Alert archive / Idaho / Wind Advisories in 2021
Wind Advisory 6, NWS Boise, ID
NWS Boise, ID issued this wind advisory at Mar 29, 2021, 8:26 AM MDT for 6 counties in Idaho. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Mar 29, 2021, 8:26 AM MDT (14:26 UTC)
- Expired
- Mar 29, 2021, 4:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Boise, ID
Counties Ada County, ID, Elmore County, ID, Gooding County, ID, Jerome County, ID, Owyhee County, ID, Twin Falls County, ID
The radar
The Boise radar (KCBX), 102 km from the middle of the area, began a volume at 14:30 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, 2.4 hours before the alert went out and 106 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
- 1651 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- -187 m²/s²
- 0-3 km storm-relative helicity
- -39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
664 WWUS75 KBOI 291426 AAA NPWBOI URGENT - WEATHER MESSAGE...UPDATED National Weather Service Boise ID 826 AM MDT Mon Mar 29 2021 IDZ014-292100- /O.CAN.KBOI.HW.W.0002.000000T0000Z-210329T2100Z/ /O.NEW.KBOI.WI.Y.0006.210329T1426Z-210329T2100Z/ Upper Treasure Valley- 826 AM MDT Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON... ...HIGH WIND WARNING IS CANCELLED... * WHAT...Northwest winds 20 to 30 mph with gusts up to 45 mph. * WHERE...Upper Treasure Valley southeast of Boise. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Gusty winds could blow unsecured objects. Small tree limbs could be blown down. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IDZ016-030-292100- /O.CON.KBOI.HW.W.0002.000000T0000Z-210329T2100Z/ Western Magic Valley-Southern Twin Falls County- 826 AM MDT Mon Mar 29 2021 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON... * WHAT...West winds 30 to 40 mph with gusts up to 60 mph. Strongest gusts will be in the Western Magic Valley zone. * WHERE...Western Magic Valley and Southern Twin Falls County. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Damaging winds may blow down trees and power lines. Power outages are possible. Travel will be difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People should avoid being outside in forested areas and around trees and branches. If possible, remain in the lower levels of your home during the windstorm, and avoid windows. Use caution if you must drive. && $$
3 follow-up statements
615 WWUS75 KBOI 291732 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 1132 AM MDT Mon Mar 29 2021 IDZ016-030-292100- /O.CAN.KBOI.HW.W.0002.000000T0000Z-210329T2100Z/ /O.EXA.KBOI.WI.Y.0006.000000T0000Z-210329T2100Z/ Western Magic Valley-Southern Twin Falls County- 1132 AM MDT Mon Mar 29 2021 ...WIND ADVISORY IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON... ...HIGH WIND WARNING IS CANCELLED... * WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph. * WHERE...Western Magic Valley and Southern Twin Falls County. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Gusty winds will blow unsecured objects. Small tree limbs could be blown down. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ IDZ014-292100- /O.CON.KBOI.WI.Y.0006.000000T0000Z-210329T2100Z/ Upper Treasure Valley- 1132 AM MDT Mon Mar 29 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON... * WHAT...Northwest winds 20 to 30 mph with gusts up to 45 mph. * WHERE...Upper Treasure Valley southeast of Boise. * WHEN...Until 3 PM MDT this afternoon. * IMPACTS...Gusty winds could blow unsecured objects. Small tree limbs could be blown down. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
059 WWUS75 KBOI 292038 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 238 PM MDT Mon Mar 29 2021 IDZ014-292145- /O.CAN.KBOI.WI.Y.0006.000000T0000Z-210329T2100Z/ Upper Treasure Valley- 238 PM MDT Mon Mar 29 2021 ...WIND ADVISORY IS CANCELLED... Wind speeds have decreased to below advisory criteria. $$ IDZ016-030-292200- /O.EXT.KBOI.WI.Y.0006.000000T0000Z-210329T2200Z/ Western Magic Valley-Southern Twin Falls County- 238 PM MDT Mon Mar 29 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 4 PM MDT THIS AFTERNOON... * WHAT...Northwest winds 25 to 35 mph with gusts up to 50 mph. * WHERE...Western Magic Valley and Southern Twin Falls County. * WHEN...Until 4 PM MDT this afternoon. * IMPACTS...Gusty winds will blow unsecured objects. Small tree limbs could be blown down. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
241 WWUS75 KBOI 292133 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 333 PM MDT Mon Mar 29 2021 IDZ016-030-292245- /O.EXP.KBOI.WI.Y.0006.000000T0000Z-210329T2200Z/ Western Magic Valley-Southern Twin Falls County- 333 PM MDT Mon Mar 29 2021 ...WIND ADVISORY WILL EXPIRE AT 4 PM MDT THIS AFTERNOON... Winds have lowered below advisory levels. However, gusty winds up to 40 mph will continue through 7 pm MDT. Winds will slowly diminish after sunset. $$
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.