Alert archive / Idaho / Red Flag Warnings in 2021
Red Flag Warning 3, NWS Boise, ID
NWS Boise, ID issued this red flag warning at Jun 23, 2021, 8:07 AM MDT for Owyhee County, Twin Falls County, Idaho. It took effect at Jun 23, 2021, 12:00 PM MDT. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 23, 2021, 8:07 AM MDT (14:07 UTC)
- In effect from
- Jun 23, 2021, 12:00 PM MDT
- Expired
- Jun 23, 2021, 10:00 PM MDT
- In force
- 10 hr
- Issued by
- NWS Boise, ID
Counties Owyhee County, ID, Twin Falls County, ID
The radar
The Boise radar (KCBX), 132 km from the middle of the area, began a volume at 14:10 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, 2.1 hours before the alert went out and 138 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
- 23 J/kg
- Mixed-layer CIN
- -549 J/kg
- Mixed-layer LCL
- 1597 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -99 m²/s²
- 0-3 km storm-relative helicity
- -181 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
132 WWUS85 KBOI 231407 RFWBOI URGENT - FIRE WEATHER MESSAGE National Weather Service Boise ID 807 AM MDT Wed Jun 23 2021 IDZ423-426-ORZ637-240400- /O.UPG.KBOI.FW.A.0004.210623T1800Z-210624T0300Z/ /O.NEW.KBOI.FW.W.0003.210623T1800Z-210624T0400Z/ Owyhee Mountains-Southern Highlands-Vale BLM- 807 AM MDT Wed Jun 23 2021 /707 AM PDT Wed Jun 23 2021/ ...RED FLAG WARNING IN EFFECT FROM NOON MDT /11 AM PDT/ TODAY TO 10 PM MDT /9 PM PDT/ THIS EVENING FOR LIGHTNING FOR OWYHEE MOUNTAINS...SOUTHERN HIGHLANDS AND VALE BLM...WHICH ARE FIRE WEATHER ZONES 423...426 AND 637... The National Weather Service in Boise has issued a Red Flag Warning, which is in effect from noon MDT /11 AM PDT/ today to 10 PM MDT /9 PM PDT/ this evening. The Fire Weather Watch is no longer in effect. * THUNDERSTORMS...Scattered thunderstorms will develop late this morning and continue through this evening. * OUTFLOW WINDS...Gusts up to 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will occur shortly. && $$ ORZ636-646-240400- /O.NEW.KBOI.FW.W.0003.210623T1800Z-210624T0400Z/ Burns BLM-Baker Valley- 707 AM PDT Wed Jun 23 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 9 PM PDT THIS EVENING FOR LIGHTNING FOR BURNS BLM AND BAKER VALLEY...WHICH ARE FIRE WEATHER ZONES 636 AND 646... The National Weather Service in Boise has issued a Red Flag Warning, which is in effect from 11 AM this morning to 9 PM PDT this evening. * THUNDERSTORMS...Scattered thunderstorms will develop late this morning and continue through this evening. * OUTFLOW WINDS...Gusts up to 50 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will occur shortly. && $$ L
1 follow-up statement
604 WWUS85 KBOI 240342 RFWBOI URGENT - FIRE WEATHER MESSAGE National Weather Service Boise ID 942 PM MDT Wed Jun 23 2021 ...RED FLAG WARNING WILL EXPIRE AT 10 PM MDT / 9 PM PDT... IDZ423-426-ORZ636-637-646-240445- /O.EXP.KBOI.FW.W.0003.000000T0000Z-210624T0400Z/ Owyhee Mountains-Southern Highlands-Burns BLM-Vale BLM- Baker Valley- 942 PM MDT Wed Jun 23 2021 /842 PM PDT Wed Jun 23 2021/ ...RED FLAG WARNING WILL EXPIRE AT 10 PM MDT /9 PM PDT/ THIS EVENING FOR LIGHTNING FOR OWYHEE MOUNTAINS...SOUTHERN HIGHLANDS...BURNS BLM...VALE BLM AND BAKER VALLEY...WHICH ARE FIRE WEATHER ZONES 423...426...636...637 AND 646... Thunderstorm activity has decreased significantly and the Red Flag Warning will be allowed to expire on schedule. $$ L
The office that day
Everything else NWS Boise, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 6:08 PM MDT | Severe Thunderstorm Warning | BOI | Owyhee | 36 min |
| Jun 22, 6:40 PM MDT | Severe Thunderstorm Warning | BOI | Ada, Canyon, Owyhee | 50 min |
| Jun 22, 7:14 PM MDT | Dust Storm Warning | BOI | Ada, Boise, Canyon, Gem, Payette | 31 min |
| Jun 22, 7:35 PM MDT | Dust Storm Warning | BOI | Ada, Elmore, Owyhee | 55 min |
| Jun 22, 7:45 PM MDT | Dust Storm Warning | BOI | Adams, Boise, Camas, Elmore, Gem, Payette and 2 more | 90 min |
| Jun 22, 7:55 PM MDT | Special Weather Statement | BOI | Ada, Canyon, Payette | 50 min |
| Jun 22, 8:36 PM MDT | High Wind Warning | BOI | Ada, Adams, Boise, Camas, Canyon, Elmore and 8 more | 3 hr |
| Jun 22, 9:16 PM MDT | Special Weather Statement | BOI | Adams | 59 min |
| Jun 22, 9:35 PM MDT | Special Weather Statement | BOI | Valley | 40 min |
| Jun 22, 10:46 PM MDT | Special Weather Statement | BOI | Adams | 59 min |
| Jun 23, 2:33 PM MDT | Excessive Heat Watch | BOI | Ada, Adams, Boise, Camas, Canyon, Elmore and 8 more | 24 hr |
| Jun 23, 4:56 PM MDT | Special Weather Statement | BOI | Owyhee | 34 min |
| Jun 23, 5:18 PM MDT | Severe Thunderstorm Warning | BOI | Elmore, Owyhee | 42 min |
| Jun 23, 4:22 PM MDT | Special Weather Statement | BOI | Malheur | 23 min |
Nearby
Red Flag Warnings in Idaho, 2021Red Flag Warnings in Oregon, 2021Every red flag warning 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.