Alert archive / Nevada / Red Flag Warnings in 2021
Red Flag Warning 7, NWS Reno, NV
NWS Reno, NV issued this red flag warning at Jun 22, 2021, 3:18 AM PDT for Douglas County, Lyon County, Mineral County, Nevada; Madera County, Mono County, California. It took effect at Jun 22, 2021, 1:00 PM PDT. It was in force for 8 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 22, 2021, 3:18 AM PDT (10:18 UTC)
- In effect from
- Jun 22, 2021, 1:00 PM PDT
- Expired
- Jun 22, 2021, 9:00 PM PDT
- In force
- 8 hr
- Issued by
- NWS Reno, NV
Counties Madera County, CA, Mono County, CA, Douglas County, NV, Lyon County, NV, Mineral County, NV
The radar
The Reno radar (KRGX), 161 km from the middle of the area, began a volume at 10:21 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
Reno, NV (KREV), launched 00:00Z, 10.3 hours before the alert went out and 162 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
- 3484 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 236 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
345 WWUS85 KREV 221018 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 318 AM PDT Tue Jun 22 2021 CAZ274-NVZ421-230400- /O.NEW.KREV.FW.W.0007.210622T2000Z-210623T0400Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 318 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE EASTERN SIERRA... The National Weather Service in Reno has issued a Red Flag Warning for gusty winds and low humidity, which is in effect from 1 PM this afternoon to 9 PM PDT this evening. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and Western Mineral Counties. * Winds...Southwest 15 to 25 mph with gusts to 35 mph. Locally stronger winds expected for wind prone locations. * Humidity...5-15% this afternoon. * Duration...3 to 7 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ CAZ270-271-278-NVZ458-221200- /O.CON.KREV.FW.W.0006.000000T0000Z-210622T1200Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Eastern Lassen County-Northern Washoe County- 318 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT EARLY THIS MORNING FOR THUNDERSTORMS AND DRY LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... * Changes...None. * Affected Area...Fire Zone 270 Surprise Valley California, Fire Zone 271 Western Lassen, Eastern Plumas, and Eastern Sierra Counties, Fire Zone 278 Eastern Lassen County and Fire Zone 458 Northern Washoe County. * Thunderstorms...Thunderstorms have formed overnight and will continue through around sunrise. Any storms that form will be moving at greater than 20 mph, increasing the potential for dry lightning strikes and new fire starts. * Impacts...Lightning with little to no rainfall can create new fire starts and may combine with outflow winds. Fires may go undetected through the overnight hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
1 follow-up statement
939 WWUS85 KREV 221151 RFWREV URGENT - FIRE WEATHER MESSAGE National Weather Service Reno NV 451 AM PDT Tue Jun 22 2021 CAZ270-271-278-NVZ458-221300- /O.EXP.KREV.FW.W.0006.000000T0000Z-210622T1200Z/ Surprise Valley California- Western Lassen, Eastern Plumas, and Eastern Sierra Counties- Eastern Lassen County-Northern Washoe County- 451 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING WILL EXPIRE AT 5 AM PDT EARLY THIS MORNING FOR THUNDERSTORMS AND DRY LIGHTNING POTENTIAL ACROSS NORTHEAST CALIFORNIA AND NORTHWEST NEVADA... Storms are winding down this morning. Additional thunderstorms are possible near the Oregon border this afternoon. These storms are likely to be a hybrid of wet and dry, with new fire starts possible. $$ CAZ274-NVZ421-230400- /O.CON.KREV.FW.W.0007.210622T2000Z-210623T0400Z/ Southern Mono County- Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties- 451 AM PDT Tue Jun 22 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE EASTERN SIERRA... * Changes...None. * Affected Area...Fire Zone 274 Southern Mono County, Fire Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon and Western Mineral Counties. * Winds...Southwest 15 to 25 mph with gusts to 35 mph. Locally stronger winds expected for wind prone locations. * Humidity...5-15% this afternoon. * Duration...3 to 7 hours. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity before first responders can contain them. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips. && $$ http://weather.gov/reno
The office that day
Everything else NWS Reno, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 4:01 PM PDT | Severe Thunderstorm Warning | REV | Washoe | 44 min |
| Jun 22, 3:14 AM PDT | Lake Wind Advisory | REV | Mono | 18 hr |
Nearby
Red Flag Warnings in Nevada, 2021Red Flag Warnings in California, 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.