210806T1600Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Camas Prairie-Southern Twin Falls County- 241 AM MDT Thu Aug 5 2021 ...WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT FRIDAY... * WHAT...West winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Portions of south central and southwest Idaho. * WHEN...From midnight tonight to 10 AM MDT Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
3 follow-up statements
542 WWUS75 KBOI 052007 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 207 PM MDT Thu Aug 5 2021 IDZ012-029-033-ORZ064-060700- /O.EXT.KBOI.WI.Y.0011.210806T0300Z-210806T1200Z/ Lower Treasure Valley ID-Owyhee Mountains-Upper Weiser River- Oregon Lower Treasure Valley- 207 PM MDT Thu Aug 5 2021 /107 PM PDT Thu Aug 5 2021/ ...WIND ADVISORY NOW IN EFFECT FROM 9 PM MDT /8 PM PDT/ THIS EVENING TO 6 AM MDT /5 AM PDT/ FRIDAY... * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Portions of southeast Oregon and southwest and west central Idaho. * WHEN...From 9 PM MDT /8 PM PDT/ this evening to 6 AM MDT /5 AM PDT/ Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ ORZ061>063-060700- /O.CON.KBOI.WI.Y.0011.210806T0000Z-210806T1200Z/ Harney County-Baker County-Malheur County- 207 PM MDT Thu Aug 5 2021 /107 PM PDT Thu Aug 5 2021/ ...WIND ADVISORY REMAINS IN EFFECT FROM 6 PM MDT /5 PM PDT/ THIS EVENING TO 6 AM MDT /5 AM PDT/ FRIDAY... * WHAT...West winds 15 to 25 mph with gusts up to 55 mph expected. * WHERE...Harney County, Baker County and Malheur County. * WHEN...From 6 PM MDT /5 PM PDT/ this evening to 6 AM MDT /5 AM PDT/ Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IDZ014>016-028-030-060700- /O.CON.KBOI.WI.Y.0011.210806T0600Z-210806T1600Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Camas Prairie-Southern Twin Falls County- 207 PM MDT Thu Aug 5 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT FRIDAY... * WHAT...West winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Portions of south central and southwest Idaho. * WHEN...From midnight tonight to 10 AM MDT Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
336 WWUS75 KBOI 060630 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 1230 AM MDT Fri Aug 6 2021 IDZ012-029-033-ORZ061>064-061200- /O.CON.KBOI.WI.Y.0011.000000T0000Z-210806T1200Z/ Lower Treasure Valley ID-Owyhee Mountains-Upper Weiser River- Harney County-Baker County-Malheur County- Oregon Lower Treasure Valley- 1230 AM MDT Fri Aug 6 2021 /1130 PM PDT Thu Aug 5 2021/ ...WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT /5 AM PDT/ EARLY THIS MORNING... * WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Portions of southeast Oregon and southwest and west central Idaho. * WHEN...Until 6 AM MDT /5 AM PDT/ Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IDZ014>016-028-030-061430- /O.CON.KBOI.WI.Y.0011.000000T0000Z-210806T1600Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Camas Prairie-Southern Twin Falls County- 1230 AM MDT Fri Aug 6 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...West winds 15 to 25 mph with gusts up to 50 mph expected. * WHERE...Portions of south central and southwest Idaho. * WHEN...Until 10 AM MDT Friday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...A cold front, along with gusts from thunderstorms, will result in a period of strong winds tonight into Friday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
051 WWUS75 KBOI 061127 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 527 AM MDT Fri Aug 6 2021 IDZ012-029-033-ORZ061>064-061230- /O.CAN.KBOI.WI.Y.0011.000000T0000Z-210806T1200Z/ Lower Treasure Valley ID-Owyhee Mountains-Upper Weiser River- Harney County-Baker County-Malheur County- Oregon Lower Treasure Valley- 527 AM MDT Fri Aug 6 2021 /427 AM PDT Fri Aug 6 2021/ ...WIND ADVISORY IS CANCELLED... Windspeeds have consistently remained below advisory level for the past few hours, apart from winds associated with thunderstorms. Therefore, the advisory has been cancelled. $$ IDZ014>016-028-030-061230- /O.CAN.KBOI.WI.Y.0011.000000T0000Z-210806T1600Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Camas Prairie-Southern Twin Falls County- 527 AM MDT Fri Aug 6 2021 ...WIND ADVISORY IS CANCELLED... Windspeeds have consistently remained below advisory level for the past few hours, apart from winds associated with thunderstorms. Therefore, the advisory has been cancelled. $$ SP
The office that day
Everything else NWS Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 7:49 PM MDT | Special Weather Statement | BOI | Payette | 26 min |
| Aug 4, 8:12 PM MDT | Special Weather Statement | BOI | Boise | 33 min |
| Aug 4, 8:29 PM MDT | Special Weather Statement | BOI | Gem | 31 min |
| Aug 4, 8:48 PM MDT | Special Weather Statement | BOI | Boise | 27 min |
| Aug 4, 9:05 PM MDT | Special Weather Statement | BOI | Ada | 25 min |
| Aug 4, 9:18 PM MDT | Special Weather Statement | BOI | Baker | 27 min |
| Aug 5, 5:35 PM MDT | Special Weather Statement | BOI | Baker | 25 min |
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.