Alert archive / Idaho / Wind Advisories in 2021
Wind Advisory 7, NWS Boise, ID
NWS Boise, ID issued this wind advisory at Apr 7, 2021, 11:35 AM MDT for 6 counties in Idaho. It took effect at Apr 8, 2021, 12:07 PM MDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Apr 7, 2021, 11:35 AM MDT (17:35 UTC)
- In effect from
- Apr 8, 2021, 12:07 PM MDT
- Expired
- Apr 8, 2021, 8:00 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 17:54 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, 5.6 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
- 2899 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
952 WWUS75 KBOI 071735 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 1135 AM MDT Wed Apr 7 2021 IDZ014>016-030-080500- /O.NEW.KBOI.WI.Y.0007.210408T2000Z-210409T0200Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Southern Twin Falls County- 1135 AM MDT Wed Apr 7 2021 ...WIND ADVISORY IN EFFECT FROM 2 PM TO 8 PM MDT THURSDAY... * WHAT...Northwest winds 25 to 35 mph with gusts up to 45 mph expected. * WHERE...Upper Treasure Valley southeast of Boise, eastern half of Owyhee County, Western Magic Valley, and south to the Nevada border. * WHEN...From 2 PM to 8 PM MDT Thursday. * IMPACTS...Gusty winds could blow unsecured objects around. Tree limbs could be blown down. * ADDITIONAL DETAILS...Travel will be difficult for high-profile vehicles on north-south roads due to cross-winds. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
4 follow-up statements
046 WWUS75 KBOI 080337 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 937 PM MDT Wed Apr 7 2021 IDZ014>016-030-081300- /O.CON.KBOI.WI.Y.0007.210408T2000Z-210409T0200Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Southern Twin Falls County- 937 PM MDT Wed Apr 7 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 2 PM TO 8 PM MDT THURSDAY... * WHAT...Northwest winds 25 to 35 mph with gusts up to 45 mph expected. * WHERE...Upper Treasure Valley southeast of Boise, eastern half of Owyhee County, Western Magic Valley, and south to the Nevada border. * WHEN...From 2 PM to 8 PM MDT Thursday. * IMPACTS...Gusty winds could blow unsecured objects around. Tree limbs could be blown down. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
414 WWUS75 KBOI 080924 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 324 AM MDT Thu Apr 8 2021 IDZ014>016-030-090200- /O.CON.KBOI.WI.Y.0007.210408T2000Z-210409T0200Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Southern Twin Falls County- 324 AM MDT Thu Apr 8 2021 ...WIND ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM MDT THIS EVENING... * WHAT...Northwest winds 25 to 35 mph with gusts up to 45 mph expected. * WHERE...Upper Treasure Valley southeast of Boise, eastern half of Owyhee County, Western Magic Valley, and south to the Nevada border. * WHEN...From 2 PM to 8 PM MDT Thursday. * IMPACTS...Gusty winds could blow unsecured objects around. Tree limbs could be blown down. Lightweight or high-profile vehicles will be impacted by wind, especially on north-south oriented roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
489 WWUS75 KBOI 081807 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 1207 PM MDT Thu Apr 8 2021 IDZ014>016-030-090200- /O.EXT.KBOI.WI.Y.0007.210408T1807Z-210409T0200Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Southern Twin Falls County- 1207 PM MDT Thu Apr 8 2021 ...WIND ADVISORY NOW IN EFFECT UNTIL 8 PM MDT THIS EVENING... * WHAT...Northwest winds 25 to 35 mph with gusts up to 45 mph expected. * WHERE...Upper Treasure Valley southeast of Boise, eastern half of Owyhee County, Western Magic Valley, and south to the Nevada border. * WHEN...Until 8 PM MDT this evening. * IMPACTS...Gusty winds could blow unsecured objects around. Tree limbs could be blown down. Lightweight or high-profile vehicles will be impacted by wind, especially on north-south oriented roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
165 WWUS75 KBOI 090153 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 753 PM MDT Thu Apr 8 2021 IDZ014>016-030-090300- /O.EXP.KBOI.WI.Y.0007.000000T0000Z-210409T0200Z/ Upper Treasure Valley-Southwest Highlands-Western Magic Valley- Southern Twin Falls County- 753 PM MDT Thu Apr 8 2021 ...WIND ADVISORY WILL EXPIRE AT 8 PM MDT THIS EVENING... Winds have fallen below Advisory criteria but will remain gusty through 10 PM tonight. $$
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.